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Apples to oranges:environmentally derived,dynamic regulation of serotonin neuron subpopulations in adulthood?
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作者 Christopher J.O’Connell Matthew J.Robson 《Neural Regeneration Research》 SCIE CAS 2025年第9期2596-2597,共2页
Traumatic brain injury(TBI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TBIs are often sustained during a dynamic... Traumatic brain injury(TBI)is a public health problem with an undue economic burden that impacts nearly every age,ethnic,and gender group across the globe(Capizzi et al.,2020).TBIs are often sustained during a dynamic range of exposures to energetic environmental forces and as such outcomes are typically heterogeneous regarding severity and pathology(Capizzi et al.,2020). 展开更多
关键词 SUSTAINED ORANGE dynamic
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Jungle Animals
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作者 Rhonda Telfer 《空中英语教室(初级版.大家说英语)》 2025年第1期40-43,55,56,共6页
A jungle is full of life.You can sometimes see exhibits of jungle animals and learn about them.Monkeys play in jungle trees.Colorful parrots fly and call to one another.Black and orange tigers hunt under the trees.
关键词 ORANGE SOMETIMES ANIMALS
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Eating Healthy
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作者 Ruth Devlin 《空中英语教室(初级版.大家说英语)》 2025年第1期26-28,53,共4页
Every one wants to be healthy and feel good.Eating the right foods can help with that.To eat healthy,you should eat plenty of fruits and vegetables.Five servings a day is best.Eat dark green,yellow and orange ones.Whe... Every one wants to be healthy and feel good.Eating the right foods can help with that.To eat healthy,you should eat plenty of fruits and vegetables.Five servings a day is best.Eat dark green,yellow and orange ones.When you want a snack. 展开更多
关键词 ORANGE plenty YELLOW
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烟草Orange蛋白突变体的转录组和代谢组分析
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作者 曾婉俐 向海英 +5 位作者 刘德水 周会娜 高茜 潘帮珍 李雪梅 李晶 《云南农业大学学报(自然科学版)》 CAS CSCD 北大核心 2024年第5期40-47,共8页
【目的】分析烟草Orange蛋白突变体的转录组和代谢组,为培育高类胡萝卜素含量的烟草提供理论依据。【方法】通过CRISPR/Cas9基因编辑技术,获得带有3个碱基缺失的NtOR基因突变株系208。采用转录组测序、液相色谱—质谱联用的非靶向方法... 【目的】分析烟草Orange蛋白突变体的转录组和代谢组,为培育高类胡萝卜素含量的烟草提供理论依据。【方法】通过CRISPR/Cas9基因编辑技术,获得带有3个碱基缺失的NtOR基因突变株系208。采用转录组测序、液相色谱—质谱联用的非靶向方法、气相色谱—质谱联用的衍生化方法和顶空进样技术,对突变株系的差异基因和差异代谢物进行分析。【结果】突变株系208叶片中的β-胡萝卜素和紫黄质含量显著下降。转录组分析显示:突变株系208中有10369个差异表达基因,其中4178个基因上调,6191个基因下调。代谢组分析显示:突变株系208与对照相比有160个差异代谢物。【结论】突变株系208中的类胡萝卜素含量下降,色素代谢途径中玉米黄素环氧化酶基因下调,有机酸和二萜类代谢物含量显著升高。 展开更多
关键词 烟草 类胡萝卜素 Orange蛋白 Β-胡萝卜素 紫黄质
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Defects-rich MgFe LDH:A high-capacity adsorbent for methyl orange wastewater
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作者 Chunmei Zhu Liting Zhang +7 位作者 Chenyuan Cui Xin Lian Long Qu Bai He Guoyuan Yuan Jian Feng Siwei Xiang Bo Yu 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2024年第10期63-73,共11页
Dye pollution is a common pollutant in wastewater that poses a serious threat to human health.Layered double hydroxide(LDH)is a commonly used adsorbent for dye removal.However,its adsorption efficiency is significantl... Dye pollution is a common pollutant in wastewater that poses a serious threat to human health.Layered double hydroxide(LDH)is a commonly used adsorbent for dye removal.However,its adsorption efficiency is significantly limited by the limited adsorption active sites of the adsorbent.In this paper,a defects-rich MgFe LDH adsorbent for anionic dye wastewater was synthesized by a simple hydrothermal method and alkaline etching.Different analytical techniques,such as XRD,FT-IR,SEM,TEM,XPS,and N2 adsorption-desorption isotherm,were used to verify the chemical composition and surface characteristics of the materials,and the effects of pH,temperature,and contact time on the adsorption effect of methyl orange and the adsorption mechanism were analyzed.Alkaline etching of Al and Zn in the laminate generated defects that expose unsaturated coordination centers and create abundant adsorption sites,which can electrostatically attract and coordinate with dye ions.At 25℃,the adsorption capacity of MgFe LDH with Al etched and MgFe LDH with Zn etched for methyl orange dye reached 1722 mg·g^(-1 ) and 1685 mg·g^(-1 ),respectively,much higher than that of MgFe LDH(544 mg·g^(-1 )).This work provides a promising method for the removal of dye wastewater by adsorption and a new idea for the design and development of high-performance dye wastewater adsorbents. 展开更多
关键词 MgFe LDH Methyl orange Alkaline etching Defects Adsorption
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High-Performance Organic Field-Effect Transistors Based on Two-Dimensional Vat Orange 3 Crystals
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作者 闫宁 熊志仁 +1 位作者 秦成兵 李小茜 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第2期122-128,共7页
The exploration and research of low-cost,environmentally friendly,and sustainable organic semiconductor materials are of immense significance in various fields,including electronics,optoelectronics,and energy conversi... The exploration and research of low-cost,environmentally friendly,and sustainable organic semiconductor materials are of immense significance in various fields,including electronics,optoelectronics,and energy conversion.Unfortunately,these semiconductors have almost poor charge transport properties,which range from∼10^(−4) cm^(2)·V^(−1)·s^(−1) to∼10^(−2) cm^(2)·V^(−1)·s^(−1).Vat orange 3,as one of these organic semiconductors,has great potential due to its highly conjugated structure.We obtain high-quality multilayered Vat orange 3 crystals with two-dimensional(2D)growth on h-BN surfaces with thickness of 10–100 nm using physical vapor transport.Raman’s results confirm the stability of the chemical structure of Vat orange 3 during growth.Furthermore,by leveraging the structural advantages of 2D materials,an organic field-effect transistor with a 2D vdW vertical heterostructure is further realized with h-BN encapsulation and multilayered graphene contact electrodes,resulting in an excellent transistor performance with On/Off ratio of 104 and high field-effect mobility of 0.14 cm^(2)·V^(−1)·s^(−1).Our results show the great potential of Vat orange 3 with 2D structures in future nano-electronic applications.Furthermore,we showcase an approach that integrates organic semiconductors with 2D materials,aiming to offer new insights into the study of organic semiconductors. 展开更多
关键词 TRANSISTOR ORANGE SEMICONDUCTORS
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Global analysis of basic leucine zipper transcription factors in trifoliate orange and the function identification of PtbZIP49 in salt tolerance
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作者 Yuanyuan Xu Qiuling Hui +5 位作者 Meng Li Hongxian Peng Yizhong He Changpin Chun Liangzhi Peng Xingzheng Fu 《Horticultural Plant Journal》 SCIE CAS CSCD 2024年第1期115-130,共16页
As one of the most widely distributed and highly conserved transcription factors in eukaryotes,basic leucine zipper proteins(bZIPs)are involved in a variety of biological processes in plants,but they are largely unkno... As one of the most widely distributed and highly conserved transcription factors in eukaryotes,basic leucine zipper proteins(bZIPs)are involved in a variety of biological processes in plants,but they are largely unknown in citrus.In this study,56 bZIP family members were identified genome-wide from an important citrus rootstock,namely trifoliate orange(Poncirus trifoliata L.Raf.),and these putative bZIPs were named PtbZIP1—PtbZIP56.All PtbZIPs were classified into 13 subgroups by phylogenetic comparison with Arabidopsis thaliana bZIPs(AtbZIPs),and they were randomly distributed on nine known(50 genes)chromosomes and one unknown(6 genes)chromosome.Sequence analysis revealed the detailed characteristics of PtPZIPs,including their amino acid length,isoelectric point(pI),molecular weight(MW),predicted subcellular localization,gene structure,and conserved motifs.Prediction of promoter elements suggested the presence of drought,low-temperature,wound,and defense and stress responsive elements,as well as multiple hormone-responsive cis-acting elements.Spatiotemporal expression analysis showed the transcriptional patterns of PtbZIPs in different tissues and under dehydration,high salt,ABA,and IAA treatments.In addition,21 PtbZIPs were predicted to have direct or indirect protein—protein interactions.Among these,PtbZIP49 was experimentally proven to interact with PtbZIP1 or PtbZIP11 by using a yeast two-hybrid assay and bimolecular fluorescence complementation(BiFC).Subcellular localization analysis further revealed that PtbZIP1,PtbZIP11,and PtbZIP49 were localized in the nucleus.Moreover,PtbZIP49 was functionally identified as having an important role in salt stress via ectopic expression in A.thaliana and silenced in trifoliate orange using virus-induced gene silencing(VIGS).This study provided comprehensive information on PtbZIP transcription factors in citrus and highlights their potential functions in abiotic stress. 展开更多
关键词 BZIP CITRUS Trifoliate orange Abiotic stress Expression pattern
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Photocatalytic Decoloration of Methyl Orange by TiO2 in Slurry
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作者 M’Bra Ignace Christian Konan Affoué Tindo Sylvie +4 位作者 Gnagne Essoh Jean Eudes Yves Yacouba Zoungranan Touré Late Arsène Ekou Lynda Ekou Tchirioua 《American Journal of Analytical Chemistry》 CAS 2024年第11期347-356,共10页
The problem of water depollution is gaining importance, especially as regulatory standards concerning drinking water are increasingly strict. The different industries (textile industries) generate chemically stable po... The problem of water depollution is gaining importance, especially as regulatory standards concerning drinking water are increasingly strict. The different industries (textile industries) generate chemically stable pollutants such as methyl orange which make their degradation difficult. It is therefore necessary to find new, more effective techniques for the treatment of these discharges. Among the different solutions proposed to deal with this problem, we find advanced oxidation processes (POAs) which are clean and promising technologies in the field of wastewater depollution. In this regard, heterogeneous photocatalysis was used in an aqueous suspension of titanium oxide (TiO2) using a ultraviolet (UV) lamp as artificial radiation. The objective of this work is to study the influence of some operating parameters such as: the catalyst mass, the initial pollutant concentration, the volume of the solution and the pH of the solution, were examined. The results obtained showed that this photocatalyst made it possible to degrade 99.85% of the initial concentration of methyl orange (10 ppm), after 240 min of irradiation with an optimal mass of 0.50 g of TiO2 for a volume of 200 mL of methyl orange solution at pH = 3.0. 展开更多
关键词 DEPOLLUTION Methyl Orange TIO2 SLURRY
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Green Synthesis of Silver Nanoparticles Using Aqueous Orange and Lemon Peel Extract and Evaluation of Their Antimicrobial Properties
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作者 Amra Bratovcic Amna Dautovic 《Advances in Nanoparticles》 CAS 2024年第2期11-28,共18页
Green synthesis of silver nanoparticles (AgNPs) using aqueous extracts of orange and lemon peels, as a reducing agent, and silver nitrate salts as a source of silver ions is a promising field of research due to the ve... Green synthesis of silver nanoparticles (AgNPs) using aqueous extracts of orange and lemon peels, as a reducing agent, and silver nitrate salts as a source of silver ions is a promising field of research due to the versatility of biomedical applications of metal nanoparticles. In this paper, AgNPs were synthetized at different reaction parameters such as the type and concentration of the extracts, metal salt concentration, temperature, speed stirring, and pH. The antibacterial properties of the obtained silver nanoparticles against E. coli, as well as the physical and chemical characteristics of the synthesized silver nanoparticles, were investigated. UV-Vis spectroscopy was used to confirm the formation of AgNPs. In addition to green biogenic synthesis, chemical synthesis of silver nanoparticles was also carried out. The optimal temperature for extraction was 65˚C, while for the synthesis of AgNPs was 35˚C. The synthesis is carried out in an acidic environment (pH = 4.7 orange and pH = 3.8 lemon), neutral (pH = 7) and alkaline (pH = 10), then for different concentrations of silver nitrate solution (0.5 mM - 1 mM), optimal time duration of the reaction was 60 min and optimal stirring speed rotation was 250 rpm on the magnetic stirrer. The physical properties of the synthesized silver nanoparticles (conductivity, density and refractive index) were also studied, and the passage of laser light through the obtained solution and distilled water was compared. Positive inhibitory effect on the growth of new Escherichia coli colonies have shown AgNPs synthesized at a basic pH value and at a 0.1 mM AgNO<sub>3</sub> using orange or lemon peel extract, while for a 0.5 mM AgNO<sub>3 </sub>using lemon peel extract. 展开更多
关键词 Green Synthesis Silver Nanoparticles Orange and Lemon Peel Extract Antibacterial Activity Escherichia coli
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Design of an Interconnection Architecture and Sizing of Two (2) EPC Core Networks: The Case of Orange-Guinea
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作者 Mamadou Sadigou Diallo Kadiatou Aissatou Barry +4 位作者 Amadou Lamarana Bah Mamadou Sanoussy Camara Janvier Fotsing Amadou Barry Amadou Oury Bah 《Journal of Energy and Power Engineering》 CAS 2024年第2期59-70,共12页
With the arrival of the 4G and 5G,the telecommunications networks have experienced a large expansion of these networks.That enabled the integration of many services and adequate flow,thus enabling the operators to res... With the arrival of the 4G and 5G,the telecommunications networks have experienced a large expansion of these networks.That enabled the integration of many services and adequate flow,thus enabling the operators to respond to the growing demand of users.This rapid evolution has given the operators to adapt,their methods to the new technologies that increase.This complexity becomes more important,when these networks include several technologies to access different from the heterogeneous network like in the 4G network.The dimensional new challenges tell the application and the considerable increase in demand for services and the compatibility with existing networks,the management of mobility intercellular of users and it offers a better quality of services.Thus,the proposed solution to meet these new requirements is the sizing of the EPC(Evolved Packet Core)core network to support the 5G access network.For the case of Orange Guinea,this involves setting up an architecture for interconnecting the core networks of Sonfonia and Camayenne.The objectives of our work are of two orders:(1)to propose these solutions and recommendations for the heart network EPC sizing and the deployment to be adopted;(2)supply and architectural interconnection in the heart network EPC and an existing heart network.In our work,the model of traffic in communication that we use to calculate the traffic generated with each technology has link in the network of the heart. 展开更多
关键词 5G network 4G network(EPS(evolved packet system)) 3G network(UMTS:Universal Mobile Telecommunications System) EPC network of the heart architecture dimensional Orange Guinea technology service
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An Analysis of Specific Categories of Birth Defects and Developmental Disabilities for Children of Participants of the Air Force Health Study
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作者 George J. Knafl 《Open Journal of Epidemiology》 2024年第2期312-330,共19页
Background: The Air Force Health Study collected reproductive outcomes for live-born children of male Air Force veterans of the Vietnam War. Methods: Dioxin values for participants were obtained from blood samples. An... Background: The Air Force Health Study collected reproductive outcomes for live-born children of male Air Force veterans of the Vietnam War. Methods: Dioxin values for participants were obtained from blood samples. Analyses were conducted of occurrence of 16 specific categories of birth defects and developmental disabilities. Children were categorized as conceived before and after the start of participants’ Vietnam War service. Children conceived before the start of Vietnam War service were treated as being conceived when their fathers had unquantifiable dioxin values. Children conceived after the start of Vietnam War service for participants with missing dioxin values were excluded from primary analyses, but were used to assess the impact of their exclusion on conclusions. Correlation between values for specific categories for multiple children fathered by the same participant was accounted for. The dose-response relationship was treated as a step function increasing for dioxin values larger than adaptively identified individual thresholds changing with the specific category. Results: For 15 of 16 specific categories, the probability of occurrence increased substantially for a sufficiently high dioxin level above identified thresholds. Exclusion of children due to missing dioxin likely did not affect these results. Conclusions: Results supported the conclusion of substantial adverse effects on a wide variety of specific categories of birth defects and developmental disabilities due to sufficiently high exposures to dioxin, a toxic contaminant of Agent Orange used for herbicide spraying in the Vietnam War. Results may hold more generally, but might also have been affected by a variety of limitations. 展开更多
关键词 Agent Orange Air Force Health Study Birth Defects Developmental Disabilities DIOXIN Dose-Response Relationship Vietnam War
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Summary of Chemical Constituents and Pharmacological Effects of Essential Oil of Sweet Orange from Southern Jiangxi Province
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作者 Jing Zhang Yuhao Liu Wenjing Zong 《Journal of Clinical and Nursing Research》 2024年第12期118-124,共7页
Gannan sweet orange essential oil has garnered significant attention due to its diverse chemical composition and pharmacological activities.The main active ingredients include sabinene,limonene,and linalool,which exhi... Gannan sweet orange essential oil has garnered significant attention due to its diverse chemical composition and pharmacological activities.The main active ingredients include sabinene,limonene,and linalool,which exhibit antioxidant,anti-inflammatory,antibacterial,and analgesic properties.This essential oil has potential applications in the development of medicinal products.This paper reviews the primary chemical composition and pharmacological effects of Jiangxi orange flower essential oil,highlighting the need for future research to focus on its biological activity and clinical application potential.Additionally,it emphasizes the importance of optimizing extraction and detection technologies to enhance its application value in medicine and other industries,thereby promoting the development of Gannan’s sweet orange industry. 展开更多
关键词 Gannan sweet orange Sweet orange essential oil Chemical composition Pharmacological activity
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PERSIMMONS
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作者 Campbell Chang Ruth Devlin 《空中英语教室(初级版.大家说英语)》 2024年第9期43-44,56,共3页
Persimmons are a delicious fruit that grows on trees.They can be round or long and can come in different colors,such as orange and red.Persimmons taste sweet and a bit like honey.People think of persimmons as a fall f... Persimmons are a delicious fruit that grows on trees.They can be round or long and can come in different colors,such as orange and red.Persimmons taste sweet and a bit like honey.People think of persimmons as a fall fruit because they are ripe in the fall.People can pick them and eat them fresh from the tree.They can also use them to make dried persimmons. 展开更多
关键词 ORANGE DRIED HONEY
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Cranberry Sauce Recipe
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作者 Maria Chiu 《空中英语教室(初级版.大家说英语)》 2024年第11期27-29,53,共4页
Cranberry Sauce Ingredients 1 cupsugar 1/2 cup orange juice 1/2cup water 4cups fresh orfrozen cranberries 1 piece of orange peel Directions 1.Rinsethecranberries.2.Put sugar,orange juice and water in a pot.Let it boil.
关键词 ORANGE SUGAR FROZEN
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Do You Understand Addition?
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作者 方晓燕 《疯狂英语(双语世界)》 2024年第3期25-28,51,共5页
I.Add to find how many cubes there are in all.(1)There is 1 purple cube and 2 yellow cubes.(2)There are 2 orange cubes and 3 blue cubes.(3)There are 5 green cubes and 1 purple cube.(4)There are 3 orange cubes and 1 bl... I.Add to find how many cubes there are in all.(1)There is 1 purple cube and 2 yellow cubes.(2)There are 2 orange cubes and 3 blue cubes.(3)There are 5 green cubes and 1 purple cube.(4)There are 3 orange cubes and 1 blue cube. 展开更多
关键词 ORANGE YELLOW PURPLE
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橘子洲风情画卷
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作者 李哲轩 刘易(指导) 《疯狂英语(初中天地)》 2024年第8期66-67,共2页
During Labour Day this year,Orange Isle was undoubtedly one of the most popular tourist destinations in Changsha.Located between Yuelu Mountain and Tianxin Pavilion,this thousand-year-old sandbar has long been a natur... During Labour Day this year,Orange Isle was undoubtedly one of the most popular tourist destinations in Changsha.Located between Yuelu Mountain and Tianxin Pavilion,this thousand-year-old sandbar has long been a natural paradise from the past to the present.The name of Orange Isle may originate from the poem,in which the isle is described as“The orange grows by the side of the Xiang River”(橘生湘水侧). 展开更多
关键词 ORANGE DOUBT DESTINATION
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PET FISH
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作者 Rhonda Telfer 《空中英语教室(初级版.大家说英语)》 2024年第9期7-8,50,共3页
Do you want some quiet,colorful pets?Try fish!Get a tank and add clean water to it.Now you have a home for fish!Goldfish are orange,red or yellow.Guppies are small and fun.They can be many colors.Fighting fish have wi... Do you want some quiet,colorful pets?Try fish!Get a tank and add clean water to it.Now you have a home for fish!Goldfish are orange,red or yellow.Guppies are small and fun.They can be many colors.Fighting fish have wide and beautiful tails.You can also add little shrimp to a fish tank.Clean the tank for the fish.Put plants in your tank,too.Plants add airto the water. 展开更多
关键词 TANK ORANGE CLEAN
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Color of the Year 2024: Peach Fuzz
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《China Textile》 2024年第1期50-51,共2页
Pantone has declared Pantone 13-1023Peach Fuzz as its Color of the Year for 2024.This soft peach tone reflects comforting warmth and represents a desire for unity,peace and personal well-being.The calming shade,a subl... Pantone has declared Pantone 13-1023Peach Fuzz as its Color of the Year for 2024.This soft peach tone reflects comforting warmth and represents a desire for unity,peace and personal well-being.The calming shade,a sublime blend of pink and orange,suggests fresh softness,signifying an environment that invites relaxation,reccovery and growth.The delicatehue of Pantone 13-1023 Peach Fuzz not only awakens our senses to the tactile and enveloping warmth of the color,but also influences our sense of peace and overall well-being. 展开更多
关键词 PEACH PEACE ORANGE
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Review and Analysis: Evaluation of the Impacts and Consequences of Using Agricultural Herbicides as Military Chemical Weapons in Second Indochina War
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作者 David R. Speidel Kenneth R. Olson 《Open Journal of Soil Science》 2024年第8期471-498,共28页
The legacy of the human misery caused by the application of the herbicides including Agent Purple and Agent Orange contaminated with unknown amounts of dioxin TCDD and Agent Blue, the arsenic-based herbicide, sprayed ... The legacy of the human misery caused by the application of the herbicides including Agent Purple and Agent Orange contaminated with unknown amounts of dioxin TCDD and Agent Blue, the arsenic-based herbicide, sprayed over the jungles, rice fields, and hamlets of Vietnam is still haunting us today. Why did this happen? Could it have been prevented? Was it necessary United States military strategy? Was it an intentional decision to inflict this blight on the enemy soldiers and the Vietnamese, Cambodian, and Laotian civilians, to poison their land and cause generations of harm? Alternatively, was it an unpreventable accident in the march of military history? What patterns in the U.S. government’s thought process could be identified as the cause, which led to the decision to use these herbicides as tactical chemical weapons? If the introduction of herbicide (chemical) weapons had not been made, would the outcome of the Vietnam War and the Secret Wars in Laos and Cambodia have been any different? The objective of this treatise is to outline the role of world events and backgrounds and the role of the leaders, U.S. military, CIA, USDA, U.S. State Department, the U.S. President appointed Ambassadors to Vietnam and Laos, chemical companies, and President Diệm’s Republic of Vietnam (RVN) government and military. Their collective advice led to the decision to use herbicides as military and environmental chemical weapons in the Second Indochina War. Were the National interests achieved by U.S. military strategy in the RVN using herbicide weapons worth the long-term environmental and human health consequences in Vietnam, Cambodia, and Laos? Did it impact the outcome of the Second Indochina War? 展开更多
关键词 Second Indochina War Cambodia Laos South Vietnam Vietnam War Tactical Herbicides Agent Blue Agent Orange Agent Purple Dioxin TCDD Arsenic
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FeVO_4可见光光催化降解有毒有机污染物 被引量:7
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作者 饶志 顾彦 +3 位作者 黄春迎 何燕 黄应平 张爱清 《环境化学》 CAS CSCD 北大核心 2013年第4期564-571,共8页
采用液相沉淀法制备了FeVO4光催化剂,以X射线衍射法(XRD)、X射线光电子能谱(XPS)、紫外可见漫反射(UV-Vis DRS)对其进行了表征.在可见光(λ≥420 nm)照射下,研究了FeVO4活化H2O2降解染料OrangeⅡ及无色小分子2,4-二氯苯酚(DCP)的光催化... 采用液相沉淀法制备了FeVO4光催化剂,以X射线衍射法(XRD)、X射线光电子能谱(XPS)、紫外可见漫反射(UV-Vis DRS)对其进行了表征.在可见光(λ≥420 nm)照射下,研究了FeVO4活化H2O2降解染料OrangeⅡ及无色小分子2,4-二氯苯酚(DCP)的光催化活性.同时优化了光催化剂FeVO4的制备条件、探讨了光催化降解OrangeⅡ体系中H2O2浓度、FeVO4用量及pH对其降解作用的影响.结果表明,在可见光照射下,H2O2浓度为1.50×10-3 mol.L-1,FeVO4量为0.17 g.L-1,pH值为6.4时,FeVO4对OrangeⅡ光催化降解活性最好,14 h后对OrangeⅡ的矿化率达到51.6%.在光催化反应条件下,12 h后对DCP的降解率达到64.3%,表明FeVO4具有可见光催化特性.运用ESR技术跟踪测定光催化降解过程中氧化物种的变化,发现FeVO4活化H2O2产生羟基自由基(.OH),表明FeVO4的光催化降解过程主要涉及.OH的氧化历程. 展开更多
关键词 FEVO4 光催化 OrangeⅡ
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