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含铁柱撑膨润土光催化降解Orange Ⅱ 被引量:8
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作者 李益民 温丽华 +1 位作者 刘颖 李海洋 《功能材料》 EI CAS CSCD 北大核心 2005年第6期874-876,880,共4页
制备了两种含铁柱撑膨润土(FeAlBent和FeBent),用XRD、BET、TEM对它们进行了性能表征。以偶氮染料OrangeⅡ为目标降解物,考察了它们作为复相Fenton催化剂的光催化性能,以及溶液的pH、H2O2浓度、催化剂用量对OrangeⅡ降解的影响,并与相... 制备了两种含铁柱撑膨润土(FeAlBent和FeBent),用XRD、BET、TEM对它们进行了性能表征。以偶氮染料OrangeⅡ为目标降解物,考察了它们作为复相Fenton催化剂的光催化性能,以及溶液的pH、H2O2浓度、催化剂用量对OrangeⅡ降解的影响,并与相应的均相Fenton反应进行了比较。结果表明FeAlBent和FeBent具有很高的比表面积(分别为194.2和114.6m2/g),用FeAlBent或FeBent作光催化剂的复相光助Fenton反应的催化性能明显优于相应的均相光助Fenton反应。此外复合铁铝柱撑膨润土(FeAlBent)比单一的铁柱撑膨润土(FeBent)在反应过程中具有更低的铁离子溶出量,它们还具有分离简单、重复使用性好等特点。 展开更多
关键词 光催化降解 铝铁柱撑膨润土 光助Fenton orange
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Photoelectrocatalytic activity of immobilized Yb doped WO3 photocatalyst for degradation of methyl orange dye 被引量:4
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作者 S.V.Mohite V.V.Ganbavle K.Y.Rajpure 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2017年第3期440-447,共8页
Pure WOand Yb:WOthin films have been synthesized by spray pyrolysis technique. Effect of Yb doping concentration on photoelectrochemical, structural, morphological and optical properties of thin films are studied. X-r... Pure WOand Yb:WOthin films have been synthesized by spray pyrolysis technique. Effect of Yb doping concentration on photoelectrochemical, structural, morphological and optical properties of thin films are studied. X-ray diffraction analysis shows that all thin films are polycrystalline nature and exhibit monoclinic crystal structure. The 3 at% Yb:WOfilm shows superior photoelectrochemical(PEC) performance than that of pure WOfilm and it shows maximum photocurrent density(Iph= 1090 μA/cm) having onset potentials around +0.3 V/SCE in 0.01 M HClO. The photoelectrocatalytic process is more effective than that of the photocatalytic process for degradation of methyl orange(MO) dye. Yb doping in WOphotocatalyst is greatly effective to degrade MO dye. The enhancement in photoelectrocatalytic activity is mainly due to the suppressing the recombination rate of photogenerated electron-hole pairs. The mineralization of MO dye in aqueous solution is studied by measuring chemical oxygen demand(COD) values. 展开更多
关键词 DEGRADATION Photocatalytic activity Methyl orange dye Thin film Yb doped WO3 Spray pyrolysis technique
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Orange dye polyaniline composite based impedance humidity sensors 被引量:3
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作者 Muhammad Tariq Saeed Chani Kh. S. Karimov +2 位作者 F. A. Khalid S. Z. Abbas M. B. Bhatty 《Chinese Physics B》 SCIE EI CAS CSCD 2013年第1期161-166,共6页
This study presents the fabrication and investigation (PANI) composite films. A blend of 3 wt.% OD with 1 of humidity sensors based on orange dye (OD) and polyaniline wt.% PANI was prepared in 1 ml water. The comp... This study presents the fabrication and investigation (PANI) composite films. A blend of 3 wt.% OD with 1 of humidity sensors based on orange dye (OD) and polyaniline wt.% PANI was prepared in 1 ml water. The composite films were deposited on glass substrates between pre-deposited silver electrodes. The gap between the electrodes was 45 um. The sensing mechanism was based on the impedance and capacitance variations due to the absorption/desorption of water vapor. It was observed that with the increase in relative humidity (RH) from 30% to 90%, the impedance decreases by 5.2 × 10^4 and 8.8 × 10^3 times for the frequencies of 120 Hz and 1 kHz, respectively. The impedance-humidity relationship showed a more uniform change compared to the capacitance-humidity relationship in the RH range of 30% to 90%. The consequence of annealing, measuring frequency, response and recovery time, and absorption-desorption behavior of the humidity sensor were also discussed in detail. The annealing resulted in an increase in sensitivity of up to 2.5 times, while the measured response time and recovery time were 34 s and 450 s, respectively. The impedance-humidity relationship was simulated. 展开更多
关键词 organic-organic composite humidity sensor POLYANILINE orange dye
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Formation of the Inclusion Complex of Orange Ⅱ with β-Cyclodextrin and Its Photostability 被引量:2
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作者 LuPing LiuBin +2 位作者 ZhangZhe WuFeng DengNan-sheng 《Wuhan University Journal of Natural Sciences》 CAS 2003年第04A期1147-1152,共6页
Inclusion complex of Orange II with β-Cyclodextrin (β-CD) and the anti-photolysis effect under UV-light were investigated. The molar ratio of inclusion complex of β-Cyclodextrin and Orange Ⅱ is 1∶1. The formation... Inclusion complex of Orange II with β-Cyclodextrin (β-CD) and the anti-photolysis effect under UV-light were investigated. The molar ratio of inclusion complex of β-Cyclodextrin and Orange Ⅱ is 1∶1. The formation constant K=1.236×10 3 L/mol was determined by the UV and Fluorescence spectra respectively, which was quite in accordance with the calculation with a modified Benesi-Hildbrand equation. The inclusion complex was characterized by the IR spectra and the molar ratio of inclusion complex is 1∶1 too. The formation constant K=1.266×10 3 L/mol was determined by 1 H NMR analysis and was nearly the same by UV and fluorescence spectra. The photocatalytic decolorization rate of Orange Ⅱ solutions containing β-CD and TiO_ 2 was smaller by 51.9% than that of the Orange Ⅱ solutions only containing TiO_ 2 , while in the case of direct photolysis of Orange Ⅱ solutions, β-CD can lower the photolysis rate by 48.1% under UV-light. This result indicates β-CD can inhibit the photolysis and photocatalytic decolorization of Orange Ⅱ under UV-light. The β-CD inclusion complex was found to be persistent to UV-light photolysis. 展开更多
关键词 Β-CYCLODEXTRIN orange inclusion complex PHOTOSTABILITY
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Activated persulfate by DBD plasma and activated carbon for the degradation of acid orange Ⅱ 被引量:1
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作者 Weigang CHEN Haixia WU +2 位作者 Jiawei FAN Zhi FANG Shaohua LIN 《Plasma Science and Technology》 SCIE EI CAS CSCD 2020年第3期59-65,共7页
In this study, the effect of activated peroxydisulfate(PDS) by dielectric barrier discharge(DBD) plasma and activated carbon(HGAC) on the removal of acid orange Ⅱ(AOⅡ) was investigated. The effects of applied voltag... In this study, the effect of activated peroxydisulfate(PDS) by dielectric barrier discharge(DBD) plasma and activated carbon(HGAC) on the removal of acid orange Ⅱ(AOⅡ) was investigated. The effects of applied voltage, PDS dosage, HGAC dosage, initial pH value, and inorganic anions on the removal rate of AOⅡ were discussed. The main free radicals degrading azo dyes during the experiment were also studied. Experimental results show that the removal rate of AOⅡ in DBD/HGAC/PDS synergistic system is much higher than that in the single system. With the applied voltage of 16 kV, HGAC dosage of 1 g l-1, PDS and AOⅡ molar ratio of 200:1, initial pH value of 5.4 and concentration of AOⅡ solution of 20 mg l-1, the removal rate of AOⅡ reached 97.6% in DBD/HGAC/PDS process after 28 min of reaction.Acidic and neutral conditions are beneficial for AOⅡ removal. Sulfate and hydroxyl radicals play an important role in the removal of AOⅡ. Inorganic anions are not conducive to the removal of AOⅡ. 展开更多
关键词 DBD plasma ACTIVATED carbon PERSULFATE SULFATE radical acid orange
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超高效液相色谱-串联质谱法测定禽用饲料中苏丹红、罗丹明B和酸性橙Ⅱ等6种染色剂含量
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作者 李宏 贺习文 +3 位作者 晁娟娟 李俊 武治勇 杨森 《中国饲料》 北大核心 2024年第3期118-124,共7页
本研究基于超高效液相色谱-串联质谱(UPLC-MS/MS)结合QuEChERS快速净化方法,旨在建立禽用饲料中苏丹红等6种化工染料的定量分析方法。样品用乙腈提取,C_(18)+PSA净化材料净化,净化液经Hypersil GOLD C_(18)反向色谱柱分离,在电喷雾离子... 本研究基于超高效液相色谱-串联质谱(UPLC-MS/MS)结合QuEChERS快速净化方法,旨在建立禽用饲料中苏丹红等6种化工染料的定量分析方法。样品用乙腈提取,C_(18)+PSA净化材料净化,净化液经Hypersil GOLD C_(18)反向色谱柱分离,在电喷雾离子源(ESI)正、负离子双扫描模式下多反应监测(MRM),以标准曲线外标法定量。结果表明:6种化合物线性关系良好;相关系数(R^(2))>0.999,4种苏丹红和酸性橙Ⅱ检出限(LOD)为0.5μg/kg,定量限(LOQ)为1.0μg/kg,罗丹明B LOD为0.05μg/kg,LOQ为0.1μg/kg。添加回收率为90%~110%,相对标准偏差<10%。本研究方法具有快速、灵敏等优势,可实现禽用饲料中6种化工染料的准确定量分析,为禽用饲料的质量安全提供技术参考。 展开更多
关键词 禽用饲料 苏丹红 罗丹明B 酸性橙 超高效液相色谱-串联质谱法 QuEChERS
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氮掺杂多孔污泥炭活化过二硫酸盐降解橙黄Ⅱ
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作者 李文奇 罗才贵 +1 位作者 熊瑜婷 罗仙平 《工业水处理》 CAS CSCD 北大核心 2024年第3期133-141,共9页
以市政污泥为碳源、碳酸氢钾为活化剂、尿素为氮源,制备了氮掺杂多孔污泥生物炭(NKBC),并采用N2吸附-脱附实验、SEM、XRD、XPS对其比表面积、表面特征进行了系列表征与分析,结果表明,NKBC具有较大的比表面积,由于N负载于NKBC孔道内,其... 以市政污泥为碳源、碳酸氢钾为活化剂、尿素为氮源,制备了氮掺杂多孔污泥生物炭(NKBC),并采用N2吸附-脱附实验、SEM、XRD、XPS对其比表面积、表面特征进行了系列表征与分析,结果表明,NKBC具有较大的比表面积,由于N负载于NKBC孔道内,其表面褶皱、缺陷较多,活化位点较多。将NKBC用于活化过二硫酸盐(PDS)降解橙黄Ⅱ,考察NKBC/PDS体系降解橙黄Ⅱ的性能,结果表明,在加入PDS 20 min后,NKBC/PDS体系对橙黄Ⅱ的降解率高达99.7%;该体系可在较宽pH范围(3~11)及常见阴离子存在条件下发挥作用。自由基猝灭实验和EPR光谱结果表明,NKBC/PDS体系降解橙黄Ⅱ的主要活性物种有·OH、SO_(4)^(·-)和^(1)O_(2),且以^(1)O_(2)为主。该研究所构建的NKBC/PDS体系可应用于染料废水的处理,实现“以废治废”的目标。 展开更多
关键词 氮掺杂 污泥生物炭 过二硫酸盐 橙黄
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Orientation in Nematic Liquid Crystals Doped with Orange Dyes and Effect of Carbon Nanoparticles
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作者 Ahmet Alicilar Fatih Akkurt Nihan Kaya 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2010年第3期368-372,I0002,共6页
Some properties of nematic liquid crystal E7 doped with two disperse orange dyes used together and effect of addition of carbon nanoparticles (single walled carbon nanotube or fullerene C60) on them were studied. Tw... Some properties of nematic liquid crystal E7 doped with two disperse orange dyes used together and effect of addition of carbon nanoparticles (single walled carbon nanotube or fullerene C60) on them were studied. Two dyes (disperse orange 11 and 13) having high solubility and order parameter were used as co-dopants. A notable increase in order parameter was obtained comparing to that of liquid crystal doped with single dye. When carbon nanoparticles were used as dopant, a decrease in order parameter was observed at low temperatures while it increased at high temperatures. When applied voltage changed, the order parameter abruptly increased in its threshold value and saturated in higher voltages as expected. An appreciable change in textures was not observed with addition of dopants. This addition gave rise to an increase in nematic-isotropic phase transition temperatures compared with that of pure liquid crystal. 展开更多
关键词 Liquid crystal Disperse orange dye Carbon nanoparticle Order parameter
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Dyeing PET Textile with C.I.Disperse Red 60 and C.I. Disperse Orange 25 in Supercritical CO_2
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作者 李志义 孟庭宇 +2 位作者 刘学武 夏远景 胡大鹏 《Journal of Donghua University(English Edition)》 EI CAS 2008年第4期379-383,共5页
For a better understanding of the feasibility of supercritieal fluid dyeing (SFD) and more available information for the process development, the experiments of dyeing PET textile with C.I. disperse red 60 (anthraq... For a better understanding of the feasibility of supercritieal fluid dyeing (SFD) and more available information for the process development, the experiments of dyeing PET textile with C.I. disperse red 60 (anthraquinone type) and C. I. disperse orange 25 (azo type) in supercritieal CO2 were carried out with a high-pressure dyeing apparatus at temperatures from 80 to 130℃ and pressure up to 31 MPa. The effect of operating conditions on color yield (K/S) was investigated in SFD experiment, and the optimum operating conditions for the above two disperse dyes were obtained as follows: the temperature 120℃, the pressure 25 MPa and the dyeing time 100 min. As compared with SFD, the conventional water dyeing (CWD) was carried out with the same dyes and textile. The results show that the better fastness, levelness and apparent color can be achieved in SFD and the SFD process has many significant advantages over the CWD process. 展开更多
关键词 supercritical fluid dyeing conventional water dyeing C I. disperse red 60 C.I. disperse orange 25 PET textile
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Adsorption of Orange II Dye using Activated Carbon Produced from Iraqi Date-Palm Stones
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作者 Ismail Ibrahim Al-Khateeb Ali A. Al-Mehemdy 《Journal of Chemistry and Chemical Engineering》 2011年第8期715-719,共5页
A synthetic activated carbon was manufactured from date-palm stones using zinc chloride, cadmium chloride and sodium chloride at different temperatures and atmospheres. Specific surface area, RC and pH were measured a... A synthetic activated carbon was manufactured from date-palm stones using zinc chloride, cadmium chloride and sodium chloride at different temperatures and atmospheres. Specific surface area, RC and pH were measured and the activated carbon was used to absorb the orange II dye. Adsorption equilibrium was also studied, and it was found that the adsorption process on the synthetic activated carbon fit very well with the Langmuir isotherm model and less fit with Freundlich isotherm model. The specific surface area was highly affected by increasing temperature of combustion while the atmosphere of combustion had a little effects on surface area. The results showed that the atmosphere and temperature had no such effect on RC values. However, the RC of zinc chloride samples gave the highest values compared to that of cadmium chloride or sodium chlorides. The values of pH indicated an acid medium for cadmium chloride to alkali medium for sodium chloride, while the samples of zinc chloride showed a neutral medium. 展开更多
关键词 Activated carbon orange II dye date-palm stones: adsorption.
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Sonochemical Decolorization of Methyl Orange in Aqueous Solution
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作者 邢铁玲 Chu K.H. 陈国强 《Journal of Donghua University(English Edition)》 EI CAS 2006年第5期127-130,共4页
The sonochemical decolorization of Methylene Orange was studied using a 24 kHz Ultrasound device with a 1.4 cm diameter horn. pH, power density, the effects of pH and power density on decolorization were discussed. Th... The sonochemical decolorization of Methylene Orange was studied using a 24 kHz Ultrasound device with a 1.4 cm diameter horn. pH, power density, the effects of pH and power density on decolorization were discussed. The combined effect of radiate time, the initial concentration of dyes and the addition of Fe^2+ on the decolorization was studied using response surface methodology. The results showed that the factorial central composite design was successfully employed for experimental design and predication of the results. AtpH = 2.8, T=30℃, power denstity= 300 W/L and Fe^2+ of 2 mg/L, the decolorization percentage of 5 mg/L dye solution reached 96% after 60 mill ultreatment. The rate of decolorization of the dye was greatly improved in the presence of Fe^2+. The sonolysis of the dye followed first-order kinetics. 展开更多
关键词 SONOCHEMICAL methyl orange dyeS DECOLORIZATION response surface methodology.
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高熵合金与E-Fenton试剂处理染料废水实验研究
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作者 焦守峰 《山西化工》 CAS 2024年第6期20-22,共3页
处理染料废水的电芬顿(Electro-Fenton,E-Fenton)技术已经展现出显著的优势。然而,在实际应用中,电极材料的耐用性和腐蚀问题一直是限制其进一步发展的关键因素。为了解决这些问题,并进一步提高降解效率,研究决定采用高熵合金作为阳极,... 处理染料废水的电芬顿(Electro-Fenton,E-Fenton)技术已经展现出显著的优势。然而,在实际应用中,电极材料的耐用性和腐蚀问题一直是限制其进一步发展的关键因素。为了解决这些问题,并进一步提高降解效率,研究决定采用高熵合金作为阳极,并结合E-Fenton试剂进行实验。目标是以甲基橙为模拟污染物,对染料废水进行降解处理。实验结果显示,在反应进行5 h后,Al_(0.3)CoCrFe_(2)Ni高熵合金的最大腐蚀速率仅为5.94 g/cm^(2)·h。与Al_(0.3)CoCrFe_(1.7)Ni、Al_(0.3)CoCrFe_(1.3)Ni、Al_(0.3)CoCrFe_(0.9)Ni和铁片的腐蚀速率相比,分别降低了44.17%、63.44%、78.06%和84.59%。Al_(0.3)CoCrFe_(2)Ni和Al_(0.3)CoCrFe_(1.7)Ni合金均出现了Fe_(2)O_(3)和Fe_(3)O_(4)的衍射峰。这一研究结果表明,高熵合金与E-Fenton试剂联合处理染料废水的方法,有效地提高了电极材料的耐腐蚀性。这不仅为染料废水的处理提供了新的解决方案,同时也进一步证实了高熵合金在环保领域的应用潜力。 展开更多
关键词 E-Fenton 高熵合金 染料废水 甲基橙 耐腐蚀性
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转鼓式内电解装置处理水中酸性橙Ⅱ染料 被引量:16
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作者 刘海宁 曲久辉 +2 位作者 李国亭 刘会娟 雷鹏举 《环境科学学报》 CAS CSCD 北大核心 2007年第9期1425-1430,共6页
设计制作了转鼓式内电解反应装置,将铁屑与活性炭按体积比为1∶1混匀后装填在转鼓内,对偶氮染料酸性橙Ⅱ(AOII)进行降解实验,考察了溶液pH、转鼓转速和溶液浓度对AO II降解过程的影响.结果表明,AOII降解过程符合准一级动力学方程,酸性... 设计制作了转鼓式内电解反应装置,将铁屑与活性炭按体积比为1∶1混匀后装填在转鼓内,对偶氮染料酸性橙Ⅱ(AOII)进行降解实验,考察了溶液pH、转鼓转速和溶液浓度对AO II降解过程的影响.结果表明,AOII降解过程符合准一级动力学方程,酸性条件有利于AOII的降解,转鼓转速过快和溶液浓度过高则不利于AO II的降解.解决了铁炭床长时间运行板结结块的问题.AOII分子在转鼓式内电解的作用下,其可见光和紫外光区的特征吸收峰逐渐降低直至消失,并新生成更容易生物降解的对氨基苯磺酸盐. 展开更多
关键词 内电解 转鼓 酸性橙II 降解
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生物炭催化过硫酸盐脱色偶氮染料金橙Ⅱ 被引量:10
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作者 刘娜 王柳 +3 位作者 邱华 Alberto Bento Charrua 王航 王锐 《吉林大学学报(地球科学版)》 EI CAS CSCD 北大核心 2014年第6期2000-2009,共10页
生物炭作为一种廉价易得的材料,在土壤修复等各方面的功能已引起广泛关注,但其催化作用却鲜有研究。首次对生物炭(biochar-BC)催化过硫酸盐(Na2S2O8-PS)使偶氮染料金橙Ⅱ(AO7)脱色的可行性进行研究,对影响催化体系脱色效率的因素(包括p... 生物炭作为一种廉价易得的材料,在土壤修复等各方面的功能已引起广泛关注,但其催化作用却鲜有研究。首次对生物炭(biochar-BC)催化过硫酸盐(Na2S2O8-PS)使偶氮染料金橙Ⅱ(AO7)脱色的可行性进行研究,对影响催化体系脱色效率的因素(包括pH、生物炭质量浓度和PS/AO7摩尔比)进行探讨,同时研究了生物炭的重复利用效果及前后性质变化。结果表明:PS/BC体系明显比单独的PS体系脱色效果好;两个反应体系都遵循一级反应动力学;PS/BC体系反应的最适pH接近中性;生物炭质量浓度越大,脱色效果越好;PS/AO7摩尔比越大,脱色效果越好,但是催化效果却没有相应的改善;生物炭重复利用后对AO7仍然有脱色效果;BC的孔大多位于层状结构表面,且为小孔,重复使用后,表面孔会堵塞;除了灰分和氧元素外,其他元素(C、N、H、S)含量都有一定程度的减小;BC表面官能团种类很多,主要有C=O、C=C、C-O、C-H,芳香族C=C和C-H以及-OH官能团;BC重复使用后-OH峰会消失。综上述,生物炭可以催化过硫酸盐对偶氮染料AO7进行脱色,原理是BC表面的-OH官能团与PS反应生成硫酸根自由基去除AO7。 展开更多
关键词 生物炭 过硫酸盐 偶氮染料 金橙
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橘子皮化学改性及其对Cu(Ⅱ)离子的吸附性能 被引量:19
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作者 冯宁川 郭学益 +1 位作者 梁莎 田庆华 《中国有色金属学报》 EI CAS CSCD 北大核心 2008年第E01期148-154,共7页
以橘子皮为基体,经环氧氯丙烷交联后,以Ce^4+为引发剂将丙烯酸甲酯单体接枝到橘子皮上,再经过皂化制备改性橘子皮生物吸附剂。研究溶液pH、吸附时间和Cu^2+初始浓度对生物吸附剂吸附性能的影响。结果表明,在pH值为5.5,Cu^2+初... 以橘子皮为基体,经环氧氯丙烷交联后,以Ce^4+为引发剂将丙烯酸甲酯单体接枝到橘子皮上,再经过皂化制备改性橘子皮生物吸附剂。研究溶液pH、吸附时间和Cu^2+初始浓度对生物吸附剂吸附性能的影响。结果表明,在pH值为5.5,Cu^2+初始质量浓度为50mg/L,吸附时间为3h的条件下,该生物吸附剂对Cu^2+去除率为94.6%,吸附容量为24.41mg/g。Cu^2+在该生物吸附剂上的吸附过程可以用准二级动力学方程很好地描述。吸附等温线结果表明,该生物吸附剂对Cu^2+的吸附用Freundlich方程拟合效果优于用Langmuir方程拟合效果。将该生物吸附剂用于含Cu^2+ 5.8mg/L的电镀废水,Cu^2+去除率可达97%。通过红外光谱表征该生物吸附剂的结构,说明羧基和羟基与金属离子的结合引起该生物吸附剂对Cu^2+的吸附。该生物吸附剂可以再生重复使用4次以上。 展开更多
关键词 橘子皮 化学改性 Cu()离子 生物吸附
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滑动弧等离子体处理酸性橙Ⅱ废水 被引量:18
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作者 刘亚纳 严建华 +2 位作者 李晓东 戴尚莉 岑可法 《化工学报》 EI CAS CSCD 北大核心 2008年第1期221-227,共7页
采用气液两相滑动弧等离子体降解酸性橙Ⅱ,研究了酸性橙Ⅱ的降解动力学及降解机理。结果表明:当电压为10 kV,载气为O2,气体流速为0.4 m3.h-1,废水流量为20 ml.min-1,电极间最窄处距离为3.5 mm,溶液浓度在300 mg.L-1以下时,滑动弧等离子... 采用气液两相滑动弧等离子体降解酸性橙Ⅱ,研究了酸性橙Ⅱ的降解动力学及降解机理。结果表明:当电压为10 kV,载气为O2,气体流速为0.4 m3.h-1,废水流量为20 ml.min-1,电极间最窄处距离为3.5 mm,溶液浓度在300 mg.L-1以下时,滑动弧等离子体对酸性橙Ⅱ的降解符合一级动力学规律。检测了纯水放电时H2O2、O3生成量以及OH.的相对量。运用紫外光谱(UV-Vis)、离子色谱(IC)、色谱-质谱联用(GC-MS)等方法,测定出酸性橙Ⅱ的主要降解产物有乙酸、乙二酸、丙二酸、苯酚、3-羟基苯乙酮、萘、苯磺酸、邻苯二甲酸(酐)、β-萘酚等,并依此推测酸性橙Ⅱ的降解机理,即羟基自由基攻击酸性橙Ⅱ分子上与萘环相连的C—N键,导致C—N键的断裂,进而染料脱色矿化。 展开更多
关键词 等离子体 滑动弧放电 酸性橙 降解率
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HPLC法同时测定食品中酸性橙Ⅱ和碱性嫩黄O的含量 被引量:12
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作者 李莎 王银花 +2 位作者 叶麟 申光辉 张志清 《食品与发酵工业》 CAS CSCD 北大核心 2017年第3期234-238,246,共6页
建立了同时检测食品中酸性橙Ⅱ和碱性嫩黄O两种非食用色素HPLC方法。样品经V(甲醇):V(水)=70:30超声提取,经C_(18)小柱净化后上样。色谱条件采用Kromasil C_(18)色谱柱(4.6 mm×150 mm,5μm),流动相为V(甲醇):V(50 mmol/L乙酸铵)=50... 建立了同时检测食品中酸性橙Ⅱ和碱性嫩黄O两种非食用色素HPLC方法。样品经V(甲醇):V(水)=70:30超声提取,经C_(18)小柱净化后上样。色谱条件采用Kromasil C_(18)色谱柱(4.6 mm×150 mm,5μm),流动相为V(甲醇):V(50 mmol/L乙酸铵)=50:50溶液,流速1.0 m L/min,检测波长450 nm,柱温35℃。结果表明:酸性橙Ⅱ和碱性嫩黄O在进样浓度2.5~12.5μg/m L内呈良好的线性关系,线性方程分别为Y=2×10~6X-1 240.1(r=0.999 9),Y=7×10~6X-5 284.2(r=0.999 6),二者检出限分别为0.120和0.032 mg/kg,在5类食品中的加标回收率分别为80.33%~90.47%和80.17%~102.64%。经方法学评价和抽样分析,该方法简便准确,重复性好,可作为食品安全检测中同时检测酸性橙Ⅱ和碱性嫩黄O参考方法。 展开更多
关键词 食品安全 酸性橙 碱性嫩黄O HPLC
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固定化改性累托石微球对水中染料橙黄Ⅱ的吸附 被引量:8
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作者 唐玉斌 吕华 +2 位作者 陈芳艳 步源源 陆润芹 《环境科学与技术》 CAS CSCD 北大核心 2008年第11期13-17,共5页
旨在为提高累托石对染料的吸附效率,便于其在工业中的应用,采用十六烷基三甲基溴化铵(HDTMA)对天然累托石进行改性,并利用聚乙烯醇(PVA)、海藻酸钠等材料固定改性累托石粉末,制备了微球状吸附剂。考察了固定化改性累托石微球对水中橙黄... 旨在为提高累托石对染料的吸附效率,便于其在工业中的应用,采用十六烷基三甲基溴化铵(HDTMA)对天然累托石进行改性,并利用聚乙烯醇(PVA)、海藻酸钠等材料固定改性累托石粉末,制备了微球状吸附剂。考察了固定化改性累托石微球对水中橙黄Ⅱ的吸附性能以及吸附热力学和动力学规律。结果表明,等温吸附规律可用Freundlich和Langmuir模式较好地模拟。吸附活化焓ΔH0呈正值,且吸附体系的ΔH0<-TΔS0,整个吸附过程活化熵的影响大于活化焓,适当升温有利于加速吸附反应的进行。吸附动力学规律符合准一级、二级吸附速率模型、Bangham模式和Elovich模型。膜扩散过程是吸附过程的控制步骤。 展开更多
关键词 固定化 改性累托石 橙黄 吸附热力学 动力学
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光同时诱导水中Cr(Ⅵ)的还原与橙黄Ⅱ的氧化 被引量:2
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作者 丁世敏 封享华 +2 位作者 吴峰 邓南圣 Nikolai Bazhinc 《应用化学》 CAS CSCD 北大核心 2005年第8期813-817,共5页
利用照明金属卤化物灯为光源,研究了含Cr(Ⅵ)和染料橙黄Ⅱ模拟混合废水中Cr(Ⅵ)的还原和橙黄Ⅱ的氧化脱色;讨论了pH值、Cr(Ⅵ)、橙黄Ⅱ初始浓度对光反应的影响;对反应机理进行了初步探讨。实验表明,卤灯照射Cr(Ⅵ)和橙黄Ⅱ混合溶液能同... 利用照明金属卤化物灯为光源,研究了含Cr(Ⅵ)和染料橙黄Ⅱ模拟混合废水中Cr(Ⅵ)的还原和橙黄Ⅱ的氧化脱色;讨论了pH值、Cr(Ⅵ)、橙黄Ⅱ初始浓度对光反应的影响;对反应机理进行了初步探讨。实验表明,卤灯照射Cr(Ⅵ)和橙黄Ⅱ混合溶液能同时实现Cr(Ⅵ)的光还原和橙黄Ⅱ的脱色,同时提高Cr(Ⅵ)和橙黄Ⅱ的浓度更利于Cr(Ⅵ)和橙黄Ⅱ的处理;酸度越大,Cr(Ⅵ)的光还原率和橙黄Ⅱ的脱色率越大;Cr(Ⅵ)浓度越大,Cr(Ⅵ)还原率越小;反应初始速率越大,橙黄Ⅱ的脱色率越大;橙黄Ⅱ浓度越大,Cr(Ⅵ)的光还原率、橙黄Ⅱ的脱色率及反应初始速率越大。橙黄Ⅱ是影响反应速率的主要浓度因素,发生反应的首先是橙黄Ⅱ吸收光能成为活化状态,然后Cr(Ⅵ)与激发态橙黄Ⅱ发生氧化还原反应。利用可见/紫外光诱导水中高价重金属(如Cr(Ⅵ))的还原和有机污染物(如偶氮染料)的氧化,能实现对重金属和有机污染物的同时处理。 展开更多
关键词 染料 橙黄 Cr(Ⅵ) 光还原 光降解
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铁(Ⅲ)-柠檬酸盐配合物光解引发橙黄Ⅱ的脱色 被引量:12
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作者 吴峰 朱凡 +1 位作者 邓南圣 向武 《应用化学》 CAS CSCD 北大核心 2004年第6期546-550,共5页
利用苯作为捕获剂确证铁 (Ⅲ ) 柠檬酸盐配合物光解产生了羟基自由基 ,对染料橙黄Ⅱ在铁 (Ⅲ ) 柠檬酸盐配合物引发下的光化学脱色规律和机制进行了研究。结果表明 ,在 12 5W高压汞灯 (λ≥ 36 5nm)照射下 ,铁 (Ⅲ ) 柠檬酸盐配合物... 利用苯作为捕获剂确证铁 (Ⅲ ) 柠檬酸盐配合物光解产生了羟基自由基 ,对染料橙黄Ⅱ在铁 (Ⅲ ) 柠檬酸盐配合物引发下的光化学脱色规律和机制进行了研究。结果表明 ,在 12 5W高压汞灯 (λ≥ 36 5nm)照射下 ,铁 (Ⅲ ) 柠檬酸盐配合物光解产生的羟基自由基可氧化橙黄Ⅱ分子发色团使其脱色 ;8mg/L橙黄II溶液光照 1h后可脱色 6 0 %~ 70 % ;在 8~ 5 0mg/L初始质量浓度范围内 ,橙黄Ⅱ的脱色速率随初始浓度降低而升高 ,脱色过程符合表观一级反应动力学规律 ;体系 pH值在 4 0~ 6 0之间脱色效果较好 ,而在Fe(Ⅲ )绝对浓度一定的条件下 ,铁 (Ⅲ )与柠檬酸盐摩尔比小于 1时 。 展开更多
关键词 铁(Ⅲ)-柠檬酸盐配合物 橙黄 光降解 脱色
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