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纳米二氧化钛复合纤维织物的抗光降解及耐久抗菌研究进展 被引量:3
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作者 王鲁燕 孙彦平 《材料导报》 EI CAS CSCD 北大核心 2006年第9期16-20,共5页
纳米二氧化钛是一种性能优异的光催化型抗菌除臭剂,但在高分子纤维织物方面的应用尚属研究阶段,主要涉及两个关键问题:避免纳米Ti O2对所附着的纤维织物高分子基体光降解损伤;寻找纳米Ti O2与纤维织物表面的耐久性锚固方式。以纤维织物... 纳米二氧化钛是一种性能优异的光催化型抗菌除臭剂,但在高分子纤维织物方面的应用尚属研究阶段,主要涉及两个关键问题:避免纳米Ti O2对所附着的纤维织物高分子基体光降解损伤;寻找纳米Ti O2与纤维织物表面的耐久性锚固方式。以纤维织物为重点,分析近年来国内外在这两方面的研究进展,指出设置中间抗氧化层及其表面抗菌性接枝改性是目前解决上述问题的两种有效方法,二者的有机结合将促进纳米Ti O2在纤维织物领域的应用。 展开更多
关键词 纳米二氧化钛 抗光降解 表面接枝 织物 纤维
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新型O_2指示剂用于气调包装的研究 被引量:2
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作者 吴增强 陈国松 +3 位作者 陆薇薇 张友娟 张红漫 张之翼 《食品研究与开发》 CAS 北大核心 2007年第5期20-22,共3页
利用皂石的反射紫外线作用,在表面活性剂的作用下将亚甲蓝、抗坏血酸引入皂石的层间结构中,从而制成一种新型的氧气指示剂并解决了亚甲蓝易于被光降解的问题,克服了其它变色型氧气指示剂需要避光保存的问题。该氧气指示剂在氧气含量小于... 利用皂石的反射紫外线作用,在表面活性剂的作用下将亚甲蓝、抗坏血酸引入皂石的层间结构中,从而制成一种新型的氧气指示剂并解决了亚甲蓝易于被光降解的问题,克服了其它变色型氧气指示剂需要避光保存的问题。该氧气指示剂在氧气含量小于0.1%时为红色,当氧气含量上升到0.5%时迅速变为蓝色,具有较灵敏的检测氧气的功能。并且探讨了表面活性剂在氧气指示剂中的作用。 展开更多
关键词 气调包装 氧气指示剂 抗光降解 亚甲蓝 皂石 表面活性剂
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Recent developments in visible-light photocatalytic degradation of antibiotics 被引量:39
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作者 李娣 施伟东 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2016年第6期792-799,共8页
With the significant discharge of antibiotic wastewater into the aquatic and terrestrial ecosystems, antibiotic pollution has become a serious problem and presents a hazardous risk to the environment. To address such ... With the significant discharge of antibiotic wastewater into the aquatic and terrestrial ecosystems, antibiotic pollution has become a serious problem and presents a hazardous risk to the environment. To address such issues, various investigations on the removal of antibiotics have been undertaken. Photocatalysis has received tremendous attention owing to its great potential in removing antibiotics from aqueous solutions via a green, economic, and effective process. However, such a technology employing traditional photocatalysts suffers from major drawbacks such as light absorption being restricted to the UV spectrum only and fast charge recombination. To overcome these issues, considerable effort has been directed towards the development of advanced visible light-driven photocatalysts. This mini review summarises recent research progress in the state-of-the-art design and fabrication of photocatalysts with visible-light response for photocatalytic degradation of antibiotic wastewater. Such design strategies involve the doping of metal and non-metal into ultraviolet light-driven photocatalysts, development of new semiconductor photocatalysts, construction of heterojunction photocatalysts, and fabrication of surface plasmon resonance-enhanced photocatalytic systems. Additionally, some perspectives on the challenges and future developments in the area of photocatalytic degradation of antibiotics are provided. 展开更多
关键词 Antibiotic Visible-light photocatalyst Photocatalytic degradation DOPING HETEROJUNCTION Surface plasmon resonance-enhanced photocatalysis
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A review on photocatalysis in antibiotic wastewater:Pollutant degradation and hydrogen production 被引量:33
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作者 Zhidong Wei Junying Liu Wenfeng Shangguan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第10期1440-1450,共11页
Surveys on antibiotics have become one of the most popular topics in the recent two decades. From 1998 to 2018, more than 5,000 articles concentrated on the research of antibiotic wastewater treatment have been publis... Surveys on antibiotics have become one of the most popular topics in the recent two decades. From 1998 to 2018, more than 5,000 articles concentrated on the research of antibiotic wastewater treatment have been published. Among them, photocatalysis has received much attention due to its green and environmental-friendly properties. In this mini-review, the recent progress of photocatalysis in antibiotic wastewater was summarized, including antibiotics degradation and hydrogen energy conversion. The photocatalysts commonly used were also discussed. It can be mainly classified as TiO2-based materials, sulfides and polymeric carbon nitride-based materials and bismuth-contained materials. Four major types of antibiotics, tetracycline, sulfonamide, β-lactam and quinolone, were involved. Furthermore, perspectives concentrated on future development and challenges, especially converting antibiotics into hydrogen energy, were also proposed. 展开更多
关键词 PHOTOCATALYTIC ANTIBIOTICS DEGRADATION Hydrogen Energy THERMODYNAMIC
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单宁酸包裹的阿维菌素/介孔SiO_(2)纳米载药系统的构建与性能
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作者 徐鹏 戴伟 +7 位作者 曹蓉 石伟山 邢刚 王钊贵 王莎莎 李群 游朝群 郝德君 《复合材料学报》 EI CAS CSCD 北大核心 2024年第3期1470-1479,共10页
增加农药在靶标作物叶面的滞留时间对提高农药利用率和降低农药对环境的影响具有重要意义。本文以阿维菌素(Aba)为模型药物,以单宁酸(TA)包裹的介孔SiO_(2)纳米颗粒为载体材料构建纳米农药载药系统,在对纳米农药载药系统结构和形貌进行... 增加农药在靶标作物叶面的滞留时间对提高农药利用率和降低农药对环境的影响具有重要意义。本文以阿维菌素(Aba)为模型药物,以单宁酸(TA)包裹的介孔SiO_(2)纳米颗粒为载体材料构建纳米农药载药系统,在对纳米农药载药系统结构和形貌进行表征的基础上,通过模拟释放实验、植物叶面接触角和滞留量的比较及抗紫外光解实验深入研究纳米载药系统的释放性能和叶面粘附性能。研究发现,单宁酸包覆的阿维菌素/介孔SiO_(2)纳米载药系统(Aba/MSNs@TA)的载药量达到23.50%,单宁酸的包覆明显提高了载药系统在绿萝、玉米和马尾松叶面上的润湿性,叶面滞留量相较于Aba/MSNs提高了23.4%。Aba/MSNs@TA表现出明显的pH响应性释放性能,较低的pH值环境加速了Aba的释放速度。此外,单宁酸的包覆进一步提高了载药系统中药物的抗紫外光解性能。 展开更多
关键词 阿维菌素 粘附性 介孔SiO_(2) 刺激响应 抗光降解 单宁酸 农药载药系统
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Simultaneous visible-light-induced hydrogen production enhancement and antibiotic wastewater degradation using MoS2@ZnxCd1-xS: Solid-solution-assisted photocatalysis 被引量:8
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作者 Zhidong Wei Meiqi Xu +3 位作者 Junying Liu Weiqi Guo Zhi Jiang Wenfeng Shangguan 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 北大核心 2020年第1期103-113,共11页
In this study,a ZnxCd1-xS solid solution was successfully synthesized using a hydrothermal method.MoS2 serving as a co-catalyst for hydrogen evolution was also prepared through a one-pot hydrothermal method.The struct... In this study,a ZnxCd1-xS solid solution was successfully synthesized using a hydrothermal method.MoS2 serving as a co-catalyst for hydrogen evolution was also prepared through a one-pot hydrothermal method.The structures,morphology,chemical states,and optical properties were characterized using powder X-ray diffraction,scanning electron microscopy,high-angle annular dark field-scanning transmission electron microscopy,elemental mapping,X-ray photoelectron spectroscopy,and UV-Vis diffuse reflection spectroscopy.Visible-light-driven photocatalytic experiments were conducted to simultaneously achieve hydrogen production and amoxicillin antibiotic wastewater degradation.The results indicated 8%MoS2/ZnxCd1-xS achieves the best photocatalytic performance.The ZnxCd1-xS samples illustrated a superior performance to that of CdS,which can be attributed to a thermodynamic improvement.Based on the results of PL and TRPL analyses,the enhancement of the hydrogen production mechanisms can be ascribed to the prolonged separation process of the photocarriers.Furthermore,the degradation results were analyzed using the HPLC method and the possible degradation pathways were determined through the HPLC-MS techniques. 展开更多
关键词 PHOTOCATALYTIC Hydrogen energy Antibiotic wastewater DEGRADATION SIMULTANEOUS
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Self-assembly synthesis of S-scheme g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) for photocatalytic degradation of norfloxacin and bisphenol A 被引量:3
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作者 Xiaomeng Gu Taijie Chen +7 位作者 Jian Lei Yang Yang Xiuzhen Zheng Sujuan Zhang Qiushi Zhu Xianliang Fu Sugang Meng Shifu Chen 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2022年第10期2569-2580,共12页
To realize the high-efficiency photodegradation of antibiotics,a novel S-scheme heterojunction photocatalyst g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) was proposed and successfully prepared in this work.The 10%g-C_(3)N_(4)/B... To realize the high-efficiency photodegradation of antibiotics,a novel S-scheme heterojunction photocatalyst g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) was proposed and successfully prepared in this work.The 10%g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) heterojunction exhibits the highest degradation rate of norfloxacin(NOR)and bisphenol A(BPA).The degradation rate of NOR on 10%g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) is about 1.38 and 2.33 times higher than that of pure Bi_(8)(CrO_(4))O_(11) and g-C_(3)N_(4),respectively.Further,the degradation rate of BPA over 10%g-C_(3)N_(4)/Bi_(8)(CrO_(4))O_(11) heterojunction is bout 1.35 and 9.11 times higher than that of pure Bi_(8)(CrO_(4))O_(11) and g-C_(3)N_(4),respectively.The formation of S-scheme heterojunction facilitates the separation of photogenerated electron-hole pairs and reduces the recombination of charge carriers,which was confirmed by photocurrent,electrochemical impedance spectroscopy,steady-state and time-resolved transient photoluminescence spectrum,etc.The in-situ X-ray photoelectron spectroscopy,radical trapping experiments and electron paramagnetic resonance results demonstrate that the charge transfer is in accord with S-scheme mechanism. 展开更多
关键词 Bi_(8)(CrO_(4))O_(11) g-C_(3)N_(4) S-Scheme Photocatalytic degradation Antibiotics
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Photochemical Degradation of the Ciprofloxacin Antibiotic and Its Microbiological Validation
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作者 Fernando Hernaindez Antonio Rivera +2 位作者 Angeles Ojeda Teresa Zayas Lilia Cedillo 《Journal of Environmental Science and Engineering(A)》 2012年第4期448-453,共6页
In this research, it used advanced oxidation processes for the recovery, detoxification and mineralization of wastewater mainly contaminated by antibiotics (ciprofloxacin). These processes can be used alone or in co... In this research, it used advanced oxidation processes for the recovery, detoxification and mineralization of wastewater mainly contaminated by antibiotics (ciprofloxacin). These processes can be used alone or in combination with each other or by complementing traditional methods, even allowing the disinfection of bacterial and viral inactivation. With the use of experimental systems UV/H202/O3, UV/H202, it can achieve total mineralization of the compound. Ciprofloxacin solutions used at 50, 100, 200, 300, 400 and 500 ppm, degraded to 100% of antibiotics and by a microbiological method show that the loss of biological activity is inversely proportional to the time of irradiation. 展开更多
关键词 Emerging contaminants advanced oxidation processes antibiotics photodegradation.
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专利信息
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《广东塑料》 2004年第10期32-33,共2页
关键词 降解塑料 母料 改性聚丙烯 密封树脂 密封膜 光降解菌聚烯烃塑料 粉末氟橡胶 制备 增塑剂 聚乳酸 开瓶器手柄材料 塑料透镜 淀粉 水泥塑料 非淀粉生物降解塑料 涂布塑料模 可紫外光固化底漆 添加剂
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专利技术
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《塑料挤出》 2004年第4期54-56,共3页
关键词 聚苯乙烯系树脂 泡沫板 驱动式挤出机 改性聚丙烯母粒 制备 聚乙烯硅烷交联法 光降解菌聚烯烃塑料 空心线料泡沫 复合材料 汽车管路 双螺杆塑料挤出机 双平壁螺旋中空结构壁管 .塑料管 热塑性弹体 连续挤出成型
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