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| 1 | Ce-based catalysts used in advanced oxidation processes for organic wastewater treatment: A review显示文摘Refractory organic pollutants in water threaten human health and environmental safety,and advanced oxidation processes (AOPs) are effective for the degradation of these pollutants.Catalysts play vital role in AOPs,and Ce-based catalysts have exhibited excellent performance.Recently,the development and application of Ce-based catalysts in various AOPs have been reported.Our study conducts the first review in this rapid growing field.This paper clarifies the variety and properties of Ce-based catalysts.Their applications in different AOP systems (catalytic ozonation,photodegradation,Fenton-like reactions,sulfate radicalbased AOPs,and catalytic sonochemistry) are discussed.Different Ce-based catalysts suit different reaction systems and produce different active radicals.Finally,future research directions of Ce-based catalysts in AOP systems are suggested. | Lijun Niu Ting Wei Qiangang Li Guangming Zhang Guang Xian Zeqing Long Zhijun Ren | 2020 | Journal of Environmental Sciences2020,32,10: | 10 |
| 2 | CuO/Bi_(2)O_(3)光催化耦合过一硫酸盐氧化降解盐酸四环素显示文摘利用共沉淀-浸渍法合成了基于可见光响应的CuO/Bi_(2)O_(3)复合催化剂,并对其光催化活化过一硫酸盐(PMS)去抗生素盐酸四环素(TC-HCl)的性能进行了探究。分别运用XRD、XPS、FESEM、UV-Vis DRS等技术对催化剂进行了结构以及形貌的表征。考察了PMS浓度、催化剂投加量及pH对TC-HCl去除的影响。结果表明:CuO的掺杂有利于提高Bi_(2)O_(3)的可见光催化性能,也增强了对PMS的活化;在可见光照射100 min、催化剂的用量为0.2 g·L^(−1)、PMS的投加量为10 mmol·L^(−1)的条件下,CuO/Bi_(2)O_(3)复合催化剂对初始浓度为40 mg·L^(−1)的TCHCl的降解率可达到99.6%;SO_(4)^(-·)和·OH是催化降解TC-HCl的主要活性物种;该复合催化剂具有很好的稳定性。以上研究结果可为探索新型非均相催化剂在抗生素废水处理的应用提供参考。 | 丁丽丹 周家斌 刘文博 陈新 冯芹芹 杨玉玲 张天磊 | 2021 | 环境工程学报2021,15,3: | 10 |
| 3 | Bismuth oxide-related photocatalysts in green nanotechnology:A critical analysis显示文摘A survey addressing the uses of bismuth oxide in photocatalysis is presented.The richness of literature on such a specific topic proves the growing importance of this compound as a valid tool in pollution abatement and environmental decontamination.Many research groups have focused their activity on how to improve the photocatalytic properties of this semiconductor and several solutions have been adopted in the synthesis method,often based on wet-chemical processes.The impressive development of nanoscience helped in understanding and identifying process variables and operative conditions aiming at optimizing the yield of this promising photocatalytic material in the utilization of solar energy. | Andrea P.Reverberi P.S.Varbanov M.Vocciante B.Fabiano | 2018 | Frontiers of Chemical Science and Engineering2018,12,4: | 2 |
| 4 | Removal of elemental mercury by photocatalytic oxidation over La_(2)O_(3)/Bi_(2)O_(3)composite显示文摘La_(2)O_(3)/Bi_(2)O_(3)photocatalysts were prepared by impregnation of Bi_(2)O_(3)with an aqueous solution of lanthanum precursor followed by calcination at different temperatures.The composite materials were used for the first time for the photocatalytic removal of Hg~0 from a simulated flue gas under UV light irradiation.The results showed that the sample containing 6 wt.%La_(2)O_(3)and calcined at 500°C has the highest dispersion of the active sites,which was promoted by the strong interaction with the support(i.e.,the formation of Bi-O-La species).Since they are fully accessible on the surface,the material also exhibits excellent optical properties while the heterojunction formed in La_(2)O_(3)/Bi_(2)O_(3)promotes the separation and migration of photoelectron-hole pairs and thus Hg~0 oxidation efficiency is enhanced.The effects of the various factors(e.g.,the reaction temperature and composition of the simulated flue gas(i.e.,O_(2),NO,H_(2)O,and SO_(2)))on the efficiency of the Hg~0 photocatalytic oxidation were investigated.The results demonstrated that O_(2)and SO_(2)enhanced the efficiency of the reaction while the reaction temperature,NO,and H_(2)O had an inhibitory effect. | Renjun Li Yanan Zhou Xueqian Wang Langlang Wang Ping Ning Lei Tao Jun Cai | 2021 | Journal of Environmental Sciences2021,33,4: | 2 |
| 5 | 新型铈掺杂氧化铋复合催化材料制备及其光催化性能研究显示文摘基于静电纺丝技术将金属Ce掺杂到Bi_(2)O_(3)中,研究制备出了光催化活性增强的新型一维线性复合催化剂,并通过XRD、SEM、TEM、UV vis-DRS表征与分析,研究了不同掺杂比例对Bi_(2)O_(3)改性的影响,并将自制的光催化剂应用于液相中光降解甲基橙染料有机物.以甲基橙为目标降解物,研究结果表明,金属Ce成功地掺杂到Bi_(2)O_(3)中替换了部分Bi的晶格位,其中掺杂比例为0.25时获得了最佳的可见光催化活性,其吸收边红移最大,增禁带宽度为2.22eV,可见光照射下90min对MO催化降解率达到98.81%,光降解过程符合一级动学过程,光催化剂可见光催化降解有机污染物性能优良.研究结果为新型铈掺杂氧化铋复合催化材料在光催化领域内处理难生物降解污染物提供理论依据和技术支持. | 包海峰 欧阳文璟 严雨阳 郑雨莹 | 2021 | 吉林化工学院学报2021,38,11: | 1 |
| 6 | Photocatalysis: Preface显示文摘A recent search of the keyword'Photocatalysis'in the CAS Sci Finder?database shows that at least 5,000 articles on this topic have been published each year from 2014 to2016.It is expected that even more articles on this topic will be published in the foreseeable future.These data indicate the importance of'Photocatalysis'in the field.The | Po Keung Wong | 2017 | Journal of Environmental Sciences2017,29,10: | 1 |
| 7 | 氧化铋改性的研究进展显示文摘Bi_2O_3具有无毒、廉价、在可见光下响应的特性,具有良好的应用前景,主要有α-Bi_2O_3、β-Bi_2O_3、γ-Bi_2O_3和δ-Bi_2O_3四种晶型。近年来,国内外对Bi_2O_3的制备和改性进行了广泛的研究,通过减小带隙、降低光生电子-空穴复合率、增大比表面积等方式,有效提高了Bi_2O_3的光催化性能。本文对Bi_2O_3的结构和性质进行了简单分析,对不同改性方法提高Bi_2O_3催化活性的机理进行了概述,并提出了存在的主要问题。 | 杨雪珍 王卫芳 | 2018 | 广东化工2018,45,11: | 1 |