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铋基材料光催化还原水中六价铬的研究进展
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作者 孙阳 Jan E.Szulejko +2 位作者 Ki-Hyun Kim vanish kumar 李小伟 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2023年第12期20-43,共24页
光催化还原是处理水溶液体系中六价铬(Cr(VI))的一种新方法.层状铋(Bi)基材料具有增强的光捕获能力和可调的带隙能量,被认为是一种光催化还原去除Cr(VI)的有效材料.本文从修饰策略(如异质结、缺陷工程和掺杂)和工艺变量(如溶液p H和添... 光催化还原是处理水溶液体系中六价铬(Cr(VI))的一种新方法.层状铋(Bi)基材料具有增强的光捕获能力和可调的带隙能量,被认为是一种光催化还原去除Cr(VI)的有效材料.本文从修饰策略(如异质结、缺陷工程和掺杂)和工艺变量(如溶液p H和添加剂的类型/数量)等方面,对用于光催化还原处理Cr(VI)的铋基材料的改进机制进行深入总结.此外,采用工业上用作关键指标的优值系数(FoM),对各种铋基材料的性能进行评估.结果发现,平均粒径为5-10 nm,具有shuriken形状的BiVO_(4)具有最高的FoM值(3.45×10^(-5) molg^(-1)Wh^(-1)),且其光催化还原性能最好.同时,与其他非铋基催化剂相比,BiVO_(4)的光催化还原Cr(VI)性能也具有很好的优势.但是,目前铋基催化剂成本较高,且光催化还原过程能耗较大,距离大规模实际应用还有一定的距离.未来,为实现铋基催化剂光催化还原处理含Cr(VI)废水的大规模应用,应大幅度降低催化剂的生产成本,并提高催化剂光子吸收效率从而进一步提高能源利用率. 展开更多
关键词 光催化 半导体 优值系数
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Nanomaterials for the abatement of cadmium (Ⅱ) ions from water/ wastewater 被引量:6
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作者 kumar Vikrant vanish kumar +1 位作者 Kowsalya Vellingiri Ki-Hyun Kim 《Nano Research》 SCIE EI CAS CSCD 2019年第7期1489-1507,共19页
The rapid rise of modern industry is the source of unchecked effluents containing many pernicious heavy metals (e.g.,cadmium).To rehabilitate the ecology,food resources,and health of humans and animals,various convent... The rapid rise of modern industry is the source of unchecked effluents containing many pernicious heavy metals (e.g.,cadmium).To rehabilitate the ecology,food resources,and health of humans and animals,various conventional methodologies are being used in wastewater treatment facilities for the abatement of cadmium.Nonetheless,the development of advanced,economical,and efficient adsorbents is needed because of the many shortcomings of conventional methods (e.g.,high cost,intensive operation,and inefficiency).Recent advancements in materials science and chemistry have introduced the use of nanomaterials,which possess very high specific surface areas and multiple functionalities,for the removal of specific targets such as cadmium.This review explores the recent developments and trends in nanomaterial adsorption technology for the mitigation of cadmium.The paper further surveys the present obstacles and future opportunities for the advancement of nanomaterial-based technologies in the area of water treatment. 展开更多
关键词 NANOMATERIALS CADMIUM adsorption pollution control WATER PURIFICATION heavy metal
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