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Fe-Ni-TiO2/AC 粒子电极的制备及可见光光电催化协同降解RhB

China Environmental Science(2014)

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Abstract
制备Fe-Ni-TiO2/AC粒子电极,应用于可见光助三维电极/电Fenton(Vis-3D/EF)光电催化体系中,以RhB为目标污染物,研究了可见光光电催化对 RhB 的协同降解.实验优化了 Fe-Ni-TiO2/AC 粒子电极的制备条件,并与活性炭粒子电极、活性炭负载 TiO2粒子电极在Vis-3D/EF体系中的光电催化性能进行对比,结果表明:TiO2浸渍液浓度为2g/L,Fe-Ni掺杂比为5:5,Fe:Ni:TiO2物质的量比为0.5:0.5:100的条件下制备的粒子电极在Vis-3D/EF体系中表现出最优的光电催化性能,60min对RhB的去除率达92.58%,优于活性炭粒子电极和活性炭负载 TiO2粒子电极.自制粒子电极在 Vis-3D/EF 体系比在3D/EF 体系对 RhB 的去除率提高29.46%,表现出明显的光催化和三维电极/电Fenton协同处理效果,协同指数为1.18,说明了自制粒子电极应用在Vis-3D/EF组合技术中,实现对RhB的可见光光电协同降解是可行的.
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Key words
photoelectrocatalytic,visible irradiation,three-dimensional electro-Fenton,particle electrodes
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