Electrochemical fabrication of NZVI/TiO2 nano-tube arrays photoelectrode and its enhanced visible light photocatalytic performance and mechanism for degradation of 4-chlorphenol
Electrochemical fabrication of NZVI/TiO2 nano-tube arrays photoelectrode and its enhanced visible light photocatalytic performance and mechanism for degradation of 4-chlorphenol
复制标题
NZVI/TiO2纳米管阵列光电极的电化学制备及其增强可见光光催化性能和降解4-氯苯酚的机制
DOI：
10.1016/j.seppur.2017.03.047
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发表时间：
2017-07
影响因子：
8.6
通讯作者：
Li Bo
中科院分区：
文献类型：
--
作者：
Ma Qiuling;Zhang Huixuan;Deng Xiaoyong;Cui Yuqi;Cheng Xiuwen;Li Xiaoli;Xie Mingzheng;Cheng Qingfeng;Li Bo
采用阳极氧化-恒电流电沉积的方法制备了纳米零价铁（NZVI）修饰的TiO 2纳米管阵列（NZVI/TiO 2 NTAs）光电极。采用SEM、XRD、XPS、UV-vis DRS和光电化学（PECH）等测试手段对NZVI/TiO 2 NTAs样品的物化性能进行了系统的研究。结果表明，NZVI/TiO 2 NTAs光电极具有明显的可见光吸收和高的光生电荷分离效率。然而，NVZI颗粒在光催化（PC）反应后转化为α-Fe 2 O3物种，这将进一步提高可见光吸收率和PC效率，这通过进一步增强可见光PC分解4-氯苯酚（4-CP）和产生自由基dotOH自由基的性能得到证实。并对NZVI/TiO_2NTA光电极的可见光增强机理进行了详细的讨论。本研究为制备高效催化剂用于高毒性、难降解的水体微污染物的去除提供了一种可行的方法。
In this study, nano-scale zero-valent iron (NZVI) decorated TiO2nano-tube arrays (NZVI/TiO2NTAs) photoelectrode was fabricated through anodization process, followed by galvanostatic electrodeposition strategy. Afterwards, physicochemical properties of the resulting NZVI/TiO2NTAs samples were systematically studied by SEM, XRD, XPS, UV–vis DRS and photoelectrochemical (PECH) measurements. Results indicated that NZVI/TiO2NTAs photoelectrode exhibited greatly enhanced visible light absorbance and high photogenerated charge separation efficiency. However, after photocatalytic (PC) reaction, NVZI particles were converted to α-Fe2O3species, which would further improve the visible light absorbance and PC efficiency, which was confirmed by the further enhanced visible light PC performance for decomposition of 4-chlorphenol (4-CP) and generation of radical dotOH radicals. Furthermore, the enhanced visible light mechanism of NZVI/TiO2NTAs photoelectrode was detailed discussed. This study provides a versatile strategy to fabricate high-efficient catalysts which could be used in the high-toxic and refractory micro-pollutants elimination in water body.
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影响因子：
12.8
作者：
Jialing Zhang;B. Zhou;Q. Zheng;Jinhua Li;Jing Bai;Yanbiao Liu;W. Cai
通讯作者：
Jialing Zhang;B. Zhou;Q. Zheng;Jinhua Li;Jing Bai;Yanbiao Liu;W. Cai
影响因子：
9.8
作者：
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通讯作者：
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影响因子：
3.1
作者：
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通讯作者：
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影响因子：
4.6
作者：
Barkul, R. P.;Koli, V. B.;Delekar, S. D.
通讯作者：
Delekar, S. D.
影响因子：
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作者：
Yanyan Song;Poulomi Roy;I. Paramasivam;P. Schmuki
通讯作者：
Yanyan Song;Poulomi Roy;I. Paramasivam;P. Schmuki