Enhanced photoelectrocatalytic degradation of organic pollutants using TiO2 nanotubes implanted with nitrogen ions
Enhanced photoelectrocatalytic degradation of organic pollutants using TiO2 nanotubes implanted with nitrogen ions
复制标题
注入氮离子的TiO2纳米管增强光电催化降解有机污染物
DOI：
10.1007/s10853-020-04461-5
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发表时间：
2020
影响因子：
4.5
通讯作者：
Zhang Ruijing
中科院分区：
文献类型：
--
作者：
Hou Xinggang;Liu Xiaoli;Han Jing;Liu Huanli;Yao Jianghong;Li Dejun;Wang Liqun;Liao Bin;Li Jing;Zhang Ruijing
采用离子注入法和电化学阳极氧化法制备了氮离子注入TiO2纳米管。将制备的样品用于光电催化氧化甲基蓝、罗丹明B和双酚A。与纯TNT相比，离子注入使掺杂样品的形貌、结晶度、化学结构、光电性能和光电转换性能得到了很大的改善。实验结果表明，氮的引入改变了TiO2的电子结构，使其带隙中出现杂质态，从而导致可见光的吸收。管状结构、掺杂氮离子和偏置电位对电路的协同作用是导致可见光和紫外光诱导的高效和稳定的PEC活性的原因。利用离子注入法制备的掺杂TNT可应用于PEC水裂解、染料敏化太阳能电池等领域。
Nitrogen ions-implanted TiO2 nanotubes (TNTs) were prepared by the methods of ion implantation and electrochemical anodic oxidation. The prepared samples were applied in photoelectrocatalytic (PEC) oxidation of methyl blue, rhodamine B and bisphenol A. Compared with pure TNTs, morphology, crystallinity, chemical structure, photoelectric and PEC ability of doped samples were greatly promoted because of ion implantation. The experimental results propose that the electronic structure of TiO2 was modified because of the emergence of impurity states in the band gap by introducing nitrogen into the lattice, leading to the absorption of visible light. The synergy effects of tubular structures, doped nitrogen ions and the bias potential on the circuit are responsible for highly efficient and stable PEC activities induced by visible light and UV light. The doped TNTs prepared using the method of ion implantation could be applied to various areas, such as PEC water splitting and dye sensitized solar cells.