钴掺杂<strong>TiO<sub>2</sub></strong>纳米管阵列薄膜的制备及其光催化还原性能

doi:10.11901/1005.3093.2019.373

材料研究学报

2020, Vol. 34

Issue (3): 176-182 DOI: 10.11901/1005.3093.2019.373

研究论文

本期目录 | 过刊浏览

钴掺杂TiO₂纳米管阵列薄膜的制备及其光催化还原性能

王世琦¹,霍文燚¹,徐正超²,张旭海¹,周雪峰¹,方峰¹(

)

1. 东南大学材料科学与工程学院南京 211189
2. 张家港格林台科环保设备有限公司苏州 215625

Fabrication of Films of Co Doped TiO₂Nanotube Array and their Photocatalytic Reduction Performance

WANG Shiqi¹,HUO Wenyi¹,XU Zhengchao²,ZHANG Xuhai¹,ZHOU Xuefeng¹,FANG Feng¹(

)

1. School of Materials Science and Engineering, Southeast University, Nanjing 211189, China
2. Zhangjiagang Green Tech Environmental Protection Equipment Co. , LTD. , Suzhou 215625, China

引用本文:

王世琦,霍文燚,徐正超,张旭海,周雪峰,方峰. 钴掺杂TiO₂纳米管阵列薄膜的制备及其光催化还原性能[J]. 材料研究学报, 2020, 34(3): 176-182.
Shiqi WANG, Wenyi HUO, Zhengchao XU, Xuhai ZHANG, Xuefeng ZHOU, Feng FANG. Fabrication of Films of Co Doped TiO₂Nanotube Array and their Photocatalytic Reduction Performance[J]. Chinese Journal of Materials Research, 2020, 34(3): 176-182.

全文: PDF(3233 KB) HTML

摘要:

用磁控溅射法在ITO玻璃基底上制备Ti-Co合金薄膜，对其阳极氧化处理制备出钴掺杂TiO₂纳米管阵列薄膜，研究了钴掺杂对纳米管阵列薄膜的形貌、结构、吸收光谱以及光催化还原性能的影响。结果表明：钴掺杂TiO₂纳米管阵列薄膜为锐钛矿相，管状阵列的管径均一、排列规整。钴掺杂使薄膜形成(001)择优取向。随着钴掺杂量的提高，薄膜吸收可见光的能力提高。钴含量(原子分数)为0.19%的薄膜光催化性能最优，可见光照150 min后对Cr(VI)的还原率可达98.4%。

关键词 ：无机非金属材料, 磁控溅射, 阳极氧化, 光催化还原, 二氧化钛, 薄膜

Abstract：

Films of Ti-Co alloy were firstly prepared on ITO glass by magnetron sputtering and then were anodized in electrolyte of ethylene glycol + DI water + NH₄F to produce films of the Co-doped TiO₂ nanotube arrays. The effect of Co doping on the morphology, microstructure, optical and photocatalytic reduction performance under visible light was assessed for the acquired films. The results show that the films of Co-doped TiO₂nanotube arrays are composed of anatase, the same as the plain TiO₂, while the preferred orientation changed to (001) from (101) of the plain TiO₂. The incorporation of Co improved the absorption of visible light and promoted the separation of photo-generated electro-hole pairs simultaneously. Compared to the film of plain TiO₂, the ones of Co-doped TiO₂ nanotube arrays exhibit better photocatalytic reduction performance. The film with 0.19%Co (atomic fraction) shows the best photocatalytic reduction efficiency, it is 98.4% after visible light irradiation for 150 min.

Key words： inorganic non-metallic materials magnetron sputtering anodizing photocatalytic reduction titanium dioxide thin films

收稿日期: 2019-07-29

ZTFLH:

TB43

基金资助:江苏省333工程资助项目(BRA2018045);江苏省自然科学基金(BK20180264)

作者简介: 王世琦，男，1995年生，硕士生

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https://www.cjmr.org/CN/10.11901/1005.3093.2019.373 或 https://www.cjmr.org/CN/Y2020/V34/I3/176

表1 Ti-Co合金薄膜的制备工艺参数

图1 不同钴掺杂量薄膜样品的表面形貌

图2 不同钴掺杂量薄膜样品的XRD图谱

表2 不同钴掺杂量薄膜样品的成分和结构参数

图3 不同钴掺杂量薄膜样品的拉曼光谱和100~200 cm-1的Eg特征拉曼峰图谱

图4 不同钴含量薄膜的紫外-可见光吸收光谱以及 Co0-TNOT薄膜和Co4-TNOT薄膜的Tauc Plots图谱

图5 不同钴掺杂量薄膜的PL光谱

图6 不同钴含量薄膜的可见光还原Cr(VI)剩余百分数与时间的关系

图7 Co2-TNOT 薄膜的Co 2p X射线光电子能谱图

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