Cu2O/TiO2纳米管的制备及其在气-固界面光电还原CO2的研究

张宏忠, 钱旭辉, 王兰, 宋亚丽, 周航航, 张欢, 张逸飞

doi:10.19817/j.cnki.issn 1006-3536.2020.12.022

化工新型材料 >

2020 , Vol. 48 >Issue 12: 89 - 92

DOI: https://doi.org/10.19817/j.cnki.issn 1006-3536.2020.12.022

新材料与新技术

Cu₂O/TiO₂纳米管的制备及其在气-固界面光电还原CO₂的研究

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1.郑州轻工业大学材料与化学工程学院,郑州450001;
2.环境污染治理与生态修复河南省协同创新中心,郑州450001;
3.河南省冶金研究所有限责任公司,郑州450001

张宏忠(1968-),男,博士,教授,硕士研究生导师,主要从事光催化技术、膜技术和水处理技术和工业废渣等方面的研究,E-mail:zhz@zzuli.edu.cn。

收稿日期: 2019-09-24

修回日期: 2020-09-21

网络出版日期: 2021-01-21

基金资助

河南省重点研发与推广专项(192102310243);河南省创新型科技团队(CXTD2015023)

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Preparation of Cu₂O/TiO₂ nanotube and photoelectric reduction of CO₂ at gas-solid interface

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1. School of Materials and Chemical Engineering,Zhengzhou University of Light Industry,Zhengzhou 450001;
2. Collaborative Innovation Center of Environmental Pollution Control and Ecological Restoration,Zhengzhou 450001;
3. Henan Metallurgical Research Institute Co.,Ltd.,Zhengzhou 450001

Received date: 2019-09-24

Revised date: 2020-09-21

Online published: 2021-01-21

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摘要

利用阳极氧化法制备了不同阳极氧化时间的TiO₂纳米管,通过电化学方法将Cu₂O沉积到TiO₂纳米管表面。借助高分辨率场发射扫描电子显微镜(FE-SEM)、X射线衍射(XRD)和X射线光电子能谱分析(XPS)对复合催化剂Cu₂O/TiO₂进行了表征。利用自制的光电催化反应装置——“双池双界面反应器”进行复合催化剂Cu₂O/TiO₂在气-固界面光电还原CO₂的研究。结果表明:催化产物为CH₄和CO,催化产物中CH₄含量最高时,可以达到1.678μL。CO含量最高时,可以达到11.499μL。催化产物中CO含量明显高于CH₄含量,说明制备的复合催化剂Cu₂O/TiO₂-2对CO产物的生成选择性好。

关键词： 阳极氧化; 氧化亚铜/二氧化钛; 光电还原; 二氧化碳; 甲烷; 一氧化碳

本文引用格式

张宏忠, 钱旭辉, 王兰, 宋亚丽, 周航航, 张欢, 张逸飞 . Cu₂O/TiO₂纳米管的制备及其在气-固界面光电还原CO₂的研究[J]. 化工新型材料, 2020 , 48(12) : 89 -92 . DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.022

Abstract

TiO₂ nanotubes with different anodic oxidation time were prepared by anodic oxidation method,and Cu₂O was deposited on the surface of TiO₂ nanotubes by electrochemical method.The composite catalyst Cu₂O/TiO₂ was characterized by FESEM,XRD and XPS.The photoelectric reduction of CO₂ by Cu₂O/TiO₂ composite catalyst at gas-solid interface was studied by using a self-made photoelectricity catalytic reaction device-“double pool and double interface reactor”.The results showed that the catalytic products were CH₄ and CO.The highest CH₄ content in the catalytic products was 1.678μL.At its peak,CO can reach 11.499μL.The content of CO in the catalytic products was significantly higher than that of CH₄,indicating that the prepared composite catalyst Cu₂O/TiO₂-2 had good selectivity for the generation of CO products.

Key words： anodic oxidation; Cu₂O/TiO₂; photoelectric reduction; CO₂; CH₄; CO

参考文献

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