化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (12) : 89-92. DOI: 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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Preparation of Cu₂O/TiO₂ nanotube and photoelectric reduction of CO₂ at gas-solid interface

Zhang Hongzhong^1,2, Qian Xuhui^1,2, Wang Lan^1,2, Song Yali^1,2, Zhou Hanghang^1,2, Zhang Huan^1,2, Zhang Yifei³

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Received		Published
2019-09-24		2020-12-20
Issue Date	Revised Date
2021-01-21	2019-09-24

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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。

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.

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

Key words

anodic oxidation / Cu₂O/TiO₂ / photoelectric reduction / CO₂ / CH₄ / CO

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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

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