TiO2 纳米管限域Co3O4 催化剂的光解水制氢性能

doi:10.3969/j.issn.1000-565X.2016.11.003

华南理工大学学报（自然科学版） ›› 2016, Vol. 44 ›› Issue (11): 12-18.doi: 10.3969/j.issn.1000-565X.2016.11.003

TiO₂纳米管限域Co₃O₄ 催化剂的光解水制氢性能

李新军^1,2,3 张家峰^1,2,3,4杨旭^1,2,3 廖世军⁵

1．中国科学院广州能源研究所，广东广州 510640; 2．中国科学院可再生能源重点实验室，广东广州 510640; 3．广东省新能源和可再生能源研究开发与应用重点实验室，广东广州 510640; 4．中国科学院大学，北京 100049; 5．华南理工大学化学与化工学院，广东广州 510640

收稿日期:2016-04-25 修回日期:2016-05-31 出版日期:2016-11-25 发布日期:2016-10-04
通信作者: 李新军( 1967-) ，男，博士，研究员，博士生导师，主要从事环境能源材料研究． E-mail:lixj@ms.giec.ac.cn
作者简介:李新军( 1967-) ，男，博士，研究员，博士生导师，主要从事环境能源材料研究．
基金资助:
国家自然科学基金青年科学基金资助项目( 21303210)

Hydrogen Production of Photo-Catalytic Water Splitting by Using Co₃O₄ Encapsulated Within TiO₂ Nanotubes

LI Xin-jun^1,2,3 ZHANG Jia-feng^1,2,3,4 YANG Xu^1,2,3 LIAO Shi-jun⁵

1.Guangzhou Institute of Energy Conversion,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China; 2.Key Laboratory of Renewable Energy,Chinese Academy of Sciences,Guangzhou 510640,Guangdong,China; 3.Guangdong Provincial Key Laboratory of New and Renewable Energy Research and Development,Guangzhou 510640,Guangdong,China; 4.University of Chinese Academy of Sciences,Beijing 100049,China; 5.School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China

Received:2016-04-25 Revised:2016-05-31 Online:2016-11-25 Published:2016-10-04
Contact: 李新军( 1967-) ，男，博士，研究员，博士生导师，主要从事环境能源材料研究． E-mail:lixj@ms.giec.ac.cn
About author:李新军( 1967-) ，男，博士，研究员，博士生导师，主要从事环境能源材料研究．
Supported by:
Supported by the National Natural Science Foundation for Young Scholars( 21303210)

摘要/Abstract

摘要： 采用真空辅助浸渍法，将硝酸钴浸入TiO₂纳米管内，再经400℃焙烧得到Co₃O₄纳米粒子内嵌于TiO₂纳米管的光催化剂．通过X 射线衍射、透射电子显微镜、X 射线光电子能谱、紫外－可见光谱等测试手段对材料进行表征，并在可见光照射下，通过光解水制氢评估材料的催化性能．实验结果显示，高度分散的Co₃O₄内嵌于TiO₂纳米管内，粒径为3 ～ 5 nm．与Co₃O₄负载于TiO₂纳米管外的催化剂相比，管内的Co₃O₄与TiO₂纳米管之间的相互作用增大，其可见光吸收明显增强，可见光分解水制氢性能显著提高．

关键词: 二氧化钛纳米管, 限域效应, 光解水制氢, 四氧化三钴

Abstract:

By means of vacuum-assisted impregnation,cobalt nitrate was dipped into TiO₂ nanotubes and then calcinated at 400℃.Thus,the photo-catalyst of Co₃O₄ nanoparticles embedded in TiO₂ nanotubes ( TNT) was obtained.The material was characterized by means of XRD,TEM,XPS and UV-Vis spectroscopy,and through the hydrogen production of photo-catalytic water splitting,the photo-catalytic activity of the material was evaluated under a visible-light irradiation.Experimental results show that ( 1) highly-dispersed Co₃O₄ is embedded within TNT,and its size is 3 ～ 5 nm; ( 2) as compared with the Co₃O₄catalyst supported on the exterior surface of TNT,the Co₃O₄ catalyst confined within TNT shows an enhanced interaction with TNT; and ( 3) the Co₃O₄ catalyst confined within TNT also shows an enhanced visible light absorption,and it increases the hydrogen production of water splitting under the visible light illumination significantly.

Key words: titanium dioxide nanotube, confinement effect, hydrogen production of photo-catalytic water splitting, cobaltosic oxide

中图分类号:

O643.32

李新军张家峰杨旭廖世军. TiO₂纳米管限域Co₃O₄ 催化剂的光解水制氢性能[J]. 华南理工大学学报（自然科学版）, 2016, 44(11): 12-18.

LI Xin-jun ZHANG Jia-feng YANG Xu LIAO Shi-jun. Hydrogen Production of Photo-Catalytic Water Splitting by Using Co₃O₄ Encapsulated Within TiO₂ Nanotubes[J]. Journal of South China University of Technology (Natural Science Edition), 2016, 44(11): 12-18.

TiO₂纳米管限域Co₃O₄ 催化剂的光解水制氢性能

Hydrogen Production of Photo-Catalytic Water Splitting by Using Co₃O₄ Encapsulated Within TiO₂ Nanotubes

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