摘要
采用层层自组装方法在Ni片阳极上构建TiO2/Zn O纳米棒阵列,以二氧化钛前驱体溶胶中掺杂的铁和镍为催化剂,通过气相沉积法在TiO2/Zn O纳米棒阵列间原位生长碳纳米管(CNTs),得到CNT/Fe-Ni/TiO2/Zn O复合光催化剂修饰的光活性Ni片阳极.以碱性电解池为基础,用紫外线辐照修饰的Ni阳极实现光催化和电解水的有机耦合制氢过程.通过场发射扫描电子显微镜(FESEM)、透射电子显微镜(TEM)、拉曼光谱(Raman)和电化学阻抗谱(EIS)对CNT/Fe-Ni/TiO2/Zn O复合膜光催化剂的结构进行了表征,并测试了其光催化辅助电解水制氢(WEAP)活性.结果表明,生长了碳纳米管的光催化复合膜CNT/Fe-Ni/TiO2/Zn O修饰的Ni阳极的产氢速率分别比Fe-Ni/TiO2/Zn O修饰的Ni阳极和纯Ni片提高了93.7%和533.0%.
TiO2/ ZnO nanorode arrays（TiO2/ ZnO NRs） were fabricated on Ni substrate anodes by layer by layer（LBL） method.Fe and Ni doped in the TiO2 precursor were used as the catalyst to grow carbon nanotubes（CNTs） on TiO2/ ZnO surface by in situ chemical vapor deposition method.The photo-active Ni anode modified by composite photcatalyst of CNT / Fe-Ni / TiO2/ ZnO was obtained.Field emission scanning electron microscopy（FESEM）,transmission electron microscopy（TEM）,Raman spectroscopy,electrochemical impedance spectroscopy（EIS） were used to characterized the structure and properties of the modified anodes.The photocatalytic performance of the modified photoactive anode on the decomposition of water for hydrogen evolution was investigated under the irradiation of ultraviolet light.The results showed that the rate of hydrogen evolution on the photoactive anode modified by CNT / Fe-Ni / TiO2/ ZnO increased by 93.7% and 533.0%compared to those on the anodes modified by Fe-Ni / TiO2/ ZnO NRs and sole Ni,respectively.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2015年第5期971-975,共5页
Chemical Journal of Chinese Universities
基金
中央高校基本科研业务费专项资金(批准号:WD1313009)
上海市科委基础重大项目(批准号:14JC1490900)资助~~
关键词
二氧化钛
碳纳米管
光催化
制氢
Titanium dioxide
Carbon nanotube
Photocatalysis
Hydrogen evolution
作者简介
联系人简介：陈爱平，男，博士，教授，博士生导师，主要从事纳米催化剂设计与制备、纳米颗粒分散体系性质等研究E-mail：apchen@ecust．edu．cn
