High-efficiency synergistic conversion of CO2 to methanol using Fe2O3 nanotubes modified with double-layer Cu2O spheres

被引：65
|
作者：
Li, Peiqiang [1 ]
Jing, Hua [1 ]
Xu, Jinfeng [1 ]
Wu, Chenxiao [1 ]
Peng, Hui [1 ]
Lu, Jing [1 ]
Lu, Fusui [1 ]
机构：
[1] Shandong Agr Univ, Dept Chem, Tai An 271018, Shandong, Peoples R China
来源：
NANOSCALE | 2014年 / 6卷 / 19期
基金：
中国国家自然科学基金;
关键词：
ELECTROCHEMICAL REDUCTION; CARBON-DIOXIDE; PHOTOELECTROCHEMICAL REDUCTION; COPPER ELECTRODE; HEMATITE; NANORODS; CATALYST; ARRAYS;
D O I：
10.1039/c4nr02902j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Cuprous oxide/hematite nanotubes (Cu2O/Fe2O3NTs) were prepared by a potentiostatic electrodeposited method, in which different structured Cu2O materials were modified onto Fe2O3 NTs surface. Among them, the material with double-layer Cu2O spheres (Cu2O/Fe2O3 NTs-30) showed excellent photoelectrocatalytic (PEC) properties with a suitable energy band gap (1.96 eV) and a smaller overpotential (0.18 V). Furthermore, Cu2O/Fe2O3 NTs-30 showed two types of synergisms in the PEC reduction of CO2: (i) between electrocatalysis and photocatalysis and (ii) between Cu2O and Fe2O3NTs. The faradaic efficiency and methanol yield reached 93% and 4.94 mmol L-1 cm(-2) after 6 h, respectively.
引用
收藏
页码：11380 / 11386
页数：7
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