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

页码：11380 / 11386

页数：7

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