Photocatalytic reduction of CO2 on Cu2O-loaded Zn-Cr layered double hydroxides

被引：137

作者：

Jiang, Haoyang ^{[1
]}

Katsumata, Ken-ichi ^{[2
]}

Hong, Jeongsoo ^{[3
]}

Yamaguchi, Akira ^{[1
]}

Nakata, Kazuya ^{[2
]}

Terashima, Chiaki ^{[2
]}

Matsushita, Nobuhiro ^{[1
]}

Miyauchi, Masahiro ^{[1
]}

Fujishima, Akira ^{[2
]}

机构：

[1] Tokyo Inst Technol, Dept Mat Sci & Engn, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528552, Japan

[2] Tokyo Univ Sci, Photocatalysis Int Res Ctr, 2641 Yamazaki, Noda, Chiba 2788510, Japan

[3] Nagoya Inst Technol, Adv Ceram Res Ctr, Showa Ku, Nagoya, Aichi 4668555, Japan

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 224卷

基金：

日本学术振兴会;

关键词：

Photocatalytic reduction of CO2; Layered double hydroxides; Cu2O; Electron trap; CHARGE-CARRIER DYNAMICS; CARBON-DIOXIDE; VISIBLE-LIGHT; AL; CU; HYDROTALCITE; NI; NANOHETEROSTRUCTURES; NANOCRYSTALS; COCATALYST;

D O I：

10.1016/j.apcatb.2017.11.011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of Cu2O-loaded Zn-Cr layered double hydroxides (LDHs) was prepared via an in situ reduction process from Cu-Zn-Cr ternary LDHs and applied to the photoreduction of CO2. The formation of Cu2O nanoparticles and the preservation of the LDH structure was confirmed by X-ray diffraction and transmission electron microscopy. Among the loaded LDHs, the 0.1Cu(2)O@Zn1.8Cr LDH exhibited optimal activity for the conversion of CO2 into CO in pure water and was superior to both the corresponding Cu-Zn-Cr ternary LDH and pristine Zn2Cr LDHs. In addition, the production of CO was further promoted by increasing the solubility of CO2 using a nano-bubble solution instead of pure water. The loaded Cu2O nanoparticles probably function as effective electron traps, promoting charge separation and providing active sites for CO2 reduction.

引用

页码：783 / 790

页数：8

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