Mesoporous In(OH)3 for photoreduction of CO2 into renewable hydrocarbon fuels

被引：50

作者：

Guo, Jianjun ^{[1
,2
,3
]}

Ouyang, Shuxin ^{[2
,3
]}

Kako, Tetsuya ^{[1
,2
]}

Ye, Jinhua ^{[1
,2
,3
,4
]}

机构：

[1] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido, Japan

[2] Natl Inst Mat Sci, Environm Remediat Mat Unit, Tsukuba, Ibaraki 3050044, Japan

[3] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton WPI MANA, Tsukuba, Ibaraki 3050044, Japan

[4] Tianjin Univ, Sch Mat Sci & Engn, TU NIMS Joint Res Ctr, Tianjin 300072, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2013年 / 280卷

关键词：

In(OH)(3) photocatalyst; Sol-gel synthesis; Mesoporous structure; CO2; photoreduction; CHEMICAL BATH DEPOSITION; VISIBLE-LIGHT; INDIUM HYDROXIDE; CARBON-DIOXIDE; THIN-FILMS; PHOTOCATALYST; MECHANISM; CATALYST; KINETICS; WATER;

D O I：

10.1016/j.apsusc.2013.05.003

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：

Indium hydroxide (In(OH)(3)) with mesoporous structure has been synthesized via a sol-gel hydrothermal treatment. The phase compositions, optical properties, and morphologies of the photocatalysts were systematically investigated via powder X-ray diffraction, UV-visible absorption spectroscopy, scanning electron microscopy and energy-dispersive X-ray spectroscopy, chemisorption analyzer and transmission electron microscopy. The theoretical calculation based on density functional theory demonstrated that the potentials of valence band and conduction band of In(OH)(3) are both suitable for CO2 photoreduction. The photocatalytic efficiencies of the samples were characterized by testing the photoreduction of CO2 to CH4 under full-arc Xe lamp irradiation. The sample modified with mesoporous structure is about 20 times higher in efficiency than that of sample without mesoporous structure, which is attributed to the outstanding structure characteristics in higher surface area and strong adsorption of the mesoporous structure. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：418 / 423

页数：6

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