Effect of H2 gas as a reductant on photoreduction of CO2 over a Ga2O3 photocatalyst
Effect of H2 gas as a reductant on photoreduction of CO2 over a Ga2O3 photocatalyst
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DOI：
10.1016/j.cplett.2008.10.079
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发表时间：
2008-12-15
影响因子：
2.8
通讯作者：
Tanaka, Tsunehiro
中科院分区：
文献类型：
--
作者：
Teramura, Kentaro;Tsuneoka, Hideo;Tanaka, Tsunehiro
以Ga（2）O（3）为光催化剂，在H（2）为还原剂的条件下，CO（2）光还原反应在室温和常压下选择性地生成CO气体。使用在1073 K下煅烧6小时的β-Ga（2）O（3），CO（2）的最佳转化率约为3%。CO的生成取决于引入体系的H2和CO2的量。CO（2）在Ga（2）O（3）上的光还原涉及两种化学吸附物种-H（2）和CO（2）。这意味着光催化反应将在典型的Langmuir-Hinshelwood机理的基础上进行。(C)2008 Elsevier B. V.保留所有权利。
Ga(2)O(3) was used as a photocatalyst for the photoreduction of CO(2) in the presence of H(2) as a reductant; in this process CO gas was selectively produced at room temperature and ambient pressure. The optimum conversion of CO(2) was approximately 3% using beta-Ga(2)O(3) calcined at 1073 K for 6 h. The formation of CO depended on the amounts of H(2) and CO(2) introduced into the system. The photoreduction of CO(2) on Ga(2)O(3) involves two chemisorbed species-H(2) and CO(2). This implies that the photocatalytic reaction would proceed on the basis of the typical Langmuir-Hinshelwood mechanism. (C) 2008 Elsevier B.V. All rights reserved.