Preparation and photocatalytic reduction of CO₂ on noble metal (Pt, Pd, Au) loaded Zn-Cr layered double hydroxides

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• 作者：Ken-ichi Katsumata ; Kazuya Sakai ; Kei Ikeda ; Gabriela Carja ; Nobuhiro Matsushita ; Kiyoshi Okada
• 关键词：Layered double hydroxides ; Photocatalyst ; Carbon dioxide ; Noble metals
• 刊名：Materials Letters
• 出版年：2013
• 出版时间：15 September, 2013
• 年：2013
• 卷：107
• 期：Complete
• 页码：138-140
• 全文大小：514 K

文摘

Zn-Cr layered double hydroxide (Zn-Cr LDH) and noble metal (Pt, Pd, Au) loaded Zn-Cr LDHs were prepared, and the photocatalytic reduction of CO₂ was evaluated. All samples exhibited photocatalytic conversion of CO₂ to CO under UV irradiation. Among them, 0.1 mass % Pt-loaded LDH exhibited the highest performance. This is attributed to the fact that noble metals act as a co-catalysts, not only for the reduction of recombination of electrons and holes, but also for the enhancement of multi-electron reductive reactions.