Optimizing the Deposition of Hydrogen Evolution Sites on Suspended Semiconductor Particles using On-Line Photocatalytic Reforming of Aqueous Methanol Solutions
Optimizing the Deposition of Hydrogen Evolution Sites on Suspended Semiconductor Particles using On-Line Photocatalytic Reforming of Aqueous Methanol Solutions
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DOI：
10.1002/cssc.201200374
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发表时间：
2012-01-01
期刊：
影响因子：
8.4
通讯作者：
Muhler, Martin
中科院分区：
文献类型：
--
作者：
Busser, G. Wilma;Mei, Bastian;Muhler, Martin
光催化剂上析氢位点的沉积是合成对整个光催化水分解具有活性的催化剂的多步过程中的关键步骤。开发了传统光沉积的替代方法，应用甲醇水溶液的光催化重整将金属颗粒沉积在半导体材料上，例如Ga2O3和(Ga0.6Zn0.4)(N0.6O0.4)。该方法允许基于助催化剂前体的逐步添加和对逸出氢气的连续在线监测来优化助催化剂的负载。此外，可以直接建立不同助催化剂之间的协同效应。
The deposition of hydrogen evolution sites on photocatalysts is a crucial step in the multistep process of synthesizing a catalyst that is active for overall photocatalytic water splitting. An alternative approach to conventional photodeposition was developed, applying the photocatalytic reforming of aqueous methanol solutions to deposit metal particles on semiconductor materials such as Ga2O3 and (Ga0.6Zn0.4)(N0.6O0.4). The method allows optimizing the loading of the co-catalysts based on the stepwise addition of their precursors and the continuous online monitoring of the evolved hydrogen. Moreover, a synergetic effect between different co-catalysts can be directly established.