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首页> 外文期刊>ACS catalysis >Mesoporous Silica-Supported Ruthenium Oxide Nanoparticulates as Effcient Catalysts for Photoinduced Water Oxidation
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Mesoporous Silica-Supported Ruthenium Oxide Nanoparticulates as Effcient Catalysts for Photoinduced Water Oxidation

机译：介孔二氧化硅负载的氧化钌纳米粒子作为光诱导水氧化的有效催化剂

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摘要

The preparation of nanoparticulate RuO2 supported on mesoporous silica SBA-15 was optimized to achieve a uniform dispersion and confinement of RuO2. The supported RuO2 (NP2) has been used as the catalyst for photoinduced water oxidation with Ru(bpy)3~(2+) as the photosensitizer and S2O8~(2-) as the sacrificial oxidant. Both NP2 and the previously prepared NP1 achieved O2 yields (based on S2O8 ) of 95% and 88% and overall quantum efficiencies of 11.3% and 10.0%, respectively. These benchmark numbers far exceed those of many other metal oxide-based catalysts and previously reported RuO2 catalysts. In addition, NP2 has been recycled up to five times with minimal loss of activity.
机译：优化了介孔二氧化硅SBA-15上负载的纳米RuO2的制备，以实现RuO2的均匀分散和约束。负载的RuO2（NP2）已被用作光诱导水氧化的催化剂，Ru（bpy）3〜（2+）作为光敏剂，而S2O8〜（2-）作为牺牲氧化剂。 NP2和先前制备的NP1的O2产率（基于S2O8）分别为95％和88％，总体量子效率为11.3％和10.0％。这些基准数字远远超过许多其他基于金属氧化物的催化剂和先前报道的RuO2催化剂。此外，NP2已被回收多达五次，且活性损失最小。

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