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首页> 外文期刊>Catalysis science & technology >Water-soluble sulfonated-graphene-platinum nanocomposites: facile photochemical preparation with enhanced catalytic activity for hydrogen photogeneration
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Water-soluble sulfonated-graphene-platinum nanocomposites: facile photochemical preparation with enhanced catalytic activity for hydrogen photogeneration

机译：水溶解磺酸盐 - 铂纳米复合材料：氢光生成的催化活性，使光化学制剂具有增强

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摘要

By using sulfonated graphene as a support for the platinum (Pt) cocatalyst, a new water-soluble composite (GSO3Pt) characteristic of small-sized and "clean" Pt nanopartides on graphene was prepared by a facile photoreduction method, in which Hantzsch 1,4-dihydropyridine (HEH) was used as a reductant. The photocatalytic system, containing eosin Y (EY) as a sensitizer, GSO3Pt as a catalyst, and TEOA as a sacrificial electron donor, exhibited an 18 times increase in hydrogen (H2) production compared to when colloidal Pt rather than GSO3Pt was used to conduct the same photocatalytic reaction. The higher turnover number (TON), up to 6410 ± 770 based on platinum, is attributed to the efficient forward electron-transfer mediated by graphene, which was dearly verified for the first time by using the unique spectroscopic property of EY.
机译：通过使用磺化石墨烯作为对铂（PT）Cocatalyst的支撑，这是一种新的水溶性复合材料（GSO3PT）特征，用于小型和“清洁” PT纳米果烯在石墨烯上，由hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1，hantzsch 1， 4-二氢吡啶（HEH）用作还原剂。 光催化系统包含eosin y（ey）作为敏化剂，GSO3PT作为催化剂，作为牺牲电子供体的TEOA，与胶体PT而不是GSO3PT进行的氢（H2）产生增长了18倍 相同的光催化反应。 基于铂金高达6410±770的较高的周转率（TON）归因于石墨烯介导的有效的正向电子转移，该转移是通过使用EY的独特光谱特性对此进行了深刻验证的。

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