Al-Incorporated Mesoporous Silica Supported ZnFe2O4 for Photocatalytic Hydrogen Evolution,ChemistrySelect

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Al-Incorporated Mesoporous Silica Supported ZnFe2O4 for Photocatalytic Hydrogen Evolution
ChemistrySelect ( IF 1.9 ) Pub Date : 2021-09-09 , DOI: 10.1002/slct.202102163
Dan Chen ₁ , Yingying Zhang ₁ , Daoyuan Wang ₁ , Weide Wang ₂ , Yao Xu ₁ , Guangren Qian ₁

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Non-noble metal photocatalysts have received widespread attention with the popularity of photocatalytic hydrogen evolution. Here, a brand-new series of ZnFe₂O₄/Al-MCM-41 photocatalysts were synthesized with a simple hydrothermal strategy and analyzed through various characterizations. The results revealed that 40 % loading of Zinc ferrite (ZnFe₂O₄) showed the most remarkable hydrogen evolution effect without noble metal decorated. It has a maximum photocatalytic hydrogen evolution of 4525.4 μmol g⁻¹ in 3 h, which is about 5.4 times higher than that of pure ZnFe₂O₄. These results are mainly owing to the loading of Al-MCM-41, which can provide more surface reaction sites and delay the recombination of charges and holes. Moreover, the composite shows good cyclability and stability, with a high hydrogen evolution after three repeated cycles.

中文翻译：

掺铝介孔二氧化硅负载 ZnFe2O4 用于光催化析氢

随着光催化析氢的普及，非贵金属光催化剂受到了广泛关注。在这里，采用简单的水热策略合成了一系列全新的 ZnFe ₂ O ₄ /Al-MCM-41 光催化剂，并通过各种表征进行了分析。结果表明，在没有贵金属装饰的情况下，铁酸锌（ZnFe ₂ O ₄）负载量为 40% 时，析氢效果最显着。3 h最大光催化析氢量为 4525.4 μmol g ^-1，是纯 ZnFe ₂ O _{4 的}约 5.4 倍. 这些结果主要是由于Al-MCM-41的负载，它可以提供更多的表面反应位点并延迟电荷和空穴的复合。此外，该复合材料显示出良好的循环性和稳定性，在三个重复循环后具有较高的析氢率。

更新日期：2021-09-10

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