环氧化物辅助合成具有光催化活性的 TiO2 和 Pt/TiO2 气凝胶

IF 1.3 4区化学 Q4 CHEMISTRY, PHYSICAL Kinetics and Catalysis Pub Date : 2024-11-04 DOI:10.1134/S0023158424601980

L. A. Polevoi, E. A. Kozlova, A. V. Zhurenok, E. Yu. Gerasimov, A. A. Saraev, M. V. Golikova, A. E. Baranchikov

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引用次数: 0

摘要

利用环氧化物在 N,N-二甲基甲酰胺中诱导凝胶化的方法，首次获得了具有高比表面积（420 m2/g）和低几何密度（约 0.1 g/cm3）的无定形二氧化钛气凝胶。用 H2PtCl6 和 NaBH4 的水溶液浸渍所得到的气凝胶，然后进行热退火处理，就有可能得到 Pt/TiO2 光催化剂，二氧化钛基气凝胶在从酒精水溶液中生成氢气方面显示出极高的活性（~5 \({\{mmo}}{{\{text{l}}}_{{{{{\text{H}}}_{{\{text{2}}}}}}}\) h-1 g-1）。

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Epoxide-Assisted Synthesis of Photocatalytically Active TiO2 and Pt/TiO2 Aerogels

For the first time, amorphous TiO₂ aerogels with a high specific surface area (420 m²/g) and low geometric density (~0.1 g/cm³) were obtained using epoxide-induced gelation in N,N-dimethylformamide. Impregnation of the resulting aerogels with aqueous solutions of H₂PtCl₆ and NaBH₄ followed by thermal annealing made it possible to obtain Pt/TiO₂ photocatalysts, which showed very high activity for titanium dioxide–based aerogels in the generation of hydrogen from aqueous alcohol solutions (~5 \({\text{mmo}}{{{\text{l}}}_{{{{{\text{H}}}_{{\text{2}}}}}}}\) h^–1 g^–1).

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来源期刊

Kinetics and Catalysis 化学-物理化学

CiteScore

2.10

自引率

27.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Kinetics and Catalysis Russian is a periodical that publishes theoretical and experimental works on homogeneous and heterogeneous kinetics and catalysis. Other topics include the mechanism and kinetics of noncatalytic processes in gaseous, liquid, and solid phases, quantum chemical calculations in kinetics and catalysis, methods of studying catalytic processes and catalysts, the chemistry of catalysts and adsorbent surfaces, the structure and physicochemical properties of catalysts, preparation and poisoning of catalysts, macrokinetics, and computer simulations in catalysis. The journal also publishes review articles on contemporary problems in kinetics and catalysis. The journal welcomes manuscripts from all countries in the English or Russian language.