In our work, UV-response with a small visible light absorption TiO2 nanoparticles were supported on lamellar La2NiO4 perovskite to build a type I heterojunction for efficient hydrogen production under visible light. It was found that, with the increase of La2NiO4 contents, the hydrogen production rates gradually increased and amounted to the highest value when the mass fraction of La2NiO4 was 8 wt. %, which is 39.5 times that of the initial La2NiO4 nanosheets without the cocatalyst Pt. When 1 wt. % Pt was loaded, the photocatalytic activity for the composite photocatalyst increased by 369.0 times that of the initial La2NiO4. Our work should be of value for the preparation of visible responsive heterojunction photocatalysts with high activity, fair stability, and low toxicity.

中文翻译：

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由层状 La2NiO4 钙钛矿负载的 TiO2 形成的异质结可增强可见光驱动的光催化制氢

在我们的工作中，具有小的可见光吸收性 TiO2 纳米颗粒的紫外响应被支撑在层状 La2NiO4 钙钛矿上，以构建 I 型异质结，以在可见光下有效产氢。结果表明，随着La2NiO4含量的增加，产氢速率逐渐增加，当La2NiO4的质量分数为8wt时达到最高值。%，这是没有助催化剂 Pt 的初始 La2NiO4 纳米片的 39.5 倍。当 1 重量。% Pt 负载后，复合光催化剂的光催化活性比初始 La2NiO4 提高了 369.0 倍。我们的工作对于制备具有高活性、良好稳定性和低毒性的可见响应异质结光催化剂具有价值。