Semiconductor photocatalyst as a new type of green and sustainable energy material has extensively used in wastewater and gas treatment. In this work, we prepared Pt/h-BN/BiOBr composite by an alcohol-soluble hydrolysis-assisted photoreduction method. The photocatalytic activity was evaluated by the degradation of bisphenol A under simulated sunlight, and the degradation efficiency of BiOBr, h-BN/BiOBr, Pt/BiOBr, and Pt/h-BN/BiOBr were 55.13%, 74.91%, 89.00%, and 98.54%, respectively. The results showed single composited with h-BN or Pt could improve the photocatalytic performance of BiOBr, while double composited with h-BN and Pt could play a synergistic effect on further improving the activity. The interaction between h-BN and BiOBr was electrostatic interactions, and that Pt as a plasma metal was coupling with BiOBr due to its localized surface plasmon resonance (LSPR) effect. The composition, morphology, optical property, and separation efficiency of photo-induced carriers and dominant active radicals were investigated. Based on the results, a possible mechanism was proposed. The excellent photocatalytic activity of Pt/h-BN/BiOBr composite photocatalyst could be attributed to the broadened light-response range after Pt loading, and enhanced electron–hole separation efficiency due to the electron capturer role of Pt and the hole transfer function of h-BN.

中文翻译：

---

Pt/h-BN/BiOBr复合材料光催化降解双酚A：h-BN和Pt的协同作用

半导体光催化剂作为一种新型绿色可持续能源材料，已广泛应用于废水和气体处理。在这项工作中，我们通过醇溶性水解辅助光还原方法制备了 Pt/h-BN/BiOBr 复合材料。通过在模拟阳光下降解双酚A来评价光催化活性，BiOBr、h-BN/BiOBr、Pt/BiOBr、Pt/h-BN/BiOBr的降解效率分别为55.13%、74.91%、89.00%，和 98.54%，分别。结果表明，h-BN或Pt单独复合可以提高BiOBr的光催化性能，而h-BN和Pt双重复合可以进一步提高活性。h-BN和BiOBr之间的相互作用是静电相互作用，由于其局部表面等离子体共振（LSPR）效应，Pt作为等离子体金属与BiOBr耦合。研究了光致载流子和主要活性自由基的组成、形貌、光学性质和分离效率。基于这些结果，提出了一种可能的机制。Pt/h-BN/BiOBr 复合光催化剂优异的光催化活性可归因于 Pt 负载后光响应范围的拓宽，以及由于 Pt 的电子捕获作用和 h 的空穴转移功能增强的电子-空穴分离效率。 -BN。