Novel 0D/1D ZnBi2O4/ZnO S-scheme photocatalyst for hydrogen production and BPA removal
Novel 0D/1D ZnBi2O4/ZnO S-scheme photocatalyst for hydrogen production and BPA removal
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用于制氢和去除 BPA 的新型 0D/1D ZnBi2O4/ZnO S 型光催化剂
DOI：
10.1016/j.ijhydene.2021.04.208
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发表时间：
2021-06-25
影响因子：
7.2
通讯作者：
Liu, Qinglei
中科院分区：
文献类型：
--
作者：
Bahadoran, Ashkan;Masudy-Panah, Saeid;Liu, Qinglei
发展界面连接是提高光催化活性的突破性策略之一。在此，成功合成了ZnBi2O4纳米颗粒-ZnO纳米棒异质结，并将其用作双功能光催化剂，用于光催化降解双酚A和产氢，并在模拟太阳光照射下提高了光催化活性。 ZnO-20 wt% ZnBi2O4 样品获得最高的 H-2 产量（3.44 mmol g(-1) h(-1)），比纯 ZnO 高约 12.7 倍。根据 HRTEM 结果，ZnO 和 ZnBi2O4 之间形成了紧密的界面连接，可以作为载流子的捕获中心，从而提高光催化活性。此外，高纵横比的 1D ZnO 纳米棒和小尺寸的 0D ZnBi2O4 纳米颗粒（类似于 10 nm）增加了界面接触的数量，从而更有效地抑制了载流子的复合。基于捕获实验、ESR和莫特肖特基分析，ZnBi2O4-ZnO杂化光催化剂遵循S型电荷转移机制。 (C) 2021 氢能源出版物有限责任公司。由爱思唯尔有限公司出版。保留所有权利。
Developing interfacial connections is one of the breakthrough strategies to improve the photocatalytic activity. Herein, ZnBi2O4 nanoparticles-ZnO nanorods heterojunction was successfully synthesized and used, as a dual-function photocatalyst, for photocatalytic degradation of Bisphenol A and hydrogen production with improved photocatalytic activity under simulated sunlight irradiation. The highest H-2 production (3.44 mmol g(-1) h(-1)) was obtained for ZnO-20 wt% ZnBi2O4 sample, which is around 12.7 times higher than pure ZnO. According to the HRTEM result, the intimate interfacial connections are formed between ZnO and ZnBi2O4 which could act as trapping centers for charge carriers and results in the boosted photocatalytic activity. Further, a high aspect ratio of 1D ZnO nanorods and small size of 0D ZnBi2O4 nanoparticles (similar to 10 nm) increases the number of interfacial contacts and thus the charge carriers' recombination was suppressed more efficiently. Based on the trapping experiments, ESR and Mott-Schottky analysis, ZnBi2O4-ZnO hybrid photocatalyst followed the S-scheme charge transfer mechanism. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.