Wang Qingyao, Zhao Shengzhan, Zhao Yuhua, Deng Yadan, Yang Wen, Ye Yizhuang, Wang Kesheng
Anhui Engineering Research Center for High Efficiency Intelligent Photovoltaic Module, Chaohu University, Hefei 238000, China.
School of Chemistry and Materials Science, Ludong University, Yantai 264025, China.
Spectrochim Acta A Mol Biomol Spectrosc. 2024 Jan 5;304:123405. doi: 10.1016/j.saa.2023.123405. Epub 2023 Sep 14.
Photocatalytic technology was recognized to be the effective strategy to overcome the obstacles of environment pollution and energy shortage, and the novel photocatalyst design/construction was the key point for photocatalytic performance improvement. In this paper, the Z-scheme BiO and CeO heterojunction was constructed on TiO nanotube arrays (TiO NTs) by the hydrothermal deposition method. The BiO-CeO cosensitization not only extended the solar absorption region but also accelerated the photoelectron separation and transfer, finally enhanced the photocatalytic property. The photocatalysts exhibited the high RhB/MB photodegradation and Cr(VI) reduction, and the photoelectric conversion and photocatalytic H evolution were also preeminent. The Z-scheme heterojunction construction was recognized to be the reason for the high photoactivity, and O and OH radicals were formed and investigated as the main active species for the dye photodegradation. The work gives the simple method and idea to construct novel ternary Z-scheme heterojunctions with high photocatalytic capacity for environment remediation and new energy development.
光催化技术被认为是克服环境污染和能源短缺障碍的有效策略，而新型光催化剂的设计/构建是提高光催化性能的关键。本文采用水热沉积法在TiO纳米管阵列（TiO NTs）上构建了Z型BiO和CeO异质结。BiO-CeO共敏化不仅拓宽了太阳能吸收区域，还加速了光电子的分离和转移，最终提高了光催化性能。该光催化剂表现出高的RhB/MB光降解和Cr(VI)还原能力，光电转换和光催化析氢性能也很突出。Z型异质结的构建被认为是高光活性的原因，O和OH自由基被确定并研究为染料光降解的主要活性物种。这项工作为构建具有高光催化能力的新型三元Z型异质结用于环境修复和新能源开发提供了简单的方法和思路。
