Zhang Sheli, Yan Yuerong, Hu Wei, Fan Yunchang
College of Science and Technology, Jiaozuo Teachers College, Jiaozuo 454000, China.
College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China.
Molecules. 2023 Jul 20;28(14):5554. doi: 10.3390/molecules28145554.
Metal oxide nanoparticles (NPs) have been widely used as catalysts in the chemical industry, but their preparation is usually limited by strict conditions such as high temperature, elevated pressure, and the use of volatile and highly toxic organic solvents. To solve this problem, this work developed an environmentally benign method using green solvents, i.e., natural deep eutectic solvents (NADESs), as a reaction medium to prepare copper oxide (CuO) particles. The experimental results suggested that the synthesized CuO particles were sheet-like mesoporous NPs, and they exhibited excellent catalytic performance towards the photodegradation of rhodamine B (RhB) in the presence of potassium monopersulfate (PMS). The catalytic activity of the synthesized CuO NPs was better than that of the reported metal oxide-based catalysts. Reactive species such as photoexcited holes, superoxide radicals, and singlet oxygen were involved in the RhB degradation. These results indicated that NADESs are good media for the preparation of CuO NPs, and exhibit the potential for application to the preparation of other metal oxides.
金属氧化物纳米颗粒（NPs）在化学工业中已被广泛用作催化剂，但其制备通常受到高温、高压以及使用挥发性和高毒性有机溶剂等严格条件的限制。为了解决这个问题，本研究开发了一种环境友好的方法，使用绿色溶剂，即天然深共熔溶剂（NADESs）作为反应介质来制备氧化铜（CuO）颗粒。实验结果表明，合成的CuO颗粒为片状介孔NPs，在过一硫酸钾（PMS）存在下，它们对罗丹明B（RhB）的光降解表现出优异的催化性能。合成的CuO NPs的催化活性优于报道的金属氧化物基催化剂。光激发空穴、超氧自由基和单线态氧等活性物种参与了RhB的降解。这些结果表明，NADESs是制备CuO NPs的良好介质，并展示了应用于制备其他金属氧化物的潜力。
