Korepanov Vyacheslav E, Reutova Olesia A, Kharlamova Tamara S, Vodyankina Olga V, Kulinich Sergei A, Svetlichnyi Valery A
Laboratory of Advanced Materials and Technology, Tomsk State University, Tomsk 634050, Russia.
Department of Physical and Colloid Chemistry, Faculty of Chemistry, Tomsk State University, Tomsk 634050, Russia.
Nanomaterials (Basel). 2024 Dec 12;14(24):1995. doi: 10.3390/nano14241995.
Photocatalysis offers a powerful approach for water purification from toxic organics, hydrogen production, biosolids processing, and the conversion of CO into useful products. Further advancements in photocatalytic technologies depend on the development of novel, highly efficient catalysts and optimized synthesis methods. This study aimed to develop a laser synthesis technique for bismuth oxyhalide nanoparticles (NPs) as efficient and multifunctional photocatalysts. Laser ablation of a Bi target in a solution containing halogen salt precursors, followed by laser plasma treatment of the resulting colloid, yielded crystalline bismuth oxyhalides (BiOX, where X = Cl, Br, or I) NPs without the need for additional annealing. The composition, structure, morphology, and optical properties of the synthesized BiOX (X = Cl, Br, I) NPs were characterized using XRD analysis, electron microscopy, Raman spectroscopy, and UV-Vis spectroscopy. The effect of the halogen on the photocatalytic activity of the double oxides was investigated. The materials exhibited high photocatalytic activity in the degradation of persistent model pollutants like Rhodamine B, tetracycline, and phenol. Furthermore, the BiOX NPs demonstrated good efficiency and high yield in the selective oxidation of 5-hydroxymethylfurfural (5-HMF) to 2,5-furandicarboxylic acid (FDCA). The obtained results highlight the promising potential of this laser synthesis approach for producing high-performance bismuth oxyhalide photocatalysts.
光催化为从有毒有机物中净化水、制氢、生物固体处理以及将一氧化碳转化为有用产品提供了一种强大的方法。光催化技术的进一步发展取决于新型高效催化剂的开发和优化的合成方法。本研究旨在开发一种用于制备卤氧化铋纳米颗粒（NPs）的激光合成技术，该纳米颗粒作为高效多功能光催化剂。在含有卤素盐前驱体的溶液中对铋靶进行激光烧蚀，然后对所得胶体进行激光等离子体处理，无需额外退火即可得到结晶卤氧化铋（BiOX，其中X = Cl、Br或I）纳米颗粒。使用X射线衍射分析、电子显微镜、拉曼光谱和紫外可见光谱对合成的BiOX（X = Cl、Br、I）纳米颗粒的组成、结构、形态和光学性质进行了表征。研究了卤素对双氧化物光催化活性的影响。这些材料在降解罗丹明B、四环素和苯酚等持久性模型污染物方面表现出高光催化活性。此外，BiOX纳米颗粒在将5-羟甲基糠醛（5-HMF）选择性氧化为2,5-呋喃二甲酸（FDCA）方面表现出良好的效率和高产率。所得结果突出了这种激光合成方法在制备高性能卤氧化铋光催化剂方面的广阔前景。
