Gogoi Debika, Makkar Priyanka, Ghosh Narendra Nath
Nano-materials Laboratory, Department of Chemistry, Birla Institute of Technology and Science, Pilani K K Birla Goa Campus, Zuarinagar, Goa 403726, India.
ACS Omega. 2021 Feb 5;6(7):4831-4841. doi: 10.1021/acsomega.0c05809. eCollection 2021 Feb 23.
Magnetic CoFeO-gCN nanocomposites were successfully synthesized, and their photocatalytic activities toward the decomposition of model synthetic dyes (e.g., methylene blue, methyl orange, and Congo red) in the presence of HO were evaluated under simulated solar light irradiation. The 50CoFeO-50gCN nanocomposite exhibited the highest catalytic activity. The catalytic activity of 50CoFeO-50gCN toward the photodegradation of some industrially used dyes (such as Drimaren Turquoise CL-B p, Drimaren Yellow CL-2R p, and Drimaren Red CL-5B p) was also examined, and the catalyst exhibited its capability to decompose the industrial dyes completely. An aqueous mixture of these dyes was prepared to mimic the dye-containing wastewater, which was fully photodegraded within 30 min. 50CoFeO-50gCN also exhibited facile magnetic separability from the reaction mixture after the accomplishment of photocatalysis reaction and stable performance after five cycles. The high photocatalytic efficiency to degrade several dyes, including dyes used in textile industries, under solar light irradiation makes 50CoFeO-50gCN a promising photocatalyst for the treatment of dye-containing wastewater discharged from industries.
成功合成了磁性CoFeO-gCN纳米复合材料，并在模拟太阳光照射下评估了它们在HO存在下对模型合成染料（如亚甲基蓝、甲基橙和刚果红）分解的光催化活性。50CoFeO-50gCN纳米复合材料表现出最高的催化活性。还研究了50CoFeO-50gCN对一些工业用染料（如Drimaren Turquoise CL-B p、Drimaren Yellow CL-2R p和Drimaren Red CL-5B p）光降解的催化活性，该催化剂表现出完全分解工业染料的能力。制备了这些染料的水性混合物以模拟含染料废水，该废水在30分钟内被完全光降解。50CoFeO-50gCN在光催化反应完成后也表现出易于从反应混合物中磁性分离的特性，并且在五个循环后性能稳定。在太阳光照射下对包括纺织工业中使用的染料在内的几种染料具有高光催化降解效率，使得50CoFeO-50gCN成为处理工业排放的含染料废水的有前景的光催化剂。
