Near-infrared responsive magnetic photocatalyst based on NaYF:Yb/Er@CuO@MoS@FeO for the efficient degradation of organic contaminants

• Published in: New journal of chemistry Vol. 48; no. 17; pp. 7688 - 7698
• Main Authors: Ma, Yuangong, Zhang, Wensheng, Wu, Zhifang, Liang, Zhishan, Huang, Youlin, Tan, Qingmei, Liu, Tianren, Han, Dongxue, Niu, Li
• Format: Journal Article
• Published: 29.04.2024
• ISSN: 1144-0546; 1369-9261
• DOI: 10.1039/d4nj00415a

In the realm of photocatalysis, effectively utilizing solar energy, especially the near-infrared (NIR) spectrum, presents substantial challenges. To tackle this issue, a novel composite of NaYF 4 :Yb 3+ /Er 3+ @Cu 2 O@MoS 2 @Fe 3 O 4 (denoted as NYE@Cu 2 O@MoS 2 @Fe 3 O 4 ) was ingeniously fabricated and assessed for the photodegradation of organic contaminants. By harnessing the distinct properties of upconversion materials, narrow bandgap semiconductors, and magnetic substances, the NYE@Cu 2 O@MoS 2 @Fe 3 O 4 catalyst possesses a photodegradation rate of 92% for the rhodamine B dye under NIR light radiation, which is superior to NYE@Cu 2 O (50%) and NYE@Cu 2 O@MoS 2 (85%). The enhanced performance in the near-infrared photocatalysis of NYE@Cu 2 O@MoS 2 @Fe 3 O 4 is mainly attributed to the synergistic effect of various components, which promotes an increase in photo-induced carrier generation and facilitates their efficient transfer and energy utilization under NIR irradiation. This study provides a possible route for the near-infrared photocatalytic degradation of pollutants in areas with limited light or even dark conditions. In the realm of photocatalysis, effectively utilizing solar energy, especially the near-infrared (NIR) spectrum, presents substantial challenges.