Issue 8, 2024, Issue in Progress

WO3/MIL-125 (Ti) composite material for enhancing the reduction of Cr(vi) under visible light

Abstract

In wastewater containing heavy metals, Cr(VI) is a potentially toxic metal, mainly derived from production and processing processes such as textile printing, dyeing, ore mining, battery applications, metal cleaning and electroplating. WO3 is widely used in photocatalytic degradation and reduction, and its utilization rate of visible light is high. However, the rapid recombination of photogenerated electron–hole pairs of WO3 limits its use. In this work, the composite material (WxMy) of WO3 and MIL-125 (Ti) was prepared by the ball milling method, and the catalyst was used to photocatalytically reduce Cr(VI). After using W90M10 as a photocatalyst for 50 min, the reduction rate of Cr(VI) can reach 99.2%, and the reduction rate is 2.3 times that of WO3. After 5 cycles of use, the reduction rate can still reach 91.3%. It is mainly due to the formation of a II-type heterojunction between WO3 and MIL-125 (Ti), which promotes the separation of photogenerated electron–hole pairs, thus improving the efficiency of photocatalytic reduction of Cr(VI).

Graphical abstract: WO3/MIL-125 (Ti) composite material for enhancing the reduction of Cr(vi) under visible light

Supplementary files

Article information

Article type
Paper
Submitted
02 Jan 2024
Accepted
24 Jan 2024
First published
08 Feb 2024
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2024,14, 5142-5148

WO3/MIL-125 (Ti) composite material for enhancing the reduction of Cr(VI) under visible light

C. Jin, J. Liu, Y. Yin and Z. Li, RSC Adv., 2024, 14, 5142 DOI: 10.1039/D4RA00015C

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