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Recent advances in TiO 2 /ZnS-based binary and ternary photocatalysts for the degradation of organic pollutants

Science of The Total Environment, ISSN: 0048-9697, Vol: 868, Page: 161525
2023
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Most Recent News

University of Malaysia Sarawak Reports Findings in Photocatalytics (Recent advances in TiO2/ZnS-based binary and ternary photocatalysts for the degradation of organic pollutants)

2023 JAN 26 (NewsRx) -- By a News Reporter-Staff News Editor at Nanotech Daily -- New research on Nanotechnology - Photocatalytics is the subject of

Review Description

Semiconductor-mediated photocatalysis plays a pivotal role in the elimination of organic pollutants from water systems. Titanium dioxide (TiO 2 ) and zinc sulphide (ZnS) semiconductors are commonly utilized as photocatalysts in water purification due to their physical and chemical stability and also large band gap. The drawbacks of both semiconductors, nevertheless, prevent them from being used in real and large-scale treatments. Therefore, binary and ternary-based TiO 2 /ZnS nanostructured materials may be a promising solution to improve the quantum efficiency, structural, and electrical features of pure TiO 2 and ZnS semiconductors for improved photoefficiency. This review aims to unravel the development of binary TiO 2 /ZnS and the modification of ternary photocatalysts (TiO 2 /ZnS-X, X = metal, non-metal, and dye sensitization) by various approaches. The engineered TiO 2 /ZnS-based ternary nanostructured materials have exhibited exceptional performance to accelerate the degradation of organic pollutants in wastewater. These materials were fabricated by modifying TiO 2 /ZnS binary composite and embedding co-catalysts like carbonaceous material, polymeric material, transition metal, metal oxide, and metal. The relationship between the properties of the resulting nanomaterials and their photocatalytic performances has been examined. This review has also placed a special focus on the synthetic routes applied to derive the binary and ternary TiO 2 /ZnS composites. Another aim of this review is to scrutinize the factors that influence the performance of binary and ternary-based TiO 2 /ZnS composites on the degradation of organic pollutants. Opportunities for further investigation have been also outlined, along with limitations and impediments based on the current findings.

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