The material characteristics and properties of transition metal dichalcogenide (TMDCs) have gained research interest in various fields, such as electronics, catalytic, and energy storage. In particular, many researchers have been focusing on the applications of TMDCs in dealing with environmental pollution. TMDCs provide a unique opportunity to develop higher-value applications related to environmental matters. This work highlights the applications of TMDCs contributing to pollution reduction in (i) gas sensing technology, (ii) gas adsorption and removal, (iii) wastewater treatment, (iv) fuel cleaning, and (v) carbon dioxide valorization and conversion. Overall, the applications of TMDCs have successfully demonstrated the advantages of contributing to environmental conversation due to their special properties. The challenges and bottlenecks of implementing TMDCs in the actual industry are also highlighted. More efforts need to be devoted to overcoming the hurdles to maximize the potential of TMDCs implementation in the industry.

Central European Institute of Technology Brno University of Technology Purkynova 656 123 612 00 Brno Czech Republic

Department of Chemical and Environmental Engineering University of Nottingham 43500 Semenyih Malaysia

Department of Chemical Engineering Monash University Clayton Victoria 3800 Australia

Institute of Process Engineering and NETME Centre Brno University of Technology Technicka 2896 2 616 69 Brno Czech Republic

Research Centre for Sustainable Technologies Faculty of Engineering Computing and Science Swinburne University of Technology Jalan Simpang Tiga 93350 Kuching Malaysia

State Key Laboratory of Crystal Materials Shandong University Jinan 250100 China

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