Analyzing the Applicability of Molybdenum Disulfide in Water-Environment Remediation
Received date: 2021-11-01
Revised date: 2022-01-10
Online published: 2022-05-31
Supported by
the National Key Research and Development Program “Research on integrated technology and equipment system of petroleum contaminated soil remediation”(2019YFC1804104);The National Natural Science Foundation of China-Shandong Joint Fund “Research on BES strengthening mechanism for ecological restoration of oil-contaminated soil in the Yellow River Delta”(U1906222)
Because of the development of nanotechnology in recent years， various novel functional nanomaterials have been used in the remediation of water pollution. As the most studied two-dimensional transition metal dichalcogenide nanomaterial， molybdenum disulfide （MoS2） has unique structures and excellent physicochemical properties， leading to promising environmental capabilities in the field of water-environment remediation. MoS2 and MoS2-based nanocomposites are characterized by a large specific surface area， multiple active sites and strong photocatalytic activity， which can effectively remove heavy metal ions （e.g.， Co2+， Cd2+， Cu2+， Pb2+， Hg+， and Cr3+） and organic pollutants （e.g.， oils， organic dyes， and antibiotics） in a water environment through adsorption， redox and photocatalytic degradation. They have become a hot topic in water pollution remediation research. In this review， the effects of morphology， surface modification， phase， and surface defects of MoS2 on the removal performance of water pollutants are described. In addition， various synthesis methods and structural characteristics of MoS2 and MoS2-based binary and ternary nanocomposites are summarized. The adsorption， catalytic， and redox mechanisms of MoS2 and MoS2-based nanocomposites for the removal of heavy metals and organic pollutants， as well as the main influencing factors and mechanisms， are discussed. In addition， the environmental risk assessment of MoS2 and its oxidation products and the methods for recycling MoS2 and its nanocomposites are reviewed. Finally， the research direction and application potential of MoS2 and MoS2-based nanocomposites are discussed， which lays a theoretical foundation for the further study of MoS2 in water-environment remediation. Further research should focus on a more facile and low-cost method for the synthesis of MoS2 nanocomposites with good stability， high-efficiency performance and good environmental sustainability. Meanwhile， the long-term environmental transformations， as well as the impact of MoS2 and MoS2-based nanocomposites on the ecological system and human health， must be thoroughly investigated before large-scale industrial applications in water-environment remediation.
Hui ZENG , Qixing ZHOU . Analyzing the Applicability of Molybdenum Disulfide in Water-Environment Remediation[J]. Advances in Earth Science, 2022 , 37(5) : 462 -471 . DOI: 10.11867/j.issn.1001-8166.2021.117
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