Abstract
Metallic 1T-phase MoS2 is a newly emerging and attractive catalyst since it has more available active sites and high carrier mobility in comparison with its widely used counterpart of semiconducting 2H-MoS2. Herein, 1T/2H-MoS2(N) (N: MoO3 nanowires were used to prepare 1T/2H-MoS2) was synthesized by using molybdenum trioxide (MoO3) nanowires as the starting material and applied in the photodegradation of antibiotic residue in water. Enhanced photocatalytic performance was observed on the obtained 1T/2H-MoS2(N), which was 2.8 and 1.3 times higher than those on 1T/2H-MoS2(P) (P: commercial MoO3 powder was used to prepare 1T/2H-MoS2) and 2H-MoS2, respectively. The active component responsible for the photodegradation was detected and a reaction mechanism is proposed.
Highlights
Environmental pollution, including water contamination, seriously threatens the survival and development of human beings [1]
Antibiotic residue is one of the refractory contaminants in water, and its efficient treatment is necessary for ecosystem protection [2,3]
Photocatalysis has been intensively investigated, owing to its promising features, such as the direct conversion of solar power into chemical energy [7,8]. Numerous photocatalysts such as TiO2 [9,10,11], ZnO [12], g-C3N4 [13,14], CdS [15], and WS2 [16] have been developed for the photocatalytic application
Summary
Environmental pollution, including water contamination, seriously threatens the survival and development of human beings [1]. Numerous photocatalysts such as TiO2 [9,10,11], ZnO [12], g-C3N4 [13,14], CdS [15], and WS2 [16] have been developed for the photocatalytic application Among these photocatalysts, two-dimensional (2D) layered materials have attracted specific concern from academics and industry due to their prominent features, such as large specific surface area, strong electrical and thermal conductivity [17], high carrier mobility, and good transmittance [18,19]. Semiconducting molybdenum disulfide (2H-MoS2) is one of the promising 2D layered materials with excellent properties [22]. 1T/2H-MoS2(N) (N: MoO3 nanowires were used to prepare 1T/2H-MoS2) was successfully prepared by a facile hydrothermal method by using MoO3 nanowires as the starting material and applying visible-light-driven photocatalytic degradation of tetracycline hydrochloride in water. This article provides an alternative for the synthesis of 1T-MoS2-containing materials with high performance by modulating the starting materials
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