Abstract
In this present work, tungsten disulfide (WS2) nanoparticles (NPs) by the simple hydrothermal process are a potential photocatalyst that displays a considerable reactivity in heavy metal reduction and degradation of antibiotics pollutants. The WS2 to form nanoparticles to restrict the rapid recombination rate of photo-induced carriers is considered to be a profitable system to promote the ability of photocatalytic heavy metal reduction. The Pb (II) reduction efficiency of the WS2 NPs photocatalyst approach 89.4%, which is 3 folds the rate of bare WS2. Besides, the superior photocatalytic capability for tetracycline (TC) removal (96.6%) also was 2.7 times higher than those of bare WS2. The excellent photocatalytic performance was due to the efficient holes and electrons separation of WS2 and the formation of NPs structure, which received robust photocatalytic redox reaction potentials. The new one-dimensional structure of WS2 NPs decreases the transfer route of photo-response charge carriers. This study supplied a vision to the route of interfacial separation and transport for exciting holes and electrons, which can relate to the interfacial migration of perfected WS2 NPs photocatalysts. It exhibited impressive photocatalytic capability of heavy metal reduction and antibiotics removal. This investigation will offer an observation of the channel of interfacial engineering and separation for excited electrons to solve the environmental pollution problem.
Published Version
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