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• W2020199431 abstract "Abstract Controlling amount of intrinsic S vacancies was achieved in ZnS spheres which were synthesized by a hydrothermal method using Zn and S powders in concentrated NaOH solution with NaBH 4 added as reducing agent. These S vacancies efficiently extend absorption spectra of ZnS to visible region. Their photocatalytic activities for H 2 production under visible light were evaluated by gas chromatograph and the midgap states of ZnS introduced by S vacancies were examined by density functional calculations. Our study reveals that the concentration of S vacancies in the ZnS samples can be controlled by varying the amount of the reducing agent NaBH 4 in the synthesis and the prepared ZnS samples exhibit photocatalytic activity for H 2 production under visible-light irradiation without loading noble metal. This photocatalytic activity of ZnS increases steadily with increasing the concentration of S vacancies until the latter reaches an optimum value. Our density functional calculations show that S vacancies generate midgap defect states in ZnS, which lead to visible-light absorption and responded." @default.
• W2020199431 created "2016-06-24" @default.
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• W2020199431 date "2015-02-25" @default.
• W2020199431 modified "2023-10-16" @default.
• W2020199431 title "Synthesis and characterization of ZnS with controlled amount of S vacancies for photocatalytic H2 production under visible light" @default.
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• W2020199431 doi "https://doi.org/10.1038/srep08544" @default.
• W2020199431 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4339798" @default.
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