Keywords Electrospinning Hydrothermal SnS /SnO Visible light 2 2 Cr(VI) reduction Introduction As a contaminant in wastewater, Cr(VI) is very hazardous owing to its acute toxicity to humans and its high solubility in water, so the removal of Cr(VI) is important . In order to remove Cr(VI) from wastewater, conversion of Cr(VI) into Cr(III) is considered to be one of the usable methods, since Cr(III) is eco-friendly and can be easily precipitated and removed as a solid waste like Cr(OH) . Therefore, how to efﬁciently treat the Cr(VI) in wastewater has attracted signiﬁcant attention [3–5]. Recently, it has been reported that the semiconductor-mediated photocatalytic reduction technology as one method for treating Cr(VI) has many distinct advantages, such as simple operation, high efﬁciency, and no use or release of other undesirable chemicals [6, 7]. However, the fast recombination rate of the photo-generated electron–holes or only using UV irradiation of the semiconductor photocatalysts has affected the practical applications of photocatalysis technology to large-scale Cr(VI) wastewater treatment. It is vital for the development of high performance semiconductor photocatalysts with high photocatalytic activity and stability for the Cr(VI) reduction under visible light. Semiconductor metal sulﬁdes have been widely concerned in
Research on Chemical Intermediates – Springer Journals
Published: Jul 17, 2017
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