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|Title:||Modified stannous sulfide nanoparticles with metal-organic framework : toward efficient and enhanced photocatalytic reduction of chromium (VI) under visible light||Authors:||Xia, Qi
|Keywords:||Engineering::Chemical engineering||Issue Date:||2018||Source:||Xia, Q., Huang, B., Yuan, X., Wang, H., Wu, Z., Jiang, L., . . . Wang, H. (2018). Modified stannous sulfide nanoparticles with metal-organic framework : toward efficient and enhanced photocatalytic reduction of chromium (VI) under visible light. Journal of colloid and interface science, 530, 481-492. doi:10.1016/j.jcis.2018.05.015||Journal:||Journal of colloid and interface science||Abstract:||Novel metal-organic framework/stannous sulfide (MIL-53(Fe)/SnS) nanocomposite photocatalysts were successfully synthesized by a one-step deposition process. The structure, composition and optical properties of the MIL-53(Fe)/SnS composite were systematically characterized by the X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, transmission electron microscopy, Fourier transform-infrared spectroscopy, UV-vis diffuse reflection spectroscopy and photoluminescence analysis. The photocatalytic performance of MIL-53(Fe)/SnS composite has been evaluated in the reduction of chromium (VI) under visible-light irradiation. Compared with pure MIL-53(Fe) and SnS, the MIL-53(Fe)/SnS composite exhibited enhanced photoreduction capability of chromium (VI) due to the strengthened absorption in the visible region, higher electron-hole separation rate and larger specific area. The MIL-53(Fe)/SnS composite with MIL-53(Fe) adding of 15 mg displayed optimal chromium (VI) reduction rate of 0.01878 min-1, which was about 7.5 and 5.2 times than pure MIL-53(Fe) and SnS, respectively. The active species superoxide radical (O2-), electron(e-) and hole(h+) are essential toward chromium (VI) reduction. Lastly, a possible photocatalytic mechanism is proposed.||URI:||https://hdl.handle.net/10356/142546||ISSN:||0021-9797||DOI:||10.1016/j.jcis.2018.05.015||Rights:||© 2018 Elsevier Inc. All rights reserved.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SCBE Journal Articles|
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