Journal
MATERIALS LETTERS
Volume 234, Issue -, Pages 361-363Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2018.09.142
Keywords
Nanocrystalline materials; Semiconductors; Solar energy materials
Funding
- Natural Science Foundation of Jiangsu Province, China [BK20171282]
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This communication reports a viable low temperature method for scalable production of SnS2 nanomaterials with promising applications in visible-light photocatalysis and photovoltaics. SnS2 nanoflakes were synthesized via heating the mixture of NH4Cl, S and Sn powders in air at 250 degrees C for 2 h, followed by a washing process. X-ray diffraction, scanning electron microscope, and nitrogen adsorption-desorption isotherms characterization indicated the formation of pure SnS2 nanoflakes with a specific surface area of 32.081 m(2)/g. Comparative synthesis experiments manifested that NH4Cl played an indispensable role in our low temperature synthesis of SnS2. UV-vis absorbance spectrum demonstrated that the assynthesized SnS2 nanoflakes had much higher absorption of visible-light than hydrothermally synthesized SnS2 and thermally exfoliated g-C3N4. Transient photocurrent measurements and photocatalytic tests indicated that our product had not only exceptionally larger photocurrent, but also significantly higher photocatalytic activity than hydrothermally synthesized SnS2 and thermally exfoliated g-C3N4 in the reduction of Cr(VI) under visible-light (lambda > 420 nm) irradiation. (C) 2018 Elsevier B.V. All rights reserved.
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