4.7 Article

Heterostructured SnS2/SnO2 nanotubes with enhanced charge separation and excellent photocatalytic hydrogen production

Journal

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 43, Issue 31, Pages 14121-14129

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2018.05.130

Keywords

SnO2; SnS2; Heterostructure; Photocatalytic hydrogen evolution

Funding

  1. National Natural Science Foundation of China [51772249, 21603175, 51521061]
  2. Innovation Foundation for Doctor Dissertation of Northwestern Polytechnical University [CX201807]
  3. Fundamental Research Funds for the Central Universities [G2017KY0308]
  4. Key Laboratory of New Ceramic and Fine Processing (Tsinghua University) [SKLD17KM02]
  5. Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [123-QZ-2015]
  6. Program of Introducing Talents of Discipline to Universities [B08040]
  7. State Key Laboratory of Control and Simulation of Power System and Generation Equipment (Tsinghua University) [SKLD17KM02]

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SnO2, a promising candidate for photocatalytic water splitting, displays poor activity due to insufficient light utilization and rapid electron-hole recombination of charge carriers. Herein, one-dimensional heterostructures of SnO2/SnS2 nanotubes was designed and synthesized through a facile electrospinning followed by vulcanized method. The unique heterostructured SnO2/SnS2 could simultaneously promote photocarrier transport and suppress charge recombination through the uniquely coupled SnO2/SnS2 heterogeneous interface. Additionally, the optimized type-II heterostructure could also improve light absorption and weak the barrier of photocharge transfer. As a result, the SnO2/SnS2 exhibited excellent photocatalytic H-2 evolution performance under simulated light irradiation with high H-2 production rate of 50 mu mol h(-1) without the use of any noble metal co-catalyst, which is 4.2 times higher than that of pure SnO2 under the same condition. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

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