Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 227, Issue -, Pages 470-476Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2018.01.055
Keywords
Photocatalysis; H-2 generation; Sn3O4/rGO; Heterostructure; Microwave-assisted hydrothermal
Funding
- National Key RAMP
- D Program of China [2017YFE0102700]
- National Natural Science Foundation of China [51372142, 21501090]
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The present work reports the facile synthesis of a planar heterostructure consisted of Sn3O4 nanosheet and 2-dimentional reduced graphene oxide (rGO) through microwave-assisted hydrothermal method (MHM). The planar heterostructure features with extended light absorption range and shortened charge transfer distance, and hence exhibits excellent photocatalytic activity and stability, with a hydrogen evolution rate of 20 mmol/g/h. The photoelectrochemical characterization shows that the planar heterostructure has better charge separation efficiency and interfacial charge transfer kinetics, which are also demonstrated by photoluminescence (PL) spectra and time-resolved PL decay analysis. It is found that the lifetimes of the photocarriers increased in the heterostructure. This work provides a new design of planar heterostructure for photocatalytic hydrogen generation through facile synthesis.
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