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Phase and Defect Engineering of MoS 2 Stabilized in Periodic TiO 2 Nanoporous Film for Enhanced Solar Water Splitting
Author(s) -
Guo Limin,
Zhong Caifu,
Shi Li,
Ju Licheng,
Wang Xiaohui,
Yang Daquan,
Bi Ke,
Hao Yanan,
Yang Yang
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201801403
Subject(s) - materials science , water splitting , nanoporous , phase (matter) , exfoliation joint , hydrothermal circulation , optoelectronics , surface plasmon resonance , nanotechnology , chemical engineering , nanoparticle , photocatalysis , catalysis , graphene , biochemistry , chemistry , organic chemistry , engineering
Phase and defect engineering of the heterostructured MoS 2 @TiO 2 nanoporous film is investigated to achieve a broad solar spectrum light absorption and high solar water splitting efficiency. The phase transition from the semiconducting 2H‐MoS 2 to the metallic 1T‐MoS 2 is achieved by a hydrothermal exfoliation treatment. Experimental studies elucidate that the solar water splitting activity is greatly improved by forming 1T‐MoS 2 along with increasing S‐vacancies because of the significantly enhanced surface plasmon resonance. The mixed‐phase MoS 2 @TiO 2 film shows a high H 2 yield rate of 308 µmol h −1 cm −2 and long‐term durability for 30 h, which is superior to the state‐of‐the‐art catalysts for solar water splitting. This study offers a universal and efficient avenue to rationalize the plasmonic catalysts for solar water splitting and other energy and environmental applications.