Structurally controlled ZnO/TiO2 heterostructures as efficient photocatalysts for hydrogen generation from water without noble metals: The role of microporous amorphous/crystalline composite structure

Siyao Guo, Song Han, Haifeng Mao, Shimiao Dong, Congcong Wu, Lichao Jia, Bo Chi, Jian Pu, Jian Li

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

A versatile synthetic method, which is based on a low-temperature hydrothermal technique, is developed for the fabrication of a microporous ZnO/TiO2 composite catalyst with different structures (e.g., amorphous, amorphous/crystalline and crystalline). In particular, a novel microporous ZnO/TiO2 composite with amorphous/crystalline structure is obtained with a 3/1 M ratio of Ti/Zn. This novel ZnO/TiO2 composite heterostructure not only has a large specific surface area (311.9 m2 g-1) but also exhibits outstanding performance during solar water splitting reactions to generate hydrogen without a noble metal co-catalyst. Based on our in-depth mechanistic analysis, the synergistic effect between the amorphous ZnO and crystalline TiO2 is responsible for the enhanced performance of this material.

Original languageEnglish (US)
Pages (from-to)979-985
Number of pages7
JournalJournal of Power Sources
Volume245
DOIs
StatePublished - Jan 1 2014

Fingerprint

composite structures
Photocatalysts
Precious metals
Composite structures
noble metals
Heterojunctions
Hydrogen
Crystalline materials
composite materials
Water
hydrogen
water
catalysts
Composite materials
water splitting
Catalysts
Specific surface area
fabrication
Fabrication
Temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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abstract = "A versatile synthetic method, which is based on a low-temperature hydrothermal technique, is developed for the fabrication of a microporous ZnO/TiO2 composite catalyst with different structures (e.g., amorphous, amorphous/crystalline and crystalline). In particular, a novel microporous ZnO/TiO2 composite with amorphous/crystalline structure is obtained with a 3/1 M ratio of Ti/Zn. This novel ZnO/TiO2 composite heterostructure not only has a large specific surface area (311.9 m2 g-1) but also exhibits outstanding performance during solar water splitting reactions to generate hydrogen without a noble metal co-catalyst. Based on our in-depth mechanistic analysis, the synergistic effect between the amorphous ZnO and crystalline TiO2 is responsible for the enhanced performance of this material.",
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Structurally controlled ZnO/TiO2 heterostructures as efficient photocatalysts for hydrogen generation from water without noble metals : The role of microporous amorphous/crystalline composite structure. / Guo, Siyao; Han, Song; Mao, Haifeng; Dong, Shimiao; Wu, Congcong; Jia, Lichao; Chi, Bo; Pu, Jian; Li, Jian.

In: Journal of Power Sources, Vol. 245, 01.01.2014, p. 979-985.

Research output: Contribution to journalArticle

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AU - Guo, Siyao

AU - Han, Song

AU - Mao, Haifeng

AU - Dong, Shimiao

AU - Wu, Congcong

AU - Jia, Lichao

AU - Chi, Bo

AU - Pu, Jian

AU - Li, Jian

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AB - A versatile synthetic method, which is based on a low-temperature hydrothermal technique, is developed for the fabrication of a microporous ZnO/TiO2 composite catalyst with different structures (e.g., amorphous, amorphous/crystalline and crystalline). In particular, a novel microporous ZnO/TiO2 composite with amorphous/crystalline structure is obtained with a 3/1 M ratio of Ti/Zn. This novel ZnO/TiO2 composite heterostructure not only has a large specific surface area (311.9 m2 g-1) but also exhibits outstanding performance during solar water splitting reactions to generate hydrogen without a noble metal co-catalyst. Based on our in-depth mechanistic analysis, the synergistic effect between the amorphous ZnO and crystalline TiO2 is responsible for the enhanced performance of this material.

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