In situ growth of TiO2 nanowires on reduced graphene oxide (rGO) was achieved using a facile solution-based reaction at a relatively low temperature of 80 degrees C and in an open atmosphere, followed by a final calcination in air at 550 degrees C. The additive of GO into the Ti-H2O2 reactants led to a much reduced rutile/anatase ratio in the resultant TiO2 nanowires. The TiO2/rGO hybrid, which contained ca. 0.18 wt% rGO, exhibited a reduced band gap of 2.83 eV. The reaction rate constant was 5.5 times that of the pure TiO2 nanowires. The enhanced photocatalytic efficiency was attributed to the appropriate anatase/rutile mixture, narrowed band gap, and increasing specific surface area. The present work provides a low temperature one-pot synthesis of one-dimensional TiO2 nanowires on rGO surfaces with enhanced photocatalytic performance, which may find other applications in fields of solar cells, energy storage, and sensors.
机构:University of Electronic Science and Technology of China (UESTC),State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information
Kang Zhao
Zhiming Wu
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机构:University of Electronic Science and Technology of China (UESTC),State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information
Zhiming Wu
Rong Tang
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机构:University of Electronic Science and Technology of China (UESTC),State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information
Rong Tang
Yadong Jiang
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机构:University of Electronic Science and Technology of China (UESTC),State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information
Yadong Jiang
Yixin Lu
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机构:University of Electronic Science and Technology of China (UESTC),State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information
Yixin Lu
[J].
Research on Chemical Intermediates,
2015,
41
: 4405
-
4411
机构:
Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Yu, Jiaguo
Shi, Lei
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机构:
Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China