Synthesis of mesoporous β-Ga 2O 3 nanorods using PEG as template: Preparation, characterization and photocatalytic properties

Weirong Zhao; Yong Yang; Rui Hao; Feifei Liu; Yan Wang; Min Tan; Jing Tang; Daqing Ren; Dongye Zhao

doi:10.1016/j.jhazmat.2011.06.073

Synthesis of mesoporous β-Ga ₂O ₃ nanorods using PEG as template: Preparation, characterization and photocatalytic properties

Weirong Zhao, Yong Yang, Rui Hao, Feifei Liu, Yan Wang, Min Tan, Jing Tang, Daqing Ren, Dongye Zhao

Center for Drug Design

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

Mesoporous wide bandgap semiconductors offer high photocatalytic oxidation and mineralization activities. In this study, mesoporous β-Ga ₂O ₃ diamond nanorods with 200-300nm in diameter and 1.0-1.2μm in length were synthesized via a urea-based hydrothermal method using polyethylene glycol (PEG) as template agent. The UV photocatalytic oxidation activity of β-Ga ₂O ₃ for gaseous toluene was evaluated, and 7 kinds of intermediates were monitored online by a proton transfer reaction mass spectrometry. Photoluminescence spectra manifested that the dosage and molecular weight of PEG are crucial for formation of vacancies and photocatalytic oxidation activities. A PEG-assisted hydrothermal formation mechanism of mesoporous β-Ga ₂O ₃ diamond nanorods was proposed. Based on the health risk influence index (η) of the intermediates, the calculated health risks revealed that the β-Ga ₂O ₃ nanorods with a η value of 9.6 are much safer than TiO ₂ (η=17.6).

Original language	English (US)
Pages (from-to)	1548-1554
Number of pages	7
Journal	Journal of Hazardous Materials
Volume	192
Issue number	3
DOIs	https://doi.org/10.1016/j.jhazmat.2011.06.073
State	Published - Sep 15 2011

Bibliographical note

Funding Information:
This research was partially funded by the Zhejiang Provincial Natural Science Foundation of China (Grant No. Y5090149 ), the Chinese Key Technology Research and Development Program of the Eleventh Five-Year Plan (Grant No. 2006BAJ02A08 ), and the National Technology Research and Development Program (“863” Program) of China (Grant No. 2007AA061402 ).

Keywords

Indoor air
Photocatalyst
Toluene
Toxicity
β-Ga O

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title = "Synthesis of mesoporous β-Ga 2O 3 nanorods using PEG as template: Preparation, characterization and photocatalytic properties",

abstract = "Mesoporous wide bandgap semiconductors offer high photocatalytic oxidation and mineralization activities. In this study, mesoporous β-Ga 2O 3 diamond nanorods with 200-300nm in diameter and 1.0-1.2μm in length were synthesized via a urea-based hydrothermal method using polyethylene glycol (PEG) as template agent. The UV photocatalytic oxidation activity of β-Ga 2O 3 for gaseous toluene was evaluated, and 7 kinds of intermediates were monitored online by a proton transfer reaction mass spectrometry. Photoluminescence spectra manifested that the dosage and molecular weight of PEG are crucial for formation of vacancies and photocatalytic oxidation activities. A PEG-assisted hydrothermal formation mechanism of mesoporous β-Ga 2O 3 diamond nanorods was proposed. Based on the health risk influence index (η) of the intermediates, the calculated health risks revealed that the β-Ga 2O 3 nanorods with a η value of 9.6 are much safer than TiO 2 (η=17.6).",

keywords = "Indoor air, Photocatalyst, Toluene, Toxicity, β-Ga O",

author = "Weirong Zhao and Yong Yang and Rui Hao and Feifei Liu and Yan Wang and Min Tan and Jing Tang and Daqing Ren and Dongye Zhao",

note = "Funding Information: This research was partially funded by the Zhejiang Provincial Natural Science Foundation of China (Grant No. Y5090149 ), the Chinese Key Technology Research and Development Program of the Eleventh Five-Year Plan (Grant No. 2006BAJ02A08 ), and the National Technology Research and Development Program (“863” Program) of China (Grant No. 2007AA061402 ). ",

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AU - Zhao, Weirong

AU - Yang, Yong

AU - Hao, Rui

AU - Liu, Feifei

AU - Wang, Yan

AU - Tan, Min

AU - Tang, Jing

AU - Ren, Daqing

AU - Zhao, Dongye

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N2 - Mesoporous wide bandgap semiconductors offer high photocatalytic oxidation and mineralization activities. In this study, mesoporous β-Ga 2O 3 diamond nanorods with 200-300nm in diameter and 1.0-1.2μm in length were synthesized via a urea-based hydrothermal method using polyethylene glycol (PEG) as template agent. The UV photocatalytic oxidation activity of β-Ga 2O 3 for gaseous toluene was evaluated, and 7 kinds of intermediates were monitored online by a proton transfer reaction mass spectrometry. Photoluminescence spectra manifested that the dosage and molecular weight of PEG are crucial for formation of vacancies and photocatalytic oxidation activities. A PEG-assisted hydrothermal formation mechanism of mesoporous β-Ga 2O 3 diamond nanorods was proposed. Based on the health risk influence index (η) of the intermediates, the calculated health risks revealed that the β-Ga 2O 3 nanorods with a η value of 9.6 are much safer than TiO 2 (η=17.6).

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