Influence of interface combination of RGO-photosensitized SnO                         2                         @RGO core-shell structures on their photocatalytic performance

Hao Shen; Xiaoru Zhao; Libing Duan; Ruidi Liu; Hongjing Wu; Tian Hou; Xianwu Jiang; Haodi Gao

doi:10.1016/j.apsusc.2016.06.031

Influence of interface combination of RGO-photosensitized SnO ₂ @RGO core-shell structures on their photocatalytic performance

Hao Shen, Xiaoru Zhao, Libing Duan, Ruidi Liu, Hongjing Wu, Tian Hou, Xianwu Jiang, Haodi Gao

School of Physical Science and Technology

Northwestern Polytechnical University Xian

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

82 Scopus citations

Abstract

SnO ₂ @reduced graphene oxide (RGO) core-shell structures were successfully synthesized by two different strategies (electrostatic interaction method and direct chemical bonding reaction method). The investigation of morphologies and microstructures showed that RGO was wrapped tightly on the surface of SnO ₂ microspheres with different interface combinations, i.e., electrostatic interaction and chemical bonding. Raman spectroscopy and photoluminescence (PL) spectra demonstrated that graphene as a photosensitizer could transfer photogenerated electrons to the conduction band (CB) of SnO ₂ and receive holes from the valence band (VB) of SnO ₂ , resulting in the separation of photogenerated electron-hole pairs. The photocatalytic activity of the synthesized composites was evaluated by the photodegradation of methyl orange (MO) under ultraviolet (UV) light irradiation. It was found that SnO ₂ @RGO with chemical bonding interface combination exhibited higher photodegradation rate (k = 0.038 min ⁻¹ ) than those with electrostatic interaction interface combination (k = 0.021 min ⁻¹ ) and pure SnO ₂ (k = 0.010 min ⁻¹ ). The enhanced photocatalytic activity could be attributed to the photosensitization of RGO and the intimate interface combination between SnO ₂ and RGO.

Original language	English
Pages (from-to)	627-634
Number of pages	8
Journal	Applied Surface Science
Volume	391
DOIs	https://doi.org/10.1016/j.apsusc.2016.06.031
State	Published - 1 Jan 2017

Keywords

Graphene
Interface combination
Photocatalytic performance
SnO

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10.1016/j.apsusc.2016.06.031

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Shen, H., Zhao, X., Duan, L., Liu, R., Wu, H., Hou, T., Jiang, X., & Gao, H. (2017). Influence of interface combination of RGO-photosensitized SnO ₂ @RGO core-shell structures on their photocatalytic performance Applied Surface Science, 391, 627-634. https://doi.org/10.1016/j.apsusc.2016.06.031

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title = " Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance ",

abstract = " SnO 2 @reduced graphene oxide (RGO) core-shell structures were successfully synthesized by two different strategies (electrostatic interaction method and direct chemical bonding reaction method). The investigation of morphologies and microstructures showed that RGO was wrapped tightly on the surface of SnO 2 microspheres with different interface combinations, i.e., electrostatic interaction and chemical bonding. Raman spectroscopy and photoluminescence (PL) spectra demonstrated that graphene as a photosensitizer could transfer photogenerated electrons to the conduction band (CB) of SnO 2 and receive holes from the valence band (VB) of SnO 2 , resulting in the separation of photogenerated electron-hole pairs. The photocatalytic activity of the synthesized composites was evaluated by the photodegradation of methyl orange (MO) under ultraviolet (UV) light irradiation. It was found that SnO 2 @RGO with chemical bonding interface combination exhibited higher photodegradation rate (k = 0.038 min −1 ) than those with electrostatic interaction interface combination (k = 0.021 min −1 ) and pure SnO 2 (k = 0.010 min −1 ). The enhanced photocatalytic activity could be attributed to the photosensitization of RGO and the intimate interface combination between SnO 2 and RGO.",

keywords = "Graphene, Interface combination, Photocatalytic performance, SnO",

author = "Hao Shen and Xiaoru Zhao and Libing Duan and Ruidi Liu and Hongjing Wu and Tian Hou and Xianwu Jiang and Haodi Gao",

note = "Publisher Copyright: {\textcopyright} 2016 Elsevier B.V.",

year = "2017",

month = jan,

day = "1",

doi = "10.1016/j.apsusc.2016.06.031",

language = "英语",

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Shen, H, Zhao, X, Duan, L, Liu, R, Wu, H, Hou, T, Jiang, X & Gao, H 2017, ' Influence of interface combination of RGO-photosensitized SnO ₂ @RGO core-shell structures on their photocatalytic performance ', Applied Surface Science, vol. 391, pp. 627-634. https://doi.org/10.1016/j.apsusc.2016.06.031

Influence of interface combination of RGO-photosensitized SnO ₂ @RGO core-shell structures on their photocatalytic performance . / Shen, Hao; Zhao, Xiaoru; Duan, Libing et al.
In: Applied Surface Science, Vol. 391, 01.01.2017, p. 627-634.

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

TY - JOUR

T1 - Influence of interface combination of RGO-photosensitized SnO 2 @RGO core-shell structures on their photocatalytic performance

AU - Shen, Hao

AU - Zhao, Xiaoru

AU - Duan, Libing

AU - Liu, Ruidi

AU - Wu, Hongjing

AU - Hou, Tian

AU - Jiang, Xianwu

AU - Gao, Haodi

PY - 2017/1/1

Y1 - 2017/1/1

N2 - SnO 2 @reduced graphene oxide (RGO) core-shell structures were successfully synthesized by two different strategies (electrostatic interaction method and direct chemical bonding reaction method). The investigation of morphologies and microstructures showed that RGO was wrapped tightly on the surface of SnO 2 microspheres with different interface combinations, i.e., electrostatic interaction and chemical bonding. Raman spectroscopy and photoluminescence (PL) spectra demonstrated that graphene as a photosensitizer could transfer photogenerated electrons to the conduction band (CB) of SnO 2 and receive holes from the valence band (VB) of SnO 2 , resulting in the separation of photogenerated electron-hole pairs. The photocatalytic activity of the synthesized composites was evaluated by the photodegradation of methyl orange (MO) under ultraviolet (UV) light irradiation. It was found that SnO 2 @RGO with chemical bonding interface combination exhibited higher photodegradation rate (k = 0.038 min −1 ) than those with electrostatic interaction interface combination (k = 0.021 min −1 ) and pure SnO 2 (k = 0.010 min −1 ). The enhanced photocatalytic activity could be attributed to the photosensitization of RGO and the intimate interface combination between SnO 2 and RGO.

AB - SnO 2 @reduced graphene oxide (RGO) core-shell structures were successfully synthesized by two different strategies (electrostatic interaction method and direct chemical bonding reaction method). The investigation of morphologies and microstructures showed that RGO was wrapped tightly on the surface of SnO 2 microspheres with different interface combinations, i.e., electrostatic interaction and chemical bonding. Raman spectroscopy and photoluminescence (PL) spectra demonstrated that graphene as a photosensitizer could transfer photogenerated electrons to the conduction band (CB) of SnO 2 and receive holes from the valence band (VB) of SnO 2 , resulting in the separation of photogenerated electron-hole pairs. The photocatalytic activity of the synthesized composites was evaluated by the photodegradation of methyl orange (MO) under ultraviolet (UV) light irradiation. It was found that SnO 2 @RGO with chemical bonding interface combination exhibited higher photodegradation rate (k = 0.038 min −1 ) than those with electrostatic interaction interface combination (k = 0.021 min −1 ) and pure SnO 2 (k = 0.010 min −1 ). The enhanced photocatalytic activity could be attributed to the photosensitization of RGO and the intimate interface combination between SnO 2 and RGO.

KW - Graphene

KW - Interface combination

KW - Photocatalytic performance

KW - SnO

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DO - 10.1016/j.apsusc.2016.06.031

M3 - 文章

AN - SCOPUS:84994297172

SN - 0169-4332

VL - 391

SP - 627

EP - 634

JO - Applied Surface Science

JF - Applied Surface Science

ER -

Influence of interface combination of RGO-photosensitized SnO ₂ @RGO core-shell structures on their photocatalytic performance

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