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Title: Single-step One-pot Synthesis of TiO2 Nanosheets Doped with Sulfur on Reduced Graphene Oxide with Enhanced Photocatalytic Activity

Abstract

A hybrid photocatalyst based on anatase TiO2 was designed by doping TiO2 with sulfur and incorporating reduced graphene oxide (TiO2-S/rGO hybrid), with an aim to narrow the band gap to potentially make use of visible light and decrease the recombination of excitons, respectively. This TiO2-S/rGO hybrid was successfully synthesized using a one-pot hydrothermal method via single-step reaction. The structure and morphology of the TiO2-S/rGO hybrid catalyst was carefully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Its photocatalytic reactivity was evaluated by the degradation of methyl blue. The results showed that both the doping of sulfur and the introduction of rGO worked as designed, and the TiO2-S/rGO hybrid exhibited high photocatalytic activity under simulated sunlight. Finally, considering both the facile and scalable reaction to synthesize TiO2-S/rGO hybrid, and its excellent photocatalytic performance, such TiO2-S/rGO hybrids are expect to find practical applications in environmental and energy sectors.

Authors:
 [1];  [2];  [2];  [3];  [4];  [5];  [5];  [6];  [7]
  1. South China Univ. of Technology (SCUT), Guangzhou (China). School of Chemistry and Chemical Engineering; Univ. of Connecticut, Storrs, CT (United States). Inst. of Materials Science
  2. Univ. of Connecticut, Storrs, CT (United States). Inst. of Materials Science
  3. Univ. of Connecticut, Storrs, CT (United States). Dept. of Chemistry
  4. Univ. of Connecticut, Storrs, CT (United States). Inst. of Materials Science; Univ. of Connecticut, Storrs, CT (United States). Dept. of Chemistry
  5. Chinese Academy of Sciences (CAS), Shanghai (China). Shanghai Inst. of Microsystem and Information Technology
  6. South China Univ. of Technology (SCUT), Guangzhou (China). School of Chemistry and Chemical Engineering
  7. Univ. of Connecticut, Storrs, CT (United States). Inst. of Materials Science; Univ. of Connecticut, Storrs, CT (United States). Dept. of Chemical and Biomolecular Engineering
Publication Date:
Research Org.:
Univ. of Connecticut, Storrs, CT (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); US Air Force Office of Scientific Research (AFOSR); China Scholarship Council
OSTI Identifier:
1368381
Grant/Contract Number:  
FG02-86ER13622
Resource Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Wang, Weilin, Wang, Zhaofeng, Liu, Jingjing, Luo, Zhu, Suib, Steven L., He, Peng, Ding, Guqiao, Zhang, Zhengguo, and Sun, Luyi. Single-step One-pot Synthesis of TiO2 Nanosheets Doped with Sulfur on Reduced Graphene Oxide with Enhanced Photocatalytic Activity. United States: N. p., 2017. Web. doi:10.1038/srep46610.
Wang, Weilin, Wang, Zhaofeng, Liu, Jingjing, Luo, Zhu, Suib, Steven L., He, Peng, Ding, Guqiao, Zhang, Zhengguo, & Sun, Luyi. Single-step One-pot Synthesis of TiO2 Nanosheets Doped with Sulfur on Reduced Graphene Oxide with Enhanced Photocatalytic Activity. United States. doi:10.1038/srep46610.
Wang, Weilin, Wang, Zhaofeng, Liu, Jingjing, Luo, Zhu, Suib, Steven L., He, Peng, Ding, Guqiao, Zhang, Zhengguo, and Sun, Luyi. Fri . "Single-step One-pot Synthesis of TiO2 Nanosheets Doped with Sulfur on Reduced Graphene Oxide with Enhanced Photocatalytic Activity". United States. doi:10.1038/srep46610. https://www.osti.gov/servlets/purl/1368381.
@article{osti_1368381,
title = {Single-step One-pot Synthesis of TiO2 Nanosheets Doped with Sulfur on Reduced Graphene Oxide with Enhanced Photocatalytic Activity},
author = {Wang, Weilin and Wang, Zhaofeng and Liu, Jingjing and Luo, Zhu and Suib, Steven L. and He, Peng and Ding, Guqiao and Zhang, Zhengguo and Sun, Luyi},
abstractNote = {A hybrid photocatalyst based on anatase TiO2 was designed by doping TiO2 with sulfur and incorporating reduced graphene oxide (TiO2-S/rGO hybrid), with an aim to narrow the band gap to potentially make use of visible light and decrease the recombination of excitons, respectively. This TiO2-S/rGO hybrid was successfully synthesized using a one-pot hydrothermal method via single-step reaction. The structure and morphology of the TiO2-S/rGO hybrid catalyst was carefully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). Its photocatalytic reactivity was evaluated by the degradation of methyl blue. The results showed that both the doping of sulfur and the introduction of rGO worked as designed, and the TiO2-S/rGO hybrid exhibited high photocatalytic activity under simulated sunlight. Finally, considering both the facile and scalable reaction to synthesize TiO2-S/rGO hybrid, and its excellent photocatalytic performance, such TiO2-S/rGO hybrids are expect to find practical applications in environmental and energy sectors.},
doi = {10.1038/srep46610},
journal = {Scientific Reports},
number = ,
volume = 7,
place = {United States},
year = {2017},
month = {4}
}

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