TY - JOUR
T1 - Enhanced photocatalytic activities of TiO2-reduced graphene oxide nanocomposites controlled by Ti–O–C interfacial chemical bond
AU - Chen, Ying
AU - Gao, Hongyan
AU - Xiang, Junjie
AU - Dong, Xinju
AU - Cao, Yan
N1 - Publisher Copyright:
© 2017 Elsevier Ltd
PY - 2018/3
Y1 - 2018/3
N2 - In this study, a hydrothermal-prepared TiO2-RG nanocomposites series exhibited excellent photocatalytic activities, of which the results can be largely influenced by a Ti–O–C interfacial chemical bond between TiO2 nanoparticles and RG nanosheets. A stirring TiO2-RG sample was prepared as contrast analysis using the same wet process except for heating. The characteristics of the composites were tested by X-ray diffraction (XRD), Raman, FT-IR, Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) analysis. The photocatalytic properties were verified by UV–vis diffuse reflectance spectra (DRS) testing as well as degrading Rhodamine B (RhB). Our research results show that the better Ti–O–C interfacial chemical bond was formed, the narrower band gap of the nanocomposite was then obtained. The best hydrothermal synthesizing temperature was found out as 120 °C. The TiO2-RG nanocomposite, as inexpensive, nontoxic and highly photo-catalytically active, may let it have a potential use in various photocatalytic applications.
AB - In this study, a hydrothermal-prepared TiO2-RG nanocomposites series exhibited excellent photocatalytic activities, of which the results can be largely influenced by a Ti–O–C interfacial chemical bond between TiO2 nanoparticles and RG nanosheets. A stirring TiO2-RG sample was prepared as contrast analysis using the same wet process except for heating. The characteristics of the composites were tested by X-ray diffraction (XRD), Raman, FT-IR, Differential scanning calorimetry (DSC), Thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) analysis. The photocatalytic properties were verified by UV–vis diffuse reflectance spectra (DRS) testing as well as degrading Rhodamine B (RhB). Our research results show that the better Ti–O–C interfacial chemical bond was formed, the narrower band gap of the nanocomposite was then obtained. The best hydrothermal synthesizing temperature was found out as 120 °C. The TiO2-RG nanocomposite, as inexpensive, nontoxic and highly photo-catalytically active, may let it have a potential use in various photocatalytic applications.
KW - Graphene
KW - Interfacial chemical bond
KW - Photocatalyst
KW - TiO
UR - http://www.scopus.com/inward/record.url?scp=85032824373&partnerID=8YFLogxK
U2 - 10.1016/j.materresbull.2017.08.054
DO - 10.1016/j.materresbull.2017.08.054
M3 - Article
AN - SCOPUS:85032824373
SN - 0025-5408
VL - 99
SP - 29
EP - 36
JO - Materials Research Bulletin
JF - Materials Research Bulletin
ER -