Reduced graphene oxide-TiO2 nanocomposite with high photocatalystic activity for the degradation of rhodamine B

被引：219

作者：

Wang, Feng ^{[2
,3
]}

Zhang, Kan ^{[1
]}

机构：

[1] Hanseo Univ, Dept Adv Mat & Sci Engn, Chungnam 356706, South Korea

[2] Beijing Inst Technol, Dept Appl Phys, Beijing 100081, Peoples R China

[3] Minist Educ China, Beijing Inst Technol, Key Lab Cluster Sci, Beijing 100081, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2011年 / 345卷 / 1-2期

关键词：

Graphene oxide; Reduced graphene oxide-TiO2 nanocomposite; Rhodamine B; Hydrothermal reaction; Photocatalytic activity; Charge transfer; TIO2-GRAPHENE NANOCOMPOSITES; SINGLE-LAYER; COMPOSITE; NANOPARTICLES; REDUCTION; NANOTUBES; GRAPHITE; SHEETS;

D O I：

10.1016/j.molcata.2011.05.026

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Reduced graphene oxide-TiO2 (RGO-TiO2) nanocomposites have been successfully synthesized through a facile hydrothermal reaction with minor modification using graphene oxide (GO) and commercial P25 as starting materials in an ethanol-water solvent, followed by calcining temperature at 400 degrees C for 2 h in Ar. These nanocomposites prepared with different ratios of graphene oxide (GO) were characterized by BET surface area, X-ray diffraction (XRD), Raman spectroscopy, UV-vis diffuse reflectance spectroscopy (UV-vis DRS), Fourier transform infrared (FT-IR) spectroscopy, X-ray photoelectron spectroscopy (XPS), Transmission Electron Microscopy (TEM) and ultraviolet-visible (UV-vis) absorption spectroscopy. The RGO-TiO2 nanocomposites exhibited much higher photocatalytic activity than bare P25 for the degradation of rhodamine B (Rh.B) in an aqueous solution. The improved photocatalytic activities may be attributed to increased adsorbability for Rh.B molecular, light absorption levels in visible region and charge transfer rate in the presence of a two-dimensional graphene network. Crown Copyright (C) 2011 Published by Elsevier B.V. All rights reserved.

引用

页码：101 / 107

页数：7

共 35 条

[1] Wrapping Bacteria by Graphene Nanosheets for Isolation from Environment, Reactivation by Sonication, and Inactivation by Near-Infrared Irradiation [J].

Akhavan, O. ;

Ghaderi, E. ;

Esfandiar, A. .

JOURNAL OF PHYSICAL CHEMISTRY B, 2011, 115 (19) :6279-6288

[2] Photocatalytic reduction of graphene oxides hybridized by ZnO nanoparticles in ethanol [J].

Akhavan, O. .

CARBON, 2011, 49 (01) :11-18

[3] Photodegradation of Graphene Oxide Sheets by TiO2 Nanoparticles after a Photocatalytic Reduction [J].

Akhavan, O. ;

Abdolahad, M. ;

Esfandiar, A. ;

Mohatashamifar, M. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (30) :12955-12959

[4] Photocatalytic Reduction of Graphene Oxide Nanosheets on TiO2 Thin Film for Photoinactivation of Bacteria in Solar Light Irradiation [J].

Akhavan, O. ;

Ghaderi, E. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (47) :20214-20220

[5] Graphene Nanomesh by ZnO Nanorod Photocatalysts [J].

Akhavan, Omid .

ACS NANO, 2010, 4 (07) :4174-4180

[6] Graphene-like nano-sheets for surface acoustic wave gas sensor applications [J].

Arsat, R. ;

Breedon, M. ;

Shafiei, M. ;

Spizziri, P. G. ;

Gilje, S. ;

Kaner, R. B. ;

Kalantar-Zadeh, K. ;

Wlodarski, W. .

CHEMICAL PHYSICS LETTERS, 2009, 467 (4-6) :344-347

[7] Synthesis of Visible-Light Responsive Graphene Oxide/TiO2 Composites with p/n Heterojunction [J].

Chen, Chao ;

Cai, Weimin ;

Long, Mingce ;

Zhou, Baoxue ;

Wu, Yahui ;

Wu, Deyong ;

Feng, Yujie .

ACS NANO, 2010, 4 (11) :6425-6432

[8] Perspectives on Carbon Nanotubes and Graphene Raman Spectroscopy [J].

Dresselhaus, Mildred S. ;

Jorio, Ado ;

Hofmann, Mario ;

Dresselhaus, Gene ;

Saito, Riichiro .

NANO LETTERS, 2010, 10 (03) :751-758

[9] Heterogeneous photocatalytic degradation of organic contaminants over titanium dioxide: A review of fundamentals, progress and problems [J].

Gaya, Umar Ibrahim ;

Abdullah, Abdul Halim .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY C-PHOTOCHEMISTRY REVIEWS, 2008, 9 (01) :1-12

[10] The rise of graphene [J].

Geim, A. K. ;

Novoselov, K. S. .

NATURE MATERIALS, 2007, 6 (03) :183-191

← 1 2 3 4 →