Ag3PO4/reduced graphite oxide sheets nanocomposites with highly enhanced visible light photocatalytic activity and stability

被引：194

作者：

Dong, Pengyu ^{[1
]}

Wang, Yuhua ^{[1
]}

Cao, Baocheng ^{[1
]}

Xin, Shuangyu ^{[1
]}

Guo, Linna ^{[1
]}

Zhang, Jia ^{[1
]}

Li, Fenghua ^{[1
]}

机构：

[1] Lanzhou Univ, Sch Phys Sci & Technol, Dept Mat Sci, Lanzhou 730000, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2013年 / 132卷

基金：

美国国家科学基金会;

关键词：

Reduced graphite oxide sheets; Silver orthophosphate; Nanocomposite; Photocatalysis; Stability; HIGH-PERFORMANCE PHOTOCATALYST; AG3PO4; SUB-MICROCRYSTALS; TIO2-GRAPHENE NANOCOMPOSITES; SOLVOTHERMAL REDUCTION; NANOCRYSTALLINE TIO2; GRAPHENE NANOSHEETS; METHYL-ORANGE; DEGRADATION; SEMICONDUCTOR; SPECTROSCOPY;

D O I：

10.1016/j.apcatb.2012.11.022

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：

A series of Ag3PO4 and reduced graphite oxide sheets (RGOs) nanocomposites have been fabricated by a facile chemical precipitation approach in N,N-dimethylformamide (DMF) solvent without any hard/soft templates. The as-prepared Ag3PO4/RGOs composites were characterized by X-ray diffraction pattern (XRD), Fourier transform infrared spectra (FTIR), Raman spectroscopy, field emission scanning electron microscopy (SEM), transmission electron microscopy (TEM), and ultraviolet-visible (UV-vis) diffuse reflectance spectroscopy (DRS). It is found that the nano-sized Ag3PO4 particles are deposited on the surfaces of RGOs. The Ag3PO4/RGOs nanocomposites exhibit enhanced photocatalytic activity for the photodegradation of organic methyl orange (MO) and methylene blue (MB) under visible light irradiation. The photocatalytic rate of Ag3PO4/2.1 wt% RGOs nanocomposite is 3 and 2 times of that of pure Ag3PO4 nanoparticles for the degradation of MO and MB, respectively. Furthermore, the photocatalytic and structural stability of Ag3PO4 is greatly enhanced. It is suggested that RGOs can be used as protective coatings that partially inhibit the photocorrosion of Ag3PO4. Overall, this work could provide a new approach to the improvement not only in the photocatalytic activity but also the stability of photocorrosion catalysts. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：45 / 53

页数：9

共 64 条

[1] The study of the partitioning mechanism of methyl orange in an aqueous two-phase system [J].

Akama, E ;

Tong, AJ ;

Ito, M ;

Tanaka, S .

TALANTA, 1999, 48 (05) :1133-1137

[2] Photocatalytic degradation of 2,4,6-trichlorophenol using lanthanum doped ZnO in aqueous suspension [J].

Anandan, S. ;

Vinu, A. ;

Mori, T. ;

Gokulakrishnan, N. ;

Srinivasu, P. ;

Murugesan, V. ;

Ariga, K. .

CATALYSIS COMMUNICATIONS, 2007, 8 (09) :1377-1382

[3] The visible light induced photocatalytic activity of tungsten trioxide powders [J].

Bamwenda, GR ;

Arakawa, H .

APPLIED CATALYSIS A-GENERAL, 2001, 210 (1-2) :181-191

[4] Chemical Modification of Epitaxial Graphene: Spontaneous Grafting of Aryl Groups [J].

Bekyarova, Elena ;

Itkis, Mikhail E. ;

Ramesh, Palanisamy ;

Berger, Claire ;

Sprinkle, Michael ;

de Heer, Walt A. ;

Haddon, Robert C. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (04) :1336-+

[5] Photocatalytic and photoelectric properties of cubic Ag3PO4 sub-microcrystals with sharp corners and edges [J].

Bi, Yingpu ;

Hu, Hongyan ;

Ouyang, Shuxin ;

Lu, Gongxuan ;

Cao, Junyu ;

Ye, Jinhua .

CHEMICAL COMMUNICATIONS, 2012, 48 (31) :3748-3750

[6] Facile synthesis of rhombic dodecahedral AgX/Ag3PO4 (X = Cl, Br, I) heterocrystals with enhanced photocatalytic properties and stabilities [J].

Bi, Yingpu ;

Ouyang, Shuxin ;

Cao, Junyu ;

Ye, Jinhua .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2011, 13 (21) :10071-10075

[7] Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties [J].

Bi, Yingpu ;

Ouyang, Shuxin ;

Umezawa, Naoto ;

Cao, Junyu ;

Ye, Jinhua .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (17) :6490-6492

[8] Large-scale synthesis of uniform silver orthophosphate colloidal nanocrystals exhibiting high visible light photocatalytic activity [J].

Cao-Thang Dinh ;

Thanh-Dinh Nguyen ;

Kleitz, Freddy ;

Trong-On Do .

CHEMICAL COMMUNICATIONS, 2011, 47 (27) :7797-7799

[9] A route to high surface area, porosity and inclusion of large molecules in crystals [J].

Chae, HK ;

Siberio-Pérez, DY ;

Kim, J ;

Go, Y ;

Eddaoudi, M ;

Matzger, AJ ;

O'Keeffe, M ;

Yaghi, OM .

NATURE, 2004, 427 (6974) :523-527

[10] Substrate-interface interactions between carbon nanotubes and the supporting substrate [J].

Czerw, R ;

Foley, B ;

Tekleab, D ;

Rubio, A ;

Ajayan, PM ;

Carroll, DL .

PHYSICAL REVIEW B, 2002, 66 (03) :334081-334084

← 1 2 3 4 5 6 7 →