One-pot synthesis, photoluminescence, and photocatalysis of Ag/ZnO composites

被引：147

作者：

Zhang, Yunyan ^{[1
]}

Mu, Jin ^{[1
]}

机构：

[1] E China Univ Sci & Technol, Dept Chem, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2007年 / 309卷 / 02期

关键词：

Ag/ZnO composites; hydrothermal synthesis; UV emission; photocatalytic activity;

D O I：

10.1016/j.jcis.2007.01.011

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：

One-pot synthesis of Ag/ZnO composites is described by a simple hydrothermal approach. In the reaction process, hexamethylenetetramine (HMT) can convert into ammonia and formaldehyde, which are used as a precipitant for the fabrication of ZnO and a reducing agent for the loading of metal Ag, respectively. The UV emission of ZnO is obviously enhanced by the deposition of silver islands on its surface. The photocatalytic characterization reveals that the composites behave high photocatalytic activity for a solution of rhodamine B. The influence of Ag+ ions on the morphology of ZnO is discussed. The composites are characterized by powder X-ray diffraction (XRD), scanning electron microscopy (SEM), and photoluminescence (PL). (C) 2007 Elsevier Inc. All rights reserved.

引用

页码：478 / 484

页数：7

共 27 条

[1] Enhancement of ultraviolet emissions from ZnO films by Ag doping [J].

Duan, Li ;

Lin, Bixia ;

Zhang, Weiying ;

Zhong, Sheng ;

Fu, Zhuxi .

APPLIED PHYSICS LETTERS, 2006, 88 (23)

[2] PHOTOCHEMISTRY AND RADIATION-CHEMISTRY OF COLLOIDAL SEMICONDUCTORS .23. ELECTRON STORAGE ON ZNO PARTICLES AND SIZE QUANTIZATION [J].

HAASE, M ;

WELLER, H ;

HENGLEIN, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1988, 92 (02) :482-487

[3] Ag-ZnO catalysts for UV-photodegradation of methylene blue [J].

Height, MJ ;

Pratsinis, SE ;

Mekasuwandumrong, O ;

Praserthdam, P .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 63 (3-4) :305-312

[4] Influence of the reactant concentrations on the synthesis of ZnO nanoparticles [J].

Hu, ZS ;

Santos, JFH ;

Oskam, G ;

Searson, PC .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2005, 288 (01) :313-316

[5] Room-temperature ultraviolet nanowire nanolasers [J].

Huang, MH ;

Mao, S ;

Feick, H ;

Yan, HQ ;

Wu, YY ;

Kind, H ;

Weber, E ;

Russo, R ;

Yang, PD .

SCIENCE, 2001, 292 (5523) :1897-1899

[6] Photocatalytic degradation of 2-phenylphenol on TiO2 and ZnO in aqueous suspensions [J].

Khodja, AA ;

Sehili, T ;

Pilichowski, JF ;

Boule, P .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2001, 141 (2-3) :231-239

[7] Synthesis and characterization of a micro scale zinc oxide-PVA composite by ultrasound irradiation and the effect of composite on the crystal growth of zinc oxide [J].

Kumar, RV ;

Elgamiel, R ;

Koltypin, Y ;

Norwig, J ;

Gedanken, A .

JOURNAL OF CRYSTAL GROWTH, 2003, 250 (3-4) :409-417

[8] Recent advances in ZnO materials and devices [J].

Look, DC .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 2001, 80 (1-3) :383-387

[9] Directed crystallisation of zinc oxide on patterned surfaces [J].

Palms, Dennis ;

Priest, Craig ;

Sedev, Rossen ;

Ralston, John ;

Wegner, Gerhard .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 303 (02) :333-336

[10] Physico-chemical characterization and photocatalytic activity of zinc oxide prepared by various methods [J].

Parida, K. M. ;

Dash, S. S. ;

Das, D. P. .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 298 (02) :787-793

← 1 2 3 →