Photocatalytic degradation of reactive black 5 azo dye by zinc sulfide quantum dots prepared by a sonochemical method

被引：57

作者：

Goharshadi, Elaheh K. ^{[1
,2
]}

Hadadian, Mahboobeh ^{[1
]}

Karimi, Mahdi ^{[1
]}

Azizi-Toupkanloo, Hossein ^{[1
]}

机构：

[1] Ferdowsi Univ Mashhad, Dept Chem, Fac Sci, Mashhad 917751436, Iran

[2] Ferdowsi Univ Mashhad, Ctr Nano Res, Mashhad 917751436, Iran

来源：

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING | 2013年 / 16卷 / 04期

关键词：

Zinc sulfide; Ultrasonic irradiation; Semiconductor; Photocatalytic degradation; Reactive black 5; ZNS NANOPARTICLES; ASSISTED SYNTHESIS; ORGANIC-DYES; SIZE; NANOSTRUCTURES; NANOCRYSTALS; NANOSPHERES; COMPOSITES; REMOVAL; GROWTH;

D O I：

10.1016/j.mssp.2013.03.005

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Zinc sulfide (ZnS) nanoparticles (NPs) with an average particle size of 2 nm were successfully synthesized under ultrasonic irradiation without any surfactant and high temperature treatment. Prepared NPs were characterized by powder X-ray diffraction, transmission electron microscopy, high resolution transmission electron microscopy, Fourier transform infrared spectroscopy, dynamic light scattering analysis, and UV-vis absorption spectroscopy. The energy band gap of ZnS NPs was measured by UV-vis absorption spectroscopy. The photocatalytic activity of semiconducting sulfide quantum dots for degradation of an azo dye called reactive black 5 (RB5) was investigated. Results showed that the dye can be photocatalytically degraded with high rate by ZnS NPs under UV light irradiation. The kinetics of removal of RB5 in aqueous solutions was studied in a series of experiments which were varied in the amount of ZnS NPs, contact time, pH, dye concentration, and temperature. The experimental data were fitted very well in the pseudo-second order kinetic model. 95% of dye was successfully removed in 10 min using 0.2 g ZnS NPs in a neutral pH. A possible molecular mechanism for photocatalytic degradation of dye by ZnS NPs was also given. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1109 / 1116

页数：8

共 53 条

[1] Ultrasound assisted additive free synthesis of nanocrystalline zinc oxide [J].

Bhatte, Kushal D. ;

Fujita, Shin-Ichiro ;

Arai, Masahiko ;

Pandit, Anirudha B. ;

Bhanage, Bhalchandra M. .

ULTRASONICS SONOCHEMISTRY, 2011, 18 (01) :54-58

[2] Field emission and photoluminescence characteristics of ZnS nanowires via vapor phase growth [J].

Chang, Yongqin ;

Wang, Mingwei ;

Chen, Xihong ;

Ni, Saili ;

Qiang, Weijing .

SOLID STATE COMMUNICATIONS, 2007, 142 (05) :295-298

[3] Energy gap studies of ZnS nanocrystallites [J].

Chellammal, S. ;

Sankar, S. .

MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING, 2010, 13 (03) :214-216

[4] Synthesis of Au-ZnS hybrid nanostructures and their application for electrochemical biosensor [J].

Du, Jian ;

Yu, Xiuping ;

Di, Junwei .

JOURNAL OF SOLID STATE ELECTROCHEMISTRY, 2013, 17 (01) :109-114

[5] ZnS nanostructures: From synthesis to applications [J].

Fang, Xiaosheng ;

Zhai, Tianyou ;

Gautam, Ujjal K. ;

Li, Liang ;

Wu, Limin ;

Bando, Yoshio ;

Golberg, Dmitri .

PROGRESS IN MATERIALS SCIENCE, 2011, 56 (02) :175-287

[6] Kinetically restraining aggregation of ZnS nanocrystals and the effect on photocatalysis [J].

Feng, Shouai ;

Zhao, Jianghong ;

Zhu, Zhenping .

MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS, 2008, 150 (02) :116-120

[7] Fabrication of cerium oxide nanoparticles: Characterization and optical properties [J].

Goharshadi, Elaheh K. ;

Samiee, Sara ;

Nancarrow, Paul .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2011, 356 (02) :473-480

[8] Integration of photocatalysis with membrane processes for purification of water contaminated with organic dyes [J].

Grzechulska-Damszel, J. ;

Tomaszewska, M. ;

Morawski, A. W. .

DESALINATION, 2009, 241 (1-3) :118-126

[9] Reduction of nitrate and nitrite ions over Ni-ZnS photocatalyst under visible light irradiation in the presence of a sacrificial reagent [J].

Hamanoi, O ;

Kudo, A .

CHEMISTRY LETTERS, 2002, (08) :838-839

[10] Synthesis and characterization of mesoporous and nano-crystalline phosphate zirconium oxides [J].

Hernandez Enriquez, J. M. ;

Cortez Lajas, L. A. ;

Garcia Alamilla, P. ;

Castillo Mares, A. ;

Sandoval Robles, G. ;

Garcia Serrano, L. A. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 483 (1-2) :425-428

← 1 2 3 4 5 6 →