Synthesis and characterization of a CuS-WO3 composite photocatalyst for enhanced visible light photocatalytic activity

被引：132

作者：

Theerthagiri, J. ^{[1
]}

Senthil, R. A. ^{[1
]}

Malathi, A. ^{[1
]}

Selvi, A. ^{[2
]}

Madhavan, J. ^{[1
]}

Ashokkumar, Muthupandian ^{[3
]}

机构：

[1] Thiruvalluvar Univ, Dept Chem, Solar Energy Lab, Vellore 632115, Tamil Nadu, India

[2] VIT Univ, SBST, Bioremediat Lab, Vellore 632014, Tamil Nadu, India

[3] Univ Melbourne, Sch Chem, Melbourne, Vic 3010, Australia

来源：

RSC ADVANCES | 2015年 / 5卷 / 65期

关键词：

PHOTOCHEMICAL-SYNTHESIS; METHYLENE-BLUE; DEGRADATION; HETEROSTRUCTURES; NANOCOMPOSITES; NANOPARTICLES; REDUCTION; MECHANISM; EVOLUTION; NANORODS;

D O I：

10.1039/c5ra06512g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

WO3 nanorods and flower-like CuS were synthesized by a hydrothermal process. The visible light driven CuS-WO3 photocatalyst was prepared by adding different weight ratios (10-40%) of CuS on WO3 by a wet impregnation method. The synthesized photocatalysts were characterized by powder X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, Field emission scanning electron microscopy (FE-SEM), High-resolution transmission electron microscopy (HR-TEM), energy dispersive X-ray spectroscopy (EDAX) and UV-vis diffuse reflectance (DRS) spectroscopy. The photocatalytic performance of synthesized photocatalysts was evaluated for the photodegradation of methylene blue (MB) under visible light irradiation. The 10% CuS-WO3 photocatalyst showed higher photocatalytic degradation activity than others which could be due to the increased absorption of light in the visible region and also a lower recombination of charge carriers. Further, the photoelectrochemical measurements carried out for 10% CuS-WO3 revealed the faster migration of photo-induced charge-carriers. A possible reaction mechanism for the enhancement of photocatalytic activity of CuS-WO3 has been proposed.

引用

页码：52718 / 52725

页数：8

共 35 条

[1] Synthesis of TiO2/WO3 nanoparticles via sonochemical approach for the photocatalytic degradation of methylene blue under visible light illumination [J].

Anandan, Sambandam ;

Sivasankar, Thirugnanasambandam ;

Lana-Villarreal, Teresa .

ULTRASONICS SONOCHEMISTRY, 2014, 21 (06) :1964-1968

[2] Photochemical synthesis of copper sulphide/titanium oxide photocatalyst [J].

Andronic, Luminita ;

Isac, Luminita ;

Duta, Anca .

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2011, 221 (01) :30-37

[3] Photocatalytic degradation mechanisms of self-assembled rose-flower-like CeO2 hierarchical nanostructures [J].

Arul, N. Sabari ;

Mangalaraj, D. ;

Kim, Tae Whan .

APPLIED PHYSICS LETTERS, 2013, 102 (22)

[4] A facile solution chemical route to self-assembly of CuS ball-flowers and their application as an efficient photocatalyst [J].

Cheng, Zhiguo ;

Wang, Shaozhen ;

Wang, Qian ;

Geng, Baoyou .

CRYSTENGCOMM, 2010, 12 (01) :144-149

[5] Photoelectrochemical Behavior of Hierarchically Structured Si/WO3 Core-Shell Tandem Photoanodes [J].

Coridan, Robert H. ;

Arpin, Kevin A. ;

Brunschwig, Bruce S. ;

Braun, Paul V. ;

Lewis, Nathan S. .

NANO LETTERS, 2014, 14 (05) :2310-2317

[6] Roles of TaON and Ta3N5 in the visible-Fenton-like degradation of atrazine [J].

Du, Yingxun ;

Zhao, Lu ;

Zhang, Yuanyuan .

JOURNAL OF HAZARDOUS MATERIALS, 2014, 267 :55-61

[7] Hydrothermal synthesis of hierarchical CuS/ZnS nanocomposites and their photocatalytic and microwave absorption properties [J].

Guan, Xiao-Hui ;

Qu, Peng ;

Guan, Xin ;

Wang, Guang-Sheng .

RSC ADVANCES, 2014, 4 (30) :15579-15585

[8] Photocatalytic degradation pathway of methylene blue in water [J].

Houas, A ;

Lachheb, H ;

Ksibi, M ;

Elaloui, E ;

Guillard, C ;

Herrmann, JM .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2001, 31 (02) :145-157

[9] Synthesis of a visible-light active V2O5-g-C3N4 heterojunction as an efficient photocatalytic and photoelectrochemical material [J].

Jayaraman, Theerthagiri ;

Raja, Senthil Arumugam ;

Priya, Annadurai ;

Jagannathan, Madhavan ;

Ashokkumar, Muthupandian .

NEW JOURNAL OF CHEMISTRY, 2015, 39 (02) :1367-1374

[10] Modifiers-assisted formation of nickel nanoparticles and their catalytic application to p-nitrophenol reduction [J].

Jiang, Zhifeng ;

Xie, Jimin ;

Jiang, Deli ;

Wei, Xiaojun ;

Chen, Min .

CRYSTENGCOMM, 2013, 15 (03) :560-569

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