Solar Induced Photocatalytic Degradation of Methylene Blue by CdS/Ag2O Nanocomposites

被引：27

作者：

Sophia, P. Joice ^{[1
]}

Balaji, D. ^{[2
,3
]}

Peters, T. James Caleb ^{[1
]}

Chander, D. Sathish ^{[1
]}

Rishaban, S. Vishwath ^{[1
]}

Shanthi, P. Vijaya ^{[1
]}

Nagavenkatesh, K. R. ^{[1
]}

Kumar, M. Rajesh ^{[4
]}

机构：

[1] Aaivalayam DIRAC, Ctr Adv Mat, Coimbatore 641046, Tamil Nadu, India

[2] Ist Italiano Tecnol, Nanochem Dept, I-16163 Genoa, Italy

[3] Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy

[4] Ural Fed Univ, Inst Nat Sci & Math, Ekaterinburg 620002, Russia

来源：

CHEMISTRYSELECT | 2020年 / 5卷 / 14期

关键词：

CdS; Ag2O nanocomposites; Co-precipitation; photocatalysis; Methylene Blue dye; water purification; HYDROGEN-PRODUCTION; AQUEOUS-SOLUTION; CDS; DYE; ZNS; PERFORMANCE; HYBRID;

D O I：

10.1002/slct.202000475

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Present investigation reports the synthesis of stable as well as visible-light active CdS/Ag2O nanocomposite photocatalysts in three varied ratios to be engaged in degradation of methylene blue (MB) dye. As-synthesized photocatalysts have been characterized with the aid of diverse characterization techniques such as X-ray diffraction (XRD), FT-Raman, Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), UV-visible and Photoluminescence (PL) spectroscopy, and transmission electron microscopy (TEM). XRD pattern clearly depicts the presence of hexagonal CdS phase and cubic Ag2O phase. Results show a remarkable enhancement of photocatalytic activity for MB degradation especially for CdS/Ag2O nanocomposite with maximum efficiency up to 88.8 %. Moreover, the effective bandgap of CdS/Ag2O (1 : 2) nanocomposite has been significantly reduced to 1.71 eV from pure CdS (2.15 eV). It can be derived that CdS/Ag2O photocatalysis may be envisaged for treatment of diluted waste water containing organic pollutants.

引用

页码：4125 / 4135

页数：11

共 33 条

[31] Effect of cooling rate on phase transformation in the low-carbon boron-treated steel [J].

Zhang, Di ;

Shintaku, Yoshiaki ;

Suzuki, Shuichi ;

Komizo, Yu-ichi .

JOURNAL OF MATERIALS SCIENCE, 2012, 47 (14) :5524-5528

[32] Ag2O/TiO2 Nanobelts Heterostructure with Enhanced Ultraviolet and Visible Photocatalytic Activity [J].

Zhou, Weijia ;

Liu, Hong ;

Wang, Jiyang ;

Liu, Duo ;

Du, Guojun ;

Cui, Jingjie .

ACS APPLIED MATERIALS & INTERFACES, 2010, 2 (08) :2385-2392

[33] Influence of Cu doping and post-heat treatment on the microstructure, optical properties and photoluminescence features of sol-gel derived nanostructured CdS thin films [J].

Ziabari, A. Abdolahzadeh ;

Ghodsi, F. E. .

JOURNAL OF LUMINESCENCE, 2013, 141 :121-129

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