Synthesis, characterization and photocatalytic degradation efficiency of CdS quantum dots embedded in sodium borosilicate glasses

被引：40

作者：

Janbandhu, S. Y. ^{[1
]}

Munishwar, S. R. ^{[1
]}

Gedam, R. S. ^{[1
]}

机构：

[1] Visvesvaraya Natl Inst Technol, Dept Phys, Nagpur 440010, Maharashtra, India

来源：

APPLIED SURFACE SCIENCE | 2018年 / 449卷

关键词：

QDs; XRD; HR-TEM; UV-vis; PL; Photocatalysis; ELECTRON-HOLE RECOMBINATION; SOLAR HYDROGEN-PRODUCTION; BORO-SILICATE GLASSES; OPTICAL-PROPERTIES; CONFINEMENT; NANOSTRUCTURES; NANOPARTICLES; NANOCRYSTALS; IONS; BLUE;

D O I：

10.1016/j.apsusc.2018.02.065

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：

Borosilicate glass system (SiO2-B2O3-Na2O-ZnO) with the addition of 3 wt% CdS was prepared by conventional melt quenching method. Amorphous nature of glass sample was confirmed by XRD measurement. Glass transition temperature and crystallization temperature was determined from DTA curve. CdS quantum dots (QDs) were grown in this glass matrix by optimized heat treatment schedule which was confirmed by XRD measurement. The growth of CdS QDs was also confirmed by optical absorption spectra and photoluminescence (PL) measurement. Energy band gap was calculated from the absorption spectra and found to decrease with increase in size of QDs. The size of QDs measured by optical absorption and it was also confirmed by HR-TEM results. The increase in size of QDs is also noticed from emission spectra which show red shift in PL intensity. The glass embedded with CdS QDs were tested for photocatalysis study and it shows 70.6% and 68.0% photodegradation efficiency for 5 ppm and 10 ppm respectively. (C) 2018 Elsevier B. V. All rights reserved.

引用

页码：221 / 227

页数：7

共 30 条

[1] RESONANCE RAMAN-SCATTERING AND OPTICAL-ABSORPTION STUDIES OF CDSE MICROCLUSTERS AT HIGH-PRESSURE [J].

ALIVISATOS, AP ;

HARRIS, TD ;

BRUS, LE ;

JAYARAMAN, A .

JOURNAL OF CHEMICAL PHYSICS, 1988, 89 (10) :5979-5982

[2] Formation of three-dimensional ZnSe-based semiconductor nanostructures [J].

Alyshev, S. V. ;

Zabezhaylov, A. O. ;

Mironov, R. A. ;

Kozlovsky, V. I. ;

Dianov, E. M. .

SEMICONDUCTORS, 2010, 44 (01) :72-75

[3]

[Anonymous], [No title captured]

[4] Eco-friendly solar light driven hydrogen production from copious waste H2S and organic dye degradation by stable and efficient orthorhombic CdS quantum dots-GeO2 glass photocatalyst [J].

Apte, Sanjay K. ;

Garaje, Sunil N. ;

Valant, Matjaz ;

Kale, Bharat B. .

GREEN CHEMISTRY, 2012, 14 (05) :1455-1462

[5] QUANTUM CONFINEMENT EFFECTS OF SEMICONDUCTING MICROCRYSTALLITES IN GLASS [J].

BORRELLI, NF ;

HALL, DW ;

HOLLAND, HJ ;

SMITH, DW .

JOURNAL OF APPLIED PHYSICS, 1987, 61 (12) :5399-5409

[6] ELECTRON ELECTRON AND ELECTRON-HOLE INTERACTIONS IN SMALL SEMICONDUCTOR CRYSTALLITES - THE SIZE DEPENDENCE OF THE LOWEST EXCITED ELECTRONIC STATE [J].

BRUS, LE .

JOURNAL OF CHEMICAL PHYSICS, 1984, 80 (09) :4403-4409

[7] Synthesis and optical properties of multifunctional CdS nanostructured dielectric nanocomposites [J].

Dey, Chirantan ;

Molla, Atiar Rahaman ;

Goswami, Madhumita ;

Kothiyal, Govind Prasad ;

Karmakar, Basudeb .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS, 2014, 31 (08) :1761-1770

[8]

Ertis I. F., 2016, MOD RES CATAL, V6, P1

[9] 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

[10] HETEROGENEOUS PHOTOCATALYSIS [J].

FOX, MA ;

DULAY, MT .

CHEMICAL REVIEWS, 1993, 93 (01) :341-357

← 1 2 3 →