Record Details

SnO2 quantum dots decorated silica nanoparticles for fast removal of cationic dye (methylene blue) from wastewater

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title SnO2 quantum dots decorated silica nanoparticles for fast removal of cationic dye (methylene blue) from wastewater
 
Creator DUTTA, D
THAKUR, D
BAHADUR, D
 
Subject AQUEOUS-SOLUTION
ACTIVATED CARBON
GRAPHENE OXIDE
MAGNETIC NANOPARTICLES
EFFICIENT REMOVAL
ADSORPTION
COMPOSITE
ADSORBENT
ISOTHERM
NANOCOMPOSITES
Tin dioxide quantum dots
Mesoporous silica nanoparticle (MSN)
Adsorption
Methylene blue
 
Description Mesoporous SiO2 nanoparticles (MSN) decorated with SnO2 quantum dots (QDs) are fabricated via simple two-step method. Morphological investigation shows that the spherical silica particles are uniformly decorated with crystalline SnO2 quantum dots. The introduction of the SnO2 quantum dots onto silica particles are also evidenced by the significant change in the specific surface area and zeta potential of the composite. Large BET surface area and uniform pore size distribution with large pore volume suggests that this composite can be exploited as an adsorbent material for organic dyes present in industrial wastewater. At room temperature, it is found to adsorb similar to 100% of methylene blue (MB), a cationic dye within 5 min. The effects of variables such as the amount of adsorbents, contact time, pH of the initial solution, salt concentration, temperature and initial dye concentration on MB removal are studied in detail. The experimental equilibrium data is investigated using different isotherm models and it is established that Langmuir isotherm model fitted well with maximum monolayer adsorption capacity of 73.15 mg/g. The high adsorption capacity, fast removal rate and reusability of this binary nanocomposite essentially establishes that the material can be used as environment friendly and low cost adsorbent material for cationic dyes. (C) 2015 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE SA
 
Date 2016-01-14T13:14:31Z
2016-01-14T13:14:31Z
2015
 
Type Article
 
Identifier CHEMICAL ENGINEERING JOURNAL, 281,482-490
1385-8947
1873-3212
http://dx.doi.org/10.1016/j.cej.2015.06.110
http://dspace.library.iitb.ac.in/jspui/handle/100/17588
 
Language en