Record Details

Solar light driven transition metal codoped ZnO (Ag, Ni- codoped ZnO) photocatalyst for environmental remediation

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Solar light driven transition metal codoped ZnO (Ag, Ni- codoped ZnO) photocatalyst for environmental remediation
 
Creator Sonia, D
Vasam, E K Kirupa
 
Subject Azo dye
Direct Red 81
Photocatalysis
Textile wastewater
Visible light
ZnO
 
Description 352-360
Visible light efficient Ag, Ni-codoped ZnO photocatalyst has been synthesised in the nano form by co-precipitation and
sonochemical method using ZnSO4ꞏ7H2O as a precursor. The structural, morphological and elemental observations of
synthesised photocatalyst have been characterized using X-ray diffraction (XRD), FTIR, UV-DRS, SEM with EDX and
HRTEM analysis. Incorporation of metal ions into ZnO lattice caused a red shift in the absorption band thus extending its
absorption towards visible region through inhibition of electron hole recombination reaction and through the property of
surface plasmon resonance (SPR). However the addition of silver and nickel ions has modified the electronic and optical
properties of the photocatalyst thus improving the photocatalytic performance of the sample. The photocatalytic
performance of Ag, Ni-codoped ZnO nanoparticles have been tested for degradation of Direct Red 81 dye (DR-81), as
pollutant in aqueous solution. Under the optimum conditions (20 ppm dye and 10 mg/L photocatalyst), complete
mineralization of dye solution under study was achieved within 40min of time duration. The Ag, Ni-codoped ZnO
photocatalyst is thermally stable and efficient for five successive consecutive runs thus retaining its efficiency towards
degradation. The overall results thus obtained have suggested that a suitable method for the detoxification of environmental
pollutants emerging from industries.
 
Date 2023-05-04T11:26:40Z
2023-05-04T11:26:40Z
2023-05
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/61847
https://doi.org/10.56042/ijct.v30i3.70650
 
Language en
 
Publisher NIScPR-CSIR, India
 
Source IJCT Vol.30(3) [May 2023]