PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT

ABSTRACT Refining and disposal of wastewater is an important concern of textile industries due to the presence of carcinogenic azo dyes. The monoazo dye Disperse Red 167.1 (DR167.1) is used in dyeing polyester and cotton fibers. In this study, Cage Cu2O particles was synthesized by using non-toxic a...

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Autores principales:	Nassaji-Jahromi,Leila, Fazaeli,Reza, Behjatmanesh-Ardakani,Reza, Taghdiri,Mehdi
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2020
Materias:	Band gap carcinogenic azo dye Disperse Red 176.1 Cu2O Equilibrium Isotherms and Kinetics Photocatalytic degradation
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000405027
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spelling	oai:scielo:S0717-970720200004050272020-12-03PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHTNassaji-Jahromi,LeilaFazaeli,RezaBehjatmanesh-Ardakani,RezaTaghdiri,Mehdi Band gap carcinogenic azo dye Disperse Red 176.1 Cu2O Equilibrium Isotherms and Kinetics Photocatalytic degradation ABSTRACT Refining and disposal of wastewater is an important concern of textile industries due to the presence of carcinogenic azo dyes. The monoazo dye Disperse Red 167.1 (DR167.1) is used in dyeing polyester and cotton fibers. In this study, Cage Cu2O particles was synthesized by using non-toxic and inexpensive materials as a bi-functional material that can mineralize this pollutant under light irradiation and dark media. The samples were characterized by FESEM, XRD, BET / BJH, FTIR, and DRS techniques. The crystallite size was almost 24.3 nm by the Williamson-Hall. Direct band gap energy was equal to 2.08 eV by Kubelka-Munk. It revealed a greater photocatalytic performance in visible light than UV-C and it absorbed 49% of the dye within 10 minutes in the darkness. The oxidation results indicated that at pH equal to 6.44 without the presence of H2O2, 0.75 mg.L−1 of cage Cu2O and of 94 mg.L−1 dye concentration yielded 91 % removal and mineralization during 10 min. Removal under the visible light irradiation increased to 93% upon increasing the time to 40 min. as dye concentration rose from 94 to 340 mg.L−1, with a slight reduction in the efficiency of the photocatalytic degradation process, the efficiency was obtained as 91%. Koble Corrigan model was found as the best isotherm model. Reaction kinetics followed the pseudo-second order model. Overall, due to its absorption and removal of dyes in a short time, it can be a good candidate for textile wastewater treatment.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.65 n.4 20202020-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000405027en10.4067/S0717-97072020000405027
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Band gap carcinogenic azo dye Disperse Red 176.1 Cu2O Equilibrium Isotherms and Kinetics Photocatalytic degradation
spellingShingle	Band gap carcinogenic azo dye Disperse Red 176.1 Cu2O Equilibrium Isotherms and Kinetics Photocatalytic degradation Nassaji-Jahromi,Leila Fazaeli,Reza Behjatmanesh-Ardakani,Reza Taghdiri,Mehdi PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
description	ABSTRACT Refining and disposal of wastewater is an important concern of textile industries due to the presence of carcinogenic azo dyes. The monoazo dye Disperse Red 167.1 (DR167.1) is used in dyeing polyester and cotton fibers. In this study, Cage Cu2O particles was synthesized by using non-toxic and inexpensive materials as a bi-functional material that can mineralize this pollutant under light irradiation and dark media. The samples were characterized by FESEM, XRD, BET / BJH, FTIR, and DRS techniques. The crystallite size was almost 24.3 nm by the Williamson-Hall. Direct band gap energy was equal to 2.08 eV by Kubelka-Munk. It revealed a greater photocatalytic performance in visible light than UV-C and it absorbed 49% of the dye within 10 minutes in the darkness. The oxidation results indicated that at pH equal to 6.44 without the presence of H2O2, 0.75 mg.L−1 of cage Cu2O and of 94 mg.L−1 dye concentration yielded 91 % removal and mineralization during 10 min. Removal under the visible light irradiation increased to 93% upon increasing the time to 40 min. as dye concentration rose from 94 to 340 mg.L−1, with a slight reduction in the efficiency of the photocatalytic degradation process, the efficiency was obtained as 91%. Koble Corrigan model was found as the best isotherm model. Reaction kinetics followed the pseudo-second order model. Overall, due to its absorption and removal of dyes in a short time, it can be a good candidate for textile wastewater treatment.
author	Nassaji-Jahromi,Leila Fazaeli,Reza Behjatmanesh-Ardakani,Reza Taghdiri,Mehdi
author_facet	Nassaji-Jahromi,Leila Fazaeli,Reza Behjatmanesh-Ardakani,Reza Taghdiri,Mehdi
author_sort	Nassaji-Jahromi,Leila
title	PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
title_short	PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
title_full	PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
title_fullStr	PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
title_full_unstemmed	PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT
title_sort	photocatalytic degradation/adsorption of carcinogenic azo dye disperse red 176.1 by nanocage cu2o as a dual function catalyst on the visible-light
publisher	Sociedad Chilena de Química
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072020000405027
work_keys_str_mv	AT nassajijahromileila photocatalyticdegradationadsorptionofcarcinogenicazodyedispersered1761bynanocagecu2oasadualfunctioncatalystonthevisiblelight AT fazaelireza photocatalyticdegradationadsorptionofcarcinogenicazodyedispersered1761bynanocagecu2oasadualfunctioncatalystonthevisiblelight AT behjatmaneshardakanireza photocatalyticdegradationadsorptionofcarcinogenicazodyedispersered1761bynanocagecu2oasadualfunctioncatalystonthevisiblelight AT taghdirimehdi photocatalyticdegradationadsorptionofcarcinogenicazodyedispersered1761bynanocagecu2oasadualfunctioncatalystonthevisiblelight
_version_	1714200954435272704

PHOTOCATALYTIC DEGRADATION/ADSORPTION OF CARCINOGENIC AZO DYE DISPERSE RED 176.1 BY NANOCAGE CU2O AS A DUAL FUNCTION CATALYST ON THE VISIBLE-LIGHT

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