Synergistic effect of sono-photocatalytic process for the degradation of organic pollutants using CuO-TiO2/rGO

Sundaram Ganesh Babu; Peramaiah Karthik; Miriam C. John; Sandeep Kumar Lakhera; Muthupandian Ashokkumar; Jeehyeong Khim; Bernaurdshaw Neppolian

doi:10.1016/j.ultsonch.2018.09.021

Synergistic effect of sono-photocatalytic process for the degradation of organic pollutants using CuO-TiO₂/rGO

Sundaram Ganesh Babu
, Peramaiah Karthik
, Miriam C. John
, Sandeep Kumar Lakhera
, Muthupandian Ashokkumar
, Jeehyeong Khim
, Bernaurdshaw Neppolian^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

185 Citations (Scopus)

Abstract

Combinations of different Advanced Oxidation Processes (AOPs) are being exploited for waste water treatment. The usage of ultrasound in photocatalysis finds much attention as the combined process offers some advantages over individual processes. Herein, we report the ultrasound assisted photocatalytic degradation of an organic pollutant (methyl orange as a model dye) in the presence of CuO-TiO₂/rGO photocatalyst which was prepared by a simple wet impregnation method. A synergistic effect (3.7-fold) was observed by combining the sonolysis and photocatalysis processes. Influence of Cu loading and graphene oxide (GO) dosage over the photocatalytic performance of TiO₂ was examined in detail. The catalyst dosage and initial concentration of MO were optimized based on a series of experimental studies. Besides, neutral pH was found to show an optimum efficiency for this sono-photocatalytic process.

Original language	English
Pages (from-to)	218-223
Number of pages	6
Journal	Ultrasonics Sonochemistry
Volume	50
DOIs	https://doi.org/10.1016/j.ultsonch.2018.09.021
Publication status	Published - 2019 Jan

Bibliographical note

Publisher Copyright:
© 2018 Elsevier B.V.

Keywords

CuO-TiO/rGO
Degradation
Organic pollutants
Sono-photocatalysis
Synergistic effect

ASJC Scopus subject areas

Environmental Chemistry
Chemical Engineering (miscellaneous)
Radiology Nuclear Medicine and imaging
Acoustics and Ultrasonics
Organic Chemistry
Inorganic Chemistry

Access to Document

10.1016/j.ultsonch.2018.09.021

Cite this

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title = "Synergistic effect of sono-photocatalytic process for the degradation of organic pollutants using CuO-TiO2/rGO",

abstract = "Combinations of different Advanced Oxidation Processes (AOPs) are being exploited for waste water treatment. The usage of ultrasound in photocatalysis finds much attention as the combined process offers some advantages over individual processes. Herein, we report the ultrasound assisted photocatalytic degradation of an organic pollutant (methyl orange as a model dye) in the presence of CuO-TiO2/rGO photocatalyst which was prepared by a simple wet impregnation method. A synergistic effect (3.7-fold) was observed by combining the sonolysis and photocatalysis processes. Influence of Cu loading and graphene oxide (GO) dosage over the photocatalytic performance of TiO2 was examined in detail. The catalyst dosage and initial concentration of MO were optimized based on a series of experimental studies. Besides, neutral pH was found to show an optimum efficiency for this sono-photocatalytic process.",

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AU - Babu, Sundaram Ganesh

AU - Karthik, Peramaiah

AU - John, Miriam C.

AU - Lakhera, Sandeep Kumar

AU - Ashokkumar, Muthupandian

AU - Khim, Jeehyeong

AU - Neppolian, Bernaurdshaw

PY - 2019/1

Y1 - 2019/1

N2 - Combinations of different Advanced Oxidation Processes (AOPs) are being exploited for waste water treatment. The usage of ultrasound in photocatalysis finds much attention as the combined process offers some advantages over individual processes. Herein, we report the ultrasound assisted photocatalytic degradation of an organic pollutant (methyl orange as a model dye) in the presence of CuO-TiO2/rGO photocatalyst which was prepared by a simple wet impregnation method. A synergistic effect (3.7-fold) was observed by combining the sonolysis and photocatalysis processes. Influence of Cu loading and graphene oxide (GO) dosage over the photocatalytic performance of TiO2 was examined in detail. The catalyst dosage and initial concentration of MO were optimized based on a series of experimental studies. Besides, neutral pH was found to show an optimum efficiency for this sono-photocatalytic process.

AB - Combinations of different Advanced Oxidation Processes (AOPs) are being exploited for waste water treatment. The usage of ultrasound in photocatalysis finds much attention as the combined process offers some advantages over individual processes. Herein, we report the ultrasound assisted photocatalytic degradation of an organic pollutant (methyl orange as a model dye) in the presence of CuO-TiO2/rGO photocatalyst which was prepared by a simple wet impregnation method. A synergistic effect (3.7-fold) was observed by combining the sonolysis and photocatalysis processes. Influence of Cu loading and graphene oxide (GO) dosage over the photocatalytic performance of TiO2 was examined in detail. The catalyst dosage and initial concentration of MO were optimized based on a series of experimental studies. Besides, neutral pH was found to show an optimum efficiency for this sono-photocatalytic process.

KW - CuO-TiO/rGO

KW - Degradation

KW - Organic pollutants

KW - Sono-photocatalysis

KW - Synergistic effect

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