Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites

Photocatalytic degradation of the dyes was deliberated by altering the catalyst and dye concentrations. The Zirconium oxide/multiwall carbon nanotube (ZrO2/MWCNT) catalyst was facilely synthesized by a hydrothermal synthesis method. The nanocomposite ZrO2/MWCNT was formed in hydrothermal condition 9...

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Autores principales:	Akshatha Gangadhar, Abhilash Mavinakere Ramesh, Jagadish Krishnegowda, Srikantaswamy Shivanna
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	methylene blue multiwall carbon nanotube (mwcnt) photocatalytic activity zirconium oxide Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/1e4bd291f43a40f799e0f2f08d740296
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spelling	oai:doaj.org-article:1e4bd291f43a40f799e0f2f08d7402962021-11-05T21:17:02ZPhoto-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites1751-231X10.2166/wpt.2021.066https://doaj.org/article/1e4bd291f43a40f799e0f2f08d7402962021-10-01T00:00:00Zhttp://wpt.iwaponline.com/content/16/4/1265https://doaj.org/toc/1751-231XPhotocatalytic degradation of the dyes was deliberated by altering the catalyst and dye concentrations. The Zirconium oxide/multiwall carbon nanotube (ZrO2/MWCNT) catalyst was facilely synthesized by a hydrothermal synthesis method. The nanocomposite ZrO2/MWCNT was formed in hydrothermal condition 95 °C of low growth temperature. The physico-chemical properties were successfully characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), dynamic light scattering (DLS) analysis, and X-ray photoelectron spectroscopy (XPS). The presence of Orbicular shaped ZrO2 nanocrystallines and multiwall carbon nanotubes was characterized by XRD pattern, and shows the presence of ZrO2 and MWCNT with the 2θ peaks at 19.62, 22.5 & 30.2. The thermal behavior of the ZrO2/MWCNT partials was also investigated by differential thermal analysis, and their vibrational bands were identified by infrared spectroscopy. The photo catalytic degradation of methylene blue in industrial wastewater was observed under UV light irradiation using the synthesized ZrO2/MWCNT as catalyst. The results revealed that the ZrO2/MWCNT nanoparticles exhibited high degeneration with COD and TOC reducing from 241 mg/L and 148.00 mg/L to 2.34 mg/L and 1.26 mg/L respectively with an efficiency of 90–94% over 25–60 min duration of UV irradiation. In comparison with the pristine Zirconium oxide and MWCNT, the composite ZrO2/MWCNT nanoparticles exhibited more efficient, durable and stable photo-catalytic activity during experiments. HIGHLIGHTS The ZrO2/MWCNT nanoparticles exhibited high degeneration efficiencies (90–94%) for 25–60 min of UV irradiation time.; The ZrO2/MWCNT nanocomposite exhibits a highly structural uniqueness combined with hydrothermal method and has an large surface area.; The present investigation serves as a base-line data for future studies on ZrO2/MWCNT nanocomposites for wastewater treatment.;Akshatha GangadharAbhilash Mavinakere RameshJagadish KrishnegowdaSrikantaswamy ShivannaIWA Publishingarticlemethylene bluemultiwall carbon nanotube (mwcnt)photocatalytic activityzirconium oxideEnvironmental technology. Sanitary engineeringTD1-1066ENWater Practice and Technology, Vol 16, Iss 4, Pp 1265-1276 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	methylene blue multiwall carbon nanotube (mwcnt) photocatalytic activity zirconium oxide Environmental technology. Sanitary engineering TD1-1066
spellingShingle	methylene blue multiwall carbon nanotube (mwcnt) photocatalytic activity zirconium oxide Environmental technology. Sanitary engineering TD1-1066 Akshatha Gangadhar Abhilash Mavinakere Ramesh Jagadish Krishnegowda Srikantaswamy Shivanna Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
description	Photocatalytic degradation of the dyes was deliberated by altering the catalyst and dye concentrations. The Zirconium oxide/multiwall carbon nanotube (ZrO2/MWCNT) catalyst was facilely synthesized by a hydrothermal synthesis method. The nanocomposite ZrO2/MWCNT was formed in hydrothermal condition 95 °C of low growth temperature. The physico-chemical properties were successfully characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS), dynamic light scattering (DLS) analysis, and X-ray photoelectron spectroscopy (XPS). The presence of Orbicular shaped ZrO2 nanocrystallines and multiwall carbon nanotubes was characterized by XRD pattern, and shows the presence of ZrO2 and MWCNT with the 2θ peaks at 19.62, 22.5 & 30.2. The thermal behavior of the ZrO2/MWCNT partials was also investigated by differential thermal analysis, and their vibrational bands were identified by infrared spectroscopy. The photo catalytic degradation of methylene blue in industrial wastewater was observed under UV light irradiation using the synthesized ZrO2/MWCNT as catalyst. The results revealed that the ZrO2/MWCNT nanoparticles exhibited high degeneration with COD and TOC reducing from 241 mg/L and 148.00 mg/L to 2.34 mg/L and 1.26 mg/L respectively with an efficiency of 90–94% over 25–60 min duration of UV irradiation. In comparison with the pristine Zirconium oxide and MWCNT, the composite ZrO2/MWCNT nanoparticles exhibited more efficient, durable and stable photo-catalytic activity during experiments. HIGHLIGHTS The ZrO2/MWCNT nanoparticles exhibited high degeneration efficiencies (90–94%) for 25–60 min of UV irradiation time.; The ZrO2/MWCNT nanocomposite exhibits a highly structural uniqueness combined with hydrothermal method and has an large surface area.; The present investigation serves as a base-line data for future studies on ZrO2/MWCNT nanocomposites for wastewater treatment.;
format	article
author	Akshatha Gangadhar Abhilash Mavinakere Ramesh Jagadish Krishnegowda Srikantaswamy Shivanna
author_facet	Akshatha Gangadhar Abhilash Mavinakere Ramesh Jagadish Krishnegowda Srikantaswamy Shivanna
author_sort	Akshatha Gangadhar
title	Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
title_short	Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
title_full	Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
title_fullStr	Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
title_full_unstemmed	Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites
title_sort	photo-catalytic dye degradation of methylene blue by using zro2/mwcnt nanocomposites
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/1e4bd291f43a40f799e0f2f08d740296
work_keys_str_mv	AT akshathagangadhar photocatalyticdyedegradationofmethylenebluebyusingzro2mwcntnanocomposites AT abhilashmavinakereramesh photocatalyticdyedegradationofmethylenebluebyusingzro2mwcntnanocomposites AT jagadishkrishnegowda photocatalyticdyedegradationofmethylenebluebyusingzro2mwcntnanocomposites AT srikantaswamyshivanna photocatalyticdyedegradationofmethylenebluebyusingzro2mwcntnanocomposites
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Photo-catalytic dye degradation of methylene blue by using ZrO2/MWCNT nanocomposites

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