Staff View: Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water

Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water

Surface water contamination by various dyes and pigments is a global problem caused by rapid industry, particularly textile/dyeing. Bangladesh's export-oriented textile sector has exploded in recent decades, polluting local waterways significantly. In this study, nano-ZnO were prepared using su...

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Main Authors:	Mahmud, Md. Shahidullah, Raihan, Md. Jahir, Islam, Md. Nazrul, Qais, Deepro Sanjid, Asim, Nilofar, Wan Abu Bakar, Wan Azelee, Quayum, Md. Emran, Islam, Md. Anwarul, Iqbal, Mohammad Ibrahim Ismail, Habib, Ahsan
Format:	Article
Language:	English
Published:	Elsevier B.V. 2022
Subjects:	QD Chemistry
Online Access:	http://eprints.utm.my/id/eprint/101047/1/WanAzelee2022_SynthesisofSolarLightDrivenNanorodZincOxide.pdf http://eprints.utm.my/id/eprint/101047/ http://dx.doi.org/10.1016/j.arabjc.2022.104144
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spelling	my.utm.1010472023-05-25T03:56:42Z http://eprints.utm.my/id/eprint/101047/ Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water Mahmud, Md. Shahidullah Raihan, Md. Jahir Islam, Md. Nazrul Qais, Deepro Sanjid Asim, Nilofar Wan Abu Bakar, Wan Azelee Quayum, Md. Emran Islam, Md. Anwarul Iqbal, Mohammad Ibrahim Ismail Habib, Ahsan QD Chemistry Surface water contamination by various dyes and pigments is a global problem caused by rapid industry, particularly textile/dyeing. Bangladesh's export-oriented textile sector has exploded in recent decades, polluting local waterways significantly. In this study, nano-ZnO were prepared using surfactant-assisted sol–gel, hydrothermal and thermal methods. SEM, XRD, reflectance spectrophotometer, EDS and adsorption tests were used to characterize the synthesized nano-ZnO. BET isotherms were used to determine the surface area, pore volume, and pore size of the as-prepared nano-ZnO. The mixed surfactant assisted-sol gel method produced nanorod-ZnO, whereas the hydrothermal and/or thermal methods yielded clusters of needles ZnO, as proven by SEM images. XRD data revealed that the synthesized nanorod-ZnO had a mainly wurtzite crystalline structure and their size was estimated using the Scherrer equation to be about 23.90 nm. EDS spectra confirmed the synthesis of pure nanorod-ZnO. Using a UV–visible reflectance spectrophotometer, the band gap energy of the as-prepared nanorod-ZnO was found to be 3.35 eV. According to BET isotherms, the BET and Langmuir surface areas were 4 and 5.4 m2/g, respectively. Prior to analyzing photodegradation, the RB was adsorbing in the presence of various doses of the nanorod-ZnO in the dark, but no adsorption was observed. The photocatalytic activities of the synthesized nano-ZnO were compared to TiO2 (anatase) for the degradation of RB in an aqueous system under solar light, UV, fluorescence, and tungsten filament light irradiation. Nanorod-ZnO showed exceptional photocatalytic activity in degrading RB in an aqueous solution under solar light irradiation. The results suggest that 0.01 g/50 mL nanorod-ZnO with a solution pH of 7.8 is the best combination for complete degradation of 2.00 × 10-5 M RB under solar light irradiation. When nano-ZnO was exposed to light, the inhibiting effect of ethanol and/or tert-butanol on the degradation of RB confirmed the formation of mostly hydroxyl free radicals. The synthesized nanorod-ZnO shown substantial photocatalytic activity in the removal of pollutants from industrial effluents and contaminated river water under solar light irradiation. A mechanism of excellent photocatalytic activity of the nanorod-ZnO is discussed. Elsevier B.V. 2022 Article PeerReviewed application/pdf en http://eprints.utm.my/id/eprint/101047/1/WanAzelee2022_SynthesisofSolarLightDrivenNanorodZincOxide.pdf Mahmud, Md. Shahidullah and Raihan, Md. Jahir and Islam, Md. Nazrul and Qais, Deepro Sanjid and Asim, Nilofar and Wan Abu Bakar, Wan Azelee and Quayum, Md. Emran and Islam, Md. Anwarul and Iqbal, Mohammad Ibrahim Ismail and Habib, Ahsan (2022) Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water. Arabian Journal of Chemistry, 15 (10). pp. 1-15. ISSN 1878-5352 http://dx.doi.org/10.1016/j.arabjc.2022.104144 DOI : 10.1016/j.arabjc.2022.104144
institution	Universiti Teknologi Malaysia
building	UTM Library
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Malaysia
content_source	UTM Institutional Repository
url_provider	http://eprints.utm.my/
language	English
topic	QD Chemistry
spellingShingle	QD Chemistry Mahmud, Md. Shahidullah Raihan, Md. Jahir Islam, Md. Nazrul Qais, Deepro Sanjid Asim, Nilofar Wan Abu Bakar, Wan Azelee Quayum, Md. Emran Islam, Md. Anwarul Iqbal, Mohammad Ibrahim Ismail Habib, Ahsan Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
description	Surface water contamination by various dyes and pigments is a global problem caused by rapid industry, particularly textile/dyeing. Bangladesh's export-oriented textile sector has exploded in recent decades, polluting local waterways significantly. In this study, nano-ZnO were prepared using surfactant-assisted sol–gel, hydrothermal and thermal methods. SEM, XRD, reflectance spectrophotometer, EDS and adsorption tests were used to characterize the synthesized nano-ZnO. BET isotherms were used to determine the surface area, pore volume, and pore size of the as-prepared nano-ZnO. The mixed surfactant assisted-sol gel method produced nanorod-ZnO, whereas the hydrothermal and/or thermal methods yielded clusters of needles ZnO, as proven by SEM images. XRD data revealed that the synthesized nanorod-ZnO had a mainly wurtzite crystalline structure and their size was estimated using the Scherrer equation to be about 23.90 nm. EDS spectra confirmed the synthesis of pure nanorod-ZnO. Using a UV–visible reflectance spectrophotometer, the band gap energy of the as-prepared nanorod-ZnO was found to be 3.35 eV. According to BET isotherms, the BET and Langmuir surface areas were 4 and 5.4 m2/g, respectively. Prior to analyzing photodegradation, the RB was adsorbing in the presence of various doses of the nanorod-ZnO in the dark, but no adsorption was observed. The photocatalytic activities of the synthesized nano-ZnO were compared to TiO2 (anatase) for the degradation of RB in an aqueous system under solar light, UV, fluorescence, and tungsten filament light irradiation. Nanorod-ZnO showed exceptional photocatalytic activity in degrading RB in an aqueous solution under solar light irradiation. The results suggest that 0.01 g/50 mL nanorod-ZnO with a solution pH of 7.8 is the best combination for complete degradation of 2.00 × 10-5 M RB under solar light irradiation. When nano-ZnO was exposed to light, the inhibiting effect of ethanol and/or tert-butanol on the degradation of RB confirmed the formation of mostly hydroxyl free radicals. The synthesized nanorod-ZnO shown substantial photocatalytic activity in the removal of pollutants from industrial effluents and contaminated river water under solar light irradiation. A mechanism of excellent photocatalytic activity of the nanorod-ZnO is discussed.
format	Article
author	Mahmud, Md. Shahidullah Raihan, Md. Jahir Islam, Md. Nazrul Qais, Deepro Sanjid Asim, Nilofar Wan Abu Bakar, Wan Azelee Quayum, Md. Emran Islam, Md. Anwarul Iqbal, Mohammad Ibrahim Ismail Habib, Ahsan
author_facet	Mahmud, Md. Shahidullah Raihan, Md. Jahir Islam, Md. Nazrul Qais, Deepro Sanjid Asim, Nilofar Wan Abu Bakar, Wan Azelee Quayum, Md. Emran Islam, Md. Anwarul Iqbal, Mohammad Ibrahim Ismail Habib, Ahsan
author_sort	Mahmud, Md. Shahidullah
title	Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
title_short	Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
title_full	Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
title_fullStr	Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
title_full_unstemmed	Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water
title_sort	synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine b, industrial effluent and contaminated river water
publisher	Elsevier B.V.
publishDate	2022
url	http://eprints.utm.my/id/eprint/101047/1/WanAzelee2022_SynthesisofSolarLightDrivenNanorodZincOxide.pdf http://eprints.utm.my/id/eprint/101047/ http://dx.doi.org/10.1016/j.arabjc.2022.104144
_version_	1768006601467232256
score	13.211869

Synthesis of solar light driven nanorod-zinc oxide for degradation of rhodamine B, industrial effluent and contaminated river water

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