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Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater

Reduced graphite oxide (rGO)-based materials have demonstrated promising potential for advanced oxidation processes. Along with its distinctive 2D characteristics, rGO offers the prospect of catalytic degradation of various kinds of organic pollutants from aqueous environments. The practical applica...

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Autores principales: Mazarji, Mahmoud, Mahmoodi, Niyaz Mohammad, Nabi Bidhendi, Gholamreza, Minkina, Tatiana, Sushkova, Svetlana, Mandzhieva, Saglara, Bauer, Tatiana, Soldatov, Alexander
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838983/
https://www.ncbi.nlm.nih.gov/pubmed/35159719
http://dx.doi.org/10.3390/nano12030374
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author Mazarji, Mahmoud
Mahmoodi, Niyaz Mohammad
Nabi Bidhendi, Gholamreza
Minkina, Tatiana
Sushkova, Svetlana
Mandzhieva, Saglara
Bauer, Tatiana
Soldatov, Alexander
author_facet Mazarji, Mahmoud
Mahmoodi, Niyaz Mohammad
Nabi Bidhendi, Gholamreza
Minkina, Tatiana
Sushkova, Svetlana
Mandzhieva, Saglara
Bauer, Tatiana
Soldatov, Alexander
author_sort Mazarji, Mahmoud
collection PubMed
description Reduced graphite oxide (rGO)-based materials have demonstrated promising potential for advanced oxidation processes. Along with its distinctive 2D characteristics, rGO offers the prospect of catalytic degradation of various kinds of organic pollutants from aqueous environments. The practical application of rGO as a metal-free catalyst material to promote the Fenton reaction depends on the degree of rGO reduction. In this regard, the rGO was prepared according to oxidation by modified Hummers’ method and two-step reduction via hydrothermal and calcination in the N(2) atmosphere. The as-prepared rGO was characterized in terms of X-ray diffraction, Fourier-transform infrared spectroscopy, thermal gravimetric analysis, scanning electron microscopy, UV-vis absorption spectroscopy, and transmission electron microscopy. The effectiveness of as-prepared rGO as a photocatalyst and the metal-free catalyst to decolorize different textile dyes, including basic red 46, basic red 18, and methylene blue, was investigated in visible/rGO and visible/rGO/H(2)O(2) systems. The impact of operational factors such as catalyst dose, pH, and initial dye concentration was examined. The dye degradation process was investigated by the pseudo-first-order kinetic model. In addition, the recyclability of rGO in the visible/rGO/H(2)O(2) system was examined.
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spelling pubmed-88389832022-02-13 Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater Mazarji, Mahmoud Mahmoodi, Niyaz Mohammad Nabi Bidhendi, Gholamreza Minkina, Tatiana Sushkova, Svetlana Mandzhieva, Saglara Bauer, Tatiana Soldatov, Alexander Nanomaterials (Basel) Article Reduced graphite oxide (rGO)-based materials have demonstrated promising potential for advanced oxidation processes. Along with its distinctive 2D characteristics, rGO offers the prospect of catalytic degradation of various kinds of organic pollutants from aqueous environments. The practical application of rGO as a metal-free catalyst material to promote the Fenton reaction depends on the degree of rGO reduction. In this regard, the rGO was prepared according to oxidation by modified Hummers’ method and two-step reduction via hydrothermal and calcination in the N(2) atmosphere. The as-prepared rGO was characterized in terms of X-ray diffraction, Fourier-transform infrared spectroscopy, thermal gravimetric analysis, scanning electron microscopy, UV-vis absorption spectroscopy, and transmission electron microscopy. The effectiveness of as-prepared rGO as a photocatalyst and the metal-free catalyst to decolorize different textile dyes, including basic red 46, basic red 18, and methylene blue, was investigated in visible/rGO and visible/rGO/H(2)O(2) systems. The impact of operational factors such as catalyst dose, pH, and initial dye concentration was examined. The dye degradation process was investigated by the pseudo-first-order kinetic model. In addition, the recyclability of rGO in the visible/rGO/H(2)O(2) system was examined. MDPI 2022-01-24 /pmc/articles/PMC8838983/ /pubmed/35159719 http://dx.doi.org/10.3390/nano12030374 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mazarji, Mahmoud
Mahmoodi, Niyaz Mohammad
Nabi Bidhendi, Gholamreza
Minkina, Tatiana
Sushkova, Svetlana
Mandzhieva, Saglara
Bauer, Tatiana
Soldatov, Alexander
Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title_full Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title_fullStr Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title_full_unstemmed Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title_short Visible-Light-Driven Reduced Graphite Oxide as a Metal-Free Catalyst for Degradation of Colored Wastewater
title_sort visible-light-driven reduced graphite oxide as a metal-free catalyst for degradation of colored wastewater
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8838983/
https://www.ncbi.nlm.nih.gov/pubmed/35159719
http://dx.doi.org/10.3390/nano12030374
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