TiO2/Arabic Gum for Degradation of Pollutants in Water
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Published:2023-11-09
Issue:22
Volume:15
Page:15768
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ISSN:2071-1050
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Container-title:Sustainability
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language:en
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Short-container-title:Sustainability
Author:
Lopes Anderson1, Araújo Francisca P.1, Damasceno Dihego1ORCID, Honório Luzia M. C.1, Morais Alan I. S.1ORCID, Almeida Luciano C.2ORCID, Garcia Ramón Peña3ORCID, Silva-Filho Edson C.1ORCID, Furtini Marcelo B.1, Osajima Josy A.1ORCID
Affiliation:
1. Interdisciplinary Laboratory Advanced Materials (LIMAv), Federal of University of Piauí, Teresina 64049-550, PI, Brazil 2. Chemical Engineering Department, Federal University of Pernambuco, Recife 52171-900, PE, Brazil 3. Academic Unit of Cabo de Santo Agostinho, Federal University of Rural Pernambuco, Cabo de Santo Agostinho 50670-901, PE, Brazil
Abstract
Emerging contaminants and pollution are environmental problems threatening public health. Antibiotic ciprofloxacin and methylene blue dye are pollutants frequently detected in water systems worldwide. Photocatalysis is a process for water treatment. TiO2-based catalysts synthesized with natural gums show improved photocatalytic properties. Here, the sol–gel method synthesized TiO2/Arabic gum for photocatalytic performance. The innovation of this work was synthesized at 400 °C and investigated their photocatalytic proprieties using methylene blue and ciprofloxacin as model pollutants. XRD showed that the photocatalyst was in the anatase phase. The result showed that TiO2 with a band gap of 3.29 eV was achieved at a calcination temperature of 400 °C. Corresponding FTIR results suggest only the existence of functional groups related to TiO2. The SEM and BET method characterization indicated that TiO2/Arabic gum were spherical-shaped nanoparticles arranged in clusters with a mesoporous structure, contributing to photocatalytic performance. In addition, photocatalytic studies showed that the methylene blue dye and ciprofloxacin antibiotic degradation rates reached 99% and 94% under UV light, respectively. The hole (h+) and OH ⦁ radicals are essential in photodegradation. The synthesized material showed excellent photostability and maintained almost the same degradation percentage in the three consecutive cycles tested on the different pollutants. The TiO2/Arabic gum is an excellent candidate for future use in treating contaminants in aqueous media using photocatalysis. Therefore, TiO2/Arabic gum nanoparticles are a promising material for wastewater treatment.
Funder
Convênio UFPI-IFPI
Subject
Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction
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