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Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study

A novel metal-organic framework [MOFs], and 2-[benzo [d]thiazol-2-ylthio)-3-hydroxy acrylaldehyde-Cu-benzene dicarboxylic acid was synthesized by solvothermal method and characterized using p-XRD, FSEM-EDX, TGA, BET, FTIR. The tethered organic linker, 2-[benzo [d]thiazol-2-ylthio)-3-hydroxyacrylalde...

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Autores principales: Challa, Malathi, Chinnam, Sampath, Rajanna, Ambika Madalakote, Nandagudi, Apurva, Yallur, Basappa C., Adimule, Vinayak
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922976/
https://www.ncbi.nlm.nih.gov/pubmed/36793962
http://dx.doi.org/10.1016/j.heliyon.2023.e13223
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author Challa, Malathi
Chinnam, Sampath
Rajanna, Ambika Madalakote
Nandagudi, Apurva
Yallur, Basappa C.
Adimule, Vinayak
author_facet Challa, Malathi
Chinnam, Sampath
Rajanna, Ambika Madalakote
Nandagudi, Apurva
Yallur, Basappa C.
Adimule, Vinayak
author_sort Challa, Malathi
collection PubMed
description A novel metal-organic framework [MOFs], and 2-[benzo [d]thiazol-2-ylthio)-3-hydroxy acrylaldehyde-Cu-benzene dicarboxylic acid was synthesized by solvothermal method and characterized using p-XRD, FSEM-EDX, TGA, BET, FTIR. The tethered organic linker, 2-[benzo [d]thiazol-2-ylthio)-3-hydroxyacrylaldehyde was commonly known as 2-mercaptobenimidazole analogue [2-MBIA]. Analysis of BET disclosed that addition of 2-MBIA to Cu-benzene dicarboxylic acid [Cu-BDC], reduced the crystallite size from 70.0 nm to 65.90 nm, surface area from 17.95 to 17.02 m(2) g(-1) and enhances the pore size from 5.84 nm with 0.027 cm(3) g(-1) pore volume to 8.74 nm with 0.361 cm(3) g(-1) pore volume. Batch experiments were conducted to optimize pH, adsorbent dosage, and, Congo red (CR) concentration. The adsorption percentage of CR on the novel MOFs was 54%. Adsorption kinetic studies revealed that the uptake adsorption capacity at equilibrium was 184.7 mg/g from pseudo-first-order kinetics which gave a good fit with the experimental data. Intraparticle diffusion model explained the process of the adsorption mechanism: diffusion from the bulk solution onto the porous surface of the adsorbent. Freundlich and Sips models were the best fit models of the several non-linear isotherm models. Temkin isotherm suggested the adsorption of CR on MOFs was of an exothermic nature.
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spelling pubmed-99229762023-02-14 Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study Challa, Malathi Chinnam, Sampath Rajanna, Ambika Madalakote Nandagudi, Apurva Yallur, Basappa C. Adimule, Vinayak Heliyon Research Article A novel metal-organic framework [MOFs], and 2-[benzo [d]thiazol-2-ylthio)-3-hydroxy acrylaldehyde-Cu-benzene dicarboxylic acid was synthesized by solvothermal method and characterized using p-XRD, FSEM-EDX, TGA, BET, FTIR. The tethered organic linker, 2-[benzo [d]thiazol-2-ylthio)-3-hydroxyacrylaldehyde was commonly known as 2-mercaptobenimidazole analogue [2-MBIA]. Analysis of BET disclosed that addition of 2-MBIA to Cu-benzene dicarboxylic acid [Cu-BDC], reduced the crystallite size from 70.0 nm to 65.90 nm, surface area from 17.95 to 17.02 m(2) g(-1) and enhances the pore size from 5.84 nm with 0.027 cm(3) g(-1) pore volume to 8.74 nm with 0.361 cm(3) g(-1) pore volume. Batch experiments were conducted to optimize pH, adsorbent dosage, and, Congo red (CR) concentration. The adsorption percentage of CR on the novel MOFs was 54%. Adsorption kinetic studies revealed that the uptake adsorption capacity at equilibrium was 184.7 mg/g from pseudo-first-order kinetics which gave a good fit with the experimental data. Intraparticle diffusion model explained the process of the adsorption mechanism: diffusion from the bulk solution onto the porous surface of the adsorbent. Freundlich and Sips models were the best fit models of the several non-linear isotherm models. Temkin isotherm suggested the adsorption of CR on MOFs was of an exothermic nature. Elsevier 2023-01-24 /pmc/articles/PMC9922976/ /pubmed/36793962 http://dx.doi.org/10.1016/j.heliyon.2023.e13223 Text en © 2023 Published by Elsevier Ltd. https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Challa, Malathi
Chinnam, Sampath
Rajanna, Ambika Madalakote
Nandagudi, Apurva
Yallur, Basappa C.
Adimule, Vinayak
Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title_full Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title_fullStr Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title_full_unstemmed Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title_short Adsorption efficacy of functionalized Cu-BDC MOFs tethered 2-mercaptobenzimidazole analogue: A comparative study
title_sort adsorption efficacy of functionalized cu-bdc mofs tethered 2-mercaptobenzimidazole analogue: a comparative study
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9922976/
https://www.ncbi.nlm.nih.gov/pubmed/36793962
http://dx.doi.org/10.1016/j.heliyon.2023.e13223
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