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Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture

MXenes and MXene-based composite materials have potential applications in a wide range of areas due to their unique physical and chemical characteristics. At present, it is still a major challenge to develop a simple, safe, and efficient route to prepare MXenes without using fluorinated etchants. He...

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Autores principales: Tian, Zhengshan, Tian, Hao, Cao, Kesheng, Bai, Suzhen, Peng, Qinlong, Wang, Yabo, Zhu, Qiuxiang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9626649/
https://www.ncbi.nlm.nih.gov/pubmed/36339050
http://dx.doi.org/10.3389/fchem.2022.962528
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author Tian, Zhengshan
Tian, Hao
Cao, Kesheng
Bai, Suzhen
Peng, Qinlong
Wang, Yabo
Zhu, Qiuxiang
author_facet Tian, Zhengshan
Tian, Hao
Cao, Kesheng
Bai, Suzhen
Peng, Qinlong
Wang, Yabo
Zhu, Qiuxiang
author_sort Tian, Zhengshan
collection PubMed
description MXenes and MXene-based composite materials have potential applications in a wide range of areas due to their unique physical and chemical characteristics. At present, it is still a major challenge to develop a simple, safe, and efficient route to prepare MXenes without using fluorinated etchants. Herein, we design a facile method to prepare Ti(3)C(2)T(x) MXene sheets by selectively etching Ti(3)AlC(2) powders in an aqueous diluted H(2)SO(4) solution with H(2)O(2) as an oxidant. In a system of H(2)SO(4) and H(2)O(2), an aqueous H(2)SO(4) solution with a concentration of 6 mol/L is a strongly acidic medium with no volatility, and 30% H(2)O(2) acts as a strong green oxidizer without harmful by-products. The experimental process is safe and convenient to conduct in a beaker under a water bath of 40°C. The etching process can be completed in 1 h under the air atmosphere conditions. The experimental results confirmed that the etched Ti(3)AlC(2) powders can be successfully separated into Ti(3)C(2)T(x) nanosheets under ultrasound treatment without using any intercalation agent. The relevant etching mechanism is may be attributed to the synergy effect of H(2)SO(4) and H(2)O(2), which triggers sequential selective etching of Al layers from the Ti(3)AlC(2) phase. It may provide a new green way to prepare MXene-based materials without using toxic HF or HF-containing etchants.
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spelling pubmed-96266492022-11-03 Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture Tian, Zhengshan Tian, Hao Cao, Kesheng Bai, Suzhen Peng, Qinlong Wang, Yabo Zhu, Qiuxiang Front Chem Chemistry MXenes and MXene-based composite materials have potential applications in a wide range of areas due to their unique physical and chemical characteristics. At present, it is still a major challenge to develop a simple, safe, and efficient route to prepare MXenes without using fluorinated etchants. Herein, we design a facile method to prepare Ti(3)C(2)T(x) MXene sheets by selectively etching Ti(3)AlC(2) powders in an aqueous diluted H(2)SO(4) solution with H(2)O(2) as an oxidant. In a system of H(2)SO(4) and H(2)O(2), an aqueous H(2)SO(4) solution with a concentration of 6 mol/L is a strongly acidic medium with no volatility, and 30% H(2)O(2) acts as a strong green oxidizer without harmful by-products. The experimental process is safe and convenient to conduct in a beaker under a water bath of 40°C. The etching process can be completed in 1 h under the air atmosphere conditions. The experimental results confirmed that the etched Ti(3)AlC(2) powders can be successfully separated into Ti(3)C(2)T(x) nanosheets under ultrasound treatment without using any intercalation agent. The relevant etching mechanism is may be attributed to the synergy effect of H(2)SO(4) and H(2)O(2), which triggers sequential selective etching of Al layers from the Ti(3)AlC(2) phase. It may provide a new green way to prepare MXene-based materials without using toxic HF or HF-containing etchants. Frontiers Media S.A. 2022-10-19 /pmc/articles/PMC9626649/ /pubmed/36339050 http://dx.doi.org/10.3389/fchem.2022.962528 Text en Copyright © 2022 Tian, Tian, Cao, Bai, Peng, Wang and Zhu. https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Chemistry
Tian, Zhengshan
Tian, Hao
Cao, Kesheng
Bai, Suzhen
Peng, Qinlong
Wang, Yabo
Zhu, Qiuxiang
Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title_full Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title_fullStr Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title_full_unstemmed Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title_short Facile preparation of Ti(3)C(2)T(x) sheets by selectively etching in a H(2)SO(4)/H(2)O(2) mixture
title_sort facile preparation of ti(3)c(2)t(x) sheets by selectively etching in a h(2)so(4)/h(2)o(2) mixture
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9626649/
https://www.ncbi.nlm.nih.gov/pubmed/36339050
http://dx.doi.org/10.3389/fchem.2022.962528
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