Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching

Summary: Molten-salt etching of Ti3AlC2 MAX phase offers a promising route to produce 2D Ti3C2Tz (MXene) nanosheets without hazardous HF. However, molten-salt etching results in MXene clays that are not water dispersible, thus preventing further processing. This occurs because molten-salt etching re...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Kailash Arole, Jackson W. Blivin, Sanjit Saha, Dustin E. Holta, Xiaofei Zhao, Anubhav Sarmah, Huaixuan Cao, Miladin Radovic, Jodie L. Lutkenhaus, Micah J. Green
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Materials science Materials synthesis Nanomaterials Science Q
Acceso en línea:	https://doaj.org/article/c80e0b6267f44ba1ada34daffee25fee
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:c80e0b6267f44ba1ada34daffee25fee
record_format	dspace
spelling	oai:doaj.org-article:c80e0b6267f44ba1ada34daffee25fee2021-11-20T05:11:18ZWater-dispersible Ti3C2Tz MXene nanosheets by molten salt etching2589-004210.1016/j.isci.2021.103403https://doaj.org/article/c80e0b6267f44ba1ada34daffee25fee2021-12-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S2589004221013742https://doaj.org/toc/2589-0042Summary: Molten-salt etching of Ti3AlC2 MAX phase offers a promising route to produce 2D Ti3C2Tz (MXene) nanosheets without hazardous HF. However, molten-salt etching results in MXene clays that are not water dispersible, thus preventing further processing. This occurs because molten-salt etching results in a lack of -OH terminal groups rendering the MXene clay hydrophobic. Here, we demonstrate a method that produces water-dispersible Ti3C2Tz nanosheets using molten salt (SnF2) to etch. In molten salt etching, SnF2 diffuses between the layers to form AlF3 and Sn as byproducts, separating the layers. The stable, aqueous Ti3C2Tz dispersion yields a ζ potential of −31.7 mV, because of -OH terminal groups introduced by KOH washing. X-ray diffraction and electron microscopy confirm the formation of Ti3C2Tz etched clay with substantial d-spacing as compared with clay etched with HF. This work is the first to use molten salt etching to successfully prepare colloidally stable aqueous dispersions of Ti3C2Tz nanosheets.Kailash AroleJackson W. BlivinSanjit SahaDustin E. HoltaXiaofei ZhaoAnubhav SarmahHuaixuan CaoMiladin RadovicJodie L. LutkenhausMicah J. GreenElsevierarticleMaterials scienceMaterials synthesisNanomaterialsScienceQENiScience, Vol 24, Iss 12, Pp 103403- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Materials science Materials synthesis Nanomaterials Science Q
spellingShingle	Materials science Materials synthesis Nanomaterials Science Q Kailash Arole Jackson W. Blivin Sanjit Saha Dustin E. Holta Xiaofei Zhao Anubhav Sarmah Huaixuan Cao Miladin Radovic Jodie L. Lutkenhaus Micah J. Green Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
description	Summary: Molten-salt etching of Ti3AlC2 MAX phase offers a promising route to produce 2D Ti3C2Tz (MXene) nanosheets without hazardous HF. However, molten-salt etching results in MXene clays that are not water dispersible, thus preventing further processing. This occurs because molten-salt etching results in a lack of -OH terminal groups rendering the MXene clay hydrophobic. Here, we demonstrate a method that produces water-dispersible Ti3C2Tz nanosheets using molten salt (SnF2) to etch. In molten salt etching, SnF2 diffuses between the layers to form AlF3 and Sn as byproducts, separating the layers. The stable, aqueous Ti3C2Tz dispersion yields a ζ potential of −31.7 mV, because of -OH terminal groups introduced by KOH washing. X-ray diffraction and electron microscopy confirm the formation of Ti3C2Tz etched clay with substantial d-spacing as compared with clay etched with HF. This work is the first to use molten salt etching to successfully prepare colloidally stable aqueous dispersions of Ti3C2Tz nanosheets.
format	article
author	Kailash Arole Jackson W. Blivin Sanjit Saha Dustin E. Holta Xiaofei Zhao Anubhav Sarmah Huaixuan Cao Miladin Radovic Jodie L. Lutkenhaus Micah J. Green
author_facet	Kailash Arole Jackson W. Blivin Sanjit Saha Dustin E. Holta Xiaofei Zhao Anubhav Sarmah Huaixuan Cao Miladin Radovic Jodie L. Lutkenhaus Micah J. Green
author_sort	Kailash Arole
title	Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
title_short	Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
title_full	Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
title_fullStr	Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
title_full_unstemmed	Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching
title_sort	water-dispersible ti3c2tz mxene nanosheets by molten salt etching
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/c80e0b6267f44ba1ada34daffee25fee
work_keys_str_mv	AT kailasharole waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT jacksonwblivin waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT sanjitsaha waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT dustineholta waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT xiaofeizhao waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT anubhavsarmah waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT huaixuancao waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT miladinradovic waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT jodiellutkenhaus waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching AT micahjgreen waterdispersibleti3c2tzmxenenanosheetsbymoltensaltetching
_version_	1718419566734868480

Water-dispersible Ti3C2Tz MXene nanosheets by molten salt etching

Ejemplares similares