Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework

HKUST-1 is one of the popular metal-organic frameworks (MOFs). The formation of this MOF is significantly accelerated by adding Keggin polyoxometalate anions to the synthesis solution. In this paper the chemistry behind this observation was investigated. Upon addition of Keggin type H 3PW12O40 heter...

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Detalles Bibliográficos
Autor principal:	Jobbagy, Matias
Publicado:	2011
Materias:	Acidic conditions Heteropoly acids Keggin ions Keggin polyoxometalate Keggin-type Metal organic framework Paddle wheels PH measurements Room temperature Synthesis solution XANES measurements Ethanol Hydrolysis Ions Oxides
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09599428_v21_n26_p9768_Bajpe http://hdl.handle.net/20.500.12110/paper_09599428_v21_n26_p9768_Bajpe
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_09599428_v21_n26_p9768_Bajpe
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spelling	paper:paper_09599428_v21_n26_p9768_Bajpe2023-06-08T15:57:15Z Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework Jobbagy, Matias Acidic conditions Heteropoly acids Keggin ions Keggin polyoxometalate Keggin-type Metal organic framework Paddle wheels PH measurements Room temperature Synthesis solution XANES measurements Ethanol Hydrolysis Ions Oxides HKUST-1 is one of the popular metal-organic frameworks (MOFs). The formation of this MOF is significantly accelerated by adding Keggin polyoxometalate anions to the synthesis solution. In this paper the chemistry behind this observation was investigated. Upon addition of Keggin type H 3PW12O40 heteropolyacid the speciation of Cu2+ cations in ethanol:H2O mixture drastically changes. Combining EPR and XANES measurements with accurate pH measurements and prediction of Cu2+ hydrolysis provides strong evidence for surface induced hydrolysis and consequent dimerisation of monomeric Cu2+ species on Keggin ions in acidic conditions. This enables paddle wheel formation, hence explaining the instantaneous precipitation of Cu 3(BTC)2 at room temperature and the systematic encapsulation of Keggin ions in its pores. © 2011 The Royal Society of Chemistry. Fil:Jobbágy, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09599428_v21_n26_p9768_Bajpe http://hdl.handle.net/20.500.12110/paper_09599428_v21_n26_p9768_Bajpe
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Acidic conditions Heteropoly acids Keggin ions Keggin polyoxometalate Keggin-type Metal organic framework Paddle wheels PH measurements Room temperature Synthesis solution XANES measurements Ethanol Hydrolysis Ions Oxides
spellingShingle	Acidic conditions Heteropoly acids Keggin ions Keggin polyoxometalate Keggin-type Metal organic framework Paddle wheels PH measurements Room temperature Synthesis solution XANES measurements Ethanol Hydrolysis Ions Oxides Jobbagy, Matias Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
topic_facet	Acidic conditions Heteropoly acids Keggin ions Keggin polyoxometalate Keggin-type Metal organic framework Paddle wheels PH measurements Room temperature Synthesis solution XANES measurements Ethanol Hydrolysis Ions Oxides
description	HKUST-1 is one of the popular metal-organic frameworks (MOFs). The formation of this MOF is significantly accelerated by adding Keggin polyoxometalate anions to the synthesis solution. In this paper the chemistry behind this observation was investigated. Upon addition of Keggin type H 3PW12O40 heteropolyacid the speciation of Cu2+ cations in ethanol:H2O mixture drastically changes. Combining EPR and XANES measurements with accurate pH measurements and prediction of Cu2+ hydrolysis provides strong evidence for surface induced hydrolysis and consequent dimerisation of monomeric Cu2+ species on Keggin ions in acidic conditions. This enables paddle wheel formation, hence explaining the instantaneous precipitation of Cu 3(BTC)2 at room temperature and the systematic encapsulation of Keggin ions in its pores. © 2011 The Royal Society of Chemistry.
author	Jobbagy, Matias
author_facet	Jobbagy, Matias
author_sort	Jobbagy, Matias
title	Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
title_short	Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
title_full	Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
title_fullStr	Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
title_full_unstemmed	Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework
title_sort	effect of keggin polyoxometalate on cu(ii) speciation and its role in the assembly of cu3(btc)2 metal-organic framework
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09599428_v21_n26_p9768_Bajpe http://hdl.handle.net/20.500.12110/paper_09599428_v21_n26_p9768_Bajpe
work_keys_str_mv	AT jobbagymatias effectofkegginpolyoxometalateoncuiispeciationanditsroleintheassemblyofcu3btc2metalorganicframework
_version_	1768544189220388864

Effect of Keggin polyoxometalate on Cu(ii) speciation and its role in the assembly of Cu3(BTC)2 metal-organic framework

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