Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes

Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platin...

Descripción completa

Guardado en:

Detalles Bibliográficos
Publicado:	2013
Materias:	ammonia oxidation gold catalysis mesoporous films metal-polymer nanocomposites nanocatalysis polymer brushes Ammonia oxidation Gold catalysis Mesoporous films Metal-polymer nanocomposites Nanocatalysis Polymer brushes Ammonia Catalyst activity Dendrimers Nanocomposites Nanoparticles Nitrogen oxides Platinum
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19448244_v5_n18_p8833_Rafti http://hdl.handle.net/20.500.12110/paper_19448244_v5_n18_p8833_Rafti
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_19448244_v5_n18_p8833_Rafti
record_format	dspace
spelling	paper:paper_19448244_v5_n18_p8833_Rafti2023-06-08T16:32:25Z Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes ammonia oxidation gold catalysis mesoporous films metal-polymer nanocomposites nanocatalysis polymer brushes Ammonia oxidation Gold catalysis Mesoporous films Metal-polymer nanocomposites Nanocatalysis Polymer brushes Ammonia Catalyst activity Dendrimers Nanocomposites Nanoparticles Nitrogen oxides Platinum Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers. © 2013 American Chemical Society. 2013 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19448244_v5_n18_p8833_Rafti http://hdl.handle.net/20.500.12110/paper_19448244_v5_n18_p8833_Rafti
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	ammonia oxidation gold catalysis mesoporous films metal-polymer nanocomposites nanocatalysis polymer brushes Ammonia oxidation Gold catalysis Mesoporous films Metal-polymer nanocomposites Nanocatalysis Polymer brushes Ammonia Catalyst activity Dendrimers Nanocomposites Nanoparticles Nitrogen oxides Platinum
spellingShingle	ammonia oxidation gold catalysis mesoporous films metal-polymer nanocomposites nanocatalysis polymer brushes Ammonia oxidation Gold catalysis Mesoporous films Metal-polymer nanocomposites Nanocatalysis Polymer brushes Ammonia Catalyst activity Dendrimers Nanocomposites Nanoparticles Nitrogen oxides Platinum Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
topic_facet	ammonia oxidation gold catalysis mesoporous films metal-polymer nanocomposites nanocatalysis polymer brushes Ammonia oxidation Gold catalysis Mesoporous films Metal-polymer nanocomposites Nanocatalysis Polymer brushes Ammonia Catalyst activity Dendrimers Nanocomposites Nanoparticles Nitrogen oxides Platinum
description	Platinum nanoparticles of 3 nm diameter were included in mesoporous silica thin films by controlling the mesopore surface charge with a short polymer brush. This metal-polymer-mesopore nanocomposite presents high catalytic activity toward ammonia oxidation at low temperatures with 4.5% weight platinum loading. An anomalous partial selectivity toward nitrous oxide is observed for the first time, which can be traced back to the synergy of the particles and modified surface. This effect opens a path toward the design of nanocomposite catalysts with highly controlled environments, in which the size- and function-controlled cavities can be tuned in order to lower the reaction barriers. © 2013 American Chemical Society.
title	Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
title_short	Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
title_full	Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
title_fullStr	Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
title_full_unstemmed	Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
title_sort	heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes
publishDate	2013
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_19448244_v5_n18_p8833_Rafti http://hdl.handle.net/20.500.12110/paper_19448244_v5_n18_p8833_Rafti
_version_	1768544752580427776

Heterogeneous catalytic activity of platinum nanoparticles hosted in mesoporous silica thin films modified with polyelectrolyte brushes

Ejemplares similares