Sol-gel TiO2 nanoparticles prompt photocatalytic cement for pollution degradation

Cerro Prada, María Elena and Torres Costa, Vicente and Manso Silván, Miguel (2015). Sol-gel TiO2 nanoparticles prompt photocatalytic cement for pollution degradation. In: "The Fifth International Symposium on Nanotechnology in Construction (NICOM5)", 25-26 Mayo 2015, Chicago. ISBN 978-3-319-17087-9.

Description

Title: Sol-gel TiO2 nanoparticles prompt photocatalytic cement for pollution degradation
Author/s:
  • Cerro Prada, María Elena
  • Torres Costa, Vicente
  • Manso Silván, Miguel
Item Type: Presentation at Congress or Conference (Article)
Event Title: The Fifth International Symposium on Nanotechnology in Construction (NICOM5)
Event Dates: 25-26 Mayo 2015
Event Location: Chicago
Title of Book: Nanotechnology in Construction: Proceedings of NICOM5
Date: 25 May 2015
ISBN: 978-3-319-17087-9
Volume: 1
Subjects:
Faculty: E.T.S.I. Civil (UPM)
Department: Ingeniería Civil: Construcción, Infraestructura y Transporte
UPM's Research Group: Tecnología de Materiales y Medio Ambiente TEMATMA
Creative Commons Licenses: None

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Abstract

TiO2 nanoparticles (TiO2NPs) prepared by the sol–gel method have been incorporated to cement paste with the aim of creating a photocatalytic system capable of compensating, through degradation of hazardous molecules, the envi- ronmental impact associated to the production of the clinker. Doping was carried out at different mass ratios with TiO2NPs precursor solutions within a fresh ce- ment paste, which was then characterized using scanning electron microscopy (SEM). The photocatalytic performance was evaluated by the degradation of Methylene Blue (MB) using a 125W UV lamp as irradiating source. Main cement properties such as hydration degree and C-S-H content are affected by TiO2NPs doping level. Cement containing TiO2NPs exhibited an increasing photocatalytic activity for increasing doping, while the pure cement paste control could hardly degrade MB. The kinetics of the system where also studied and their second order behavior related to microstructural aspects of the system.

More information

Item ID: 37963
DC Identifier: http://oa.upm.es/37963/
OAI Identifier: oai:oa.upm.es:37963
Deposited by: Dra Elena Cerro-Prada
Deposited on: 05 Oct 2015 08:48
Last Modified: 05 Oct 2015 08:48
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