Abstract

In this work, the self-cleaning and photocatalytic properties of mesoporousTiO2/AuNRs-SiO2 composites (namely UCA-TiO2Au) prepared by a simple and low-costtechnique were investigated toward application in building materials. Mesoporous photocatalyticnanocomposites coating the surface of stone and other building materials are a very promisingapproach to address relevant questions connected with the increasing atmospheric pollution.We tested three types of preformed TiO2/AuNRs nanostructures in order to evaluate the effectof AuNRs on the photocatalytic activity of resulting coatings deposited on the surface of apopular building limestone. The resulting nanocomposites provide crack-free surface coatingson limestone, effective adhesion, improve the stone mechanical properties and impart hydrophobicand self-cleaning properties. Photocatalytic characterization involved the degradation of a targetcompound (Methylene blue; MB) under direct exposure to simulated solar light using TiO2 P25 Evonik(TiO2 P25) as a reference material. Moreover, these coatings upon irradiation by simulated solarlight were successfully employed for the photocatalytic oxidation of carbon soot. The experimentalresults revealed that UCA-TiO2Au samples are the best performing coating in both MB bleachingand soot degradation.

Autore Pugliese

• Falcicchio Aurelia , Giannini Cinzia , Comparelli Roberto

Tutti gli autori

• A. Truppi; M. Luna; F. Petronella; A. Falcicchio; C. Giannini; R. Comparelli; M.J. Mosquera

Titolo volume/Rivista

Coatings

Anno di pubblicazione

2018

ISSN

2079-6412

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

Non Disponibile