Synthesis of sol-gel titania bactericide coatings on adobe brick

被引：19

作者：

Calabria A, Juliana ^{[2
]}

Vasconcelos, Wander L. ^{[2
]}

Daniel, Doni J. ^{[1
]}

Chater, Richard ^{[1
]}

McPhail, David S. ^{[1
]}

Boccaccini, Aldo R. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2BP, England

[2] Univ Fed Minas Gerais, Dept Met & Mat Eng, BR-30160030 Belo Horizonte, MG, Brazil

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2010年 / 24卷 / 03期

基金：

英国工程与自然科学研究理事会;

关键词：

Sol-gel; Titania; Bactericide; Sustainable materials; Adobe brick; Coatings; TIO2; FILMS;

D O I：

10.1016/j.conbuildmat.2009.08.020

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study presents the development and characterisation of transparent sol-gel TiO2 coatings based on titanium IV isopropoxide (TIN), formed on a sustainable clay brick material (adobe). The sol-gel layers modified the surface of adobe, which can potentially lead to new functionalities enhancing adobe performance, e g. higher water resistance and imparting bactericidal behaviour. X-ray diffraction results on synthesised TiO2 layers based on TIN showed that the film has characteristic peaks of anatase phase. Static SIMS analysis was used to detect the presence of TiO2 on adobe surfaces, which were also observed by TEM confirming their thickness to be in the range 20-50 nm. Sol-gel double SiO2-TiO2 layers were also deposited on adobe substrates. These coatings did not exhibit any cracks neither signs of peeling off from the substrate. The developed surface modified adobe bricks are attractive sustainable building materials. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：384 / 389

页数：6

共 29 条

[1] Synthesis of porous titanium dioxide membranes [J].

Agoudjil, N. ;

Benkacem, T. .

DESALINATION, 2007, 206 (1-3) :531-537

[2]

Brinker C. J., 1990, SOL GEL SCI PHYS CHE, P907

[3]

CALABRIA AJ, 2004, DEV SCI TECHNOLOGY, V1, P225

[4]

CALABRIA AJ, 2004, P 48 C BRAS CER CUR, P5

[5] Microstructure and chemical degradation of adobe and clay bricks [J].

Calabria, Juliana A. ;

Vasconcelos, Wander L. ;

Boccaccini, Aldo R. .

CERAMICS INTERNATIONAL, 2009, 35 (02) :665-671

[6]

*CONSTR, 2008, SOC CONSTR CIV EC LD

[7] Low temperature sol-gel processed photocatalytic titania coating [J].

Daoud, WA ;

Xin, JH .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2004, 29 (01) :25-29

[8] ORMOCER coatings based on titanium and poly(tetraethylene glycol malonate) [J].

Deng, CS ;

Wright, PV ;

James, PF .

JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 1998, 13 (1-3) :489-493

[9] Study of sol-gel TiO2 and TiO2-MnO obtained from a peptized solution [J].

Harizanov, O ;

Ivanova, T ;

Harizanova, A .

MATERIALS LETTERS, 2001, 49 (3-4) :165-171

[10]

HENCH LL, 1990, ANNU REV MATER SCI, V20, P269

← 1 2 3 →