TiO2-based Photocatalytic Cementitious Composites: Materials, Properties, Influential Parameters, and Assessment Techniques

Fatemeh Hamidi; Farhad Aslani

doi:10.3390/nano9101444

TiO₂-based Photocatalytic Cementitious Composites: Materials, Properties, Influential Parameters, and Assessment Techniques

Nanomaterials (Basel). 2019 Oct 11;9(10):1444. doi: 10.3390/nano9101444.

Authors

Fatemeh Hamidi¹, Farhad Aslani^{2

3}

Affiliations

¹ Materials and Structures Innovation Group, School of Engineering, University of Western Australia, Crawley 6009, WA, Australia. Fatemeh.Hamidi.Technosa@outlook.com.
² Materials and Structures Innovation Group, School of Engineering, University of Western Australia, Crawley 6009, WA, Australia. farhad.aslani@uwa.edu.au.
³ School of Engineering, Edith Cowan University, Joondalup 6027, WA, Australia. farhad.aslani@uwa.edu.au.

Abstract

Applications of heterogeneous photocatalytic processes based on semiconductor particles in cement-based materials have received great attention in recent years in enhancing the aesthetic durability of buildings and reducing global environmental pollution. Amongst all, titanium dioxide (TiO₂) is the most widely used semiconductor particle in structural materials with photocatalytic activity because of its low cost, chemically stable nature, and absence of toxicity. Utilization of TiO₂ in combination with cement-based materials would plunge the concentration of urban pollutants such as NO_x. In fact, cementitious composites containing TiO₂ have already found applications in self-cleaning buildings, antimicrobial surfaces, and air-purifying structures. This paper aims to present a comprehensive review on TiO₂-based photocatalysis cement technology, its practical applications, and research gaps for further progression of cementitious materials with photocatalytic activity.

Keywords: TiO2; air purification; antimicrobial surfaces; photocatalysis cementitious materials; self-cleaning surfaces.

Publication types

Review