Photocatalytic cementitious material for eco-efficient construction—a systematic literature review

Hamdany, A. H., Satyanaga, A., Zhang, D., Kim, Y. and Kim, J. R. (2022) Photocatalytic cementitious material for eco-efficient construction—a systematic literature review. Applied Sciences, 12(17), 8741. (doi: 10.3390/app12178741)

[img] Text
277726.pdf - Published Version
Available under License Creative Commons Attribution.

3MB

Abstract

Photoinduced processes governed by light activated TiO2 have been studied in many ways. One of the most active areas is the development of TiO2 photocatalysis technologies on their application for reducing environmental impacts. The immobilization of TiO2 on solid support, such as cementitious materials, greatly enhances its use in practical applications. In this review, a wide range of applications for achieving eco-efficient building using cementitious composite materials containing TiO2 photocatalyst was presented. The basic mechanism of photocatalysis, such as electron excitation, charge transfer process, reactive oxygen species (ROS) generation, and its role to oxidize the pollutant and microorganisms were extensively discussed. Unlike self-cleaning and air purification systems, the study on the antibacterial function of a cement-based surface containing TiO2 is very limited. In photocatalytic cementitious materials, the key element affecting the photocatalytic performance is the accessible active surface area. However, microstructure of cementitious materials changes with age due to hydration and surface carbonation. Hence, surface area reduction and mass transfer limitation become the main drawbacks of incorporating TiO2 in cementitious materials. This review, therefore, provides the state of the art in photocatalytic cement-based composite materials and identifies the areas in which future improvement is needed.

Item Type:Articles
Additional Information:This research was funded by the Nazarbayev University, Collaborative Research Project (CRP) Grant No. 11022021CRP1512 and social policy grant.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Kim, Dr Yongmin
Creator Roles:
Kim, Y.Data curation, Visualization, Writing – review and editing
Authors: Hamdany, A. H., Satyanaga, A., Zhang, D., Kim, Y., and Kim, J. R.
College/School:College of Science and Engineering > School of Engineering
Journal Name:Applied Sciences
Publisher:MDPI
ISSN:2076-3417
ISSN (Online):2076-3417
Published Online:31 August 2022
Copyright Holders:Copyright © 2022 The Authors
First Published:First published in Applied Sciences 12(17): 8741
Publisher Policy:Reproduced under a Creative Commons License

University Staff: Request a correction | Enlighten Editors: Update this record