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)
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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 |
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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: | |
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 |
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