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Article

Photocatalytic Performance Evaluation of Titanium Dioxide Nanotube-Reinforced Cement Paste

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Department of Architectural Engineering, Hanyang University, 222, Wangsimni-ro, Sungdong-gu, Seoul 04763, Korea
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Department of Architecture Engineering, Songwon University, Gwangju 61756, Korea
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Korea Conformity Lab, Construction Technology Research Center, Construction Division, Seoul 08503, Korea
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Department of Civil and Environmental Engineering, Hannam University, Daejeon 306-791, Korea
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Department of Civil, Architectural, and Environmental System Engineering, Sungkyunkwan University, Gyeonggi-Do 16419, Korea
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Department of Chemical and Biomedical Engineering, University of Texas at San Antonio (UTSA), San Antonio, TX 78249, USA
*
Author to whom correspondence should be addressed.
Materials 2020, 13(23), 5423; https://doi.org/10.3390/ma13235423
Received: 2 November 2020 / Revised: 20 November 2020 / Accepted: 27 November 2020 / Published: 28 November 2020
(This article belongs to the Special Issue Sustainable Construction Materials: From Paste to Concrete)
Considering the increase in research regarding environmental pollution reduction, the utilization of cementitious material, a commonly used construction material, in photocatalysts has become a desirable research field for the widespread application of photocatalytic degradation technology. Nano-reinforcement technology for cementitious materials has been extensively researched and developed. In this work, as a new and promising reinforcing agent for cementitious materials, the photocatalytic performance of titanium dioxide nanotube (TNT) was investigated. The degradation of methylene blue was used to evaluate the photocatalytic performance of the TNT-reinforced cement paste. In addition, cement paste containing micro-TiO2 (m-TiO2) and nano-TiO2 (n-TiO2) particles were used for comparison. Moreover, the effect of these TiO2-based photocatalytic materials on the cement hydration products was monitored via X-ray diffraction (XRD) and thermogravimetric analysis (TG). The results indicated that all the TiO2 based materials promoted the formation of hydration products. After 28 days of curing, the TNT-reinforced cement paste contained the maximum amount of hydration products (Ca(OH)2). Furthermore, the cement paste containing TNT exhibited better photocatalytic effects than that containing n-TiO2, but worse than that containing m-TiO2. View Full-Text
Keywords: photocatalysis; titanium dioxide nanotube; anatase TiO2; hydration products; cement paste photocatalysis; titanium dioxide nanotube; anatase TiO2; hydration products; cement paste
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MDPI and ACS Style

Liu, J.; Jee, H.; Lim, M.; Kim, J.H.; Kwon, S.J.; Lee, K.M.; Zal Nezhad, E.; Bae, S. Photocatalytic Performance Evaluation of Titanium Dioxide Nanotube-Reinforced Cement Paste. Materials 2020, 13, 5423. https://doi.org/10.3390/ma13235423

AMA Style

Liu J, Jee H, Lim M, Kim JH, Kwon SJ, Lee KM, Zal Nezhad E, Bae S. Photocatalytic Performance Evaluation of Titanium Dioxide Nanotube-Reinforced Cement Paste. Materials. 2020; 13(23):5423. https://doi.org/10.3390/ma13235423

Chicago/Turabian Style

Liu, Junxing, Hyeonseok Jee, Myungkwan Lim, Joo H. Kim, Seung J. Kwon, Kwang M. Lee, Erfan Zal Nezhad, and Sungchul Bae. 2020. "Photocatalytic Performance Evaluation of Titanium Dioxide Nanotube-Reinforced Cement Paste" Materials 13, no. 23: 5423. https://doi.org/10.3390/ma13235423

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