Nanodispersed TiO2 hydrosol modified Portland cement paste: The underlying role of hydration on self-cleaning mechanisms
Nanodispersed TiO2 hydrosol modified Portland cement paste: The underlying role of hydration on self-cleaning mechanisms
复制标题
纳米分散二氧化钛水溶胶改性硅酸盐水泥浆体:水合作用对自清洁机制的潜在作用
DOI:
10.1016/j.cemconres.2020.106156
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发表时间:
2020-10
影响因子:
11.4
通讯作者:
Brouwers H. J. H.
中科院分区:
文献类型:
--
作者:
Wang Zixiao;Yu Qingliang;Gauvin Florent;Pan Feng;Ran Qianping;Brouwers H. J. H.
The self-cleaning performance of photocatalytic cement paste is related to the dispersion of nano-TiO2in the hardened matrix. This work aims to study the influences of Portland cement hydration on the self-cleaning behaviour of acidic anatase TiO2hydrosol modified hardened Portland cement paste (HPCP), and the working mechanisms. The presence of TiO2hydrosol results in the retardation of hydration at early age and better self-cleaning performance of HPCP. The additional surface defects of TiO2in HPCP are the main reason of self-cleaning performance enhancement. The morphology and the pore size distribution of hydration products also contribute to the enhancement of self-cleaning performance by the surface electron capture effect, which are supported by the analyses of Confocal Raman Microscopy and Scanning Electron Microscope. A new mechanism is suggested to explain the role of photocatalytic property and cement hydration on the enhancement of self-cleaning performance of HPCP with different concentration of TiO2hydrosol.
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影响因子:
--
作者:
R. H. Rogue;W. Lerch
通讯作者:
R. H. Rogue;W. Lerch
影响因子:
9.9
作者:
Li, Shuai;Leroy, Philippe;Chiaberge, Christophe
通讯作者:
Chiaberge, Christophe
DOI:
--
发表时间:
2017
期刊:
--
影响因子:
--
作者:
Vinodkumar Etacheri;M. Seery;S. Hinder;S. Pillai
通讯作者:
Vinodkumar Etacheri;M. Seery;S. Hinder;S. Pillai
影响因子:
7.4
作者:
Q. Q. Yu-Q.;Y. Hendrix;S. Lorencik;H. Brouwers
通讯作者:
Q. Q. Yu-Q.;Y. Hendrix;S. Lorencik;H. Brouwers
影响因子:
3.5
作者:
D. Klimesch;A. Ray
通讯作者:
D. Klimesch;A. Ray