Photocatalytic degradation of particulate pollutants and self-cleaning performance of TiO2-containing silicate coating and mortar

Krishnan, Padmaja; Zhang, Min-Hong; Yu, Liya E.; Feng, Huajun

doi:10.1016/j.conbuildmat.2013.03.009

Cited by 54 publications

(32 citation statements)

References 15 publications

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“…2b), which is reported more frequently in the literature [48,[55][56][57]. In this case, the extent of degradation recorded for the PTD1 treatment was confirmed to be around 90%, while a dye degradation close to 100% can be observed for the PTD2 mixture after 2.5 h. Discoloration of rhodamine B mainly, but not exclusively, affects the a ⁄ parameter.…”

Section: Photocatalytic Activitysupporting

confidence: 57%

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Colangiuli

Calia

Bianco

2015

Construction and Building Materials

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Section: Photocatalytic Activitysupporting

confidence: 57%

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Colangiuli

Calia

Bianco

2015

Construction and Building Materials

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“…The same test was reported by P. Krishnan et al [15] but differ from machine that used to test photocatalytic degradation of gaseous pollutant. In these researches, a continuous flow reactor was modified and used for photocatalytic NOx removal test, while the concentration of NOx concentration was measured by a Chemiluminescence NOx analyzer.…”

Section: Depollution Testing (Nox Oxidation Test)mentioning

confidence: 79%

“…Previous published research has studied the characterization of raw material (TiO 2 ) that has been used as a photocatalytic application by using X-ray Diffraction (XRD) [15]. According to P. Krishnan et al [15], crystal structure deterioration is a possible reason for the efficiency for photocatalytic of titania to decrease. However, the XRD patterns before and after 400 hours of UV exposure demonstrates stability of the TiO 2 crystal structure due to nearly identical of TiO 2 photocatalyst.…”

Section: X-ray Fluorescence (Xrf)mentioning

confidence: 99%

Review on Characterization and Mechanical Performance of Self-cleaning Concrete

et al. 2017

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Abstract. Self-cleaning concrete is an effective alternative to provide cleaner environment which contribute to sustainability and towards a green environment. It is in accordance with the requirements of environmental issues on huge energy consumption and air pollution from carbon dioxide (CO2) emissions. Photocatalyst in self-cleaning concrete accelerates the decomposition of organic particulates, hence pollution could be reduced through photocatalytic degradation of gaseous pollutants. Mechanical performances of self-cleaning concrete were improved by adding photocatalytic materials. Self cleaning abilities were evaluated in the photocatalytic activity test under UV light and photocatalytic degradation of gaseous pollutant was measured by depollution test. This review aims to give an overview about the characteristics of photocatalytic materials and mechanical performances of self-cleaning concrete.

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“…The cementitious materials used in building facade offer enormous surface area for photocatalytic reactions (Cassar, 2004). This strategy have a good potential in urban pollution control and at the same time maintain aesthetic of the buildings appearance (Krishnan et al, 2013, Jimenez-Relinque et al, 2017, Yang et al, 2017. Furthermore, incorporating TiO 2 photocatalyst into cementitious materials may be able to keep the cement-based surface sterile by inhibiting the growth of microorganisms through photocatalytic degradation , Singh et al, 2018.…”

Section: Research Backgroundmentioning

confidence: 99%

“…Jiang et al (2009) shows that probe-sonication works very well to significantly decrease the hydrodynamic size. In the next studies, Yousefi et al (2013) as well as Krishnan et al (2013) adopted wetmixing procedure in order to suppress the aggregation of TiO 2 particles in cement matrix. In wet-mixing procedure, the TiO 2 particles were first mixed with water using probe ultrasonication before adding other materials.…”

Section: Tio 2 Dispersionmentioning

confidence: 99%

Photocatalytic cementitious material for self-cleaning and anti-microbial application

Hamdany¹

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First of all, the author would like to express his greatest gratitude to his supervisor, Assistant Professor Qian Shunzhi, not only for his invaluable supervision and advice but also for sharing his experiences, encouragement and motivation throughout the journey of his PhD program. The author owes his deepest gratitude to Dr Wei Li and Dr Ding Yuanzhao for their endless assistance and patience in guiding and helping the author on experimental design, chemical synthesis, microbiological related experiments, training for using equipment and report writing. The author would also like to extend his sincere gratitude to Nanyang Technological University for the NTU research scholarship. The author would like to thank all colleagues in his group (Weng Yiwei, Lu Bing, Liu Siyu, Dr Zhang Zhigang), Dr Martin Wijaya (CEE), Dr Ronny William (SPMS), and Dr Namyo Salim (CEE) for their comments and helpful discussion. The author also would like to thank all of PhD students in Prof Chen Yuan's group, Mr Cheng from CT Lab, Mr Phua from CT Lab, Ms Lim, Han Khiang from Environmental Lab and technicians that have not been mentioned for all the helps and friendship through these years. Finally, the author would like to express his utmost gratitude to his family who has given continuous moral support and encouragement to the author. Chapter 4. Graphene-based TiO 2 nanocomposites for enhanced visible light degradation of organic dye and antibacterial effect of Escherichia coli 53 4.

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Photocatalytic degradation of particulate pollutants and self-cleaning performance of TiO2-containing silicate coating and mortar

Cited by 54 publications

References 15 publications

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Novel multifunctional coatings with photocatalytic and hydrophobic properties for the preservation of the stone building heritage

Review on Characterization and Mechanical Performance of Self-cleaning Concrete

Photocatalytic cementitious material for self-cleaning and anti-microbial application

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