Photocatalytic construction and building materials: From fundamentals to applications

Chen, Jun; Poon, Chi Sun

doi:10.1016/j.buildenv.2009.01.002

Cited by 653 publications

(336 citation statements)

References 45 publications

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“…Jun Chen et al [19] used a stirred flow reactor to measure the photodegradation of organic compounds on the photocatalytic material surface regarding the degradation of VOCs. Photocatalytic activity of pure samples of TiO 2 was observed three to ten times greater than the cementitious sample with 3% catalyst that was prepared.…”

Section: Depollution Testing (Nox Oxidation Test)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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Section: Depollution Testing (Nox Oxidation Test)mentioning

confidence: 99%

Review on Characterization and Mechanical Performance of Self-cleaning Concrete

et al. 2017

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“…tiles, cement mortars and paints [10]. Mortars and paint coatings are the building materials most used for this kind of applications [11][12][13][14][15][16]. Although several works study the photoabatement of NOx under lab conditions, there is a lack of studies reporting NOx photoabatement under real outdoor conditions.…”

Section: Introductionmentioning

confidence: 99%

Highly active photocatalytic paint for NOx abatement under real-outdoor conditions

Ângelo

Andrade

Mendes

2014

Applied Catalysis A: General

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In this work the photocatalytic activity of paints incorporating commercial titanium dioxide for outdoor nitrogen oxide (NO) photoabatement is assessed. The paint acts as a 3D support of the photocatalyst and thus allows a larger amount of TiO2 nanoparticles to absorb light and to contact with pollutants, when compared with a 2D photocatalytic surface. NO conversion and selectivity towards nitrites and nitrates were determined according to the standard ISO 22197-1:2007 (E).Paint coatings were formulated and tested under laboratory and outdoor conditions. The best paint formulation incorporates CristalACTiV TM PC500 photocatalyst from Cristal and calcium carbonate extender, presenting a NO conversion of ca. 70% and a selectivity of ca. 40% under laboratory conditions. The same photocatalyst but characterized in the form of an optically thick film of compressed powder presented ca. 95% and 45% of conversion and selectivity, respectively. Under the real-outdoor conditions, the best performing paint showed a NO conversion of about 95%.

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“…The main reason for the extensive study of wetting properties of metal oxides is that their wettability is generally reversible under UV irradiation and dark storage. Although, the most popular metal oxides that exhibit photocatalytic Among these oxides, the main center of attention of study in self-cleaning applications has been TiO 2 because its oxidizing ability is the strongest [12]. TiO 2 is considered to be the ideal choice for self-cleaning applications also due to its photocatalytic and photoinduced hydrophilic properties and good transparency in the visible range of the electromagnetic spectrum.…”

Section: Self-cleaning Action Of Metal Oxidesmentioning

confidence: 99%

“…They find applications in diverse fields from daily life to the industry including self-cleaning exterior construction materials, interior furnishing materials, road construction materials, solar cells, car mirrors, textiles, utensils, roof tiles, etc. [11][12][13][14][15]. Self-cleaning surfaces use sunlight and natural rainfall to clean their surface.…”

Section: Introductionmentioning

confidence: 99%

Metal oxide thin films and nanostructures for self-cleaning applications: current status and future prospects

Krishna

Madhurima

Purkayastha

2013

Eur. Phys. J. Appl. Phys.

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Abstract. Surfaces that exhibit reversible wettability toward water are extremely important for a variety of technological applications. In this context, the development of superhydrophobic and superhydrophilic surfaces for self-cleaning applications has been receiving a great deal of attention in the last few years. In this review, an overview of the current state-of-science and technology of self-cleaning surfaces is presented. The current understanding of physics of wetting leading to surfaces with predictive, controllable and reversible wettability is first presented. The review then focuses on materials, mainly metal oxides and their composites, employed for self-cleaning applications. It is shown that, although conventionally oxides and polymers are considered for self-cleaning applications, recent developments point toward the use of artificially engineered surfaces with hierarchical roughness. Applications of self-cleaning films in nonconventional areas such as protection of fabrics, solar cells and structures related to cultural heritage are discussed. The review ends with an outlook for the future in terms of science and technology of self-cleaning surfaces.

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Photocatalytic construction and building materials: From fundamentals to applications

Cited by 653 publications

References 45 publications

Review on Characterization and Mechanical Performance of Self-cleaning Concrete

Review on Characterization and Mechanical Performance of Self-cleaning Concrete

Highly active photocatalytic paint for NOx abatement under real-outdoor conditions

Metal oxide thin films and nanostructures for self-cleaning applications: current status and future prospects

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