Ultraporous nanocrystalline TiO2-based films: synthesis, patterning and application as anti-reflective, self-cleaning, superhydrophilic coatings

Nanoscale ◽  
2015 ◽  
Vol 7 (46) ◽  
pp. 19419-19425 ◽  
Author(s):  
Marco Faustini ◽  
Antonin Grenier ◽  
Guillaume Naudin ◽  
Ronghua Li ◽  
David Grosso
Keyword(s):  
Nanocrystalline Tio2 ◽  
Self Cleaning ◽  
Hydrophilic Coatings

Ultraporous anatase-based TiO2 films are synthesized, patterned and used as multifunctional anti-reflective, self-cleaning, super-hydrophilic coatings.

Self-cleaning photoactive cotton fabric modified with nanocrystalline TiO2 for efficient degradation of volatile organic compounds and DNA contaminants

2020 ◽  
Vol 388 ◽  
pp. 124167 ◽  
Author(s):  
Maria Solovyeva ◽  
Dmitry Selishchev ◽  
Svetlana Cherepanova ◽  
Grigory Stepanov ◽  
Evgeny Zhuravlev ◽  
...  
Keyword(s):  
Volatile Organic Compounds ◽  
Organic Compounds ◽  
Cotton Fabric ◽  
Nanocrystalline Tio2 ◽  
Volatile Organic ◽  
Self Cleaning

Research Progress of the Polyurethane-nTiO2 Self-Cleaning Coating

2014 ◽  
Vol 633-634 ◽  
pp. 261-265
Author(s):  
Lin Wang ◽  
Yi Shang ◽  
Xia Xiao ◽  
Bo Mu ◽  
Guang Wen Zhang
Keyword(s):  
Active Sites ◽  
Uv Light ◽  
Polymer Nanocomposite ◽  
Research Progress ◽  
Photo Catalysis ◽  
Environmental Friendly ◽  
Stable Chemical ◽  
Industrial Health ◽  
Self Cleaning ◽  
Hydrophilic Coatings

Self-cleaning coatings are getting tremendous attention from both the academic interest and industrial communities. Among the two kinks of self-cleaning coatings, which are super-hydrophobic and super-hydrophilic coatings, the super-hydrophilic self-cleaning coating comprised of TiO2/doped-TiO2has four unique features when exposed to ultraviolet (UV) light or sunlight, which are self-cleaning property, anti-bacterial properties, environmental friendly, and visible-light photocatalysts and indoor usage. And PU-TiO2self-cleaning coating produced by “grafting” method, which can accomplish stable chemical attachment between the nTiO2and the PU substrates, may potentially show an increase of the thermal properties, an increase of the amount of active sites for photo-catalysis, and a decrease in the self-degradation of the resulting polymer nanocomposite than the traditional mechanical shear method. There is a tremendous scope for the application of polyurethane-nTiO2self-cleaning coatings in industrial, health care and consumer sectors.

scholarly journals Moving toward Smart Cities: Evaluation of the Self-Cleaning Properties of Si-Based Consolidants Containing Nanocrystalline TiO2 Activated by Either UV-A or UV-B Radiation

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2577
Author(s):  
José Santiago Pozo-Antonio ◽  
Daniel Noya-Pintos ◽  
Patricia Sanmartín
Keyword(s):  
Spectral Region ◽  
Smart Cities ◽  
The Self ◽  
Ethyl Silicate ◽  
Main Peak ◽  
Nanocrystalline Tio2 ◽  
Color Changes ◽  
Self Cleaning ◽  
Coated Surfaces ◽  
Nanosized Silica

This study evaluated the self-cleaning ability and durability of Si-based consolidants (an ethyl silicate consolidant and a consolidant based on nanosized silica) spiked with nanocrystalline TiO2 activated by either UV-A radiation (spectral region between 340 and 400 nm, and main peak at 365 nm) or UV-B radiation (spectral region between 270 and 420 nm, and main peak at 310 nm). Granite samples were coated with consolidant, to which nanocrystalline TiO2 was added at different concentrations (0.5, 1, and 3%, by wt.). Diesel soot was then applied to the coated surfaces, and the samples were exposed to UV-A or UV-B radiation for 1650 h. The surface color changes, relative to the color of untreated granite, were determined every 330 h by color spectrophotometry. Slight color changes indicated a recovery of the reference color due to the degradation of the soot. The final surfaces of both the untreated and treated surfaces were compared by stereomicroscopy and scanning electron microscopy. The main findings were that: (1) In general, the consolidant containing nanosized silica induced the most intense photocatalytic activity. In the more compact xerogel coating formed by the nanosized silica, more TiO2 nanoparticles were available to interact with the radiation. (2) For all consolidant mixtures, soot degradation remained constant or decreased over time, except with ethyl silicate with 0.5 wt % TiO2 (no self-cleaning capacity). (3) Soot degradation increased with the concentration of TiO2. (4) The UV-B radiation was the most effective in terms of soot degradation, except for the surface coated with the ethyl silicate and 3% wt. TiO2.

scholarly journals Self-Cleaning Performance of Super-Hydrophilic Coatings for Dust Deposition Reduction on Solar Photovoltaic Cells

Coatings ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 1059
Author(s):  
Wenjun Zhao ◽  
Hao Lu
Keyword(s):  
Tilt Angle ◽  
Power Efficiency ◽  
Dust Particles ◽  
Solar Photovoltaic ◽  
Solar Pv ◽  
Dust Deposition ◽  
Cleaning Efficiency ◽  
Bare Glass ◽  
Self Cleaning ◽  
Hydrophilic Coatings

Dust deposition on solar photovoltaic (PV) cell surface will significantly decrease the PV power efficiency, as the transmittance of the solar cells would be greatly decreased by the deposited dust particles. This paper aims to study the anti-dust performance of super-hydrophilic coatings for the solar PV cells with water spraying condition. The solar cell covering glass was treated to be super-hydrophilic and compared with the bare glass sample. It was found that many dust particles adhere and aggregate on the uncoated glass while the particles deposited on the super-hydrophilic glass surface are densely distributed. When the water spraying process was conducted, the dust deposition mass for the bare and the coated glass samples are both reduced obviously with the increase time of water spraying. In addtion, dust deposition mass is significantly reduced with the increase of deposition and spraying tilt angles. The self-cleaning efficiency of super-hydrophilic coating on dust deposition is 92% higher than the bare glass cases. The spectral transmittance of glass samples for all the coated cases are significantly higher than that for all the bare cases. The maximum transmittance improvement can reach 26.5% when the deposition tilt angle is 30° and the spraying tilt angle is 60°.

A dual function nanocrystalline TiO2 platform for solar photocatalysis and self cleaning application

Solar Energy ◽  
2017 ◽  
Vol 155 ◽  
pp. 1380-1388 ◽  
Author(s):  
Binu Naufal ◽  
Sanjay Gopal Ullattil ◽  
Pradeepan Periyat
Keyword(s):  
Dual Function ◽  
Nanocrystalline Tio2 ◽  
Solar Photocatalysis ◽  
Self Cleaning

Effect of structure of porous materials on their self-cleaning from a liquid pha

2018 ◽  
Vol 4 (4) ◽  
pp. 52-63
Author(s):  
V. Yu. Shumskaya ◽  
S. F. Zhandarov ◽  
L. A. Kalinin ◽  
L. F. Ivanov ◽  
V. V. Snezhkov ◽  
...  
Keyword(s):  
Porous Materials ◽  
Self Cleaning ◽  
Effect Of Structure

DESIGN, MANUFACTURING AND EXPERIMENTAL TESTING OF A SELF-CLEANING EXIT PORT MECHANISM FOR A SOLAR REACTOR

2019 ◽  
Author(s):  
Joppe Rutten ◽  
Jens Verschoren ◽  
Nesrin Ozalp ◽  
Cédric Ophoff ◽  
David Moens
Keyword(s):  
Experimental Testing ◽  
Solar Reactor ◽  
Exit Port ◽  
Self Cleaning
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