Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

Home > Press > Scientists Produce Self-Cleaning Coatings on Glass Substrate

Abstract:
Iranian researchers succeeded in the production of silica/titania/silica three-layer self-cleaning coating (SiO2/TiO2/SiO2) on glass substrate.

Scientists Produce Self-Cleaning Coatings on Glass Substrate

Tehran, Iran | Posted on March 17th, 2014

The coating has more stable phydrophilic and photocatalytic properties and much more transparency than titania coating.

In recent years, self-cleaning properties of titanium dioxide thin films have attracted the attention of many industrialists active in the field of building construction and optical devices. This specification is considered to be the result of combination of superhydrophilicity and photocatalytic properties of the thin film. In this study, a three-layer coating of SiO2 / TiO2 / SiO2 was deposited on glass substrate through vapor physical deposition method by using electron beam (EB-PVD). Next, hydrophilicity, photocatalytic and self-cleaning properties of the produced layer were compared to those of SiO2/TiO2 film.

The contact angle between water and the surface of the film exposed to UV light was measured, and the results showed that contact angle in SiO2/TiO2/SiO2 film had a quicker reduction than in SiO2/TiO2 film. In addition, the thin film of SiO2/TiO2/ SiO2 had conserved its hydrophilic properties after being kept in a dark place in comparison with SiO2/TiO2 film. It was also observed that the three-layered film that had a layer of SiO2 deposited on its top had higher photocatalytic activity than the other two films.

In general, hydrophilic and photocatalytic properties of the three-layered silica/titania/silica film showed a significant increase in comparison with single-layer coating film of titania and bi-layer film of silica/titania. The three-layered film also had higher optical transparency, which resulted in better self-cleaning properties for the film. Therefore, this film is very desirable to be used in construction industry, automobile manufacturing and optical devices.

Results of the research have been published in International Journal of Materials Research, vol. 104, issue 12, December 2013, pp. 1263-1266.

####

For more information, please click here

Copyright © Fars News Agency

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Thin films

Dual-function nanorod LEDs could make multifunctional displays February 11th, 2017

NREL research pinpoints promise of polycrystalline perovskites February 8th, 2017

New material with ferroelectricity and ferromagnetism may lead to better computer memory December 21st, 2016

ANU invention to inspire new night-vision specs December 7th, 2016

Discoveries

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Announcements

Rice U. refines filters for greener natural gas: New study defines best materials for carbon capture, methane selectivity March 23rd, 2017

Artificial photosynthesis steps into the light: Rice University lab turns transition metals into practical catalyst for solar, other applications March 23rd, 2017

Scientists discover new 'boat' form of promising semiconductor: GeSe Uncommon form attenuates semiconductor's band gap size March 23rd, 2017

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

Tools

Caught on camera -- chemical reactions 'filmed' at the single-molecule level March 22nd, 2017

CRMGroup in Belgium uses a Deben three point bending stage in the development of new steel & coated steel products for automotive and other industrial applications March 21st, 2017

Next-gen steel under the microscope March 18th, 2017

Novel nozzle saves crystals: Double flow concept widens spectrum for protein crystallography March 17th, 2017

Industrial

Rare-earths become water-repellent only as they age March 22nd, 2017

CRMGroup in Belgium uses a Deben three point bending stage in the development of new steel & coated steel products for automotive and other industrial applications March 21st, 2017

Imaging the inner workings of a sodium-metal sulfide battery for first time: Understanding how the structural and chemical makeup of the material changes during the charge/discharge process could help scientists advance battery design for future energy storage needs March 9th, 2017

Rice lab expands palette for color-changing glass: Nanophotonics team creates low-voltage, multicolor, electrochromic glass March 8th, 2017

Photonics/Optics/Lasers

Electro-optical switch transmits data at record-low temperatures: Operating at temperatures near absolute zero, switch could enable significantly faster data processing with lower power consumption March 20th, 2017

AIM Photonics Welcomes Coventor as Newest Member: US-Backed Initiative Taps Process Modeling Specialist to Enable Manufacturing of High-Yield, High-Performance Integrated Photonic Designs March 16th, 2017

Optical fingerprint can reveal pollutants in the air: Researchers at Chalmers University of Technology have proposed a new, sophisticated method of detecting molecules with sensors based on ultra-thin nanomaterials March 15th, 2017

MIPT physicists predict the existence of unusual optical composites March 10th, 2017

Construction

Next-gen steel under the microscope March 18th, 2017

Graphene foam gets big and tough: Rice University's nanotube-reinforced material can be shaped, is highly conductive February 13th, 2017

New low-cost technique converts bulk alloys to oxide nanowires January 24th, 2017

Rice U probes ways to turn cement's weakness to strength: Rice University lab's calculations show new mechanisms to induce strength, ductility into concrete January 6th, 2017

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project