Photocatalytic oxide films in the built environment
2014 (English)In: INERA Workshop: Transition Metal Oxide Thin Films-functional Layers in "Smart windows" and Water Splitting Devices / [ed] Assoc. Prof. Dr.Tatyana Ivanova, Prof. DSc Kostadinka Gesheva, Prof. DSc Hassan Chamatti, Assoc. Prof. Dr. Georgi Popkirov, Institute of Physics (IOP), 2014, 012009- p.Conference paper (Refereed)
The possibility to increase human comfort in buildings is a powerful driving force for the introduction of new technology. Among other things our sense of comfort depends on air quality, temperature, lighting level, and the possibility of having visual contact between indoors and outdoors. Indeed there is an intimate connection between energy, comfort, and health issues in the built environment, leading to a need for intelligent building materials and green architecture. Photocatalytic materials can be applied as coatings, filters, and be embedded in building materials to provide self-cleaning, antibacterial, air cleaning, deodorizing, and water cleaning functions utilizing either solar light or artificial illumination sources – either already present in buildings, or by purposefully designed luminaries. Huge improvements in indoor comfort can thus be made, and also alleviate negative health effects associated with buildings, such as the sick-house syndrome. At the same time huge cost savings can be made by reducing maintenance costs. Photocatalytic oxides can be chemical modified by changing their acid-base surface properties, which can be used to overcome deactivation problems commonly encountered for TiO2 in air cleaning applications [2, 3]. In addition, the wetting properties oxides can be tailored by surface chemical modifications and made e.g. oleophobic and water repellent . Here we show results of surface acid modified TiO2 coatings on various substrates. In particular, we show that advanced surface treatment of photocatalytic cement yields surfaces with beneficial self-cleaning properties by means of photo-fixation of surface sulfate groups. We propose that such approaches are feasible for a number of applications in the built environment, including windows, tiles, sheet metals, plastics, etc.
Place, publisher, year, edition, pages
Institute of Physics (IOP), 2014. 012009- p.
, Journal of Physics: Conference Series, ISSN 1742-6588 ; 559
Engineering and Technology Materials Engineering Chemical Engineering Nano Technology
Research subject Chemistry with specialization in Materials Chemistry; Engineering Science with specialization in Nanotechnology and Functional Materials; Engineering Science with specialization in Solid State Physics; Engineering Science with specialization in Materials Science
IdentifiersURN: urn:nbn:se:uu:diva-237533DOI: 10.1088/1742-6596/559/1/012009ISI: 000346420600009OAI: oai:DiVA.org:uu-237533DiVA: diva2:768209
INERA Workshop: Transition Metal Oxide Thin Films-functional Layers in "Smart windows" and Water Splitting Devices. Parallel session of the 18th International School on Condensed Matter Physics
ProjectsBuilt environment, photocatalysis, wetting, surfaces, oxides
FunderEU, FP7, Seventh Framework Programme, NMP4-SL-2013-608950