Visible Light Photo-catalysts Based on Titanium Dioxide and their Potential Applications – an Introduction

Autor:	S. P. Blöß
Rok vydání:	2007
Předmět:	General Chemical Engineering Inorganic chemistry chemistry.chemical_element General Chemistry Condensed Matter Physics Photochemistry Oxygen Chemical reaction Catalysis chemistry.chemical_compound chemistry Carbon dioxide Titanium dioxide Carbon Visible spectrum Carbon monoxide
Zdroj:	Tenside Surfactants Detergents. 44:266-269
ISSN:	2195-8564 0932-3414
Popis:	Titanium dioxide is a well-known UV-absorber but it can also be used for initiating chemical reactions by ultra-violet radiation. By doping this semiconductor with carbon, interstate energy levels between the energy bands are formed. This offers the possibility not only to use ultra-violet light, but also visible light to activate the catalyst. In a cyclic photo-catalytic process inorganic radicals are generated from the surrounding atmospheric water and oxygen. These radicals then oxidize organic compounds e. g. aromatic and aliphatic hydrocarbons or inorganic molecules e. g. nitrogen oxides and carbon monoxide, respectively, to carbon dioxide, nitrates and water as end-products, which can readily be assimilated by vegetation. Potential applications are found in self-cleaning surfaces and the reduction of air and water pollution, where its superhydrophilicy and high specific surface areas can be utilized.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::aa9ac7381de0daa11034d9d4ec156c78 https://doi.org/10.3139/113.100346 Zobrazit plný text záznamu