Andreia MOLEA


18-12 PROPRIETĂłILE MORFOLOGICE ALE DIOXIDULUI DE TITAN

MORPHOLOGICAL PROPERTIES OF TITANIUM DIOXIDE
This paper presents a series of literature data related to morphology of
titanium dioxide obtained by hydrolysis of alkoxides. Morphological properties of
titanium dioxide depend on particle size, specific surface area and particle
distribution. Particle size is influenced directly by obtaining and calcinations
temperature, the environment in which the hydrolysis reaction takes place and
surfactants.
Cuvinte cheie: dioxid de titan, proprietăŃi morfologice, microscopie
electronică de transmisie

12 PROPRIETĂłILE MORFOLOGICE ALE DIOXIDULUI


18-14 PROPRIETĂłILE STRUCTURALE ALE DIOXIDULUI DE TITAN

STRUCTURAL PROPERTIES OF TITANIUM DIOXIDE
This paper presents a series of literatures data on the structure of
titanium dioxide obtained by sol-gel technique. Obtaining a crystalline structure of
TiO2 depends on temperature and the thermal treatment applied later and also
depend on the catalysts used in the preparation process. Photocatalytic
properties of titanium dioxide are given by anatas crystalline structure, a structure
obtained by heat treatment between 100 0C and 500 0C.
Cuvinte cheie: dioxid de titan, difracŃie de raze X, proprietăŃi structurale

14 PROPRIETĂłILE STRUCTURALE ALE DIOXIDULUI


18-15 OBłINEREA DIOXIDULUI DE TITAN PRIN METODA SOL-GEL. PROCESE DE HIDROLIZĂ

OBTAINING OF TITANIUM DIOXIDE BY SOL-GEL
METHOD. HYDROLYSIS PROCESSES
The paper presents a comparative study of a series of data from
literature related to the obtaining of titanium dioxide by sol-gel method by
hydrolysis processes. It presents the main parameters of the production
process, the heat treatment applied in order to obtain crystalline phases of
interest. Also the paper summarizes the treatment methods applied in order to
avoid the process of agglomeration of formed particles.
Cuvinte cheie: dioxid de titan, metoda sol-gel, proces de hidroliză
proprietăŃi fotocatalitice

15 OBłINEREA DIOXIDULUI DE TITAN PRIN METODA