Tuning the photocatalytic properties of sol-gel-derived single, coupled, and alloyed ZnO-TiO2 nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985882%3A_____%2F19%3A00518307" target="_blank" >RIV/67985882:_____/19:00518307 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15310/19:73594545
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs11164-019-03900-6" target="_blank" >https://link.springer.com/article/10.1007%2Fs11164-019-03900-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s11164-019-03900-6" target="_blank" >10.1007/s11164-019-03900-6</a>
Alternative languages
Result language
angličtina
Original language name
Tuning the photocatalytic properties of sol-gel-derived single, coupled, and alloyed ZnO-TiO2 nanoparticles
Original language description
Existing industrial titania production lines and their intermediate products are economically attractive precursors for synthesis of highly concentrated TiO2 coating sols and soluble nanopowders. Refluxing of aliphatic alcoholic TiOCl2 solutions (with up to 500g TiO2/L) allows straightforward formation of nonaggregated anatase nanocrystals with size between 5 and 8nm. Surface modification of these nanoparticles with organosilanes shifts the pH value of point of zero charge from initially 5.3 down to around 2.8. At appropriate Ti/Si ratios, complete suppression of the anatase ultraviolet (UV) photoactivity is possible. Furthermore, we address the optical and photocatalytic data of transparent nanocrystalline layers produced from superconcentrated ZnxTiyOz heterosols. Depending on the Zn/Ti ratio and processing temperature, colorless cubic c-ZnTiO3 and c-Zn2TiO4 spinel nanophases or coupled r-ZnTiO3-ilmenite/r-TiO2-rutile heterojunctions (Zn/Ti=2/3) can be produced. The cubic spinel films are indirect semiconductors showing band gap transition of around 3.7eV. In contrast, r-ZnTiO3-ilmenite films have slightly lower band gap of around 3.6eV. Organic dye photodegradation studies reveal the highest catalytic activity for the coupled r-ZnTiO3-ilmenite/r-TiO2-rutile systems compared with colored (nitridated) or colorless cubic spinel film samples
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/EF16_019%2F0000754" target="_blank" >EF16_019/0000754: Nanotechnologies for Future</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Research on Chemical Intermediates
ISSN
0922-6168
e-ISSN
—
Volume of the periodical
45
Issue of the periodical within the volume
8
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
12
Pages from-to
4193-4204
UT code for WoS article
000477043300019
EID of the result in the Scopus database
2-s2.0-85068190448