Surface modification of nano-TiO2 with Cu nanoparticles
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F25%3A00639354" target="_blank" >RIV/61388980:_____/25:00639354 - isvavai.cz</a>
Alternative codes found
RIV/44555601:13440/25:43899359 RIV/61989100:27360/25:10258485
Result on the web
<a href="https://hdl.handle.net/11104/0370932" target="_blank" >https://hdl.handle.net/11104/0370932</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.ceramint.2025.08.447" target="_blank" >10.1016/j.ceramint.2025.08.447</a>
Alternative languages
Result language
angličtina
Original language name
Surface modification of nano-TiO2 with Cu nanoparticles
Original language description
This study presents a practical and environmentally friendly approach for modifying TiO2 with metallic copper (Cu) nanoparticles (NPs), using a low-temperature chemical process combined with ultrasonication, without the use of a reducing agent. The resulting Cu-modified TiO2 photocatalysts were systematically characterised and tested for the degradation of Acid Orange 7 (AO7) and Rhodamine B (RhB). Diffuse reflectance spectroscopy (DRS UV–VIS) revealed a progressive narrowing of the band gap from 3.23 to 3.11 eV with increasing Cu content (0.5–5 wt%). Among the prepared samples, the material containing 0.5 wt% Cu exhibited the highest photocatalytic activity, achieving up to 99 % degradation of RhB and 98 % of AO7 under UV irradiation. The effects of irradiation sequence and duration were also evaluated. A three-step protocol, comprising 30 min of dark adsorption, followed by 30 min of UV (360 nm) or VIS (420 nm), and then 30 min of VIS (420 nm) or UV (360 nm) irradiation, was found to enhance degradation efficiency. Under combined irradiation conditions, RhB degradation reached 99 % for UV followed by VIS (UV + VIS) and 95 % for VIS followed by UV (VIS + UV), while AO7 showed a consistent degradation efficiency of 58 % for both irradiation sequences. This work demonstrates that even minimal Cu loading (0.5 wt%) can significantly enhance the photocatalytic performance of TiO2. The simple, low-cost synthesis method and strong photocatalytic response under UV and UV/VIS conditions highlight its potential for wastewater treatment and environmental remediation applications.
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
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ceramics International
ISSN
0272-8842
e-ISSN
1873-3956
Volume of the periodical
51
Issue of the periodical within the volume
27 A
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
52419-52432
UT code for WoS article
001607342100042
EID of the result in the Scopus database
2-s2.0-105015549490