Search
Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation
Abstract
A TiO2–ZnO binary oxide system (with molar ratio TiO2:ZnO = 8:2) was synthesized by a hydrothermal method, assisted by calcination at temperatures of 500, 600 and 700 °C, using zinc citrate as the precursor of ZnO. The morphology (SEM, TEM), crystalline structure (XRD, Raman spectroscopy), diffuse reflectance spectra (DRS), chemical surface composition (EDXRF), porous structure parameters (low-temperature N2 sorption) and characteristic functional groups (FT-IR) of the TiO2–ZnO oxide materials were comprehensively analyzed. The novelty of this work is the observation of the coexistence of the crystalline structures of anatase and ZnTiO3 in TiO2–ZnO oxide materials. Moreover, it is shown that the obtained materials absorb visible radiation. The key stage of the study was the evaluation of the photocatalytic activity of the TiO2–ZnO binary oxide systems in the degradation of model organic pollutants: C.I. Basic Red 1, C.I. Basic Violet 10, C.I. Basic Blue 3 and 4-nitrophenol. For all synthesized materials, a high efficiency of degradation of the model organic impurities was demonstrated. The results show that the synthesized products may be materials of interest for use in the degradation of organic pollutants. Moreover, the kinetics of the photocatalytic degradation of selected organic compounds were determined based on the Langmuir–Hinshelwood equation, assuming a pseudo-first-order (PFO) reaction.
Citations
-
4 8
CrossRef
-
0
Web of Science
-
4 8
Scopus
Authors (5)
-
Adam Kubiak
-
Katarzyna Siwińska-Ciesielczyk dr hab. inż.
-
Teofil Jesionowski
Cite as
Full text
- Publication version
- Accepted or Published Version
- License
-
open in new tab
Keywords
Details
- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
no. 25,
edition 1572-8757,
pages 309 - 325,
ISSN: 0929-5607 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Kubiak A., Siwińska-Ciesielczyk K., Bielan Z., Zielińska-Jurek A., Jesionowski T.: Synthesis of highly crystalline photocatalysts based on TiO2 and ZnO for the degradation of organic impurities under visible-light irradiation// ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY. -Vol. 25, (2019), s.309-325
- DOI:
- Digital Object Identifier (open in new tab) 10.1007/s10450-019-00011-x
- Verified by:
- Gdańsk University of Technology
seen 229 times
Recommended for you
Microwave-assisted synthesis of a TiO2-CuO heterojunction with enhanced photocatalytic activity against tetracycline
- A. Kubiak,
- Z. Bielan,
- M. Kubacka
- + 7 authors
Synthesis, characteristics, and photocatalytic activity of zinc oxide nanoparticles stabilized on the stone surface for degradation of metronidazole from aqueous solution
- A. N. Alibeigi,
- N. Javid,
- M. Amiri Gharaghani
- + 2 authors
Photocatalytic activity of zinc oxide nanorods incorporated graphitic carbon nitride catalyst
- S. Dharani,
- A. Saravana Vadivu,
- A. Zielińska-Jurek
- + 3 authors
S-scheme heterojunction Bi2O3-ZnO/Bentonite clay composite with enhanced photocatalytic performance
- V. Landge,
- S. Sonawane,
- M. Sivakumar
- + 3 authors