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Preparation and characterization of N-doped ZnO and N-doped TiO2 beads for photocatalytic degradation of phenol and ammonia.
| Content Provider | Europe PMC |
|---|---|
| Author | Mandor, Hagar Amin, Nevine K. Abdelwahab, Ola El-Ashtoukhy, El-Sayed Z. |
| Abstract | N-doped ZnO beads (NZB) and N-doped TiO2 beads (NTB) were synthesized via a modified sol–gel technique utilizing chitosan (CS)/polyvinyl alcohol (PVA) hydrogel beads as basic support for photocatalyst. Urea was used as a source of nitrogen in the preparation of N-doped ZnO beads, while ammonium acetate, CH3COONH4, was used as a nitrogen source in the production of N-doped TiO2 beads. The characteristics of synthesized beads were identified by scanning electron microscope (SEM), X-ray photoelectron spectroscopy analysis (XPS), X-ray diffraction (XRD), N2 adsorption–desorption isotherms, BET surface area, Fourier transform infrared (FT-IR) measurements, and diffuse reflectance spectroscopy (DRS) studies. The use of the nitrogen doping method for photocatalyst was performed to adjust the bandgap and electrical properties of ZnO and TiO2 by establishing acceptor defects. NZB and NTB with the intrinsic donor defect of oxygen vacancy and the nitrogen-to-oxygen acceptor defect could be activated by a less-energy UV consumption for efficient pollutant degradation. The results indicated that the as-synthesized NZB achieved much higher degradation activity than NTB, commercial ZnO, and TiO2 in the decomposition of a binary mixture composed of ammonia and phenol under UV light irradiation. |
| ISSN | 09441344 |
| Volume Number | 29 |
| PubMed Central reference number | PMC9374654 |
| Issue Number | 37 |
| PubMed reference number | 35347620 |
| Journal | Environmental Science and Pollution Research International [Environ Sci Pollut Res Int] |
| e-ISSN | 16147499 |
| DOI | 10.1007/s11356-022-19421-6 |
| Language | English |
| Publisher | Springer Berlin Heidelberg |
| Publisher Date | 2022-03-27 |
| Publisher Place | Berlin/Heidelberg |
| Access Restriction | Open |
| Rights License | Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2022 |
| Subject Keyword | Photocatalytic degradation N-doped ZnO N-doped TiO2 Phenol Ammonia |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Health, Toxicology and Mutagenesis Medicine |
