High photocatalytic efficiency of a ZnO nanoplate/Fe2O3 nanospindle hybrid using visible light for methylene blue degradation.
| Title: | High photocatalytic efficiency of a ZnO nanoplate/Fe2O3 nanospindle hybrid using visible light for methylene blue degradation. |
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| Authors: | Dien ND; Faculty of Occupational Safety and Health, Vietnam Trade Union University 169 Tay Son Street, Dong Da District Hanoi City Vietnam.; Pham TTH; Faculty of Chemistry, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam.; Vu XH; Institute of Science and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam hoavx@tnus.edu.vn.; Xuan VT; Faculty of Chemistry, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam.; Nguyen TTT; Faculty of Chemistry, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam.; Trang TT; Institute of Science and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam hoavx@tnus.edu.vn.; Van Hao N; Institute of Science and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam hoavx@tnus.edu.vn.; Nga PT; Institute of Science and Technology, TNU-University of Sciences Tan Thinh Ward Thai Nguyen City Vietnam hoavx@tnus.edu.vn.; Faculty of Secondary School, Hoa Lu University 2 Xuan Thanh Street, Ninh Nhat Commune Ninh Binh City Vietnam.; Kim Chi TT; Institute of Materials Science, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Ha Noi City Vietnam.; Giang TTH; Institute of Materials Science, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Road, Cau Giay District Ha Noi City Vietnam.; Toan ND; Centre for Quantum Electronics, Institute of Physics, Vietnam Academy of Science and Technology 10 Dao Tan, Ba Dinh District Ha Noi City Vietnam. |
| Source: | RSC advances [RSC Adv] 2024 Sep 04; Vol. 14 (38), pp. 28244-28259. Date of Electronic Publication: 2024 Sep 04 (Print Publication: 2024). |
| Publication Type: | Journal Article |
| Language: | English |
| Journal Info: | Publisher: Royal Society of Chemistry Country of Publication: England NLM ID: 101581657 Publication Model: eCollection Cited Medium: Internet ISSN: 2046-2069 (Electronic) Linking ISSN: 20462069 NLM ISO Abbreviation: RSC Adv Subsets: PubMed not MEDLINE |
| Imprint Name(s): | Original Publication: Cambridge [England] : Royal Society of Chemistry, [2011]- |
| Abstract: | In this work, ZnO nanoplates and Fe2O3 nanospindles were successfully fabricated via a simple hydrothermal method using inorganic salts as precursors. The ZnO/Fe2O3 hybrid was fabricated using a mechanical mixture of two different ZnO : Fe2O3 weight ratios to investigate the effect of weight ratio on catalytic properties. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images showed that ZnO nanoplates (NPls) are about 20 nm thick with lateral dimensions of 100 × 200 nm, and Fe2O3 nanospindles (NSs) are about 500 nm long and 50 nm wide. X-ray diffraction (XRD) patterns revealed the successful formation of the ZnO, Fe2O3, and ZnO/Fe2O3 samples and indicated that their crystallite sizes varied from 20 to 29 nm depending on the ZnO : Fe2O3 weight ratio. Ultraviolet-visible (UV-vis) spectra showed that the bandgap energies of ZnO and Fe2O3 were 3.15 eV and 2.1 eV, respectively. Energy dispersive X-ray spectroscopy (EDS) results revealed the successful combination of ZnO and Fe2O3. Photocatalytic activity of the materials was evaluated through the degradation of methylene blue (MB) in aqueous solution under green light-emitting diode (GLED) irradiation. The results indicated that the ZnO/Fe2O3 composite showed a remarkable enhanced degradation capacity compared to bare ZnO NPls and Fe2O3 NSs. The ZnO : Fe2O3 = 3 : 2 sample demonstrated the best performance among all samples under identical conditions with a degradation efficiency of 99.3% for MB after 85 min. The optimum photocatalytic activity of the sample with ZnO : Fe2O3 = 3 : 2 was nearly 3.6% higher than that of the pure ZnO sample and 1.12 times more than that of the pristine Fe2O3 sample. Moreover, the highest photo-degradation was obtained at a photocatalyst dosage of 0.25 g l-1 in dye solution.; (This journal is © The Royal Society of Chemistry.) |
| Competing Interests: | The authors declare that they have no competing financial interests in this paper. |
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| Entry Date(s): | Date Created: 20240905 Latest Revision: 20240906 |
| Update Code: | 20260130 |
| PubMed Central ID: | PMC11372561 |
| DOI: | 10.1039/d4ra04230a |
| PMID: | 39234520 |
| Database: | MEDLINE |
Journal Article