Enhanced photodegradation in metal oxide nanowires with Co-doped surfaces under a low magnetic field

0550021 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Lin, J.X. - Thaomonpun, J. - Thongpool, V. - Chen, W.J. - Huang, C.H. - Sun, S. J. - Remeš, Zdeněk - Tseng, Y.T. - Liao, Y.F. - Hsu, H.S.
Enhanced photodegradation in metal oxide nanowires with Co-doped surfaces under a low magnetic field.
ACS Applied Materials and Interfaces. Roč. 13, č. 19 (2021), s. 23173-23180. ISSN 1944-8244. E-ISSN 1944-8252
Grant CEP: GA ČR GC19-02858J
Institucionální podpora: RVO:68378271
Klíčová slova: photocatalysis * spin-dependent density of states * magnetic circular dichroism * magneto-X-ray absorption near-edge spectra * surface-doping
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 10.383, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1021/acsami.1c03397

The enhancement of photodegradation in the Co rich-doping of ZnO nanowire surfaces (Co2+/ZnO NWs) prepared with a combination method of Co sputtering on ZnO NWs and post immersion in deionized water, the latter of which exploits the nature of the hydrophilic–hydrophobic transitions at the ZnO surfaces as a result of the diffusion of Co atoms. Due to the controllable spin-dependent density of states (DOS) induced by the Co2+, the photodegradation of methylene blue dye can be further boosted by approximately 90% through the use of a conventional permanent magnet with a relatively low magnetic field strength of approximately 0.15 T. The reliability of the spin polarization–modulation scheme by means of surface doping, as experimentally evidenced by the magnetic response in the X-ray absorption measurements and magnetic circular dichroism, offers the opportunity to create highly efficient catalysts by engineering surfaces based on tailoring their spin-dependent DOS.
Trvalý link: http://hdl.handle.net/11104/0326080