Potential-dependent surface-enhanced resonance raman spectroscopy at nanostructured TiO2: A case study on cytochrome b5
Han XX, Koehler C, Kozuch J, Kuhlmann U, Paasche L, Sivanesan A, Weidinger IM, Hildebrandt P (2013)
Publication Type: Journal article
Publication year: 2013
Journal
Book Volume: 9
Pages Range: 4175-4181
Journal Issue: 24
DOI: 10.1002/smll.201301070
Abstract
Nanostructured titanium dioxide (TiO2) electrodes, prepared by anodization of titanium, are employed to probe the electron-transfer process of cytochrome b5 (cyt b5) by surface-enhanced resonance Raman (SERR) spectroscopy. Concomitant with the increased nanoscopic surface roughness of TiO2, achieved by raising the anodization voltage from 10 to 20 V, the enhancement factor increases from 2.4 to 8.6, which is rationalized by calculations of the electric field enhancement. Cyt b 5 is immobilized on TiO2 under preservation of its native structure but it displays a non-ideal redox behavior due to the limited conductivity of the electrode material. The electron-transfer efficiency which depends on the crystalline phase of TiO2 has to be improved by appropriate doping for applications in bioelectrochemistry. Nanostructured TiO2 electrodes are employed to probe the electron-transfer process of cytochrome b5 by surface-enhanced resonance Raman spectroscopy. Concomitant with the increased nanoscopic surface roughness of TiO2, the enhancement factor increases, which can be attributed to the electric field enhancement. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Involved external institutions
How to cite
APA:
Han, X.X., Koehler, C., Kozuch, J., Kuhlmann, U., Paasche, L., Sivanesan, A.,... Hildebrandt, P. (2013). Potential-dependent surface-enhanced resonance raman spectroscopy at nanostructured TiO2: A case study on cytochrome b5. Small, 9(24), 4175-4181. https://doi.org/10.1002/smll.201301070
MLA:
Han, Xiao Xia, et al. "Potential-dependent surface-enhanced resonance raman spectroscopy at nanostructured TiO2: A case study on cytochrome b5." Small 9.24 (2013): 4175-4181.
BibTeX: Download
Germany (DE)