Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2006 Sep;69(1):34-40.
doi: 10.1016/j.bioelechem.2005.10.003. Epub 2006 Jan 4.

Electrochemical study of photovoltaic effect of nano titanium dioxide on hemoglobin

Hui Zhou  1 , Xin Gan, Tao Liu, Qianlu Yang, Genxi Li
Affiliations

Electrochemical study of photovoltaic effect of nano titanium dioxide on hemoglobin

Hui Zhou et al. Bioelectrochemistry. 2006 Sep.

Abstract

Nano titanium dioxide (TiO2) and hemoglobin (Hb) were co-modified on pyrolytic graphite (PG) electrode to study the photovoltaic effect of TiO2 nanoparticles (NPs) on the electron transfer reactivity and catalytic activity of the protein. By means of cyclic voltammetry (CV) and FTIR measurements, the study was characterized in both aerobic and anaerobic environments. Experimental results revealed that the factors which mainly interacted with Hb were electron/hole pairs and reactive oxygen species (ROS) generated by the photovoltaic effect when TiO2 NPs were irradiated under ultraviolet (UV) light. The electron/hole pairs generated on the surface of TiO2 would influence the structure of Hb gently, so the electron transfer reactivity and catalytic ability of the protein slightly changed. In contrast, ROS interacted with Hb intensively, which brought in much conformational change to Hb and its active centers, and even cause some damage. Consequently, the electron transfer reactivity and catalytic activity of Hb changed with a process of increasing initially and decreasing afterwards.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

Publication types

LinkOut - more resources