Photocatalytic and photoelectrocatalytic degradation of small biological compounds at TiO2 photoanode: A case study of nucleotide bases

No Thumbnail Available
File version
Author(s)
Li, Guiying
Liu, Xiaolu
An, Taicheng
Yang, Hai
Zhang, Shanqing
Zhao, Huijun
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2015
Size
File type(s)
Location
License
Abstract

Photocatalytic (PC) and photoelectrocatalytic (PEC) degradation of small biological compounds such as nucleotide bases were carried out because of the nucleotide bases are the building blocks of large biomolecules, nucleic acids. These small biological compounds, four different nucleotide bases, can be photocatalytically and photoelectrocatalytically degradable, and the degradation efficiencies of PEC method were found to be higher than those of PC method for all compounds investigated. Also, we tried to propose the photocatalytical and photoelectrocatalytic degradation mechanisms of nucleotide bases, but the performance was unsuccessful. However, organic nitrogen in the original compounds was found to be oxidized to either NH3/NH4+ or NO3− or both, depending on the chemical structures of the nucleotide bases and the degradation methods used. Based on both the experimental results and the theoretically calculated frontier electron densities (FED) values of 2FEDHOMO2 and FEDHOMO2 + FEDLUMO2, the conclusion can be demonstrated as the reaction mechanisms/pathways of PEC processes differed remarkably from that of PC processes.

Journal Title

Catalysis Today

Conference Title
Book Title
Edition
Volume

242

Issue

Part B

Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject

Chemical sciences

Inorganic green chemistry

Solid state chemistry

Electrochemistry

Engineering

Persistent link to this record
Citation
Collections