Publication: Bifunctional photoelectrochemical process for humic acid degradation and hydrogen production using multi-layered p-type Cu<inf>2</inf>O photoelectrodes with plasmonic Au@TiO<inf>2</inf>
Issued Date
2021-01-15
Resource Type
ISSN
18733336
03043894
03043894
Other identifier(s)
2-s2.0-85088946571
Rights
Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Hazardous Materials. Vol.402, (2021)
Suggested Citation
Piangjai Peerakiatkhajohn, Jung Ho Yun, Teera Butburee, Hongjun Chen, Supphasin Thaweesak, Miaoqiang Lyu, Songcan Wang, Lianzhou Wang Bifunctional photoelectrochemical process for humic acid degradation and hydrogen production using multi-layered p-type Cu<inf>2</inf>O photoelectrodes with plasmonic Au@TiO<inf>2</inf>. Journal of Hazardous Materials. Vol.402, (2021). doi:10.1016/j.jhazmat.2020.123533 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/77061
Research Projects
Organizational Units
Authors
Journal Issue
Thesis
Title
Bifunctional photoelectrochemical process for humic acid degradation and hydrogen production using multi-layered p-type Cu<inf>2</inf>O photoelectrodes with plasmonic Au@TiO<inf>2</inf>
Abstract
Bifunctional photoelectrochemical (PEC) process for simultaneous hydrogen production and mineralisation of humic acid in water using TiO2-1 wt% Au@TiO2/Al2O3/Cu2O multi-layered p-type photoelectrodes is demonstrated. The newly designed bifunctional PEC system leads to a high degradation efficiency of dissolved humic compounds, the target pollutant, by up to 87% during 2 h reaction time. Simultaneously, humic acid is also served as a sacrificial electron donor in the proposed system, contributing to a high photocurrent density of the multi-layered p-type Cu2O photoelectrodes up to -6.32 mA cm−2 at 0 V vs. Reversible Hydrogen Electrode (RHE) under the AM 1.5 simulated 1-Sun solar illumination. The Z-scheme feature of this bifunctional PEC devices exhibiting a short-circuit photocurrent density of -0.45 mA cm−2 and solar-to-hydrogen conversion (STH) of 0.5 % in the presence of humic acid sheds light on the new bias-free artificial photosynthesis PEC system.