Journal
CHEMICAL ENGINEERING JOURNAL
Volume 435, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2022.134873
Keywords
Photoanode; Z-scheme mechanism; Interfacial electric field; PEC degradation; a-Fe2O3
Categories
Funding
- National Natural Science Foundation of China [52070015, 21872009]
- Beijing Forestry University Outstanding Young Talent Cultivation Project [2019JQ03007]
- Beijing Municipal Education Commission through the Innovative Transdisciplinary Program Ecological Restoration Engineering [GJJXK210102]
Ask authors/readers for more resources
By adjusting the composition of the heterostructure, the photoelectrocatalytic performance has been significantly enhanced, leading to efficient degradation of clofibric acid.
A series of g-C3N4-modified alpha-Fe2O3 heterostructures are synthesized by deposition on fluorine-doped tin oxide (FTO). The resulting alpha-Fe2O3/g-C3N4/FTO photoanode (denoted as Fe/CN) show markedly improve photoelectrocatalytic performance, with a photocurrent density (0.18 mA/cm(2)) that is 5.1 times that of alpha-Fe2O3 and 9.4 times that of g-C3N4. The suitable charge transport path is observed by interfacial analysis, where the conduction band of g-C3N4 and valence band of alpha-Fe2O3 shuttled holes and electrons into the electrolyte at accelerated speeds, respectively. Impressively, the Fe/CN photoelectrode achieve the highest pollutant removal efficiency of 99.7% for the photoelectrocatalytic degradation of clofibric acid (CA) under visible-light irradiation, which is expected to be applicable in actual wastewater for environmental protection. Density functional theory (DFT) calculations and intermediate identification shows that the CA degradation pathway involved C-Cl and O-C cleavage. These findings provide an environmentally friendly method to remove emerging contaminants using renewable solar energy.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available