Journal
APPLIED SURFACE SCIENCE
Volume 573, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2021.151473
Keywords
Photoelectrocatalysis; Co3O4; MnO2; Water Remediation; Heterostructure
Categories
Funding
- National Natural Science Foundation of China [21875026, 21878031]
- Liaoning Revitalization Talents Program [XLYC1802124]
- Liaoning BaiQianWan Talents Program, the scientific research fund of the educational department of Liaoning province [J2019013]
- Joint Research Fund Liaoning-Shenyang National Laboratory for Materials Science [2019JH3/30100034, 2019010278-JH3/301]
Ask authors/readers for more resources
A unique Co3O4@(delta-)MnO2 setaria-viridislike heterostructure was assembled using a two-step hydrothermal method, with Co3O4 coupled with an appropriate amount of MnO2 achieving high oxygen evolution potential, fast carrier transfer, low resistance, electron-deficient surface, and high photo-response current, leading to promising PEC degradation efficiency for dye degradation applications.
Photoelectrocatalytic (PEC) degradation efficiency of refractory organic pollutants depends strongly on the characteristics of photoanode semiconductors. Therefore, choosing a photoanode semiconductor material to enhance the PEC efficiency is a critical problem. Here, we assemble a unique Co3O4@(delta-)MnO2 setaria-viridislike heterostructure employing a two-step hydrothermal method. To maximize PEC degradation efficiency, coupling Co3O4 with an appropriate amount of MnO2 achieves Co3O4@MnO2-0.05, resulting in high oxygen evolution potential, fast carrier transfer, low resistance, electron-deficient surface, and high photo-response current. Those properties endow Co3O4@MnO2-0.05 as a promising candidate for practice application of dye degradation, with a degradation rate of 94.8 % and long-term durability (-12000 s) under 1.0 mol.L-1 H2SO4 condition at a current density of 250 mA.cm(-2) for blue KN-R degradation. Remarkably, the superior PEC degradation efficiency of Co3O4@MnO2-0.05 outperformed that of Co3O4-based and MnO2-based catalysts due to the dominant role of center dot O-2(-) and h(+) radical during degradation experiments.
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