Surface oxygen vacancy inducing peroxymonosulfate activation through electron donation of pollutants over cobalt-zinc ferrite for water purification
By Hongxiang Zhang, Chenwei Li, Lai Lyu, Chun Hu. 2020
302 citations recorded by the source corpus.
Abstract Peroxymonosulfate (PMS) activation in heterogeneous processes for pollutant degradation is a promising water purification technology. However, the existed rate limiting step greatly restrains its performance and increases the consumption of PMS and energy. Herein, we offer a new strategy to solve this problem. In this work, surface oxygen vacancy (VO)-rich ZnFe0.8Co0.4O2.4 nanoparticles were prepared and characterized, which exhibited high activity and stability for refractory pollutant degradation with PMS activation. It was found that PMS ([O3S OI OII H]−) could be adsorbed and trapped by the surface oxygen vacancies in the form of OI-Vo or OII-Vo during the reaction. Different electron transfer pathways from Vo to different O sites of PMS was realized in the solid-liquid interface based on the generation of OH, SO4 − or H2 from PMS reduction. Pollutants were predominantly adsorbed at metal Co sites in which their electrons were captured by metal species and then transferred to the surface oxygen vacancies, achieving efficient recycling of electrons in the aqueous suspensions. This system achieves a dual-pathway degradation of pollutants and electron transfer from pollutants to PMS to produce free radicals and H2, essentially changing the traditional concepts of pollutant removal and providing a sustainable strategy for pollutant utilization during water purification.
Subfields: Renewable Energy, Sustainability and the Environment, Water Science and Technology
View Paper: https://www.semanticscholar.org/paper/2eabad68fa35e5fa4c1faa7b1a0b1ce5ba7cbe22
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Degradation of acetaminophen by activated peroxymonosulfate using Co(OH)2 hollow microsphere supported titanate nanotubes: Insights into sulfate radical production pathway through CoOH+ activation (2021, methodology): “78 G) were observed [82,83], suggesting successful PMS activation by CoM/TNTs [84].”
- Tuning of Structural, Dielectric, and Electronic Properties of Cu Doped Co–Zn Ferrite Nanoparticles for Multilayer Inductor Chip Applications (2021, background): “The dielectric dispersion showed the normal Maxwell–Wagner type of interfacial polarization response, where it decreases with the increase in the frequency of the applied field [47].”