Nitrogen-doped cobalt oxide via atmospheric modulation activates PMS for rapid degradation of organic pollutants: Role of nitrogen fraction on sulfapyridine elimination - Details

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Abstract：

The　study　synthesized　nitrogen-doped　cobalt　oxide　precursors　using　a　one-pot　hydrothermal　method.　Three　catalysts,　N&CoO-Ar,　N&CoO-N,　and　N&CoO-NH,　were　obtained　by　calcination　under　different　atmospheric　environments　(argon,　nitrogen,　and　nitrogen‑hydrogen　mixture).　Characterization　results　showed　that　all　the　prepared　materials　consisted　primarily　of　carbon　components　and　cobalt　oxide,　while　the　catalysts　calcined　in　a　nitrogen‑hydrogen　atmosphere　owned　the　highest　content　of　pyridine　nitrogen.　Degradation　experiments　on　sulfapyridine　(SPD)　showed　that　the　N&CoO-NH/PMS　system　exhibited　the　best　SPD　degradation　performance　(the　apparent　rate　constants　were　3.0,　5.1　and　8.3　times　larger　those　of　N&CoO-N/PMS,　N&CoO-Ar/PMS,　and　pure　CoO/PMS),　and　was　able　to　rapidly　degrade　the　pollutant　within　5　min.　The　quenching　experiments　and　electrochemical　experiments　indicated　that　the　nitrogen　component　modulation　improved　the　chemisorption　between　PMS　and　N&CoO-NH　and　enhanced　the　electron　transfer　efficiency　between　N&CoO-NH/PMS　and　the　pollutant.　In　addition,　the　N&CoO-NH/PMS　system　exhibited　good　stability　and　a　wide　pH　applicability.　Furthermore,　N&CoO-NH/PMS　also　exhibited　good　anti-interference　performance　in　the　presence　of　Cl−,　HCO3−,　NO3−,　PO42−,　CO32−,　and　HA,　as　well　as　excellent　feasibility　of　treating　actual　wastewater.　©　2024

Keyword：

Cobalt-based catalysts Degradation of organic pollutants DFT N doping Permonosulfate activation

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[ 1 ] [Zou L.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 2 ] [Yang K.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 3 ] [Hu Y.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 4 ] [Guo X.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 5 ] [Li X.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 6 ] [Lv Y.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 7 ] [Liu Y.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 8 ] [Ye X.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 9 ] [Lin C.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 10 ] [Liu M.]Fujian Provincial Engineering Research Center of Rural Waste Recycling Technology, College of Environment & Safety Engineering, Fuzhou University, Fuzhou, 350116, China
[ 11 ] [Liu M.]Fujian Provincial Key Laboratory of Ecology-Toxicological Effects & Control for Emerging Contaminants, Putian University, Putian, 351100, China

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Source ：

Journal of Water Process Engineering

ISSN： 2214-7144

Year： 2024

Volume： 67

6 . 3 0 0

JCR@2023

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ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 1

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