Tailored poly-heptazine units in carbon nitride for activating peroxymonosulfate to degrade organic contaminants with visible light - Details

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The　photocatalytic　peroxymonosulfate　(PMS)　activation　process　offers　great　potential　for　organic　wastewater　treatment.　In　this　study,　enol-incorporated　carbon　nitride　(ECN)　catalysts　were　used　for　PMS　activation　to　degrade　organic　pollutants　under　visible-light　irradiation.　Our　experimental　and　theoretical　results　revealed　that　the　incorporation　of　enol　into　the　poly-heptazine-based　carbon　nitride　framework　effectively　tuned　the　electronic　structure.　The　obtained　ECN　showed　promoted　PMS　activation　capability,　along　with　increased　visible-light　harvesting　ability　and　improved　photogenerated　charge　separation.　As　a　result,　an　excellent　performance　with　a　bisphenol　A　removal　rate　of　100%　within　20　min　and　a　total　organic　carbon　(TOC)　removal　rate　of　86%　in　30　min　was　achieved　in　the　Vis-PMS/ECN　process.　This　was　because　ECN　functioned　as　an　efficient　photocatalyst　as　well　as　PMS　activator,　which　enabled　the　PMS　activation　process　to　proceed　smoothly　for　•SO4−　production　under　visible-light　irradiation.　These　findings　could　offer　some　guidelines　for　the　development　of　efficient　metal-free　photocatalysts　in　the　persulfate-based　advanced　oxidation　process　for　environmental　remediation.　©　2022　Elsevier　B.V.

Keyword：

Carbon nitride Chemical activation Electronic structure Irradiation Light Organic carbon Organic pollutants Photocatalytic activity Wastewater treatment

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[ 1 ] [Ming, Hongbo]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 2 ] [Zhang, Peiyun]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 3 ] [Yang, Yang]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 4 ] [Zou, Yu]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 5 ] [Zou, Yu]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 6 ] [Yang, Can]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 7 ] [Hou, Yidong]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 8 ] [Ding, Kaining]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 9 ] [Ding, Kaining]Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 10 ] [Zhang, Jinshui]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China
[ 11 ] [Wang, Xinchen]State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou; 350108, China

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Source ：

Applied Catalysis B: Environmental

ISSN： 0926-3373

Year： 2022

Volume： 311

2 2 . 1

JCR@2022

2 0 . 3 0 0

JCR@2023

ESI HC Threshold：74

JCR Journal Grade：1

CAS Journal Grade：1

Cited Count：

WoS CC Cited Count： 0

SCOPUS Cited Count： 78

ESI Highly Cited Papers on the List： 0 Unfold All

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Chinese Cited Count：

30 Days PV： 1

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