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author:

Li, Xiaojuan (Li, Xiaojuan.) [1] (Scholars:李小娟) | Ye, Ziyu (Ye, Ziyu.) [2] | Xie, Shuhan (Xie, Shuhan.) [3] | Li, Hongyan (Li, Hongyan.) [4] | Lv, Yuancai (Lv, Yuancai.) [5] (Scholars:吕源财) | Wang, Yongjing (Wang, Yongjing.) [6] (Scholars:王永净) | Wang, Yonghao (Wang, Yonghao.) [7] (Scholars:王永好) | Lin, Chunxiang (Lin, Chunxiang.) [8] (Scholars:林春香)

Indexed by:

EI Scopus SCIE

Abstract:

A series of boron and nitrogen co-doped hierarchical porous carbon materials (BNC) were prepared via a facile one-step calcination process, and the catalytic performance of BNC on PMS activation for phenol removal was investigated. BNC-1 exhibited the optimal catalytic performance with a phenol degradation efficiency of 99.6% within 30 min. B, N co-doping strategy improved the specific surface areas (SSA) and total pore volumes (TPV) of carbon catalysts, providing them with abundant active sites, among which graphitic N and BC(3 )were identified as critical catalytic sites for PMS activation. Quenching tests, electron paramagnetic resonance (EPR) and electrochemical experiments demonstrated that singlet oxygen (O-1(2)) was the dominant active species while surface -bound sulfate radical (SO4 center dot-) played an inferior role in the BNC-1/PMS/Phenol system, and the role of hydroxyl radical (center dot OH), superoxide radical (O-2(center dot-)) and surface electron transport cannot be ignored either. The coexistence of radical and non-radical oxidation processes made BNC-1/PMS system have excellent acid-base tolerance (pH=3-11), anti-interference ability and pollutant mineralization performance (68.3% of TOC removal within 30 min). This study presented a high-efficiency and environment-friendly B, N co-doped metal-free catalyst for pollutants degradation via PMS activation and provided an in-depth research for the mechanism of PMS activation by BNC.

Keyword:

Boron and nitrogen co -doped Metal -organic frameworks Peroxymonosulfate Phenol Singlet oxygen

Community:

  • [ 1 ] [Li, Xiaojuan]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 2 ] [Ye, Ziyu]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 3 ] [Xie, Shuhan]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 4 ] [Li, Hongyan]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 5 ] [Lv, Yuancai]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 6 ] [Wang, Yongjing]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 7 ] [Wang, Yonghao]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China
  • [ 8 ] [Lin, Chunxiang]Fuzhou Univ, Coll Environm & Safety Engn, Fujian Prov Engn Res Ctr Rural Waste Recycling Tec, Fuzhou 350108, Peoples R China

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Source :

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING

ISSN: 2213-2929

Year: 2022

Issue: 5

Volume: 10

7 . 7

JCR@2022

7 . 4 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:66

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 12

SCOPUS Cited Count: 10

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 0

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