Sulfate saturated biosorbent-derived Co-S@NC nanoarchitecture as an efficient catalyst for peroxymonosulfate activation

被引：366

作者：

Du, Weiyan ^{[1
,2
]}

Zhang, Qingzhu ^{[2
]}

Shang, Yanan ^{[1
]}

Wang, Wei ^{[2
]}

Li, Qian ^{[1
]}

Yue, Qinyan ^{[1
]}

Gao, Baoyu ^{[1
]}

Xu, Xing ^{[1
]}

机构：

[1] Shandong Univ, Sch Environm Sci & Engn, Shandong Key Lab Water Pollut Control & Resource, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China

[2] Shandong Univ, Environm Res Inst, 27 Shanda South Rd, Jinan 250100, Shandong, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2020年 / 262卷

关键词：

Nitrogen doped carbon martix; S doped Co3O4; Peroxymonosulfate; Dinotefuran; Density functional theory; DOPED CARBON NANOTUBES; BISPHENOL-A; ORGANIC POLLUTANTS; POROUS CARBON; HETEROGENEOUS ACTIVATION; OXIDATIVE-DEGRADATION; REMOVAL; WATER; PERSULFATE; GRAPHENE;

D O I：

10.1016/j.apcatb.2019.118302

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Using sulfate saturated bio-sorbent and cobalt(II) acetate as precursors, the homogeneous assembly of S-Co3O4 in nitrogen doped carbon martix (Co-S@NC) was obtained for the first time in an one-step pyrolysis. The reactions between peroxymonosulfate (PMS) and Co-S@NC for dinotefuran (DIN) decomposition were investigated. Co3O4 in Co@NC were primarily coordinated with the pyridinic N as catalytic sites. The adsorbed sulfate as S dopant was incorporated into the Co3O4 in carbon matrix due to the role of N as anchors, and the DIN decomposition of S-doped samples increased by 1.71 times as compared to the S-free sample (Co@NC). S incorporation can promote the formation of non-radical O-1(2) and various radicals. In addition, DFT calculations indicated the enhanced electronic conductivity after S incorporation, which would facilitate the DIN decomposition in Co-S@NC/PMS system. This work enables the first insight into the role of adsorbed sulfate as effective S dopant for PMS activation.

引用

页数：14

共 92 条

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