Fe(III)-Doped g-C3N4 Mediated Peroxymonosulfate Activation for Selective Degradation of Phenolic Compounds via High-Valent Iron-Oxo Species

化学 降级(电信) 兴奋剂 核化学 材料科学 计算机科学 电信 光电子学
作者
Hongchao Li,Chao Shan,Bingcai Pan
出处
期刊:Environmental Science & Technology [American Chemical Society]
卷期号:52 (4): 2197-2205 被引量:847
标识
DOI:10.1021/acs.est.7b05563
摘要

Herein, we proposed a new peroxymonosulfate (PMS) activation system employing the Fe(III) doped g-C3N4 (CNF) as catalyst. Quite different from traditional sulfate radical-based advanced oxidation processes (SR-AOPs), the PMS/CNF system was capable of selectively degrading phenolic compounds (e.g., p-chlorophenol, 4-CP) in a wide pH range (3–9) via nonradical pathway. The generated singlet oxygen (1O2) in the PMS/CNF3 (3.46 wt % Fe) system played negligible role in removing 4-CP, and high-valent iron-oxo species fixated in the nitrogen pots of g-C3N4 (≡FeV═O) was proposed as the dominant reactive species by using dimethyl sulfoxide as a probe compound. The mechanism was hypothesized that PMS was first bound to the Fe(III)-N moieties to generate ≡FeV═O, which effectively reacted with 4-CP via electron transfer. GC-MS analysis indicated that 4-chlorocatechol and 1,4-benzoquinone were the major intermediates, which could be further degraded to carboxylates. The kinetic results suggested that the formation of ≡FeV═O was proportional to the dosages of PMS and CNF3 under the experimental conditions. Also, the PMS/CNF3 system exhibited satisfactory removal of 4-CP in the presence of inorganic anions and natural organic matters. We believe that this study will provide a new routine for effective PMS activation by heterogeneous iron-complexed catalysts to efficiently degrade organic contaminants via nonradical pathway.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
迷路采珊完成签到,获得积分10
刚刚
de完成签到,获得积分10
刚刚
Ww完成签到,获得积分10
刚刚
贡菜选手完成签到,获得积分10
1秒前
chinbaor完成签到,获得积分10
2秒前
2秒前
科研通AI2S应助孙雪君采纳,获得10
2秒前
3秒前
affff完成签到 ,获得积分10
3秒前
Hua发布了新的文献求助100
3秒前
4秒前
4秒前
taster驳回了凉凉应助
5秒前
听话的白易完成签到,获得积分20
5秒前
yangzhang完成签到,获得积分10
5秒前
超帅的豪英完成签到,获得积分10
6秒前
liam完成签到,获得积分10
7秒前
gaojing完成签到,获得积分10
8秒前
8秒前
研友_xnEOX8完成签到,获得积分10
8秒前
RMgX发布了新的文献求助10
9秒前
111完成签到,获得积分10
9秒前
机智雁凡完成签到,获得积分10
9秒前
花花完成签到 ,获得积分10
10秒前
红叶完成签到,获得积分10
10秒前
向蔚发布了新的文献求助10
10秒前
ldd完成签到,获得积分10
12秒前
坦率的惊蛰完成签到,获得积分10
12秒前
fei完成签到,获得积分10
12秒前
潇洒的白昼完成签到,获得积分10
13秒前
Owen应助赵寇采纳,获得10
13秒前
研友_xnEOX8发布了新的文献求助30
13秒前
14秒前
蓝豆子完成签到 ,获得积分10
14秒前
14秒前
无辜的夏兰完成签到,获得积分10
15秒前
weijian完成签到,获得积分10
15秒前
洪伟完成签到,获得积分10
17秒前
爽歪歪完成签到,获得积分10
17秒前
huco完成签到,获得积分10
18秒前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Social Research Methods (4th Edition) by Maggie Walter (2019) 2390
A new approach to the extrapolation of accelerated life test data 1000
北师大毕业论文 基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 390
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Robot-supported joining of reinforcement textiles with one-sided sewing heads 360
Atlas of Interventional Pain Management 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4008933
求助须知:如何正确求助?哪些是违规求助? 3548669
关于积分的说明 11299538
捐赠科研通 3283228
什么是DOI,文献DOI怎么找? 1810311
邀请新用户注册赠送积分活动 886034
科研通“疑难数据库(出版商)”最低求助积分说明 811259