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
量子星尘发布了新的文献求助10
刚刚
zikncy完成签到,获得积分10
刚刚
歇菜发布了新的文献求助10
1秒前
稳重诗珊完成签到,获得积分10
2秒前
俭朴青烟发布了新的文献求助10
2秒前
呜呼啦呼完成签到 ,获得积分10
3秒前
球球应助hkh采纳,获得10
3秒前
Ava应助胖丹采纳,获得10
4秒前
球球应助hkh采纳,获得10
4秒前
梧桐应助hkh采纳,获得10
4秒前
坦率的金鱼应助hkh采纳,获得10
4秒前
球球应助hkh采纳,获得10
4秒前
4秒前
球球应助hkh采纳,获得10
4秒前
万能图书馆应助hkh采纳,获得10
4秒前
FashionBoy应助hkh采纳,获得10
4秒前
酷波er应助hkh采纳,获得10
4秒前
6秒前
大个应助Ridley采纳,获得10
6秒前
深呼吸完成签到,获得积分10
6秒前
7秒前
8秒前
高高的巨人完成签到 ,获得积分10
8秒前
9秒前
Hoooo...发布了新的文献求助10
10秒前
坚强的紫菜完成签到 ,获得积分10
10秒前
10秒前
苹果黄豆发布了新的文献求助10
10秒前
10秒前
脑洞疼应助xue采纳,获得10
11秒前
二三应助Yimmy采纳,获得10
11秒前
11秒前
weilan发布了新的文献求助10
12秒前
12秒前
12秒前
13秒前
羽言完成签到,获得积分10
13秒前
14秒前
李爱国应助专注的月亮采纳,获得10
14秒前
14秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
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
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 4009905
求助须知:如何正确求助?哪些是违规求助? 3549896
关于积分的说明 11304149
捐赠科研通 3284441
什么是DOI,文献DOI怎么找? 1810658
邀请新用户注册赠送积分活动 886424
科研通“疑难数据库(出版商)”最低求助积分说明 811406