NaOH-modified biochar supported Fe/Mn bimetallic composites as efficient peroxymonosulfate activator for enhance tetracycline removal

双金属片 生物炭 化学 催化作用 浸出(土壤学) 协同催化 核化学 复合数 活化能 氧化还原 无机化学 材料科学 物理化学 有机化学 复合材料 土壤水分 土壤科学 环境科学 热解
作者
Fawen Liang,Zhang Liu,Xueding Jiang,Jiesen Li,Kaibang Xiao,Weicheng Xu,Xin Chen,Jinzhi Liang,Zhifeng Lin,Meng Li,Xiaolian Wu,Hailong Wang
出处
期刊:Chemical Engineering Journal [Elsevier BV]
卷期号:454: 139949-139949 被引量:94
标识
DOI:10.1016/j.cej.2022.139949
摘要

The activation mechanism of PMS on Fe-Mn/AW-BC for TC degradation. • Nanosheets-like Fe-Mn co-doped NaOH-modified porous BC (Fe-Mn/AW-BC) are prepared. • The biochar inhibits metal ion release and improves the stability of the composite. • Fe-Mn/AW-BC activating PMS for treatment of various pollutants and water environments. • The mechanism of Fe-Mn/AW-BC activating PMS was revealed. In this study, NaOH-modified biochar supported Fe/Mn bimetallic composite (Fe-Mn/AW-BC) was prepared to remove tetracycline (TC) through activating peroxymonosulfate (PMS). Results showed that about 97.9% of TC was degraded and the rate constant of Fe-Mn/AW-BC+PMS system was 37 folds higher than BC+PMS system. Experimental results confirmed that both radical and non-radical pathway were contribute to the catalytic system. Density functional theory (DFT) results also suggested that Fe-Mn/AW-BC sample was favorable for adsorbing PMS based on the length O-O bond from PMS and the E ads of catalysts. The superior activation ability was ascribed to the accelerating formation of reaction active species and other oxidation species by bimetallic structures of Fe-Mn and oxygenated functional groups of BC. Additionally, the redox cycles of Fe 3+ /Fe 2+ and Mn 3+ /Mn 2+ under Fe-Mn-BC synergism promoted the generation of the radicals, whereas the carbon shell effectively inhibited metals leaching of Fe-Mn/AW-BC, and 77.8% of TC can be still removed within 60 min after five consecutive cycles. Notably, Fe-Mn/AW-BC system has special characteristic of wide pH usable range and broad-spectrum adaptability towards various organic pollutants and various water environments. Based on intermediate identification and Fukui function calculation, the degradation pathways of TC were also proposed. This study highlights the applications of biochar for the environmental catalysis.
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
刚刚
FashionBoy应助li采纳,获得10
1秒前
1秒前
SciGPT应助薛定谔的猫采纳,获得10
1秒前
2秒前
2秒前
muming完成签到,获得积分20
3秒前
sanlunainiu发布了新的文献求助10
3秒前
林博研完成签到,获得积分20
3秒前
FashionBoy应助风趣的灵枫采纳,获得10
4秒前
5秒前
yihuiqing发布了新的文献求助10
6秒前
likke发布了新的文献求助10
6秒前
嗝嗝发布了新的文献求助10
6秒前
小兔狸花昕完成签到,获得积分20
7秒前
IRer79完成签到,获得积分10
9秒前
彭于晏应助noah采纳,获得10
9秒前
青年才俊发布了新的文献求助10
9秒前
zhu发布了新的文献求助10
10秒前
波波蛋完成签到,获得积分10
10秒前
11秒前
12秒前
13秒前
maguodrgon发布了新的文献求助10
16秒前
科研通AI5应助shell采纳,获得80
16秒前
波波蛋发布了新的文献求助10
16秒前
17秒前
九鹤完成签到,获得积分10
17秒前
jsy完成签到,获得积分10
17秒前
量子星尘发布了新的文献求助10
18秒前
旷野发布了新的文献求助10
18秒前
18秒前
Owen应助浮云521采纳,获得10
18秒前
浮游应助muming采纳,获得10
18秒前
酷炫的凤妖完成签到 ,获得积分10
19秒前
20秒前
20秒前
22秒前
22秒前
22秒前
高分求助中
(应助此贴封号)【重要!!请各用户(尤其是新用户)详细阅读】【科研通的精品贴汇总】 10000
Zeolites: From Fundamentals to Emerging Applications 1500
Architectural Corrosion and Critical Infrastructure 1000
Early Devonian echinoderms from Victoria (Rhombifera, Blastoidea and Ophiocistioidea) 1000
By R. Scott Kretchmar - Practical Philosophy of Sport and Physical Activity - 2nd (second) Edition: 2nd (second) Edition 666
Energy-Size Reduction Relationships In Comminution 500
Principles Of Comminution, I-Size Distribution And Surface Calculations 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 工程类 有机化学 内科学 生物化学 物理 计算机科学 纳米技术 遗传学 基因 复合材料 化学工程 物理化学 病理 催化作用 免疫学 量子力学
热门帖子
关注 科研通微信公众号,转发送积分 4941339
求助须知:如何正确求助?哪些是违规求助? 4207390
关于积分的说明 13077624
捐赠科研通 3986257
什么是DOI,文献DOI怎么找? 2182529
邀请新用户注册赠送积分活动 1198125
关于科研通互助平台的介绍 1110387