Functionalized Activated Carbon Fibers by Hydrogen Peroxide and Polydopamine for Efficient Trace Lead Removal from Drinking Water

吸附 活性炭 化学 过氧化氢 朗缪尔吸附模型 化学工程 水溶液 核化学 有机化学 工程类
作者
Qi Zuo,Hong Zheng,Pengyi Zhang,Yu Zhang
出处
期刊:Langmuir [American Chemical Society]
卷期号:38 (1): 253-263 被引量:27
标识
DOI:10.1021/acs.langmuir.1c02459
摘要

To achieve efficient and selective trace heavy metals removal from drinking water, a low-cost purification material polydopamine/activated carbon fibers (PDA/H-ACF) was successfully prepared by polymerizing dopamine on the surface of activated carbon fibers pretreated with hydrogen peroxide. The morphology, phase, surface functional groups, specific surface, and pore size distribution of the as-prepared sample were analyzed using FESEM, XPS, BET and pore size distribution test (PST), and FTIR, and orthogonal experiments were used to investigate the influences of concentration of H2O2, pretreatment time, and reflux temperature on trace lead removal. The results showed that the sample pretreated under optimized conditions could produce different pore structures, and the content of functional group −COOH obviously increased. After further modification by polydopamine, the contents of −NH–, −NH2, and −OH functional groups on the surface obviously enhanced, which were beneficial to increase adsorption site and promote trace lead removal. The effluent lead concentration decreased from initial 150 to 3.18 ppb within 5 min, meeting the requirement of NSF International Standard/American National Standard for Drinking Water Treatment Units (NSF/ANSI 53–2020) (5 ppb). The isothermal adsorption process and adsorption kinetics could be well-fitted by the Langmuir isotherm and pseudo-second-order kinetics model, indicating that the adsorption process of trace lead by PDA/H-ACF belonged to monolayer and chemical adsorption. Moreover, the as-prepared PDA/H-ACF also showed superior trace lead adsorption performance in the presence of high concentration competitive metal ions, in a wide pH range and in tap water, and therefore had good application prospect in the field of drinking water purification.
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
qweerrtt完成签到,获得积分10
5秒前
5秒前
与共发布了新的文献求助10
6秒前
carly完成签到 ,获得积分10
7秒前
颢懿完成签到 ,获得积分10
10秒前
量子星尘发布了新的文献求助10
11秒前
13秒前
ljc完成签到 ,获得积分10
14秒前
Java完成签到,获得积分10
18秒前
20秒前
鲤鱼安青完成签到 ,获得积分10
22秒前
22秒前
dollarpuff完成签到 ,获得积分10
25秒前
25秒前
mmmmmMM完成签到,获得积分10
32秒前
luckweb完成签到,获得积分10
38秒前
猫的毛完成签到 ,获得积分10
39秒前
nicky完成签到 ,获得积分10
40秒前
麦子完成签到 ,获得积分10
41秒前
41秒前
Wilson完成签到 ,获得积分10
42秒前
luckweb发布了新的文献求助10
42秒前
42秒前
46秒前
49秒前
传奇3应助wujiwuhui采纳,获得10
51秒前
开心寄松完成签到,获得积分10
53秒前
北宫完成签到 ,获得积分10
53秒前
wansida完成签到,获得积分10
57秒前
QXS完成签到 ,获得积分10
57秒前
58秒前
菠萝完成签到 ,获得积分10
58秒前
领导范儿应助Villanellel采纳,获得10
1分钟前
wintersss完成签到,获得积分10
1分钟前
尹尹发布了新的文献求助10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
zzzzzz完成签到 ,获得积分10
1分钟前
坦率的枕头完成签到,获得积分10
1分钟前
XS_QI完成签到 ,获得积分10
1分钟前
与共发布了新的文献求助10
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
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 4038066
求助须知:如何正确求助?哪些是违规求助? 3575779
关于积分的说明 11373801
捐赠科研通 3305584
什么是DOI,文献DOI怎么找? 1819239
邀请新用户注册赠送积分活动 892655
科研通“疑难数据库(出版商)”最低求助积分说明 815022