亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Visible light responsive photoactive polymer supported on carbonaceous biomass for photocatalytic water remediation

光催化 可见光谱 聚合 聚合物 材料科学 共轭体系 轨道能级差 光化学 化学 化学工程 催化作用 有机化学 分子 光电子学 工程类
作者
Ridha Djellabi‬‬‬‬‬‬‬‬,Xu Zhao,Claudia L. Bianchi‬,Peidong Su,Jafar Ali,Bo Yang
出处
期刊:Journal of Cleaner Production [Elsevier BV]
卷期号:269: 122286-122286 被引量:37
标识
DOI:10.1016/j.jclepro.2020.122286
摘要

Abstract Polymers have emerged as a new group of photoactive materials owing to their excellent optical and electronic properties. In this work, we report the synthesis and application of novel conjugated polymer for photocatalytic water remediation. The photoactive polymer was fabricated via the heat polymerization of Tris(4-carbazoyl-9-ylphenyl)amine (TCTA) into the Polyvinylpyrrolidone (PVP) host polymer (with mass ratio of 98%). TCTA is an electron rich with high lying LUMO and band gap of Eg = 3.4 eV, however, its polymerization with PVP results in higher visible light response until 900 nm. Two conjugated polymer samples were prepared with low and high TCTA contains, namely CP1 and CP2, respectively. The as-prepared photoactive samples were used as photoredox catalysts for the photocatalytic reduction of Cr(VI) and oxidation of MB under visible light (420 nm). CP2 showed higher visible light response, better electrochemical activity and excellent photocatalytic activity compared to CP1. In terms of Cr(VI) photoreduction, CP2 (0.25 g/L) can totally reduce Cr(VI) (20 ppm) at pH ranging from 3 to 8 under visible light. A total reduction of 40 ppm of Cr(VI) was found within 60 min using 0.75 g/L of CP2. 98% of MB was oxidized within 90 min using 0.25 g/L of CP2 under visible light. The photoactive polymer was supported into lignocellulosic biomass for higher surface area and better stability. As a result, this latter composite showed an enhanced adsorption capacity and photocatalytic efficiency towards Cr(VI) and MB compared to bare photoactive polymer. The main compounds used to fabricate this composite including PVP and natural biomass are eco-friendly, safe and low-cost which make it economically feasible photocatalyst for water remediation or other photoredox systems.
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
acetdw发布了新的文献求助10
3秒前
烟花应助lf采纳,获得10
3秒前
5秒前
5秒前
淡定的半梦完成签到 ,获得积分10
6秒前
dudupig发布了新的文献求助20
7秒前
9秒前
wlei发布了新的文献求助10
11秒前
acetdw完成签到,获得积分10
12秒前
12秒前
13秒前
lf发布了新的文献求助10
18秒前
乐乐应助科研通管家采纳,获得10
18秒前
王伟应助科研通管家采纳,获得10
18秒前
20秒前
冷傲新柔发布了新的文献求助10
21秒前
坚定灯泡完成签到,获得积分20
24秒前
Jamie2完成签到,获得积分10
24秒前
Kunning完成签到 ,获得积分10
32秒前
34秒前
lyh完成签到,获得积分10
35秒前
研友_Zzy1pn发布了新的文献求助10
39秒前
41秒前
Jamie完成签到,获得积分10
46秒前
从容成危发布了新的文献求助10
47秒前
47秒前
FashionBoy应助整齐海秋采纳,获得10
50秒前
Lee发布了新的文献求助10
52秒前
科研通AI2S应助从容成危采纳,获得10
57秒前
研友_VZG7GZ应助生动的如花采纳,获得10
1分钟前
量子星尘发布了新的文献求助10
1分钟前
1分钟前
整齐海秋发布了新的文献求助10
1分钟前
深情安青应助momochichu采纳,获得10
1分钟前
chrispaul发布了新的文献求助50
1分钟前
慈祥的冰淇淋完成签到,获得积分10
1分钟前
dormraider完成签到,获得积分10
1分钟前
1分钟前
哒哒哒张海艳完成签到,获得积分10
1分钟前
momochichu发布了新的文献求助10
1分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
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 3976600
求助须知:如何正确求助?哪些是违规求助? 3520700
关于积分的说明 11204482
捐赠科研通 3257320
什么是DOI,文献DOI怎么找? 1798683
邀请新用户注册赠送积分活动 877881
科研通“疑难数据库(出版商)”最低求助积分说明 806613