Cationic polyacrylamide aerogel intercalated molybdenum disulfide for enhanced removal of Cr(VI) and organic contaminants

六价铬 聚丙烯酰胺 阳离子聚合 吸附 化学 气凝胶 催化作用 铬酸盐转化膜 核化学 二硫化钼 水溶液中的金属离子 金属 X射线光电子能谱 无机化学 有机化学 化学工程 材料科学 高分子化学 冶金 纳米技术 工程类
作者
Feifan Yu,Wenkai Song,Zenglong Wu,Wen‐Xian Chen,Jinping Cui,Yuyuan Yao
出处
期刊:Separation and Purification Technology [Elsevier BV]
卷期号:294: 121188-121188 被引量:10
标识
DOI:10.1016/j.seppur.2022.121188
摘要

The removal of heavy metal ions from industrial effluents by molybdenum disulphide (MoS2) has attracted considerable attention, but developing the removal capacity of MoS2 toward hexavalent chromium ions (Cr(VI)) in wastewater treatment is still a challenge. Herein, a cationic polyacrylamide aerogel (CPAMA) containing -N+(CH3)3 was creatively introduced as a precursor to synthesize the CPAMA intercalated MoS2 (MoS2@CPAMA). The addition of CPAMA as carrier greatly improved the dispersion and the exposure of active sites of MoS2, and even the -N+(CH3)3 effectively increased the surface potential of MoS2, which facilitated the adsorption and reduction for Cr(VI). Notably, MoS2@CPAMA removed 95% of Cr(VI) within 50 min and the maximum Cr(VI) removal capacity reached 800.0 mg g−1 at 400 mg L−1, which was significantly higher than that of MoS2 (237.1 mg g−1) and almost all reported MoS2-based materials. The results of ICP-OES and UV–vis spectrophotometer revealed that both reduction and adsorption pathway were participated during the Cr(VI) removal process, while the reduction was obviously dominated. The results of XPS showed that the -N+(CH3)3 and amide groups played a significant role in adsorbing Cr(VI) onto the MoS2@CPAMA surface, and the Mo was oxidized from Mo4+ to Mo6+ and the S2− was oxidized into S6+ subsequently during the reduction of Cr(VI). Interestingly, MoS2@CPAMA could also be used as a co-catalyst in the Fe2+/PMS system, and the TOC removal rate of 67% in 60 min and the retention rate of 80% for Fe2+ were achieved. Notably, MoS2@CPAMA possessed high durability in the co-existing cations and anions, and the 4-CP removal rate was still as high as 94% after four consecutive cycles, indicating the splendid reusability of MoS2@CPAMA. This study offers new insights into the development of multifunctional MoS2-based materials for wastewater treatment.
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
YY完成签到,获得积分10
刚刚
memaclee发布了新的文献求助10
1秒前
1秒前
zwk发布了新的文献求助10
2秒前
kk发布了新的文献求助10
2秒前
ww完成签到,获得积分10
2秒前
归尘发布了新的文献求助10
2秒前
2秒前
3秒前
ash发布了新的文献求助10
3秒前
镜中月发布了新的文献求助10
3秒前
3秒前
霁星河完成签到,获得积分10
4秒前
4秒前
伍思光完成签到,获得积分10
4秒前
谦让之云发布了新的文献求助10
5秒前
5秒前
Bressanone发布了新的文献求助10
6秒前
倪倪完成签到,获得积分20
6秒前
6秒前
FashionBoy应助songvv采纳,获得10
6秒前
BLUEMOON发布了新的文献求助10
8秒前
8秒前
嘛嘛嘛完成签到,获得积分10
8秒前
月儿发布了新的文献求助10
8秒前
KKK完成签到,获得积分10
9秒前
展希希完成签到,获得积分10
10秒前
11秒前
博修发布了新的文献求助10
12秒前
12秒前
爱吃泡芙完成签到,获得积分10
12秒前
13秒前
14秒前
feifei完成签到,获得积分10
14秒前
14秒前
KKK发布了新的文献求助10
15秒前
111发布了新的文献求助10
15秒前
桐桐应助李昕123采纳,获得30
15秒前
PF发布了新的文献求助10
15秒前
lianliyou发布了新的文献求助10
16秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
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 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3989469
求助须知:如何正确求助?哪些是违规求助? 3531722
关于积分的说明 11254409
捐赠科研通 3270221
什么是DOI,文献DOI怎么找? 1804946
邀请新用户注册赠送积分活动 882113
科研通“疑难数据库(出版商)”最低求助积分说明 809176