Ti3C2Tx MXene core-shell spheres for ultrahigh removal of mercuric ions

被引：160

作者：

Shahzad, Asif ^{[1
,2
]}

Nawaz, Mohsin ^{[1
,2
]}

Mortahida, Mokrema ^{[1
,2
]}

Jang, Jiseon ^{[2
]}

Tahir, Khurram ^{[1
,2
]}

Kim, Jiho ^{[1
,2
]}

Lim, Youngsu ^{[1
,2
]}

Vassiliadis, Vassilios S. ^{[3
]}

Woo, Seung Han ^{[4
]}

Lee, Dae Sung ^{[1
,2
]}

机构：

[1] Kyungpook Natl Univ, Dept Environm Engn, 80 Daehak Ro, Daegu 41566, South Korea

[2] Korea Radioact Waste Agcy, Radioact Waste Disposal R&D Dept, 174 Gajeong Ro, Daejeon 34129, South Korea

[3] Univ Cambridge, Dept Chem Engn & Biotechnol, West Cambridge Site,Philippa Fawcett Dr, Cambridge CB3 0AS, England

[4] Hanbat Natl Univ, Dept Chem & Biol Engn, 125 Dongseodae Ro, Daejeon 34158, South Korea

来源：

CHEMICAL ENGINEERING JOURNAL | 2019年 / 368卷

基金：

新加坡国家研究基金会;

关键词：

Titanium carbide; Microspheres; Adsorption; Heavy metal; METAL-ORGANIC FRAMEWORK; ENHANCED REMOVAL; HYDROGEL BEADS; ADSORPTION; EFFICIENT; OXIDE; EXFOLIATION; POLYMERS; CAPTURE; IRON;

D O I：

10.1016/j.cej.2019.02.160

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Two-dimensional (2-D) titanium carbide MXene core (Ti3C2Tx) shell aerogel spheres (MX-SA) for mercuric ion removal were designed and fabricated with varying concentrations of Ti3C2Tx MXene and sodium alginate (SA) using a facile method. Owing to their unique inside structures, high porosities, large specific surface areas, oxygenated functional groups of MXene nanosheets, and available active binding sites, the synthesized microspheres constitute a unique adsorbent for heavy metals removal in water. The MX-SA(4:20) spheres exhibit an exceptional adsorption capacity of 932.84 mg/g for Hg2+, which is among the highest value reported for adsorbents. The adsorbent exhibits high single-and multi-component removal efficiencies, with 100% efficiency for Hg2+ and > 90% efficiency for five heavy metal ions. The synthesized materials are highly efficient for Hg2+ removal under extreme pH conditions (0.5-1.0 M HNO3) and have additional excellent reproducible properties. The micro-size and spherical shape of MX-SA(4:20) also allow it to be used in column-packed devices.

引用

页码：400 / 408

页数：9

共 55 条

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