Preparation novel mercaptotriazole-functionalized paramagnetic nickel-zinc ferrite microspheres for absorbing Hg (II) in waste water

被引：12

作者：

Ma, Jie ^{[1
]}

Wang, Huiling ^{[1
]}

Li, Denghui ^{[1
]}

Liu, Lian ^{[1
]}

Yang, Honggao ^{[1
]}

机构：

[1] Univ Shanghai Sci & Technol, Sch Sci, Shanghai 200093, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2021年 / 616卷

基金：

上海市自然科学基金;

关键词：

Solid adsorbent; Mercaptotriazole; Bimetallic ferrite; Magnetic microsphere; Heavy metal ions; Surface modification; MAGNETIC NANOPARTICLES; EFFICIENT REMOVAL; GRAPHENE OXIDE; HEAVY-METALS; HG(II) IONS; ADSORPTION; MERCURY; ADSORBENT; PB(II); DESORPTION;

D O I：

10.1016/j.colsurfa.2021.126324

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A novel paramagnetic adsorbent MMT-M is prepared by functionalizing the Ni0.25Zn0.75Fe2O4 (M) magnetic core using TEOS, 3-chloropropyltriethoxysilane (KH-230) and 3-methyl-4-amino-5-mercapto-1, 2, 4-triazole (MMT) in turn. The MMT-M adsorbent is characterized by VSM, XRD, SEM, TEM, EDS and FTIR. Many critical factors are investigated about its adsorption prosperities in aqueous solution, including Hg (II) ion concentration, pH value, adsorption time, metal ion species, multi ion environment and desorption. MMT-M absorbent shows the best adsorption properties for Hg (II) among metal ions, with the adsorbent capacity beyond 66.25 mg g-1. The series desorption experiments indicate that 0.01 mol/L Na2S solution is the best eluent system for the adsorbent. The MMT-M adsorbent still remains excellent absorbability after five reused cycles. MMT-M adsorbent is good applicable to absorb Hg (II) from real water samples.

引用

页数：9

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