Exploration of the adsorption performance and mechanism of zeolitic imidazolate framework-8@graphene oxide for Pb(II) and 1-naphthylamine from aqueous solution

被引：120

作者：

Wang, Junyi ^{[1
,2
]}

Li, Yucheng ^{[1
]}

Lv, Zhimin ^{[2
]}

Xie, Yi ^{[2
]}

Shu, Junjie ^{[2
]}

Alsaedi, Ahmed ^{[3
]}

Hayat, Tasawar ^{[3
,4
]}

Chen, Changlun ^{[2
,3
]}

机构：

[1] Anhui Univ, Sch Resources & Environm Engn, Hefei 230601, Peoples R China

[2] Chinese Acad Sci, Inst Plasma Phys, CAS Key Lab Photovolta & Energy Conservat Mat, POB 1126, Hefei 230031, Anhui, Peoples R China

[3] King Abdulaziz Univ, Fac Sci, NAAM Res Grp, Jeddah 21589, Saudi Arabia

[4] Quaid I Azam Univ, Dept Math, Islamabad 44000, Pakistan

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2019年 / 542卷

基金：

中国国家自然科学基金;

关键词：

ZIF-8@GO; Pb(II); 1-naphthylamine; Adsorption; SOOT-LIKE MATERIALS; METAL-ORGANIC FRAMEWORKS; MIXED MATRIX MEMBRANES; GRAPHENE OXIDE; ZIF-8; NANOPARTICLES; CARBON NANOTUBES; HIGHLY EFFICIENT; REMOVAL; NANOSHEETS; CAPACITIES;

D O I：

10.1016/j.jcis.2019.02.039

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 composite of zeolitic imidazolate framework grown on graphene oxide (ZIF-8@GO) was successfully prepared and used for the adsorption of Pb(II) and 1-naphthylamine from aqueous solutions. The effects of contact time, pH, ionic strength and temperature on the adsorption performance of ZIF-8@GO was investigated by batch experiments. Compared to the bare ZIF-8 and GO, the ZIF-8@GO exhibited a significant increase in the adsorption for Pb(II) and 1-naphthylamine. The maximum adsorption capacities of ZIF-8@GO towards Pb(II) and 1-naphthylamine reached 356.0 and 171.3 mg/g at 293 K, respectively. Besides, the basic physicochemical properties of ZIF-8@GO were characterized by Scanning electron microscope, X-ray diffraction, and Fourier transform infrared spectroscopy tests. The results revealed that ZIF-8@GO had large specific surface area, abundant functional groups and active sites on the surface, which could promote the adsorption of ZIF-8@GO for pollutants. In addition, based on zeta potential and X-ray photoelectron spectroscopy analysis, the primary adsorption mechanisms between ZIF-8@GO and Pb(II) were the surface complexation and electrostatic attraction, and the pi-pi interactions mainly contributed to the adsorption of 1-naphthylamine. In conclusion, as a new composite, ZIF-8@GO provides a reference idea for the removal of heavy metal ions and organic pollutants from water system. (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：410 / 420

页数：11

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