Sustainable synthesis and remarkable adsorption capacity of MOF/graphene oxide and MOF/CNT based hybrid nanocomposites for the removal of Bisphenol A from water

被引：153

作者：

Ahsan, Md Ariful ^{[1
,7
]}

Jabbari, Vahid ^{[2
]}

Islam, Md Tariqul ^{[1
]}

Turley, Reagan S. ^{[1
]}

Dominguez, Noemi ^{[3
]}

Kim, Hoejin ^{[4
]}

Castro, Edison ^{[1
]}

Hernandez-Viezcas, Jose Angel ^{[1
]}

Curry, Michael L. ^{[5
]}

Lopez, Jorge ^{[6
]}

Gardea-Torresdey, Jorge L. ^{[1
,7
]}

Noveron, Juan C. ^{[1
,7
]}

机构：

[1] Univ Texas El Paso, Dept Chem, El Paso, TX 79968 USA

[2] Southern Methodist Univ, Dept Chem, Dallas, TX 75205 USA

[3] Univ Texas El Paso, Dept Met Mat & Biomed Engn, El Paso, TX 79968 USA

[4] Univ Texas El Paso, Dept Mech Engn, El Paso, TX 79968 USA

[5] Tuskegee Univ, Dept Chem, Tuskegee, AL 36088 USA

[6] Univ Texas El Paso, Dept Phys, El Paso, TX 79968 USA

[7] Univ Texas El Paso, Nanosyst Engn Res Ctr Nanotechnol Enabled Water T, El Paso, TX 79968 USA

来源：

SCIENCE OF THE TOTAL ENVIRONMENT | 2019年 / 673卷

关键词：

Bisphenol A; Cu-BDC MOF; Carbon nanotubes; Graphene oxide; Nanocomposite; Water treatment; GRAPHITE OXIDE; CARBONACEOUS MATERIALS; EFFECTIVE ADSORBENT; GREEN SYNTHESIS; COMPOSITES; SULFAMETHOXAZOLE; NANOPARTICLES; TETRACYCLINE; PERFORMANCE; CONVERSION;

D O I：

10.1016/j.scitotenv.2019.03.219

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A series of novel absorbents based on Cu-BDC MOFs decorated over graphene oxide (GrO) and carbon nanotubes (CNTs) hybrid nanocomposites, namely Cu-BDC@GrO and Cu-BDC@CNT, are synthesized via a facile and one-pot green solvothermal method for water remediation. The nanocomposites were characterized by XRD, TEM, SEM, EDS, Raman, FTIR, TGA, XPS, Zetasizer and ICP-OES instruments. XRD results confirmed the high crystalline structure of the synthesized hybrid nanocomposites. Morphological analysis by SEM and TEM verified the successful decoration of nano-sized Cu-BDC MOFs over GrO and CNT platforms; whereas, EDS and XPS analysis confirmed the presence of all components in the hybrid nanocomposites. Bisphenol A was used in this study as a model organic pollutant that is sometimes present in the industrial wastewater to test the adsorption capacity of the prepared hybrid nanomaterials toward their removal from water. The hybrid nanomaterials showed remarkable adsorption capacity of 182.2 and 164.1 mg/g toward the removal of BPA, which was several times higher than that of 60.2 mg/g for Cu-BDC MOF itself. The Langmuir, Freundlich, Temkin and D-R isotherm models were applied to analyze the experimental data and the results revealed that the Freundlich model describes the experimental data best. A kinetic study was carried out and it showed that the prepared nanomaterials could remove maximum amount of BPA from water in 30 min. The pseudo-first order, pseudo-second order and intra-particle diffusion models were applied to evaluate the kinetic data and the results suggested that the kinetics data could be well fitted to the pseudo-second order kinetic model. Additionally, the BAP adsorption process onto the hybrid nanocomposites was spontaneous and exothermic. The pi-pi interactions between the BPA and hybrid nanomaterials played a vital role during the BPA adsorption process. The higher adsorption capacity and water stability makes them a good candidate for water remediation applications. (C) 2019 Elsevier B.V. All rights reserved.

引用

页码：306 / 317

页数：12

共 53 条

[1] Biosorption of bisphenol A and sulfamethoxazole from water using sulfonated coffee waste: Isotherm, kinetic and thermodynamic studies [J].