Facile synthesis of polyoxometalate-modified metal organic frameworks for eliminating tetrabromobisphenol-A from water
文献类型： 外文期刊
作者： Li, Xiang 1 ; Pillai, Suresh C. 2 ; Wei, Lan 1 ; Liu, Zhongzhen 1 ; Huang, Lianxi 1 ; Huang, Qing 1 ; Jia, Xiaoshan 4 ; H 1 ;
作者机构： 1.Guangdong Acad Agr Sci, Inst Agr Resources & Environm, Key Lab Plant Nutr & Fertilizer South Reg, Minist Agr,Guangdong Key Lab Nutrient Cycling & F, Guangzhou 510640, Guangdong, Peoples R China
2.Ctr Precis Engn Mat & Mfg Res, Ash Lane, Sligo, Ireland
3.Inst Technol Sligo, Dept Environm Sci, Nanotechnol & Bioengn Res Div, Ash Lane, Sligo, Ireland
4.Sun Yat Sen Univ, Sch Environm Sci & Engn, Guangzhou 510275, Guangdong, Peoples R China
5.Tsinghua Univ, Sch Environm, Beijing 100084, Peoples R China
6.Sejong Univ, Dept Environm & Energy, Seoul 05006, South Korea
7.Foshan Univ, Biochar Engn Technol Res Ctr Guangdong Prov, Sch Environm & Chem Engn, Foshan 528000, Guangdong, Peoples R China
8.Zhejiang A&F Univ, Key Lab Soil Contaminat Bioremediat Zhejiang Prov, Hangzhou 311300, Zhejiang, Peoples R China
关键词： PWA modified Cu-BTC; TBBPA; Adsorption; Response surface methods
期刊名称：JOURNAL OF HAZARDOUS MATERIALS （ 影响因子：10.588； 五年影响因子：10.129 ）
ISSN： 0304-3894
年卷期： 2020 年 399 卷
页码：
收录情况： SCI
摘要： Removal of tetrabromobisphenol-A (TBBPA) from wastewater is of significance to protect the aquatic life. The present study reports the facile preparation of polyoxometalate-modified metal-organic framework (MOFs) materials for TBBPA removal from water. The polyoxometalate-modified MOFs exhibited significantly higher affinity towards TBBPA than the control MOFs. The experimental data were fitted with the Langmuir, Freundlich and Dubinin-Radushkevich models. The TBBPA adsorption onto modified MOFs fitted the pseudo-second-order kinetic model. The equilibrium adsorption isotherms showed that the adsorption of TBBPA can be fitted by the Langmuir model. The maximum adsorption capacity of adsorbent composites reached 3.65 mg/g, with 95 % removal of TBBPA. The thermodynamic parameters indicated that adsorption was spontaneous. A blue shift of phosphorus peaks obtained from XPS spectra implied the formation of intrinsic chemical bonding between TBBPA and MOFs composites. Moreover, response surface methodology was employed to characterize the TBBPA adsorption in the co-existence of different factors. BPA had strong competition for TBBPA adsorption in a wide range of pH, but not at the middle level of Ca2+ concentration. Polyoxometalate-modified MOFs can easily be recycled using a simple organic solvent washing. This study provides a novel strategy for developing cost effective adsorbents to remove TBBPA from contaminated water.
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