title: Novel thymine-functionalized MIL-101 prepared by post-synthesis and enhanced removal of Hg(2+) from water.
abstract: A novel thymine-functionalized MIL-101 (MIL-101-Thymine) material was synthesized using a post-synthesis method to remove mercury at a high efficiency. MIL-101-Thymine was successfully prepared in this work and was confirmed by several characterization methods, such as (13)C nuclear magnetic resonance, X-ray diffraction, and infrared spectroscopy. The Hg(2+) adsorption agreed well with the Langmuir model, and the maximum adsorption capacity was 51.27mg/g. The adsorption rate fit with the pseudo-second-order kinetic model. Furthermore, MIL-101-Thymine exhibited excellent selectivity towards Hg(2+) over other cations, and the maximum value of the selective coefficient reached 947.34; this result is very likely due to the highly selective interactions of T-Hg(2+)-T in MIL-101-Thymine. The result of X-ray photoelectron spectroscopy also showed that Hg(2+) was coordinated with the N of thymine in MIL-101-Thymine. Moreover, the results of the thermogravimetric analysis and adsorption experiments showed that the Hg atom was two-coordinated with the thymine group. MIL-101-Thymine was used to remove trace Hg(2+) in real water samples, and satisfactory recoveries were obtained.
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China. Electronic address: luoxubiao@126.com.
authors.forename: Xubiao
authors.initials: X
authors.lastname: Luo
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
authors.forename: Tingting
authors.initials: T
authors.lastname: Shen
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: Ding
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
authors.forename: Weiping
authors.initials: W
authors.lastname: Zhong
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China.
authors.forename: Jianfeng
authors.initials: J
authors.lastname: Luo
authors.affiliation: Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle, Nanchang 330063, PR China; College of Environmental and Chemical Engineering, Nanchang Hangkong University, Nanchang 330063, PR China. Electronic address: sllou@hnu.edu.cn.
authors.forename: Shenglian
authors.initials: S
authors.lastname: Luo
keywords: Adsorption; Application; Mercury; Post-synthesis; Thymine-functionalized MIL-101