The dual-configured hydrogen bonds induced by polymerized deep eutectic solvents-modified magnetic biochar enhanced the selectivity for 3,4-methylenedioxymethamphetamine
作者全名：Wei, Xin; Cao, Shurui; Tang, Yao; Wu, Duanhao; Su, Hongtao; Chen, Zhiqiong
作者地址：[Wei, Xin; Chen, Zhiqiong] Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China; [Cao, Shurui; Tang, Yao; Wu, Duanhao; Su, Hongtao] Southwest Univ Polit Sci & Law, Forens Identificat Ctr, Chongqing 401120, Peoples R China; [Cao, Shurui] Southwest Univ Polit Sci & Law, Criminal Invest Law Sch, Chongqing 401120, Peoples R China
通信作者：Chen, ZQ (通讯作者)，Chongqing Med Univ, Coll Pharm, Chongqing 400016, Peoples R China.
来源：ENVIRONMENTAL POLLUTION
ESI学科分类：ENVIRONMENT/ECOLOGY
WOS号：WOS:001249407200001
JCR分区：Q1
影响因子：7.6
年份：2024
卷号：356
期号：
开始页：
结束页：
文献类型：Article
关键词：Polymerized deep eutectic solvents; The dual -configured hydrogen bonds; Density functional theory; High selectivity
摘要：The accurate discovering and monitoring of 3,4-methylenedioxymethamphetamine (MDMA) are especially important because of its substantial toxicity and potential harm to human and the ecological systems. Three types of polymerized deep eutectic solvents functionalized magnetic biochar (MBC@poly (AA/AAC/AAm-ChCl)) were successfully synthesized to adsorb MDMA. The isotherm and kinetic data confirmed that MBC@poly (AAm-ChCl) had the strongest adsorption capacity, and the order of adsorption capacity is as follow: MBC@poly(AAm-ChCl) > MBC@poly(AA-ChCl) > MBC@poly(MAA-ChCl), which also revealed that the adsorption was heterogeneous multi-layer chemisorption. The findings of the characterizations manifested that MBC@poly(AAm-ChCl) was the optimal adsorbent owning to its higher nitrogen content, resulting in the formation of a greater number of hydrogen bonds. Due to the strong hydrogen bonding effect of C--O and -NH2 functional groups, MBC@poly (AAm-ChCl) exhibited the high selectivity towards MDMA under the coexistence of multiple chemical substances, and excellent adsorption performance over the pH range of 4-11. Urea as a hydrogen bond inhibitor further confirmed MBC@poly(AAm-ChCl) had high-density active hydrogen bonding sites. Furthermore, utilizing density functional theory (DFT) for simulating adsorption both before and after the process verified that the high selectivity of MBC@poly(AAm-ChCl) attributed to the formation of the dual-configured hydrogen bonds. This study provides support for the production of highly selective biochar for use in pretreatment during drug detection.
基金机构：Chongqing Municipal Education Commission [KJZD-M202300301, KJZD-M202200301, KJZD-K202100301]; Chongqing Science and Technology Commission [cstc2021jcyj-msxmX0715]
基金资助正文：<B>Acknowledgements</B> This work was supported by the Chongqing Municipal Education Commission (Grant KJZD-M202300301, KJZD-M202200301 and KJZD-K202100301) ; the Chongqing Science and Technology Commission (Grant No. cstc2021jcyj-msxmX0715) .
