Excellence in Research: CAS: Design Principles for Enabling the Adsorption of Heavy Metal Cations and Oxoanions in Layered Double Hydroxides through Targeted Functionalization

卓越研究：CAS：通过靶向功能化实现层状双氢氧化物中重金属阳离子和含氧阴离子吸附的设计原理

• 批准号: 2100797
• 负责人: Muhammad Saiful Islam
• 金额: $ 46万
• 依托单位: Jackson State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-06-15 至 2025-05-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2100797&HistoricalAwards=false
• 关键词: Excellence; Research; CAS; Design; Principles

In this Excellence in Research project, Professor Muhammad Islam of the Department of Chemistry, Physics and Atmospheric sciences at Jackson State University is developing new classes of two-dimensional (2D) material that exhibit intriguing adsorption and chemical exchange properties. The central goals of this project are to design, synthesize and functionalize a unique class of hybrid layered materials with an enhanced built-in property for the rapid, concurrent, highly efficient sequestration of a chemically distinct class of toxic metallic and non-metallic pollutants relevant to environmental remediation and wastewater treatment. The research activities of this project lie at the nexus of inorganic, materials and environmental chemistry. Thus, this project will serve as a multidisciplinary platform to educate the students in the STEM (science, technology, engineering and mathematics) fields. Developing scientific literacy and translation of science to a broader audience are also key to this research project. This research is expected to expand our knowledge of layered materials design principles to enable the development of new classes of adsorbents for hard, borderline, and soft Lewis acidic heavy metal cations, and oxyanions. The proposed efforts could advance the chemistry of metal-polysulfides and metal-oxypolysulfides intercalated into hybrid single-phase 2D layer double hydroxides (LDHs) and could develop a correlation among their distinct chemical entities and their synergistic interactions with inorganic cationic and anionic species. This project will investigate the impacts of a number of factors on their adsorption behaviors. Such factors include metal sulfide ratios, valence states of the polysulfides, cation exchanged into the interlayered metal-polysulfide anions, chemically distinct oxides and sulfides in a single anionic moiety, 2D layered host LDHs with ion-exchangeable cations, different degrees of host-guest interactions, and variable inter-layered distances.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在这个卓越的研究项目中，杰克逊州立大学化学、物理和大气科学系的Muhammad Islam教授正在开发新的二维（2D）材料，这些材料具有有趣的吸附和化学交换特性。该项目的中心目标是设计，合成和功能化一类独特的混合层状材料，具有增强的内在性能，用于快速，同时，高效地隔离与环境修复和废水处理相关的化学性质不同的有毒金属和非金属污染物。该项目的研究活动处于无机化学、材料化学和环境化学的结合点。因此，该项目将作为一个多学科平台，教育学生在STEM（科学，技术，工程和数学）领域。发展科学素养和将科学翻译给更广泛的受众也是这个研究项目的关键。这项研究预计将扩大我们的层状材料设计原理的知识，使硬，边界和软刘易斯酸性重金属阳离子和含氧阴离子的吸附剂的新类别的发展。 所提出的努力可以推进金属-多硫化物和金属-氧多硫化物插入混合单相2D层双氢氧化物（LDH）的化学，并且可以开发它们不同的化学实体之间的相关性以及它们与无机阳离子和阴离子物种的协同相互作用。 本计画将探讨各种因素对吸附行为的影响。这些因素包括金属硫化物比率、多硫化物的价态、交换到层间金属-多硫化物阴离子中的阳离子、单个阴离子部分中化学上不同的氧化物和硫化物、具有可离子交换阳离子的2D层状主体LDH、不同程度的主体-客体相互作用、和变量间-该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响进行评估，被认为值得支持审查标准。