NTE: Engineering of Nanospaces: Hybrid Membranes for Environmentally Important Separations (TSE03-P)

提案题目：NTE：纳米空间工程：用于环境重要分离的杂化膜提案编号：cts -0329386首席研究员：David for机构：Texas a&m university本提案的目的是设计，合成和评估有机-无机杂化膜的应用，如从空气或水流中去除微量挥发性有机污染物。用于这两种应用的膜过程将是蒸汽渗透和渗透蒸发。膜材料将基于介孔无机框架，平均孔径从1到100纳米不等。框架的多孔空间将通过化学方式将树突分子附着在孔表面来修饰。这种结构将在一定程度上同时控制膜的化学性质和自由体积，这是聚合物或无机材料难以实现的。设计目标将通过操纵树状大分子的化学性质、孔隙几何形状和树状大分子表面密度来实现。有机树状大分子将被设计成吸附目标污染物而不永久隔离它们。就更广泛的影响而言，学生将受益于连接材料合成和分离过程的跨学科经验。所生产的膜具有在有毒污染物进入环境之前将其去除的潜力。

Proposal Title: NTE: Engineering of Nanospaces: Hybrid Membranes for Environmentally Important SeparationsProposal Number: CTS-0329386Principal Investigator: David FordInstitution: Texas A&M UniversityThe objective of this proposal is to design, synthesize, and evaluate organic-inorganic hybrid membranes for applications such as removal of trace volatile organic contaminants from air or water streams. The membrane processes employed for these two applications will be vapor permeation and pervaporation. Membrane materials will be based on mesoporous inorganic frameworks with average pore sizes ranging from 1 to 100 nm. The porous spaces of the framework will be modified by chemically attaching dendrimeric molecules to the pore surfaces. This architecture will afford a degree of simultaneous control over both the chemistry and free volume of the membrane, which is difficult to achieve with polymeric or inorganic materials. Design goals will be accomplished by manipulating the dendrimer chemistry, pore geometry, and dendrimer surface density. Organic dendrimers will be designed to adsorb target contaminants without permanently sequestering them. In terms of the broader impacts, the students will benefit from an interdisciplinary experience that connects materials synthesis and separation processes. The membranes produced have the potential to remove toxic contaminants before they enter the environment.