RUI: Near-UV and Visible Light Photocatalysis of Halocarbon Degradation by Metal Complexes

RUI：近紫外和可见光光催化金属配合物降解卤代烃

• 批准号: 0749681
• 负责人: Patrick Hoggard
• 金额: $ 19.5万
• 依托单位: Santa Clara University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-02-01 至 2012-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0749681&HistoricalAwards=false
• 关键词: RUI; Near; UV; Visible; Light

This award by the Inorganic, Bioinorganic, and Organometallic Chemistry Program supports the work of Professor Patrick E. Hoggard at Santa Clara University to develop methods that catalytically photodegrade aqueous solutions of chloro- and bromocarbons to produce carbon dioxide and hydrochloric or hydrobromic acid, respectively. This research will explore three potentially useful catalytic pathways (photodissociation, photooxidation and photoreduction), each followed by a thermal process restoring the original transition metal complex. Professor Hoggard will also examine supported catalysts to facilitate the recovery and recycability of the transition metals. Halocarbons, especially trihalomethanes, arise as disinfection byproducts and are present in many municipal water supplies at concentrations higher than those established by EPA guidelines. This research may provide a means of passively remediating reservoirs that suffer from high levels of halocarbons, using only sunlight. Undergraduate students engaged in this research will learn a variety of synthetic and analytical techniques while actively contributing to important environmental remediation efforts.

这项由无机化学、生物无机化学和金属有机化学计划颁发的奖项支持圣克拉拉大学的Patrick E.Hoggard教授的工作，他开发了催化光降解氯和溴碳水溶液的方法，分别产生二氧化碳和盐酸或氢溴酸。这项研究将探索三条潜在有用的催化途径(光解、光氧化和光还原)，每条途径之后都会有一个热过程来恢复原来的过渡金属络合物。霍加德教授还将研究负载型催化剂，以促进过渡金属的回收和再循环。卤代烃，特别是三卤代甲烷，作为消毒副产品出现，在许多市政供水中的浓度高于环境保护局指南规定的浓度。这项研究可能会提供一种被动修复只使用阳光的高水平卤代烃蓄水池的方法。从事这项研究的本科生将学习各种合成和分析技术，同时积极为重要的环境补救工作做出贡献。