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

该奖项由无机，生物无机和有机化学计划支持教授帕特里克E。Hoggard与圣克拉拉大学合作，开发催化光降解氯碳和溴碳水溶液的方法，分别产生二氧化碳和盐酸或氢溴酸。 这项研究将探索三种潜在的有用的催化途径（光解离，光氧化和光还原），每一个都是一个热过程恢复原始的过渡金属络合物。 Hoggard教授还将研究负载型催化剂，以促进过渡金属的回收和再生。 卤化碳，特别是三卤甲烷，作为消毒副产物出现，并且以高于EPA指南所确定的浓度存在于许多市政供水中。 这项研究可能提供一种被动补救水库遭受高水平的卤化碳，只使用阳光的手段。 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修复工作做出贡献。

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.