Research Initiation Award: Photoinduced Redox Reactions on Semiconductor Particles; Photoelectrochemistry for Organic Synthesis

研究启动奖：半导体颗粒的光诱导氧化还原反应；

• 批准号: 9308282
• 负责人: Yuzhuo Li
• 金额: $ 11.5万
• 依托单位: Clarkson University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-01 至 1997-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9308282&HistoricalAwards=false
• 关键词: Research; Initiation; Award; Photoinduced; Redox

Yuzhuo Li 9308282 The objective of this work is to use heterogenous semiconductor systems for photocatalytic organic synthesis. Emphasis is on intermediates useful in the pharmaceutical, agrochemical, polymer, and dye industries. Reactor configurations that are energy efficient and cost effective are designed and new semiconductor systems are tested. Specific tasks include applications of photocatalytic reduction (using titania photocatalyst) to aldehydes, azides, nitrites, and nitro compounds; photocatalytic fixation of carbon dioxide into aromatic compounds on semiconductor surfaces; preparation of monodispersed particles with a core of tungsten trioxide coated with ferric oxide and evaluation of their photocatalytic potential in redox reactions; preparation of monodispersed titania coated with conducting polymers and evaluation of their utility in the reduction of nitro compounds; and design of a flow photochemical reactor for high product output and low solvent consumption. In this study, photoinduced (light inititiated) transformations of organic compounds using particulate semiconductors as catalysts are explored. Emphasis is on reduction of organic compounds containing oxygen or nitrogen. This approach requires no expendable reducing agents, which are a major source of toxic-metal waste. In addition to its potential for avoidance of toxic byproducts, this approach may also be useful for destruction of existing toxic wastes.

李玉卓9308282 本工作的目的是利用多相半导体系统的光催化有机合成。 重点是在医药，农业化学，聚合物和染料工业中有用的中间体。 设计了节能和成本效益高的反应堆配置，并测试了新的半导体系统。 具体任务包括光催化还原的应用（使用二氧化钛光催化剂）转化为醛、叠氮化物、亚硝酸盐和硝基化合物;将二氧化碳光催化固定为半导体表面上的芳香族化合物;制备以三氧化二铁为核心的单分散颗粒，并评估其在氧化还原反应中的光催化潜力;制备涂有导电聚合物的单分散二氧化钛并评估其在还原硝基化合物中的用途;以及设计高产物产量和低溶剂消耗的流动光化学反应器。 在这项研究中，光诱导（光引发）转换的有机化合物使用颗粒半导体作为催化剂进行了探索。 重点是还原含氧或氮的有机化合物。 这种方法不需要消耗性还原剂，这是有毒金属废物的主要来源。 除了避免有毒副产品的潜力外，这种方法还可用于销毁现有的有毒废物。