SusChEM: New Ni Macrocyclic Catalysts for Solar Driven Carbon Dioxide Reduction

SusChEM：用于太阳能驱动二氧化碳减排的新型镍大环催化剂

• 批准号: 1609151
• 负责人: Tong Ren
• 金额: $ 42万
• 依托单位: Purdue University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2016
• 资助国家: 美国
• 起止时间: 2016-07-15 至 2021-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1609151&HistoricalAwards=false
• 关键词: SusChEM; New; Ni; Macrocyclic; Catalysts

In this project funded by the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Professor Tong Ren of the Department of Chemistry at Purdue University is studying new complexes of the element, nickel, that can be used to catalyze reactions of carbon dioxide using sunlight. Professor Ren is synthesizing cyclic organic molecules that will bind to the nickel atom and remain stable during the course of the reaction. These product molecules are then being incorporated into solar cells. Professor Ren is providing a high level of level of interdisciplinary education and training for undergraduate and graduate students in chemical science, with an emphasis on broadening the participation of groups that are underrepresented in STEM disciplines. He and his students are also designing K-12 level laboratory teaching modules that teach elements of sustainable science and technology. Professor Ren is synthesizing macrocycle complexes of nickel with the aim of discovering ones that are among the best catalysts for carbon dioxide reduction. Nickel and cobalt macrocyclic complexes are among the best catalysts for carbon dioxide reduction, yet their performances, both over-potential and catalytic turnover, remain to be desired for large scale application. Initial experiments are focusing on improving both the carbon dioxide binding to the metal center and the stability of the complexes. To accomplish this aim, Professor Ren is introducing various substituents on the carbon atoms of the macrocyle with the objective of tuning the conformation of complex. He is also examining ways to stabilize carbon dioxide bound intermediates and reduce activation barriers through the introduction of pyridyl and proton-donor substituents. Optimized catalysts are being incorporated into photocells with a p-NiO photocathode that perform solar-driven carbon dioxide reduction. Professor Ren is working with Purdue's Science Express Program in bringing modern laboratory experiments to rural high schools across Indiana.

在这个由化学系高分子、超分子和纳米化学项目资助的项目中，普渡大学化学系教授童仁正在研究镍元素的新型配合物，该配合物可用于催化二氧化碳反应阳光。 任教授正在合成环状有机分子，这些分子将与镍原子结合并在反应过程中保持稳定。 然后这些产物分子被整合到太阳能电池中。 任教授为化学科学领域的本科生和研究生提供高水平的跨学科教育和培训，重点是扩大STEM学科中代表性不足的群体的参与。 他和他的学生还在设计 K-12 级别的实验室教学模块，教授可持续科学技术的要素。任教授正在合成镍大环配合物，目的是发现二氧化碳还原的最佳催化剂。 镍和钴大环配合物是二氧化碳还原的最佳催化剂之一，但其过电势和催化转化率的性能仍需大规模应用。初步实验的重点是改善二氧化碳与金属中心的结合以及络合物的稳定性。 为了实现这一目标，任教授在大环的碳原子上引入各种取代基，以调节配合物的构象。 他还在研究通过引入吡啶基和质子供体取代基来稳定二氧化碳结合中间体并减少活化势垒的方法。 优化的催化剂被整合到带有 p-NiO 光电阴极的光电池中，可进行太阳能驱动的二氧化碳还原。任教授正在与普渡大学的科学快车项目合作，将现代实验室实验带到印第安纳州的农村高中。