RUI:CAS: Metal Phosphides on Nanostructured Indium Oxide - New Photocatalysts for CO2 Hydrogenation

RUI:CAS：纳米结构氧化铟上的金属磷化物——用于二氧化碳加氢的新型光催化剂

• 批准号: 2101259
• 负责人: Mark Bussell
• 金额: $ 36.65万
• 依托单位: Western Washington University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2021
• 资助国家: 美国
• 起止时间: 2021-08-01 至 2025-07-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2101259&HistoricalAwards=false
• 关键词: RUI; CAS; Metal; Phosphides; Nanostructured

With the support of the Chemical Catalysis program in the Division of Chemistry, Mark Bussell and Robert Berger of Western Washington University will study the photothermal catalytic conversion of carbon dioxide. A particularly attractive but scientifically imposing challenge is the photocatalytic conversion of carbon dioxide to fuels such as methanol using sunlight. In this project, a new class of catalytic materials that consists of a visible light-absorbing metal phosphide dispersed on nanostructured indium oxide supports will be developed for the photothermal conversion of carbon dioxide. The catalyst design strategy employs a relatively new area of study within the heterogeneous catalysis community, namely photothermal catalysis, in which light absorption is optimized for the catalytic reaction, and localized heating within catalyst particles optimized for efficient conversion of reactants to products. The experimental investigation will be led by PI Bussell while the computational studies will be led by co-PI Berger. The project will involve undergraduate and M.S. students, and a course-based undergraduate research experience (CURE) investigating the photocatalytic properties of metal oxides will be developed for implementation at a nearby community college.Mark Bussell and Robert Berger of Western Washington University will investigate the photothermal catalytic conversion of carbon dioxide to carbon monoxide via the reverse water-gas shift reaction over metal phosphide-oxide hybrid materials. The photocatalysts to be developed will comprise visible light-absorbing metal phosphides (NixPy, In(x)Ga(1-x)P) dispersed on nanostructured indium oxide supports. The metal phosphides will have distinct and tunable electronic and structural properties, and the two kinds of indium oxide materials to be employed (nanocubes and nanorods) will enable the effects of support morphology to be probed. A range of structural and spectroscopic methods including in situ Raman spectroscopy will be used to characterize the photocatalysts, and the experimental studies will be complemented by density functional theory (DFT) investigations of the electronic and interfacial properties of the metal phosphide-oxide materials. The outcomes of this research will include the development of a new class of earth-abundant photothermal catalysts and an improved fundamental understanding of the roles of the metal phosphide and oxide components in CO2 hydrogenation and related processes.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

在化学系化学催化项目的支持下，西华盛顿大学的Mark Bussell和Robert Berger将研究二氧化碳的光热催化转化。一个特别有吸引力但在科学上面临的挑战是利用阳光将二氧化碳光催化转化为甲醇等燃料。 在该项目中，将开发一种新型催化材料，由分散在纳米结构氧化铟载体上的可见光吸收金属磷化物组成，用于二氧化碳的光热转化。 催化剂设计策略采用了多相催化领域中相对较新的研究领域，即光热催化，其中针对催化反应优化了光吸收，并针对反应物有效转化为产物而优化了催化剂颗粒内的局部加热。 实验研究将由 PI Bussell 领导，而计算研究将由联合 PI Berger 领导。 该项目将涉及本科生和硕士。西华盛顿大学的 Mark Bussell 和 Robert Berger 将研究通过金属磷化物-氧化物杂化材料上的逆水煤气变换反应将二氧化碳光热催化转化为一氧化碳。待开发的光催化剂将包含分散在纳米结构氧化铟载体上的可见光吸收金属磷化物（NixPy、In(x)Ga(1-x)P）。 金属磷化物将具有独特且可调节的电子和结构特性，并且所使用的两种氧化铟材料（纳米立方体和纳米棒）将能够探测载体形态的影响。 包括原位拉曼光谱在内的一系列结构和光谱方法将用于表征光催化剂，并且实验研究将通过金属磷化物-氧化物材料的电子和界面特性的密度泛函理论（DFT）研究来补充。这项研究的成果将包括开发一种地球储量丰富的新型光热催化剂，以及提高对金属磷化物和氧化物组分在二氧化碳加氢及相关过程中的作用的基本了解。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。