CAREER: CAS: Chemical Pathways for the Synthesis of Dilute Metal Alloy and Multimetallic Complex Solid Solution Nanocrystals

职业：CAS：稀金属合金和多金属络合物固溶体纳米晶体合成的化学途径

• 批准号: 2239441
• 负责人: Xingchen Ye
• 金额: $ 70万
• 依托单位: Indiana University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2023
• 资助国家: 美国
• 起止时间: 2023-02-01 至 2028-01-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2239441&HistoricalAwards=false
• 关键词: CAREER; CAS; Chemical; Pathways; Synthesis

With the support of the Macromolecular, Supramolecular and Nanochemistry Program in the Division of Chemistry, Dr. Xingchen Ye of Indiana University Bloomington will develop new ways of making nanoscale metal alloys. In addition to potentially exhibiting unique chemical and physical properties, these nanoparticles contain earth-abundant, non-precious elements making them less expensive and more sustainable than the commonly used noble metal nanoparticles. These nanoparticles have the potential to enable new technologies in clean energy, photonics, pharmaceutical industry applications and more. The broader impacts of this project include educational and outreach initiatives that aim to increase interest in science among K-12 students and to improve undergraduate students’ readiness for graduate study in STEM fields. Specifically, Dr. Ye will develop a classroom teaching module called “Colloids-Microscopy-Data” to expose high school students to modern aspects of colloidal chemistry and microscopy imaging. In addition, an 8-week summer program will be created to engage undergraduate students, particularly those from underrepresented groups, in materials chemistry research. The Ye research group aims to establish chemical pathways for the synthesis of dilute metal alloy and complex multimetallic nanocrystals with well-defined shape and composition. In Aim 1, a library of dilute metal alloy nanocrystals will be synthesized and characterized, with the emphasis on non-precious yet chemically more challenging base metal systems. The catalytic and plasmonic properties of these nanocrystals will be evaluated to understand structure-property relationships. In Aim 2, a novel catalytic growth mechanism will be studied, which could provide access to diverse metal nanocrystals not yet available using existing synthetic methods. Finally, in Aim 3, the mechanisms and pathways for the formation of multimetallic nanocrystals consisting of five or more elements will be examined. An important goal of this research is to gain a better fundamental understanding of the factors that control the structures and compositions of these classes of nanoparticles.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.

在化学系的大分子，超分子和纳米化学计划的支持下，印第安纳大学布卢明顿的Xingchen Ye博士将开发出制造纳米级金属合金的新方法。除了可能具有独特的化学和物理特性外，这些纳米颗粒还包含土壤丰富的非纯粹元素，使其比常用的贵金属纳米颗粒便宜，更可持续。这些纳米颗粒有可能在清洁能源，光子学，制药行业应用等方面实现新技术。该项目的更广泛影响包括旨在提高K-12学生科学兴趣并改善本科生准备在STEM领域学习研究生学习的教育和外展计划。具体而言，Ye博士将开发一个称为“胶体 - 微镜数据”的课堂教学模块，以使高中生接触胶体化学和显微镜成像的现代方面。此外，还将创建一个为期8周的夏季计划，以吸引本科生，特别是来自代表性群体不足的人，参与材料化学研究。 YE研究小组旨在建立化学途径，以合成具有明确定义的形状和组成的稀有金属合金和复杂的多金属纳米晶体。在AIM 1中，将合成和表征一个稀有金属合金纳米晶体的库，重点是非公私但化学上更挑战的基准金属系统。这些纳米晶体的催化和等离子特性将进行评估以了解结构特性关系。在AIM 2中，将研究一种新型的催化生长机制，该机制可以使用现有的合成方法提供尚不可用的潜水金属纳米晶体。最后，在AIM 3中，将检查由五个或更多元素组成的多层纳米晶体形成的机制和途径。这项研究的一个重要目标是更好地了解控制这些类别的纳米颗粒的结构和组成的因素。该奖项反映了NSF的法定任务，并被认为是通过基金会的智力优点和更广泛影响的评估来审查标准的评估，被认为是宝贵的支持。

项目成果

Elucidating the role of seed structure in the heterometallic seeded growth of copper-based nanocrystals

• DOI: 10.3389/fnano.2023.1163390
• 发表时间: 2023-05-15
• 期刊: FRONTIERS IN NANOTECHNOLOGY
• 作者: Jeong, Soojin;Skalla, Rebecca X.;Ye, Xingchen
• 通讯作者: Ye, Xingchen