Metal-Sensitive Functionalization and Self-Assembly of Bimetallic Nanocrystals
双金属纳米晶的金属敏感功能化和自组装
基本信息
- 批准号:2002653
- 负责人:
- 金额:$ 45万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-01-01 至 2024-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The Macromolecular, Supramolecular, and Nanochemistry Program in the Chemistry Division supports Professor Dong Qin and her group at the Georgia Institute of Technology to develop tiny crystals called bimetallic nanocrystals. Their bimetallic nanocrystals contain two metals whose chemical function and spatial position within the nanocrystals are precisely controlled. Metal nanocrystals play a vital role in enabling catalysis for energy conversion, environmental protection, and organic synthesis. Despite some success, it remains a daunting challenge to monitor the catalytic reactions in real time by spatially confining the reactants to the catalytic sites while detecting the final and intermediate products in situ. The research team addresses this challenge by developing bimetallic nanocrystals in which one of the metals can serve as a catalyst while the other can report the ‘chemical fingerprint’ (signals associated with the reaction). The concepts, materials, and methods developed during this research may find use in a broad range of applications related to solid-state chemistry, catalysis, sensing, and photonics. This team recruits women and minority students as well as those from community colleges and minority institutions for summer research. This effort is carried out in collaboration with the National Nanotechnology Coordinated Infrastructure called the Southeastern Nanotechnology Infrastructure Corridor. In this research supported by the Macromolecular, Supramolecular and Nanochemistry (MSN) Program, Professor Qin’s team develops new design principles and methods to fabricate a novel class of bifunctional nanoreactors from Ag@M (M: Pt, Pd, and Rh) core-frame nanocubes via metal-selective surface functionalization and self-assembly. Specifically, molecules bearing isocyanide groups at the two ends are used to selectively bind to the M atoms on the edges of the core-frame nanocubes, serving as “clips” to bring two nanocubes face to face for the generation of a dimer. The gap region between the two nanocubes naturally presents a well-controlled nanoreactor, in which the side faces can be orthogonally functionalized with the reactants while the M atoms not coordinated by isocyanide will serve as the catalyst. Due to a strong plasmonic coupling between the two Ag nanocubes separated by a gap of only a few nanometers, the nanoreactor offers a unique capability to monitor various types of important catalytic reactions by in situ SERS. The model reactions include the hydrogenation of nitroaromatics for the production of thermodynamically unfavorable products such as hydroxylamine and azo compounds, as well as the bond-selective hydrogenation of cinnamaldehyde, a catalytic reaction pivotal to the production of fragrance, agrochemical, and pharmaceutical compounds. This research not only enables real-time characterization of heterogeneous catalytic reactions but also sheds light on the rational design of new or improved catalyst materials.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.
化学部的大分子,超分子和纳米化学计划支持佐治亚理工学院的Dong Qin及其小组,以开发称为双金属纳米晶体的微型晶体。它们的双金属纳米晶体包含两种金属,其化学功能和空间位置在纳米晶体中得到精确控制。金属纳米晶体在使能量转化,环境保护和有机合成的催化中起着至关重要的作用。尽管取得了一些成功,但通过将反应物限制在催化位点的同时,在检测最终和中间产品的原位,实时监测催化反应仍然是一个艰巨的挑战。研究小组通过开发双金属纳米晶体来应对这一挑战,其中一种金属可以作为催化剂,而另一个可以报告“化学指纹”(与反应相关的信号)。在这项研究期间开发的概念,材料和方法可能会在与固态化学,催化,灵敏度和光子学有关的广泛应用中使用。该团队报告了妇女和少数民族学生以及社区大学和少数民族机构的夏季研究。这项工作是与称为东南纳米技术基础设施走廊的国家纳米技术协调基础设施合作进行的。在这项研究的支持下,由大分子,超分子和纳米化学(MSN)计划支持,QIN教授的团队发展新设计原理和方法,以通过AG@m(M:M:PT,PT,PD,PD和RH)核心纳米型纳米型纳米构造的纳米型纳米型纳米型纳米构造纳米构造的纳米构造型纳米型纳米构造型纳米型纳米构造型纳米构造的表面效果和自我效果。具体而言,两端的轴承异氰化物基团的分子用于选择性地与核心框纳米纸的边缘的M原子结合,用作“夹子”,以使两个纳米容器面对面对二聚体的产生。两种纳米管之间的间隙区域自然显示出良好的控制纳米反应器,其中侧面可以与反应物正交功能化,而不是由异氰酸酯协调的M原子将用作催化剂。由于两种Ag纳米纸之间的等离激元耦合仅由几个纳米隔开,因此纳米反应器具有独特的能力,可通过原位SERS监测各种类型的重要催化反应。该模型反应包括硝化产物的氢化,用于生产热力学不利的产物,例如羟胺和氮杂化合物,以及肉桂醛的键选择性氢化,这是一种催化反应,可促催化反应,以产生香料,农业化学和药物化合物的产生。这项研究不仅可以实时表征异质性催化反应,而且还阐明了新的或改进的催化剂材料的合理设计。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标准的智力优点通过评估来获得的支持。
项目成果
期刊论文数量(8)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Facile Synthesis of Ru Nanoboxes with a Hexagonal Close‐Packed Structure by Templating with Ag Nanocubes and Their Catalytic Properties
以银纳米立方体为模板轻松合成具有六方密堆积结构的钌纳米盒及其催化性能
- DOI:10.1002/chem.202302603
- 发表时间:2023
- 期刊:
- 影响因子:0
- 作者:Yu, Hansong;Ding, Yong;Wang, Peng;Nguyen, Quynh;Xia, Younan;Qin, Dong
- 通讯作者:Qin, Dong
Understanding the Role of Poly(vinylpyrrolidone) in Stabilizing and Capping Colloidal Silver Nanocrystals
了解聚(乙烯基吡咯烷酮)在稳定和封端胶体银纳米晶体中的作用
- DOI:10.1021/acsnano.1c01668
- 发表时间:2021
- 期刊:
- 影响因子:17.1
- 作者:Yang, T.-H.;Ahn, J.;Shi, S.;Qin, D.
- 通讯作者:Qin, D.
Framing Silver Nanocrystals with a Second Metal to Enhance Shape Stability and Expand Functionality
用第二种金属构建银纳米晶体以增强形状稳定性并扩展功能
- DOI:10.1021/accountsmr.1c00269
- 发表时间:2022
- 期刊:
- 影响因子:14.6
- 作者:Qin, Dong
- 通讯作者:Qin, Dong
Recent developments in metal-based plasmonic nanomaterials
- DOI:10.1557/s43577-023-00592-7
- 发表时间:2023-09
- 期刊:
- 影响因子:5
- 作者:Veronica D. Pawlik;Shan Zhou;Dong Qin;Younan Xia
- 通讯作者:Veronica D. Pawlik;Shan Zhou;Dong Qin;Younan Xia
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Younan Xia其他文献
Marine-cloud brightening: an airborne concept
海洋云增亮:机载概念
- DOI:
10.1088/2515-7620/ad2f71 - 发表时间:
2024 - 期刊:
- 影响因子:2.9
- 作者:
C. Claudel;A. Lockley;F. Hoffmann;Younan Xia - 通讯作者:
Younan Xia
Fabrication of cell patches using scaffolds with a hexagonal array of interconnected pores (SHAIPs)
使用具有六角形互连孔阵列 (SHAIP) 的支架制造细胞贴片
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Yu Zhang;Younan Xia - 通讯作者:
Younan Xia
Synthesis and characterization of metal nanostructures with hollow interiors
内部空心金属纳米结构的合成与表征
- DOI:
10.1117/12.504815 - 发表时间:
2003 - 期刊:
- 影响因子:0
- 作者:
Yugang Sun;Younan Xia - 通讯作者:
Younan Xia
Application of fluorescent Eu:Gd2O3 nanoparticles to the visualization of protein micropatterns
荧光 Eu:Gd2O3 纳米粒子在蛋白质微图案可视化中的应用
- DOI:
10.1117/12.588722 - 发表时间:
2005 - 期刊:
- 影响因子:1.8
- 作者:
D. Dosev;M. Nichkova;Maozi Liu;B. Guo;Gang;Younan Xia;B. Hammock;I. Kennedy - 通讯作者:
I. Kennedy
Nanofibers: Generation of Electrospun Nanofibers with Controllable Degrees of Crimping Through a Simple, Plasticizer-Based Treatment (Adv. Mater. 16/2015)
纳米纤维:通过简单的增塑剂处理生成具有可控卷曲程度的静电纺丝纳米纤维(Adv. Mater. 16/2015)
- DOI:
- 发表时间:
2015 - 期刊:
- 影响因子:0
- 作者:
Wenying Liu;Justin H. Lipner;Christine H. Moran;Liangzhu Feng;Xiyu Li;S. Thomopoulos;Younan Xia - 通讯作者:
Younan Xia
Younan Xia的其他文献
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{{ truncateString('Younan Xia', 18)}}的其他基金
High-Entropy Alloy Nanocrystals with Controlled Compositions and Surface Structures
成分和表面结构可控的高熵合金纳米晶
- 批准号:
2333595 - 财政年份:2024
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
Noble-Metal Nanocrystals in Metastable Phases
亚稳态贵金属纳米晶体
- 批准号:
2105602 - 财政年份:2022
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
Rational Synthesis of Alloy Nanocrystals with Controlled Compositions and Facets for Electrocatalysis
电催化用可控成分和晶面的合金纳米晶的合理合成
- 批准号:
2219546 - 财政年份:2022
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Fabrication and Scalable Production of Nanobottles
纳米瓶的制造和规模化生产
- 批准号:
2137669 - 财政年份:2021
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Bimetallic Janus Nanocrystals and Their Derivatives
双金属Janus纳米晶及其衍生物
- 批准号:
1804970 - 财政年份:2018
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Continuous and Scalable Manufacturing of Platinum-Nickel Nanocatalysts for Polymer Electrolyte Membrane Fuel Cells
用于聚合物电解质膜燃料电池的铂镍纳米催化剂的连续和规模化制造
- 批准号:
1634687 - 财政年份:2016
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Atomic Layer-by-Layer Deposition of Pt on Pd Nanocrystals with Well-Controlled Facets
晶面可控的 Pd 纳米晶体上 Pt 原子层沉积
- 批准号:
1505441 - 财政年份:2015
- 资助金额:
$ 45万 - 项目类别:
Standard Grant
Towards a Quantitative Knob for Controlling the Shape of Noble-Metal Nanocrystals
用于控制贵金属纳米晶体形状的定量旋钮
- 批准号:
1505400 - 财政年份:2015
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
Seeded Growth of Noble-Metal Nanocrystals
贵金属纳米晶体的种子生长
- 批准号:
1215034 - 财政年份:2012
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
Seeded Growth of Noble-Metal Nanocrystals
贵金属纳米晶体的种子生长
- 批准号:
1104614 - 财政年份:2011
- 资助金额:
$ 45万 - 项目类别:
Continuing Grant
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