Transforming Noble Metal Nanostructure Synthesis Using Unconventional Synthetic Levers

使用非常规合成杠杆转变贵金属纳米结构合成

基本信息

批准号：
1803917
负责人：
Svetlana Neretina
金额：
$ 29.99万
依托单位：
University of Notre Dame
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2018
资助国家：
美国
起止时间：
2018-08-01 至 2021-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1803917&HistoricalAwards=false
关键词：
Transforming Noble Metal Nanostructure Synthesis

项目摘要

Non-Technical Abstract:Underpinning the electronics industry is a wafer-based processing science that is able to form intricate patterns of dissimilar materials with well-defined properties and interfaces that collectively perform a useful function. One of the biggest challenges is the establishment of a corresponding processing science that integrates these wafer-based technologies with the extraordinary optical, electronic, and chemical properties derived from metallic nanoparticles. Device prototyping has, however, been stifled by an inability to define complex metal nanostructures in organized patterns where interactions are possible between adjacent structures and with the underlying wafer material. The project being carried out aims to overcome this impediment by redefining the methodologies, instrumentation, and processing science needed to define wafer-based metal nanostructures, and in doing so, provide the capabilities inaccessible through conventional methods. The research activities are being integrated with undergraduate education that involves the supervision of research internships geared toward the advancement of laboratory instrumentation by students from the College of Engineering. Outreach activities place emphasis on the matriculation of women into the engineering profession.Technical Abstract:The research being carried out aims to provide an understanding of the altered chemistry that arises when well-understood seed-mediated noble metal nanostructure growth modes are subjected to four unconventional synthetic levers that become accessible when seeds are immobilized on a rigid crystalline substrate. It is founded on a synthetic strategy that is able to realize periodic arrays of complex noble metal nanostructures through a three stage synthetic scheme that uses (i) a lithography-defined shadow mask to fabricate nanostructured precursors at site-specific locations, (ii) directed assembly to transform them into single crystal templates, and (iii) solution-based chemistry to further transform them into complex nanostructures. Within the scope of this strategy lies the opportunity to incorporate a new set of synthetic levers into nanostructure synthesis that fundamentally alter well-established growth modes. The project is advancing the use and understanding of four such synthetic levers: (i) a flow of reactants past an anchored substrate, (ii) synthetically-active substrate materials, (iii) substrate-imposed epitaxy, and (iv) lithographically-imposed barriers to growth. Graduate students are being trained in nanostructure synthesis and characterization, lithographic techniques, and the preparation nanostructured surfaces. This work is, hence, contributing to the grander vision that sees the extraordinary physicochemical properties of nanomaterials united with the wafer-based materials, processing techniques, and electronic devices.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.

非技术摘要：基于电子产业的基础是基于晶圆的加工科学，能够形成具有良好定义属性和界面的不同材料的复杂模式，并共同执行了有用的功能。最大的挑战之一是建立相应的处理科学，该科学将这些基于晶圆的技术与来自金属纳米颗粒衍生的非凡光学，电子和化学性质相结合。然而，设备原型制作无法通过有组织的模式中定义复杂的金属纳米结构来扼杀，在这些模式中，在相邻结构之间以及与基础晶圆材料之间进行相互作用。该项目的旨在通过重新定义定义基于晶片的金属纳米结构所需的方法，仪器和加工科学来克服这种障碍，并在此过程中提供了通过常规方法提供无法访问的功能。研究活动正在与本科教育相结合，其中涉及对工程学院学生提高实验室仪器的研究实习的监督。 Outreach activities place emphasis on the matriculation of women into the engineering profession.Technical Abstract:The research being carried out aims to provide an understanding of the altered chemistry that arises when well-understood seed-mediated noble metal nanostructure growth modes are subjected to four unconventional synthetic levers that become accessible when seeds are immobilized on a rigid crystalline substrate. It is founded on a synthetic strategy that is able to realize periodic arrays of complex noble metal nanostructures through a three stage synthetic scheme that uses (i) a lithography-defined shadow mask to fabricate nanostructured precursors at site-specific locations, (ii) directed assembly to transform them into single crystal templates, and (iii) solution-based chemistry to further transform them into complex nanostructures.在此策略的范围内，有机会将一组新的合成杠杆纳入纳米结构的合成中，从根本上讲，从根本上改变了公认的增长模式。该项目正在推进对四个这样的合成杠杆的使用和理解：（i）一组反应物经过锚定的底物，（ii）合成活性的底物材料，（iii）底物施加的外延和（iv）（iv）刻有光泽的障碍物到生长。研究生正在接受纳米结构合成和表征，光刻技术和制备纳米结构表面的培训。因此，这项工作是有助于更宏伟的愿景，即纳米材料与基于晶体的材料，处理技术和电子设备结合的纳米材料的非凡理论化学特性。该奖项反映了NSF的法定任务，并通过基金会的知识优点和广泛的影响来评估NSF的法定任务，并被认为是值得的支持。

项目成果

期刊论文数量（9）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Highly efficient visible light phenyl modified carbon nitride/TiO2 photocatalyst for environmental applications

DOI：
10.1016/j.apsusc.2020.147394
发表时间：
2020-11-30
期刊：
APPLIED SURFACE SCIENCE
影响因子：
6.7
作者：
Porcu, Stefania;Castellino, Micaela;Ricci, Pier Carlo
通讯作者：
Ricci, Pier Carlo

Substrate-immobilized noble metal nanoplates: a review of their synthesis, assembly, and application

DOI：
10.1039/d1tc01494c
发表时间：
2021
期刊：
Journal of Materials Chemistry C
影响因子：
6.4
作者：
R. D. Neal;R. Hughes;Arin S. Preston;Spencer D. Golze;Trevor B. Demille;S. Neretina
通讯作者：
R. D. Neal;R. Hughes;Arin S. Preston;Spencer D. Golze;Trevor B. Demille;S. Neretina

Catalytic Reduction of 4-Nitrophenol by Gold Catalysts: The Influence of Borohydride Concentration on the Induction Time