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RUI: Modulation of cation exchange using oxidation/reduction to design plasmonic nanoheterostructures

RUI：利用氧化/还原调节阳离子交换来设计等离子体纳米异质结构

基本信息

批准号：
2003337
负责人：
Katherine Plass
金额：
$ 27.51万
依托单位：
Franklin and Marshall College
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2020
资助国家：
美国
起止时间：
2020-07-15 至 2024-06-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=2003337&HistoricalAwards=false
关键词：
RUI Modulation cation exchange using

项目摘要

Abstracts for RUI: Modulation of cation exchange using oxidation/reduction to design plasmonic nanoheterostructures DMR-2003337 PART 1: NON-TECHNICAL SUMMARYOne route to create next-generation nanomaterials is by taking single nanoparticles and transforming them into more complex structures. The process starts with one form of nanoparticle and trades out one type of atom for another. This leaves the nanoparticle with the same size and shape it started with, but with additional chemical components. This useful, but not yet fully understood, process is called cation exchange. This project, supported by the Solid State and Materials Chemistry program in the Division of Materials Research, uncovers how one can change the outcome of cation exchange by altering the features of the starting nanoparticle. It is expected that this will affect how much the particle changes in chemistry and where the new components go. It will also change the way the particles absorb light. The insights into how cation exchange works gained through these experiments will allow control over chemistry and structure on the nanoscale. This will eventually make it possible to design and create complex nanodevices that have a broad range of applications that are important to society, particularly in sensing and solar energy conversion. In addition to the benefits that come from directly from the science, training in materials chemistry will be strengthened through undergraduate research and an innovative partnership between laboratories at a primarily undergraduate institution and at an R1 university. Research infrastructure in the Central Pennsylvania region will be supported and barriers to broad participation in chemistry and materials will be reduced. PART 2: TECHNICAL SUMMARYStarting with copper sulfide nanoparticles, designed nanoheterostructures are created through selective introduction of new components through cation exchange. Preliminary data show that iodine oxidation of roxbyite nanoparticles alters the propensity for cation exchange with cadmium and zinc ions as it simultaneously alters the localized surface plasmon resonance of copper sulfide particles. It is proposed that oxidation/reduction processes can be employed as tools to modulate chemical and spatial selectivity of partial cation exchange. This project, supported by the Solid State and Materials Chemistry program within the Division of Materials Research, seeks to reveal structure-property relationships affected by the alteration of copper sulfide nanoparticles through redox processes and to utilize these relationships to design novel plasmonic nanoheterostructures. The project examines various means of oxidation and reduction and elucidates the effects on structure, Cu-ion vacancy concentration, plasmonic behavior, and propensity for cation exchange in copper sulfide nanoparticles. The fundamental insights uncovered by the proposed work will advance our ability to control chemistry and structure on the nanoscale. The particles investigated have the potential to act as catalysts, solar energy absorbers in PV or solar water evaporation, NIR absorbers in photothermal cancer treatment, or sensors. Training in materials chemistry will be strengthened through undergraduate research with close student-faculty interaction and an innovative partnership between laboratories at a primarily undergraduate institution and at an R1 university. Research infrastructure in the Central Pennsylvania region will be supported and barriers to broad participation in chemistry and materials research will be reduced.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.

RUI摘要：使用氧化/还原调节阳离子交换以设计等离子体纳米异质结构DMR-2003337第1部分：创造下一代纳米材料的一种途径是将单个纳米颗粒转化为更复杂的结构。这个过程从一种形式的纳米粒子开始，用一种原子交换另一种原子。这使得纳米颗粒具有相同的大小和形状，但具有额外的化学成分。这个有用但尚未完全理解的过程称为阳离子交换。该项目由材料研究部的固态和材料化学项目支持，揭示了如何通过改变起始纳米颗粒的特征来改变阳离子交换的结果。预计这将影响颗粒在化学上的变化程度以及新成分的去向。它还将改变粒子吸收光的方式。通过这些实验获得的阳离子交换如何工作的见解将允许控制纳米尺度上的化学和结构。这最终将使设计和制造复杂的纳米器件成为可能，这些纳米器件具有广泛的社会应用，特别是在传感和太阳能转换方面。除了直接来自科学的好处外，材料化学的培训将通过本科研究和主要本科机构和R1大学实验室之间的创新伙伴关系得到加强。宾夕法尼亚州中部地区的研究基础设施将得到支持，广泛参与化学和材料的障碍将减少。第二部分：技术概述从硫化铜纳米颗粒开始，通过阳离子交换选择性引入新组分来创建设计的纳米异质结构。初步数据表明，碘氧化的roxbyite纳米粒子改变了与镉和锌离子的阳离子交换的倾向，因为它同时改变了硫化铜颗粒的局部表面等离子体共振。有人提出，氧化/还原过程可以作为工具，以调节部分阳离子交换的化学和空间选择性。该项目由材料研究部内的固态和材料化学项目支持，旨在揭示通过氧化还原过程改变硫化铜纳米颗粒影响的结构-性质关系，并利用这些关系设计新型等离子体纳米异质结构。该项目研究了氧化和还原的各种手段，并阐明了对硫化铜纳米颗粒的结构，铜离子空位浓度，等离子体行为和阳离子交换倾向的影响。这项工作所揭示的基本见解将提高我们在纳米尺度上控制化学和结构的能力。研究的颗粒有可能作为催化剂，太阳能吸收剂在光伏或太阳能水蒸发，近红外吸收剂在光热癌症治疗，或传感器。材料化学的培训将通过本科生研究加强，密切的师生互动和主要本科院校和R1大学实验室之间的创新伙伴关系。该奖项反映了NSF的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

期刊论文数量（3）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Heterostructures of Cu 2−x S/Cu 2−x Te plasmonic semiconductors: disappearing and reappearing LSPR with anion exchange

Cu 2–x S/Cu 2–x Te 等离子体半导体的异质结构：阴离子交换下局域表面等离子体共振的消失与再现

DOI：
10.1039/d2cc01859d
发表时间：
2022
期刊：
Chemical Communications
影响因子：
4.9
作者：
Espinosa, Alba Roselia;Novak, Marc;Luo, Qi;Hole, Brandon;Doligon, Clarisse;Prenza Sosa, Kenya;Gray, Jennifer L.;Rossi, Daniel P.;Plass, Katherine E.
通讯作者：
Plass, Katherine E.

Synthetic Strategies, Thermal Stability, and Optical Properties for Nanostructured Famatinite with Cu-Site Doping