The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
基本信息
- 批准号:RGPIN-2014-03995
- 负责人:
- 金额:$ 5.25万
- 依托单位:
- 依托单位国家:加拿大
- 项目类别:Discovery Grants Program - Individual
- 财政年份:2014
- 资助国家:加拿大
- 起止时间:2014-01-01 至 2015-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
SUMMARY OF PROPOSAL Metallic nanomaterials come in various forms. Many researchers are studying nanoparticles, which are critical to catalysis of chemical and electrochemical reactions, for example in fuel cells. Our group in Toronto specializes in another category : nanoporous metals. Historically these have been made in various ways, but the dominant approach nowadays involves dealloying – the selective electrolytic dissolution of one or less-noble alloying elements from a metallic alloy. The remaining, more-noble atoms rearrange to form the nanoporous structure. Usually some less-noble element(s) are trapped within this structure and may alter its properties – for example, its catalytic activity. The porosity is almost entirely continuous, not a Swiss cheese structure, so reactants and products can freely enter and leave the pores. Recently we carried out a substantial study of the nanoporous alloys created by dealloying of ternary silver-gold-platinum alloys, with small contents of platinum : 1, 2 or 3 atomic percent. The presence of platinum refines the porosity of the product, to a few nanometres, and stabilizes it against growth of the pores when heated. The most exciting result was that heating in air greatly increased the amount of platinum on the internal surface of the porous structure, while heating in vacuum had the opposite effect. This ability to tune the surface coverage of platinum (and, by extension, other desirable elements in future alloys) creates a very flexible system for many future activities - and not only catalysis. The proposed activities include, but are not restricted to, the following : • High resolution analytical transmission electron microscopy of the nanoporous structures, to better understand the distribution of alloying elements and the effect of heating. • Studies of electrocatalysis of various reactions such as oxidation of alcohols (preliminary results are extremely promising). • Studies of gas-phase catalysis in suitable systems. • Investigation of the structure and properties of nanoporous metals synthesized using unusual conditions such as high-temperature, high-pressure aqueous solutions. • Manufacture and testing of analogous alloys with much lower contents of noble metal, using the concepts developed for the silver-gold-platinum system. • Improvement of presently available atomistic computer simulation codes for dealloying, and correlation with experimental behaviour. • Use of nanoporous metals as testbeds for studying electrochemical behaviour in highly confined spaces, with potential practical applications such as tunable separation of substances.
金属纳米材料有多种形式。许多研究人员正在研究纳米粒子,它们对化学和电化学反应的催化至关重要,例如在燃料电池中。我们在多伦多的团队专门研究另一类:纳米多孔金属。从历史上看,制造这些合金的方法多种多样,但现在主要的方法是脱合金,即选择性地电解溶解金属合金中的一种或几种贵重合金元素。剩下的更贵重的原子重新排列形成纳米孔结构。通常一些不太贵重的元素被困在这个结构中,并可能改变它的性质,例如,它的催化活性。孔隙几乎完全是连续的,而不是瑞士奶酪结构,因此反应物和产物可以自由进出孔隙。最近,我们进行了一项大量的研究,通过对银-金-铂三元合金进行脱合金化制备纳米多孔合金,其中铂的含量很少:1、2或3个原子百分比。铂的存在将产品的孔隙度细化到几纳米,并在加热时稳定毛孔的生长。最令人兴奋的结果是,在空气中加热会大大增加多孔结构内表面铂的含量,而在真空中加热则会产生相反的效果。这种调整铂(以及未来合金中其他理想元素)表面覆盖的能力,为许多未来的活动创造了一个非常灵活的系统,而不仅仅是催化。建议的活动包括但不限于:•纳米孔结构的高分辨率分析透射电子显微镜,以更好地了解合金元素的分布和加热的影响。•各种反应的电催化研究,如醇的氧化(初步结果非常有希望)。•在合适的系统中研究气相催化。•研究在高温高压水溶液等特殊条件下合成的纳米多孔金属的结构和性能。•使用为银-金-铂系统开发的概念,制造和测试贵金属含量低得多的类似合金。•改进目前可用的原子计算机模拟代码,用于合金化,以及与实验行为的相关性。•使用纳米多孔金属作为实验平台,研究高度受限空间中的电化学行为,具有潜在的实际应用,如可调物质分离。
项目成果
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Newman, Roger其他文献
A Non-Randomized Trial of In-Person Versus Text/Telephone Screening, Brief Intervention and Referral to Treatment for Pregnant and Postpartum Women.
- DOI:
10.1176/appi.prcp.20210027 - 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
Guille, Constance;Maldonado, Lizmarie;Simpson, Annie N;Newman, Roger;King, Courtney;Cortese, Bernadette;Quigley, Erin;Dietrich, Nicole;Kerr, Anna;Aujla, Rubin;King, Kathryn;Ford, Dee;Brady, Kathleen T - 通讯作者:
Brady, Kathleen T
Women receiving 17-α-hydroxyprogesterone caproate hospitalized for preterm labor at less than 34 weeks benefit from daily perinatal nursing surveillance
- DOI:
10.1016/j.ajog.2008.06.070 - 发表时间:
2008-10-01 - 期刊:
- 影响因子:9.8
- 作者:
Rittenberg, Charles;Sullivan, Scott;Newman, Roger - 通讯作者:
Newman, Roger
Central Executive and Default Mode Network Intranet work Functional Connectivity Patterns in Chronic Migraine.
- DOI:
10.4172/2329-6895.1000393 - 发表时间:
2018-01-01 - 期刊:
- 影响因子:0
- 作者:
Androulakis, X Michelle;Krebs, Kaitlin A;Newman, Roger - 通讯作者:
Newman, Roger
Listening to women and pregnant and postpartum people: Qualitative research to inform opioid use disorder treatment for pregnant and postpartum people.
- DOI:
10.1016/j.dadr.2022.100064 - 发表时间:
2022-06 - 期刊:
- 影响因子:0
- 作者:
Guille, Constance;Hall, Casey;King, Courtney;Sujan, Ayesha;Brady, Kathleen;Newman, Roger - 通讯作者:
Newman, Roger
Maternal Epidural Steroids to Prevent Neonatal Exposure to Hyperthermia and Inflammation
- DOI:
10.1055/s-0038-1675329 - 发表时间:
2019-07-01 - 期刊:
- 影响因子:2
- 作者:
Goodier, Christopher;Newman, Roger;Goetz, Laura - 通讯作者:
Goetz, Laura
Newman, Roger的其他文献
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{{ truncateString('Newman, Roger', 18)}}的其他基金
Advancing the science and potential applications of nanoporous metals
推进纳米多孔金属的科学和潜在应用
- 批准号:
RGPIN-2019-06644 - 财政年份:2022
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
Advancing the science and potential applications of nanoporous metals
推进纳米多孔金属的科学和潜在应用
- 批准号:
RGPIN-2019-06644 - 财政年份:2021
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
Advancing the science and potential applications of nanoporous metals
推进纳米多孔金属的科学和潜在应用
- 批准号:
RGPIN-2019-06644 - 财政年份:2020
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
Advancing the science and potential applications of nanoporous metals
推进纳米多孔金属的科学和潜在应用
- 批准号:
RGPIN-2019-06644 - 财政年份:2019
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2018
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
NSERC/UNENE Industrial Research Chair in Corrosion control and materials performance in nuclear power systems
NSERC/UNENE 核电系统腐蚀控制和材料性能工业研究主席
- 批准号:
311642-2013 - 财政年份:2018
- 资助金额:
$ 5.25万 - 项目类别:
Industrial Research Chairs
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2017
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
NSERC/UNENE Industrial Research Chair in Corrosion control and materials performance in nuclear power systems
NSERC/UNENE 核电系统腐蚀控制和材料性能工业研究主席
- 批准号:
311642-2013 - 财政年份:2017
- 资助金额:
$ 5.25万 - 项目类别:
Industrial Research Chairs
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2016
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
462039-2014 - 财政年份:2016
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
相似海外基金
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2018
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2017
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
In-situ observation technique of Schottky barriers around interface between metallic electrode and semiconductor
金属电极与半导体界面肖特基势垒原位观测技术
- 批准号:
17K06782 - 财政年份:2017
- 资助金额:
$ 5.25万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2016
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
462039-2014 - 财政年份:2016
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
462039-2014 - 财政年份:2015
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
RGPIN-2014-03995 - 财政年份:2015
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Individual
The Interface Between Metallic Corrosion and Nanoscience
金属腐蚀与纳米科学之间的接口
- 批准号:
462039-2014 - 财政年份:2014
- 资助金额:
$ 5.25万 - 项目类别:
Discovery Grants Program - Accelerator Supplements
The study on the correlation between characteristics of soft metallic layer in frictional interface and the tribological properties of soft-metal/DLC nano-composite coatings
摩擦界面软金属层特性与软金属/DLC纳米复合涂层摩擦学性能相关性研究
- 批准号:
26420093 - 财政年份:2014
- 资助金额:
$ 5.25万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Interface structures and bonding strength between metallic glass thin films and substrates towards MEMS applications.
面向 MEMS 应用的金属玻璃薄膜和基板之间的界面结构和结合强度。
- 批准号:
22760552 - 财政年份:2010
- 资助金额:
$ 5.25万 - 项目类别:
Grant-in-Aid for Young Scientists (B)