Exploiting Plasmonic and Plexcitonic Nanomaterials in Industrial Catalysis
在工业催化中利用等离子和有机纳米材料
基本信息
- 批准号:RGPIN-2020-04620
- 负责人:
- 金额:$ 3.5万
- 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:2020
- 资助国家:加拿大
- 起止时间:2020-01-01 至 2021-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Could energy intensive chemical reactions such as CO2 reduction and steam reforming be performed close to room temperature using light as the energy source? Could the hydrogen economy be realized within the next 5-10 years through efficient sunlight-driven water-splitting ? How do quantum quasiparticles such as excitons, plasmons and phonons interact in the context of heterogeneous catalysis? Could we reduce civilization's extraordinary reliance on precious metals such as platinum, palladium, gold and silver for a range of catalytic reactions? These are the sorts of scientific questions and technological possibilities that the research program described in this proposal seeks to examine and answer. At the heart of this research are plasmonic nanoparticles, and their heterojunctions with semiconductors and pi-conjugated dye molecules.
Plasmons are collective and coherent oscillations of the free electron gas in metals. In metal nanoparticles, the spatial confinement of collective excitations of electrons at the metal-dielectric interface result in strong localized surface plasmon resonances (LSPR). LSPR resonances at visible & near-infrared wavelengths are desired for photocatalytic applications. Nanoparticles of a handful of materials such as Ag, Au, Cu, Al, TiN, ZrN and Cu2S have been shown to have LSPR peaks in the visible and near-infrared. Surface plasmons decay in femtoseconds through either Landau damping (LD) or chemical interface damping (CID) to form hot electron-hole pairs with energies much higher than what would be expected from a Boltzmann distribution. Therefore, hot carriers are particularly attractive as agents of chemical transformation in order to drive chemical reactions such as water-splitting to generate H2, reduction of CO2 into value-added products, synthesis of azo dyes, ammonia synthesis, hydrocarbon reforming, photooxidation of organic compounds, etc. However, hot electrons experience electron-electron scattering over ~ 100 fs timescales and collisions with phonons over ~ 1 ps timescales resulting in very fast relaxation to a purely thermal carrier distribution. The key technological challenge that this proposal seeks to address is to how to shuttle the hot electrons away from the metal and get them to drive a chemical reaction before their excess energies are lost to a variety of dissipation processes.
Heterojunctions of plasmonic metal nanoparticles (nanoprisms, nanocubes, nanoshells, etc) with inorganic semiconductors and pi-conjugated organic dyes, offer the most promising routes for efficient separation and exploitation of plasmonic hot carriers. The underlying physical processes at these heterojunctions are not completely understood. We also seek to advance our fundamental scientific understanding of plasmonic metal-semiconductor heterojunctions. The research in this proposal has the potential to impact the $5 billion semiconductor photocatalysis industry and the $30 billion global catalyst industry (2018).
能源密集型的化学反应,如二氧化碳还原和蒸汽重整,能否在接近室温的条件下使用光作为能源?能否在未来5-10年内通过高效的阳光驱动的水分解实现氢经济?量子准粒子如激子、等离激子和声子在非均相催化下是如何相互作用的?在一系列催化反应中,我们能否减少人类文明对铂、钯、金、银等贵金属的过度依赖?这些都是本提案中描述的研究计划试图研究和回答的科学问题和技术可能性。这项研究的核心是等离子体纳米粒子,以及它们与半导体和π共轭染料分子的异质结。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Shankar, Karthik其他文献
Enhanced charge separation in g-C(3)N(4)-BiOI heterostructures for visible light driven photoelectrochemical water splitting.
- DOI:
10.1039/c8na00264a - 发表时间:
2019-04-09 - 期刊:
- 影响因子:4.7
- 作者:
Alam, Kazi M.;Kumar, Pawan;Kar, Piyush;Thakur, Ujwal K.;Zeng, Sheng;Cui, Kai;Shankar, Karthik - 通讯作者:
Shankar, Karthik
Zinc phthalocyanine conjugated cellulose nanocrystals for memory device applications
- DOI:
10.1088/1361-6528/ac2e78 - 发表时间:
2022-01-29 - 期刊:
- 影响因子:3.5
- 作者:
Chaulagain, Narendra;Alam, Kazi M.;Shankar, Karthik - 通讯作者:
Shankar, Karthik
Mapping the surface potential, charge density and adhesion of cellulose nanocrystals using advanced scanning probe microscopy
- DOI:
10.1016/j.carbpol.2020.116393 - 发表时间:
2020-10-15 - 期刊:
- 影响因子:11.2
- 作者:
Goswami, Ankur;Alam, Kazi M.;Shankar, Karthik - 通讯作者:
Shankar, Karthik
Transparent Anodic TiO2 Nanotube Arrays on Plastic Substrates for Disposable Biosensors and Flexible Electronics
- DOI:
10.1166/jnn.2013.7409 - 发表时间:
2013-04-01 - 期刊:
- 影响因子:0
- 作者:
Farsinezhad, Samira;Mohammadpour, Arash;Shankar, Karthik - 通讯作者:
Shankar, Karthik
Heterojunctions of halogen-doped carbon nitride nanosheets and BiOI for sunlight-driven water-splitting
- DOI:
10.1088/1361-6528/ab4e2c - 发表时间:
2020-02-14 - 期刊:
- 影响因子:3.5
- 作者:
Alam, Kazi M.;Kumar, Pawan;Shankar, Karthik - 通讯作者:
Shankar, Karthik
Shankar, Karthik的其他文献
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{{ truncateString('Shankar, Karthik', 18)}}的其他基金
Exploiting Plasmonic and Plexcitonic Nanomaterials in Industrial Catalysis
在工业催化中利用等离子和有机纳米材料
- 批准号:
RGPIN-2020-04620 - 财政年份:2022
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
Exploiting Plasmonic and Plexcitonic Nanomaterials in Industrial Catalysis
在工业催化中利用等离子和有机纳米材料
- 批准号:
RGPIN-2020-04620 - 财政年份:2021
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
Advanced resonator - and imaging-based characterization of morphology and aggregation in CNCs and CFs
CNC 和 CF 中基于先进谐振器和成像的形态和聚集表征
- 批准号:
492027-2015 - 财政年份:2019
- 资助金额:
$ 3.5万 - 项目类别:
Collaborative Research and Development Grants
Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them
溶液生长的纳米线和纳米管阵列,以及包含它们的有序混合纳米结构
- 批准号:
RGPIN-2015-06630 - 财政年份:2019
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them
溶液生长的纳米线和纳米管阵列,以及包含它们的有序混合纳米结构
- 批准号:
RGPIN-2015-06630 - 财政年份:2018
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
Advanced resonator - and imaging-based characterization of morphology and aggregation in CNCs and CFs
CNC 和 CF 中基于先进谐振器和成像的形态和聚集表征
- 批准号:
492027-2015 - 财政年份:2018
- 资助金额:
$ 3.5万 - 项目类别:
Collaborative Research and Development Grants
Nanostructured ceramic coatings engineered for reduction of corrosion, erosion, fouling and viscous drag in industrial pipes and tubes
纳米结构陶瓷涂层旨在减少工业管道中的腐蚀、侵蚀、结垢和粘性阻力
- 批准号:
478987-2015 - 财政年份:2017
- 资助金额:
$ 3.5万 - 项目类别:
Strategic Projects - Group
Advanced resonator - and imaging-based characterization of morphology and aggregation in CNCs and CFs
CNC 和 CF 中基于先进谐振器和成像的形态和聚集表征
- 批准号:
492027-2015 - 财政年份:2017
- 资助金额:
$ 3.5万 - 项目类别:
Collaborative Research and Development Grants
Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them
溶液生长的纳米线和纳米管阵列,以及包含它们的有序混合纳米结构
- 批准号:
RGPIN-2015-06630 - 财政年份:2017
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
Solution-grown Nanowire and Nanotube Arrays, and Ordered Hybrid Nanoarchitectures incorporating them
溶液生长的纳米线和纳米管阵列,以及包含它们的有序混合纳米结构
- 批准号:
RGPIN-2015-06630 - 财政年份:2016
- 资助金额:
$ 3.5万 - 项目类别:
Discovery Grants Program - Individual
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