Plasmonic Nanoparticle Catalysts for Long-Chain Hydrocarbon Production
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Solution Overview
Problem
Current technologies for converting solar energy into usable forms of energy are inefficient, primarily producing short-chain hydrocarbons with solar-to-chemical efficiencies significantly lower than natural photosynthesis, which typically ranges from 1-7%.
Innovation Solution
A plasmonic nanoparticle catalyst comprising a plasmonic provider and a catalytic property provider, in contact or within 200 nm of each other, is used to produce long-chain hydrocarbon molecules through light irradiation, utilizing CO or CO2 from industrial flue gas or atmosphere, with solar-to-chemical efficiency exceeding 10% at temperatures between 20° C. to 800° C.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional solar energy conversion technologies are used, then short-chain hydrocarbons are produced, but solar-to-chemical efficiency is extremely low (1-2 orders of magnitude lower than natural photosynthesis)
Solution Approach 1:
The patent employs a composite catalyst system comprising plasmonic nanoparticles (Au, Ag, or Cu) combined with transition metal compounds (Co, Fe, Ni, Cu, or their oxides/carbides/nitrides). This composite structure enables both plasmonic resonance for light absorption and catalytic activity for C-C bond formation, achieving high solar-to-chemical efficiency (exceeding 10%) while producing long-chain hydrocarbons (C5+), thereby resolving the contradiction between efficiency and product quality.
Solution Approach 2:
The patent utilizes plasmonic resonance parameters of noble metal nanoparticles to enhance light absorption in the visible spectrum. By adjusting nanoparticle size, shape, and composition, the plasmonic resonance frequency is tuned to maximize solar energy capture, directly improving solar-to-chemical efficiency while enabling long-chain hydrocarbon production through enhanced electron-hole pair generation and thermal effects.
2Quantity of substance
If conventional catalysts are used, then short-chain hydrocarbons (C1-C2) are produced, but long-chain hydrocarbon production is insufficient
Solution Approach 1:
The patent creates distinct functional zones within the composite catalyst: plasmonic nanoparticles serve as light absorption centers generating hot electrons and heat, while transition metal compound sites provide catalytic active centers for CO2 reduction and C-C coupling. This spatial separation of functions enables simultaneous optimization of light harvesting efficiency and long-chain hydrocarbon formation, achieving both high efficiency and extended hydrocarbon chains.
Solution Approach 2:
The patent replaces conventional thermal catalysis or biological photosynthesis with a plasmonically-driven catalytic system. The plasmonic nanoparticles convert light energy directly into thermal energy and chemical energy through hot electron injection, substituting the need for complex biological systems or high-temperature thermal processes, thereby achieving efficient long-chain hydrocarbon production at moderate temperatures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The catalyst achieves a quantum leap in solar-to-chemical efficiency, producing long-chain hydrocarbon molecules with efficiencies up to 20%, surpassing previous efficiencies by converting CO2 and water into various hydrocarbon molecules using sunlight as the sole energy input.
Implementation Method 1
plasmonic nanoparticle catalyst for producing hydrocarbon molecules by light irradiation
Implementation Method 2
demonstrated a novel artificial photosynthesis technology which provided a unique catalyst and method for producing long-chain hydrocarbon molecules
Implementation Method 3
contacting a plasmonic nanoparticle catalyst with at least one carbon-containing source and at least one hydrogen-containing source; and irradiating the plasmonic nanoparticle catalyst, the carbon-containing source and the hydrogen-containing source with light to produce hydrocarbon molecules
Data Source
AI summary
A plasmonic nanoparticle catalyst for producing hydrocarbon molecules by light irradiation, which comprises at least one plasmonic provider and at least one catalytic property provider, wherein the plasmonic provider and the catalytic property provider are in contact with each other or have distance less than 200 nm, and molecular composition of the hydrocarbon molecules produced by light irradiation is temperature-dependent. And a method for producing hydrocarbon molecules by light irradiation utilizing the plasmonic nanoparticle catalyst.