Carbon-Supported Functionalized Silver Nanoparticles for Uniform Growth
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Solution Overview
Problem
Existing methods for producing carbon-supported silver nanoparticles result in large particle sizes, uneven distribution, and long processing times, limiting their effectiveness as electro-catalysts for CO2 conversion due to reduced surface area and stability issues.
Innovation Solution
The development of in-situ methods for preparing carbon-supported surface functionalized silver nanoparticles, which involve mixing silver nanoparticles with a carbon structure and nitrogen-containing moieties in a liquid medium to control particle size and distribution, resulting in uniform and stable nanoparticles with improved catalytic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional methods are used to produce carbon-supported silver nanoparticles, then production is achieved, but particle sizes become large and distribution becomes uneven
Solution Approach 1:
The patent applies preliminary action by pre-functionalizing the carbon support surface with nitrogen-containing groups before introducing silver ions. This surface preparation creates predetermined binding sites that control subsequent nanoparticle formation, ensuring uniform size and distribution from the outset rather than allowing uncontrolled growth
Solution Approach 2:
The patent utilizes parameter changes by controlling the oxidation state of the carbon support (creating N-doped structures) and adjusting the reduction conditions. These parameter modifications enable precise control over nanoparticle size, achieving consistent 6-8 nm particles with high surface area while maintaining even distribution
2Productivity
If conventional methods are used to produce carbon-supported silver nanoparticles, then production is achieved, but processing time becomes long
Solution Approach 1:
The patent performs preliminary surface functionalization of carbon supports with nitrogen-containing groups before nanoparticle synthesis. This pre-prepared surface enables faster and more reliable nanoparticle formation with consistent results, reducing both processing time and variability in stability outcomes
Solution Approach 2:
The nitrogen-functionalized carbon support acts as both the substrate and the directing agent for nanoparticle formation. The surface groups automatically coordinate silver ions and control reduction, eliminating the need for additional complex stabilizing agents and simplifying the overall process while improving reliability
3Area of stationary object
If conventional methods are used to produce carbon-supported silver nanoparticles, then production is achieved, but surface coverage becomes insufficient
Solution Approach 1:
The patent applies local quality by creating nitrogen-functionalized sites at specific locations on the carbon support surface. These localized functional groups serve as predetermined anchoring points that ensure uniform distribution of silver nanoparticles across the entire surface, maximizing surface coverage while maintaining even spacing
Solution Approach 2:
The patent modifies the surface chemistry parameters of the carbon support by introducing nitrogen-containing functional groups. This chemical parameter change creates high-affinity binding sites that promote complete and uniform surface coverage with consistently sized particles, achieving both high area utilization and precise distribution
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 in-situ methods produce nanoparticles with consistent sizes between 6-8 nm, ensuring even distribution and high surface coverage, enhancing electro-catalytic efficiency and stability for CO2 conversion systems.
Implementation Method 1
adding a carbon structure with the liquid-containing composition to form the carbon supported silver nanoparticles in-situ
Implementation Method 2
mixing a composition comprising a carbon structure, a plurality of silver nanoparticles, and a liquid to grow silver nanoparticles on the carbon structure in-situ
Implementation Method 3
carbon supported surface functionalized silver nanoparticles
Data Source
AI summary
Carbon supported surface functionalized silver nanoparticles and a method for preparing the same are disclosed. For example, a composition includes carbon supported surface functionalized silver nanoparticles, The methods include preparing a liquid-containing composition comprising a plurality of silver nanoparticles and adding a carbon structure with the liquid-containing composition to form the carbon supported silver nanoparticles in-situ or mixing a composition comprising a carbon structure, a plurality of silver nanoparticles, and a liquid to grow silver nanoparticles on the carbon structure in-situ.