Catalytic Device Voltage-Controlled Charge Transfer
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Solution Overview
Problem
The limited choices of noble metals as catalysts restrict their performance due to the small scale of chemical potential changes through charge transfer, which does not significantly alter their catalytic behavior.
Innovation Solution
A catalytic device comprising a substrate, an electrically insulating layer, and a layer of material with a catalyst, where a voltage is applied across the substrate and the layer to change the charge of the catalyst, reducing the activation energy of chemical reactions and enhancing catalytic performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If charge transfer is used to change the chemical potential of noble metals, then the catalytic behavior is altered, but the change is too small to be significant
Solution Approach 1:
The patent introduces a layer of material between the substrate and the catalyst as an intermediary component. This layer mediates the interaction between the substrate and catalyst, enabling enhanced charge transfer and significant modification of the catalyst's electronic structure and catalytic properties, thereby resolving the limitation of direct charge transfer being too small to be significant
Solution Approach 2:
The patent creates a composite structure consisting of a substrate, a layer of material, and a catalyst. This composite architecture allows for synergistic effects where the layer of material enhances the charge transfer from the substrate to the catalyst, achieving significant changes in catalytic behavior that cannot be obtained by simple charge transfer alone
2Productivity
If voltage is applied across substrate and layer of material, then catalytic performance is enhanced, but device complexity increases
Solution Approach 1:
The layer of material serves multiple functions: it acts as a charge transfer mediator, modifies the electronic structure of the catalyst, and enables electrical control of catalytic activity. This multi-functionality reduces the need for additional components, thereby limiting the increase in device complexity while achieving enhanced catalytic performance
Solution Approach 2:
The patent applies voltage to change the electrical potential and charge distribution in the system, which modifies the electronic structure of the catalyst and enhances its catalytic activity. This parameter change approach allows for dynamic control of catalytic performance without requiring complex structural modifications
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 method effectively lowers the activation energy of catalytic reactions, increasing the reaction rate and improving the catalytic performance of noble metals like gold nanoclusters, making the process more energetically favorable and efficient.
Implementation Method 1
The voltage changes a charge of the catalyst
Implementation Method 2
Catalysts are materials that can change the rate of a chemical reaction without being consumed by the chemical reaction themselves. Catalysts may allow reactions to be carried out in moderate conditions (e.g., lower temperatures and pressures) by involving different transition states or lower activation energies
Data Source
AI summary
This disclosure provides systems, methods, and apparatus related to catalytic devices. In one aspect, a device includes a substrate, an electrically insulating layer disposed on the substrate, a layer of material disposed on the electrically insulating layer, and a catalyst disposed on the layer of material. The substrate comprises an electrically conductive material. The substrate and the layer of material are electrically coupled to one another and configured to have a voltage applied across them.