Graphene Quantum Material Preparation by Ultrafast Laser Decomposition
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Solution Overview
Problem
Existing methods for preparing graphene materials are inefficient, costly, and lack the ability to precisely control the functional groups and micro-nano structures, limiting their applications and industrial development.
Innovation Solution
A process utilizing ultra-fast laser to resonantly excite the vibration mode of organic molecules in a carbon-containing precursor, breaking chemical bonds and forming graphene quantum materials, combined with microwave heating and laser-induced reduction, to enhance efficiency and control functional groups and structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional methods are used to prepare graphene materials, then the preparation process is simple, but the preparation efficiency is low and costs are high
Solution Approach 1:
The patent replaces conventional mechanical and chemical preparation methods with laser-induced decomposition. The ultra-fast laser directly decomposes carbon-containing precursors to form graphene quantum materials, eliminating the need for complex mechanical exfoliation, chemical vapor deposition, or reduction processes. This substitution of mechanical/chemical systems with optical energy delivery achieves high preparation efficiency while maintaining process simplicity.
Solution Approach 2:
The patent utilizes ultra-fast laser parameters (pulse duration, wavelength, power density) to precisely control the decomposition of carbon precursors. By adjusting laser parameters such as using 515nm wavelength and specific pulse energies, the process achieves efficient graphene formation with minimal equipment complexity, directly converting precursor materials into graphene quantum materials through controlled optical parameter changes.
2Manufacturing precision
If conventional methods are used to prepare graphene materials, then the equipment is simple, but the ability to control functional groups and micro-nano structures is insufficient
Solution Approach 1:
The patent replaces conventional chemical functionalization and physical structuring methods with laser-induced decomposition. The ultra-fast laser directly creates graphene quantum materials with controlled functional groups and micro-nano structures from carbon precursors, achieving precise manufacturing control without complex chemical treatment equipment or multi-step processing apparatus.
Solution Approach 2:
The patent achieves precise control over functional groups and micro-nano structures by adjusting laser parameters including wavelength (e.g., 515nm), pulse duration, and power density. These parameter changes enable selective decomposition of carbon precursors to form specific graphene structures and functional groups, providing manufacturing precision without increasing equipment complexity.
3Productivity
If conventional methods are used to prepare graphene materials, then the process is straightforward, but the cost is high and preparation efficiency is low
Solution Approach 1:
The patent replaces multi-step mechanical and chemical manufacturing processes with a single laser-induced decomposition step. The ultra-fast laser directly converts carbon-containing precursors into graphene quantum materials in one process, dramatically improving preparation efficiency while maintaining ease of manufacture through a straightforward, equipment-light process that requires only laser delivery and precursor material.
4Productivity
If laser-induced decomposition is used to prepare graphene quantum materials, then preparation efficiency is improved, but the process complexity increases
Solution Approach 1:
The patent uses ultra-fast laser-induced decomposition to replace complex multi-step preparation processes. The laser directly decomposes carbon precursors to form graphene quantum materials with controlled structures and functional groups, achieving high preparation efficiency while keeping the process relatively simple through direct optical-to-material conversion without intermediate steps.
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 process significantly improves preparation efficiency, reduces costs by using biomass as a precursor, and enables precise control over the micro-nano structure of graphene, making it suitable for various applications.
Implementation Method 1
utilizing ultra-fast laser to resonantly excite the vibration mode of organic molecules in a carbon-containing precursor material and to enable them to have higher energy to break corresponding chemical bonds therein
Implementation Method 2
decomposing the carbon-containing precursor with ultra-fast laser to obtain the graphene quantum material
Implementation Method 3
optionally subjecting the graphene quantum material to microwave heating
Data Source
AI summary
A process for preparing a graphene quantum material includes: providing a carbon-containing precursor; decomposing the carbon-containing precursor with ultra-fast laser to obtain the graphene quantum material; optionally reducing graphene oxide into graphene with laser; and optionally subjecting the graphene quantum material to microwave heating.