Related Experiment Video
Updated: Jun 4, 2026
14:52
Fabrication of Three-Dimensional Graphene-Based Polyhedrons via Origami-Like Self-Folding
Published on: September 23, 2018
Photocatalytic patterning and modification of graphene
Liming Zhang1, Shuo Diao, Yufeng Nie
1Centre for Nanochemistry, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry & Molecular Engineering, Peking University, Beijing, People's Republic of China.
Journal of the American Chemical Society
|February 5, 2011
Summary
Titanium dioxide (TiO(2)) photocatalysis engineers graphene using a photomask. This green method enables precise graphene patterning, thinning, and conversion for fabricating novel graphene-based electronic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Photochemistry
Background:
- Titanium dioxide (TiO(2)) photocatalysis is a green technology for degrading organic pollutants.
- Graphene engineering is crucial for advanced electronic applications.
Purpose of the Study:
- To demonstrate the application of TiO(2) photocatalysis for precise graphene engineering.
- To develop a versatile method for fabricating graphene-based devices.
Main Methods:
- Utilized a patterned TiO(2) photomask for selective photocatalytic reactions on graphene.
- Employed UV-visible spectroscopy to analyze the process and reactive species.
- Fabricated an all-carbon field-effect transistor (FET) array as a demonstration.
Main Results:
- Achieved precise graphene modifications including ribbon cutting, arbitrary patterning, layer-by-layer thinning, and localized conversion to graphene oxide.
- Identified highly reactive hydroxyl (·OH) radicals as key agents for chemical scissors-like modification.
- Demonstrated the fabrication of functional graphene-based devices, such as FET arrays.
Conclusions:
- Photocatalytic patterning with TiO(2) offers a solution-free, cost-effective, and scalable technique for graphene engineering.
- This method is compatible with microelectronic fabrication and enables versatile design of graphene-based circuits and devices.
