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In this paper, we present a reliable and position-controllable method to remove the polymer residues on graphene films by laser exposure.
High boiling point solvents widely used to exfoliate graphene are toxic and viewed difficult to remove, but were readily removed by simple dialysis.
Benefiting from the use of ethanol and water, it can be easy to prepare transparent and conductive graphene films by vacuum filtering or spray method, and does not need special post-treatment to remove the impurity, which could be beneficial for potential applications in electronic, optic and energy areas.
Herein, we demonstrate novel spray-drying strategy for the facile and scalable assembly of graphene into a compact microspherical powder via surface modification using cyanamide, which plays very important roles in the assembly process: preventing graphene oxide from interacting with water and restacking, polymerization into graphitic carbon nitride, and its thermal decomposition.
Individual graphene flakes can be deposited onto mica by spray coating, allowing statistical analysis of flake size and thickness.
Our technique for preparing stable and low viscosity aqueous graphene dispersions combined with a spray coating method can produce conductive graphene films with uniform distribution, large area, and controllable thickness at low cost.
We demonstrate three different techniques (dialysis, vacuum filtration, and spray drying) for removal of dispersants from liquid-exfoliated graphene.
This research demonstrates that graphene-based composite materials could be used to remove pesticide residues in aqueous environments.
We demonstrate spray coating of graphene ink as a viable method for large-area fabrication of graphene-based dye-sensitized solar cell (DSSC) modules.
Proceedings ArticleDOI
Fubo Rao, Wen Li, Lixin Dong 
01 Aug 2011
6 Citations
With the optimum parameters, our so-called “one layer etching” process can be used to remove one single graphene layer at a time.

Related Questions

How to remove Graphene oxide from human body?5 answersGraphene oxide can be removed from the human body through various methods. One method involves using ultraviolet light with a specific wavelength in a particular environment to process a graphene thin film and remove the graphene in a specified region. Another method is the use of graphene oxide as a nano-adsorbent/removal material for the remediation of water contaminated with hazardous molecules. Additionally, the complex interactions of graphene oxide with human blood components can complicate its removal from the body. Graphene oxide's bi-dimensional nature can lead to unique interactions with blood proteins and biological membranes, potentially causing thrombogenicity and immune cell activation. Further research is needed to understand the interactions of graphene oxide with the human body and develop effective methods for its removal.
How to remove graphene oxide from human body?5 answersGraphene oxide can be removed from the human body through various methods. One approach is to use an organic solvent for purification, which allows for simple and efficient removal of highly purified graphene oxide. Another method involves the use of graphene oxide as a wound dressing, where the antibacterial properties of graphene prevent bacterial growth and promote healing. However, it is important to consider the potential interactions and effects of graphene oxide on human blood components. Graphene oxide's bi-dimensional nature can lead to unique interactions with blood proteins and biological membranes, potentially causing thrombogenicity and immune cell activation. Therefore, further research is needed to understand the complex interactions between graphene oxide and the human body, particularly in the context of drug delivery technology.
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