石墨烯專家


氧化石墨烯
Graphene Oxide

氧化石墨烯︰膜 Graphene Oxide︰Films
Graphene Oxide Paper, 氧化石墨烯紙
The Graphene Oxide Thin Film on Glass, 玻璃基氧化石墨烯薄膜
The Reduced Graphene Oxide Thin Film on Glass, 玻璃基還原氧化石墨烯薄膜

氧化石墨烯︰粉末 Graphene Oxide︰ Powders/Flakes
Single Layer Graphene Oxide, 單層氧化石墨烯
High Porosity Reduced Graphene Oxide, 多孔性還原氧化石墨烯
High Surface Area Reduced Graphene Oxide, 高表面積還原氧化石墨烯
Single Layer Graphene Oxide (Small Flakes), 單層氧化石墨烯

氧化石墨烯︰溶液 Graphene Oxide︰ Solutions
Dispersion in Water: Single Layer Graphene Oxide, 單層氧化石墨烯水溶液
Highly Concentrated Graphene Oxide, 高濃縮氧化石墨烯
Ultra Highly Concentrated Single-Layer Graphene Oxide, 超高濃縮單層氧化石墨烯

 

氧化石墨烯︰膜 Graphene Oxide︰ Films
Graphene Oxide Paper
氧化石墨烯紙
Diameter: 4.0 cm 氧化石墨烯紙 Parameters︰
Diameter: 4.0cm
Thickness: 10 microns
Non-conductive
Tensile modulus> 20 GPa
Color: Black
Bends easily

圖片
The Graphene Oxide Thin Film on Glass
玻璃基氧化石墨烯薄膜
Diameter: 5.08 cm 玻璃基氧化石墨烯薄膜 Specifications:
Diameter of Graphene Oxide Film: 35 mm
Thickness: 175 nm
Deposited on a round slide: D=5.08 cm, thickness=1 mm

透過率曲線
The Reduced Graphene Oxide Thin Film on Glass
玻璃基還原氧化石墨烯薄膜
Diameter: 35 mm 玻璃基還原氧化石墨烯薄膜 Specifications:
Diameter of Reduced Graphene Oxide Film: 35 mm
Thickness: 175 nm
Deposited on a round slide: D=50.8 cm, thickness=1 mm
Sheet resistance: about 105 Ohm/[]
 
氧化石墨烯︰粉末 Graphene Oxide︰ Powders/Flakes
Single Layer Graphene Oxide
單層氧化石墨烯
0.5 g 單層氧化石墨烯 Dry powder

Color:Brown
Composition: Carbon (79%), Oxygen (20%)
Flake size: 0.5-5 microns.
Thickness: 1 atomic layer - at least 80%.

Our GO powders have improved dispersibility in various solvents. An aqueous solution may be prepared by mixing GO powder in water then sonicating the dispersion for an additional hour. Graphene oxide layers are about 1.1 ± 0.2 nm thick.

拉曼光譜圖 / AFM圖像 / SEM圖像
1 g 單層氧化石墨烯
High Porosity Reduced Graphene Oxide
多孔性還原氧化石墨烯
0.25 g 多孔性還原氧化石墨烯 Dry black powder

Specifications:
Specific surface area-about 400 m2/g
Color: Black
Solid content: 98%
Average flake thickness:1 monolayer
Average Particle (lateral) size: ~3-10 microns.
Flakes have multiple openings and holes
Improved solubility in organic solvents

拉曼光譜圖 / SEM圖像1 / SEM圖像2
0.5 g 多孔性還原氧化石墨烯
High Surface Area Reduced Graphene Oxide
高表面積還原氧化石墨烯
75 mg 高表面積還原氧化石墨烯 Dry black powder

Specifications:
Specific surface area-833 m2/g
Color: Black
Solid content: 98%
Carbon/Oxygen Ratio 10.5
Average flake thickness:1 monolayer
Average Particle (lateral) size: ~3-5 microns.

SEM圖像1 / SEM圖像2 / SEM圖像3
Single Layer Graphene Oxide (Small Flakes)
單層氧化石墨烯
1 g 單層氧化石墨烯 Dry paper-like powder

Color: Brown
Composition: Carbon (79%), Oxygen (20%)
Flake size: 0.3-0.7 microns.
Thickness: 1 atomic layer - about 50%.

Graphene oxide disperses readily in water and other solvents, breaking up into macroscopic flakes, mostly one layer thick. Graphene oxide layers are about 1.1 ± 0.2 nm thick.
 
氧化石墨烯︰溶液 Graphene Oxide︰ Solutions
Dispersion in Water: Single Layer Graphene Oxide
單層氧化石墨烯水溶液
60 ml 單層氧化石墨烯水溶液 Concentration: 500 mg/L
Composition: Carbon (79%), Oxygen (20%)
Flake size: 0.3-0.7 microns
Thickness: 1 atomic layer - at least 80%.
Color:Brown

SEM圖像
175 ml 單層氧化石墨烯水溶液
Highly Concentrated Graphene Oxide
高濃縮氧化石墨烯
60 ml 高濃縮氧化石墨烯 Highly Concentrated Graphene Oxide Dispersion in Water
Aqueous dispersion, 60 ml
Concentration: 5g/L
Composition: Carbon (79%), Oxygen (20%)
Flake size: 0.5-5 microns
Thickness: 1 atomic layer - at least 60%.
Color:Brown

SEM圖像
175 ml 高濃縮氧化石墨烯
1000 ml 高濃縮氧化石墨烯
Ultra Highly Concentrated Single-Layer Graphene Oxide
超高濃縮單層氧化石墨烯
60 ml 高濃縮氧化石墨烯 Properties:
Concentration: 6.2 g/L
Single Layer > 80%
Flake Size: 0.5-5 Microns
Color: Brown
Highly Viscous

Centrifugation has been used to prepare extra-large flakes and get an ultra-high concentration of Graphene Oxide. The ultra-highly concentrated graphene oxide forms paper-like substances and will coat virtually any surface, including the bottle itself.

Production of Graphene Oxide:
Graphene Oxide is the oxidized form of graphene produced by oxidizing crystal graphite with a mixture of sulfuric acid, sodium nitrate, and potassium permanganate (the Hummers method). Structurally, Graphene Oxide can be visualized as a graphene sheet with its basal plane decorated by oxygen-containing groups. Due to high affinity to water molecules by these groups, Graphene Oxide is hydrophilic and can be dissolved in water. The solubility in water makes the deposition of the thin films of the Graphene Oxide straightforward. Graphene Oxide is a poor conductor but its treatment by light, heat, or chemical reduction can restore most properties of pristine graphene.

拉曼圖像
175 ml 高濃縮氧化石墨烯
500 ml 高濃縮氧化石墨烯

 


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