Grayton Giesman Nick Grosenbacher Joseph Nemec Background Graphene is a material made of carbon atoms in sheet form 1 It is so thin that it is often considered twodimensional It is widely cited as the strongest material ever created on a perweight basis but it also has in ID: 742413
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Slide1
Graphene Sponges
Team Netherlands
Grayton
Giesman
, Nick Grosenbacher, Joseph
NemecSlide2
Background
Graphene
is a material made of carbon atoms in sheet
form.1It is so thin that it is often considered two-dimensional.It is “widely cited as the strongest material ever created on a per-weight basis, but it also has incredibly high electrical conductivity.”1 (extremetech.com)
From source 1
1 Templeton, Graham. (2015) What Is Graphene?, extremetech.comSlide3
Significance
Graphene’s
small size but strong conductivity open many doors for electronic industries.
It’s incredibly strong, but still flexible.From source
1
1
1 Templeton
, Graham.
(2015) What
Is
Graphene
?, extremetech.comSlide4
Why are Graphene Sponges Effective?
Sponges are hydrophilic and oleophilic
2,3
They cannot separate organics from waterThe rGO coating makes sponges hydrophobic and oleophilic2,3Organic components absorbed, water left behind!
From source 4
2
Liu, Y, et al. (2013) Cost-effective Reduced Graphene Oxide-Coated Polyurethane Sponge As a Highly Efficient and Reusable Oil-Absorbent.
3
Tjandra
, Ricky, et al. (2015) Introduction of an Enhanced Binding of Reduced Graphene Oxide to Polyurethane Sponge for Oil Absorption.
4
Li,
Beibei
, et al. (2015) Oil-absorbent Polyurethane Sponge Coated with KH-570-modified Graphene
.Slide5
Process of Creating a Graphene Sponge
Very cutting edge
Most efficient method is the subject of many recent research
articles2,3,4Room for improvementCreate Graphene - Hummer’s Method
2,3,4Apply to sponges by suspending in graphene and then
baking them.Best apparent method so far2:Graphene oxide -> soak in solution of coupling agent -> reduce with NaHCO3 and hydrazine
2
Liu, Y, et al. (2013) Cost-effective Reduced Graphene Oxide-Coated Polyurethane Sponge As a Highly Efficient and Reusable Oil-Absorbent.
3
Tjandra
, Ricky, et al. (2015) Introduction of an Enhanced Binding of Reduced Graphene Oxide to Polyurethane Sponge for Oil Absorption.
4
Li,
Beibei
, et al. (2015) Oil-absorbent Polyurethane Sponge Coated with KH-570-modified Graphene
.
From source 2Slide6
Current Challenges
Up until very recently,
graphene
production was small and costly.1,5It also has a slight issue with electronics, as it has no gaps that make adjusting current easy.5
This makes it unviable for solar energy production5
1 Templeton, Graham. (2015) What Is Graphene?, extremetech.com
5
Bi,
Hengchang
, et al. (2012) Spongy
Graphene
as a Highly Efficient and Recyclable Sorbent for Oils and Organic Solvents
.Slide7
Future Uses/Improvements
Graphene
has a myriad of uses ranging from medicine to electrical components to use as a structural
material1Graphene sponges can be tailored to selectively absorb different organic material6
potential uses include cleaning up oil and chemical spills, purifying water, quick chemical identification, and filtration.
1 Templeton, Graham. (2015) What Is Graphene?, extremetech.com6
Bi,
Hengchang
, et al. (2012) Spongy
Graphene
as a Highly Efficient and Recyclable Sorbent for Oils and Organic Solvents
.