Boron/Carbon Nanosponges Used to Absorb Oil from Water
April 17, 2012 12:04 PM
comment(s) - last by
The nanosponges can be reused as well
Rice University and Penn State University researchers have collaborated to create a sponge capable of
soaking up oil spilled in water
, which could have a profound impact on the environment.
Daniel Hashim, study leader and graduate student at Rice University, along with Pulickel Ajayan, professor in Mechanical Engineering and Materials Science at Rice University, and Mauricio Terrones, professor of physics, materials science and engineering at Penn State University, are all responsible for the latest creation.
According to the research team, the sponges are made of nanotubes that had a bit of the chemical element boron added to the carbon. By adding boron to the carbon, the nanotubes turned into solid, yet spongy blocks.
Boron is the main secret ingredient behind the nanosponges. By adding boron, the nanotubes grew bends and "elbows" to help produce covalent bonds, which allow the nanosponges to perform the way they do. The sponges are 99 percent air, can be manipulated using magnets, and conduct electricity. They're also superhydrophobic, meaning they float better because they dislike water, and oleophilic, meaning they're attracted to oil.
These nanosponges are
capable of soaking up oil
and being reused after doing so. According to the team, the nanosponges can undergo about 10,000 compressions where oil is soaked into the sponge, burned off, and returned to the water to soak more. Also, the sponges can hold more than a hundred times their weight in oil.
Nanosponge with boron [Source: Rice University]
"Our goal was to find a way to make three-dimensional networks of these carbon nanotubes that would form a macroscale fabric — a spongy block of nanotubes that would be big and thick enough to be used to clean up oil spills and to perform other tasks,” said Terrones. “We realized that the trick was adding boron — a chemical element next to carbon on the periodic table — because boron helps to trigger the interconnections of the material. To add the boron, we used very high temperatures and we then ‘knitted’ the substance into the nanotube fabric.
"Oil-spill remediation and environmental cleanup are just the beginning of how useful these new nanotube materials could be. For example, we could use these materials to make more efficient and lighter batteries. We could use them as scaffolds for bone-tissue regeneration. We even could impregnate the nanotube sponge with polymers to fabricate robust and light composites for the automobile and plane industries.”
Such nanosponges could come in handy one day for major spills, such as the BP oil spill that occurred in April 2010 when the Deepwater Horizon drilling rig exploded and leaked oil into the Gulf of Mexico for three months. It was described as the
"worst spill in U.S. history."
This also isn't the first nanosponge to be used for absorbing oil. In early 2010, Dr. Paul Edmiston of the College of Wooster in Ohio created
a glass nanosponge
capable of removing oil from water.
This article is over a month old, voting and posting comments is disabled
RE: if they can ramp it up..
4/17/2012 2:58:07 PM
1. Apparently $2-$5 per gram.
1a. We will find out if oil companies invest in the technology.
2. It's possible that the negative medical impact of the detergents they currently use may be comparable.
My question is: How well does it work in cold environments? Would it make oil-spill cleanup viable in places like the ocean off Alaska?
RE: if they can ramp it up..
4/18/2012 8:38:49 PM
Boron is used every day by many people in the form of Borax(Sodium Borate) which is used as laundry detergent and also the main ingredient in "Roach Pruf". It is a fairly common element on Earth so it should not be very expensive at all.
Highly purified it may cost $2-$5 per gram, but if they can use it in the Borax form in the process to make the nanotubes then it is pretty much dirt cheap since you can buy 20 Mule Team Borax Laundry Enhancer at $7.90 per 2.15kg or high purity from the chemical supply house at $15 for 500g. Also the Boron Oxide form is almost as cheap for 99%+ purity.
"We don't know how to make a $500 computer that's not a piece of junk." -- Apple CEO Steve Jobs
Report Released by BP Reveals Causes of Gulf Oil Spill
September 8, 2010, 6:29 PM
X Prize Looks to Clean up BP's Messy Oil Spill
July 28, 2010, 9:14 AM
Gulf Oil Spill Likely to be Worst Spill in U.S. History, Raises Call For Nuclear
May 1, 2010, 10:55 PM
Scientist Invents Glass Nanosponge to Remove Oil Sludge from Water
January 14, 2010, 12:34 AM
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Most Popular Articles
Why the U.S. Won't be Able to Ban Google's New Huawei Marshmallow Flagship Phone
October 3, 2015, 5:27 PM
Microsoft Band 2 Stays Focused on Fitness, Debuts Oct. 30, Priced at $249
October 6, 2015, 9:16 PM
Tag Heuer Admits Its $1,800 Smartwatch Was Inspired By Apple -- Price-Wise
September 30, 2015, 6:32 PM
Apple's First Fixes to iOS 9 Land w/ iOS 9.0.1 Release
September 23, 2015, 6:11 PM
Breaking Bad: How to Crash Google's Chrome Browser With Just 8 Characters
September 23, 2015, 11:08 AM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information