Clean Water

SDG 6 is to “ensure availability and sustainable management of water and sanitation for all.” As of now, the UN estimates that “water scarcity affects more than 40 percent of the global population and is projected to rise.”

Graphene-based filters could very well be the solution. Jiro Abraham from the University of Manchester helped develop scalable graphene oxide sieves to filter seawater. He claims, “The developed membranes are not only useful for desalination, but the atomic scale tunability of the pore size also opens new opportunity to fabricate membranes with on-demand filtration capable of filtering out ions according to their sizes.”

Furthermore, researchers from Monash University and the University of Kentucky have developed graphene filters that can filter out anything larger than one nanometer. They say their filters “could be used to filter chemicals, viruses, or bacteria from a range of liquids. It could be used to purify water, dairy products or wine, or in the production of pharmaceuticals.”

Carbon Emissions

SDG 13 focuses on taking “urgent action to combat climate change and its impacts.”

Of course, one of the main culprits behind climate change is the excessive amount of carbon dioxide being emitted into the atmosphere. Graphene membranes have been developed that can capture these emissions.

Researchers at the University of South Carolina and Hanyang University in South Korea independently developed graphene-based filters that can be used to separate unwanted gases from industrial, commercial, and residential emissions. Henry Foley at the University of Missouri has claimed these discoveries are “something of a holy grail.”

With these, the world might be able to stem the rise of CO2 in the atmosphere, especially now that we have crossed the important 400 parts per million threshold.

Healthcare

Many around the world do not have access to adequate healthcare, but graphene may have an impact here as well.

First of all, graphene’s high mechanical strength makes it a perfect material for replacing body parts like bones, and because of its conductivity it can replace body parts that require electrical current, like organs and nerves. In fact, researchers at the Michigan Technological University are working on using 3D printers to print graphene-based nerves, and this team is developing biocompatible materials using graphene to conduct electricity.

Graphene can also be used to make biomedical sensors for detecting diseases, viruses, and other toxins. Because every atom of graphene is exposed, due to it being only one atom thick, sensors can be far more sensitive. Graphene oxide sensors, for example, could detect toxins at levels 10 times less than today’s sensors. These sensors could be placed on or under the skin and provide doctors and researchers with vast amounts of information.

Chinese scientists have even created a sensor that can detect a single cancerous cell. Further, scientists at the University of Manchester report graphene oxide can hunt and neutralize cancer stem cells.

Infrastructure

SDG 9 is to “build resilient infrastructure, promote inclusive and sustainable industrialization and foster innovation.” Graphene-enhanced composites and other building materials could bring us closer to meeting this goal.

Recent research shows that the more graphene is added, the better the composite becomes. This means graphene can be added to building materials like concrete, aluminum, etc., which will allow for stronger and lighter materials.

Resins are also getting better thanks to the addition of graphene. Research by Graphene Flagship, the EU’s billion-euro project to further graphene research, and their partner Avanzare suggests “graphene enhances the functionality of the resin, combining graphene’s electrical conductivity and mechanical strength with excellent corrosion resistance.” Some uses for this are making pipes and storage tanks corrosion-resistant, and making stronger adhesives.

Energy

SDG 7 is to “ensure access to affordable, reliable, sustainable and modern energy for all.” Because of its light weight, conductivity, and tensile strength, graphene may make sustainable energy cheaper and more efficient.

For example, graphene composites can be used to create more versatile solar panels. Researchers at MIT say, “The ability to use graphene…is making possible truly flexible, low-cost, transparent solar cells that can turn virtually any surface into a source of electric power.”

We’ll also be able to build bigger and lighter wind turbines thanks to graphene composites.

Further, graphene is already being used to enhance traditional lithium-ion batteries, which are the batteries commonly found in consumer electronics. Research is also being done into graphene aerogels for energy storage and supercapacitors. All of these will be essential for large-scale storage of renewable energy.

Over the next decade, graphene is likely to find more and more uses out in the real world, not only helping the UN and member states meet the SDGs, but enhancing everything from touch screens to MRI machines and from transistors to unknown uses as a superconductor.

New research is being published and new patents being filed regularly, so keep an eye out for this amazing material.

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Graphene might be one of the world’s most useful materials. Though it’s only one carbon atom thick, it’s many times stronger than steel, and highly flexible to boot.

Ever since it was first isolated by researchers in 2004, the list of patents involving graphene has grown exponentially every year. It may not be long before this supermaterial spawns a technological revolution that could truly change the world. Here are several profound graphene inventions to look forward to in the near future.

1. Fuel from the air

The same researchers who won the Nobel Prize for isolating graphene, Andre Geim of Manchester University and colleagues, have shown that graphene could be used to make mobile electric generators powered by hydrogen extracted from the air. Geim’s team discovered that although graphene is impermeable to even the smallest of atoms, it can be used to sieve hydrogen atoms stripped of their electrons.

This means graphene films could be used to vastly improve the efficiency of proton-conducting membranes, which are essential components of fuel-cell technology. Geim imagines a future in which vehicles could be powered just by the tiny amounts of hydrogen in ambient air. “Essentially, you pump your fuel from the atmosphere and get electricity out of it,” Geim said.

2. Protection from mosquitoes

The same impermeability that comes into play with fuel cells raises other potential uses for graphene, including keeping mosquitoes at bay. In this application, researchers found two pathways to block these deadly insects.

Layers of graphene can block mosquitoes’ ability to sense skin- or sweat-associated chemicals, researchers at Brown University discovered, offering the potential of an unusual, non-chemical approach to dealing with them. On top of that, the layers provide a physical barrier that mosquitoes simply can’t bite through. Their work, published in the Proceedings of the National Academy of Sciences, initially focused on the mechanical solution but quickly uncovered the graphene’s other secret ability.

The next step is to work on creating a version of the graphene barrier that works as effectively when wet as it does when dry, as the mosquitoes were able to get their fascicle, or feeding apparatus, through the fabric when it was wet.

3. More available drinkable water

Graphene could help solve the world water crisis. Membranes made from graphene can be big enough to let water through, but small enough to filter out the salt. In other words, graphene could revolutionize desalination technology. MIT researchers have found “that the water permeability of this material is several orders of magnitude higher than conventional reverse osmosis membranes, and that nanoporous graphene may have a valuable role to play for water purification.”

In fact, a type of graphene has proven so effective at water filtration that it rendered water samples from Sydney Harbor safe to drink after passing through the filter just once. In a study published in Nature Communications, researchers with Australia’s Commonwealth Scientific and Industrial Research Organization (CSIRO) used a form of graphene called “Graphair” to make the seawater drinkable after a single treatment.

“This technology can create clean drinking water, regardless of how dirty it is, in a single step,” CSIRO scientist Dong Han Seo said in a statement. “All that’s needed is heat, our graphene, a membrane filter and a small water pump. We’re hoping to commence field trials in a developing-world community next year.”

Additional research published in Materials Science & Engineering C in 2019 took that concept a step further, making the need for chlorination obsolete. Scientists from Russia’s National University of Science and Technology (MISiS) and others showed that injecting graphene oxide into a solution containing E.coli, the graphene “captures” the bacteria by forming flakes, according to Eureka Alert. Once the flakes were fished out of the solution, the water was drinkable and the graphene could even be reused.

4. Electronics

Forget Silicon Valley; the future may rest in Graphene Valley. Today our electronic devices rely on silicon as a key component, but transistors made of silicon are approaching the minimum size at which they can be effective, which means the speed of our devices will soon bottom out. Yet the ultra-thin nature of graphene could be the answer to this problem. It may not be long before graphene replaces silicon in our electronic devices, making them faster than ever before.

Graphene will also make it possible to build super thin, flexible touchscreens that would be virtually unbreakable. You’ll never have to worry about shattering your smartphone again.

In 2018, researchers from the Massachusetts Institute of Technology (MIT) and Harvard University revealed that graphene can have even more surprising electronic properties. It can be tuned to behave at two electric extremes: as an insulator or a superconductor. In other words, the same material can either block the flow of electrons or conduct an electrical stream without resistance.

“We can now use graphene as a new platform for investigating unconventional superconductivity,” says Pablo Jarillo-Herrero, an associate professor of physics at MIT, in a statement. “One can also imagine making a superconducting transistor out of graphene, which you can switch on and off, from superconducting to insulating. That opens many possibilities for quantum devices.”

5. Predator vision

The classic sci-fi action film “Predator” features an alien assassin that has the ability to see the world in thermal infrared. Now, thanks to graphene, you might be able to have “Predator” vision. Researchers from the University of Michigan have developed a graphene contact lens that allows wearer to sense the whole infrared spectrum — plus visible and ultraviolet light.

“If we integrate it with a contact lens or other wearable electronics, it expands your vision,” said Zhaohui Zhong, one of the researchers developing the technology. “It provides you another way of interacting with your environment.”

6. A better condom

Graphene may even have the ability to improve your sex life. Condoms made from graphene can be super-thin, which means more sensation. They would also be super-strong, which means they’re less likely to break — the true test of any condom.

“If this project is successful, we might have a use for graphene which will touch our everyday life in the most intimate way,” said Aravind Vijayaraghavan, the materials scientist leading research into graphene condoms, in 2013.

The quest for a graphene condom has been slower than some advocates expected, but it’s still going. The Bill and Melinda Gates Foundation made waves in 2013 when it funded research on graphene condoms, and while that effort has languished a bit, it has shown enough promise to earn additional funding. In the meantime, at least one company has jumped on the bandwagon with a “graphene-inspired condom,” which doesn’t actually use graphene but borrows its hexagonal structure.

Because graphene is virtually impermeable, a coat of graphene-based paint could one day be used to eradicate corrosion and rust. Researchers have even shown that glassware or copper plates covered with graphene paint can be used as containers for strongly corrosive acids.

“Graphene paint has a good chance to become a truly revolutionary product for industries that deal with any kind of protection either from air, weather elements or corrosive chemicals,” said Rahul Nair, one of the researchers developing the technology. “Those include, for example, medical, electronics and nuclear industry or even shipbuilding, to name but the few.”

8. Glowing wallpaper

Glowing walls could soon replace the light bulb, thanks to the development of new graphene-based electrode technology that makes displays thinner than ever before. Such glowing “wallpaper” provides more pleasant, adjustable light across a room than light bulbs can, and it can also be made more energy-efficient. And, let’s face it, few things seem more futuristic than illuminated “Tron”-like walls.

“By using graphene instead of conventional metal electrodes, components of the future will be much easier to recycle and thereby environmentally attractive,” said Nathaniel Robinson of Linköping University, where the tech is being developed.

9. Bionic humans

If you feel overly integrated with your technology already, you ain’t seen nothing yet. Graphene research is now leading to experiments where electronics can integrate with your biological systems. Basically, it may soon be possible to be implanted with graphene gadgets that can read your nervous system or talk to your cells.

This could lead to breakthroughs in medical science, helping doctors monitor your body or even adjust your biological systems for optimal health. The technology could also help fitness fanatics track and monitor their workout regimens.

10. Better, safer hair dyes

This may not change the world quite as much as some other applications, but graphene has also shown promise as a safer alternative to toxic hair dyes. In a 2018 study, researchers from Northwestern University report that graphene can not only match the performance of permanent hair dyes, but it can do so without any organic solvents or toxic molecular ingredients. On top of that, it can offer enhanced antibacterial, antistatic and thermal-dissipation properties to hair.

The researchers sprayed a graphene-oxide gel onto blond human hair and let it dry for 10 minutes. The strands of hair were coated in a graphene film just 2 microns thick, which reportedly stayed in place even after 30 washes. The antistatic properties could offer further aesthetic benefits, and the coating should cause no harm to your hair or health, the study’s authors say.

“This is an idea that was inspired by curiosity. It was very fun to do, but it didn’t sound very big and noble when we started working on it,” says senior author Jiaxing Huang, a materials scientist at Northwestern, in a statement. “But after we deep-dived into studying hair dyes, we realized that, wow, this is actually not at all a small problem. And it’s one that graphene could really help to solve.”

11. Bulletproof armour

Given how thin and strong graphene is, it seems inevitable that it should also be used to build improved bulletproof vests. Sure enough, researchers have found that sheets of graphene absorbed twice as much impact as Kevlar, the material commonly used in bulletproof vests. Also an improvement over Kevlar, graphene is super-lightweight and therefore less restrictive to wear. The breakthrough could help keep our soldiers and law enforcement officers safe when being fired at. The thin nature of graphene could even lead to developments in other bulletproof surfaces, such as windows.

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