How To Make Graphene Sheets As Big As You Like
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- Опубліковано 29 лис 2013
- this is an interesting method of making graphene sheets in any size you would like. It is an extension of the idea of reducing graphene by nascent hydrogen production and probably well worth playing with to produce large sheets. You can buy kits and materials for your own experiments as well as my ebooks from our webshop at secure.workingink.co.uk/worki...
- Наука та технологія
The reason that Aluminum sheets are shiny on one side, and matte on the other, is that the final rolling of the sheets is so thin, that they lay it double to be able to roll it flat enough. The matte side is the side touching aluminum, and the shiny side is the one that was touching the roller.
Hey thanks for that! I didn't know that.
lol - mate - that is just mean - and a little silly to say
There's me 'something new' for today!
lol - v cool
yea, kitchen alu foil is NOT coated with plastic!
Your channel is pretty much the only one I know of that goes into detail about these things but doesn't go off on a tangent in the process. Thanks for all your videos!
i try mate lol
Attach the sheet to a speaker, hang over a container that is tall enough to stand the whole sheet up in, then play a low frequency sine wave through it so it's essentially being 'jiggles' up and down that way the bubbles get shaken off the sheet letting the acid get at new aluminium. I believe that you can use the same procedure to make electro-plating more efficient. Just a thought, awesome vids, new sub here 👍
Et c'est ce qui coule dans les veines de millions d'individus aujourd'hui au travers de ces "vaccins" !!!! 😠
@@fabroche69 non
Make a paint mixer from your subwoofer. 👍😁
Love it when you whistle, i dont know why but it reminds me of my childhood, walking and seeing an old man whistling. Please keep up the whistling sir
aim srilanka good vedio
Thankyou Robert what an inspiration you are!! Looking forward to your videos
Thank you for your time doing these videos , and taking the time to show us your experiments and giving suggestions on how we can or might improve on the proof of concept keep on keeping on and thanks again for your selflessness and openness this is the early years of graphene production and just like the production of cars and electronics it will get much better with experiments and time , Thanks again for sharing
--Robert Longamore
thanks for taking the time to write mate and i am glad they helped you
I made a sheet but I have lost it due to it being only 1 atom thick, I can't find it anywhere. :-(
Great video.
:( that’s too bad. You lost something you auction on eBay for a lot of money.
Robert you are my new hero! These videos are a few years old. I hope are are still making them!
I am indeed mate - there is a kind of progression in them
Is there any new method for mass production?
Love the idea, love the concept
Thanks for sharing
cheers mate
Wow thank you very much... cant wait for another session.
Thanks for sharing, great information.
Thank goodness you upgraded your camera since 2013.
Thank you for showing me the concept of making graphene sheets. Im a student of chemistry and i plan of retrying this process in the school laboratory. We have bouht graphene solution and graphene oxide solution, so i will try you'r method and i have a pair of my own ideas.
So... How did it go buddy?
Awesome and interesting, as usual. Cheers, and thanks!
cheers mate
Hi Robert, thank you for your contributions to the Global Community and UA-cam. Your videos and the great discussions that follow with many intelligent subscribers is amazing.
I was thinking that a silk screen kit for making t-shirts and such would be excellent for laying on the liquids in even thin layers. These can be found at your local art supply shops, even toy stores for very little money.
A little vibration after spreading the liquids may also help to even out distribution, maybe you could use your cell phone.
nice ideas mate - thanks for that - i will try them
Excellent news. Great vids by the way, thanks.
a perfume spritzer or "atomizer" would be great to mist the graphene oxide thinly and evenly.
Thank you good sir.
just how rigid/strong do these sheets usually come out (in the process shown here)?
now, If I understand correctly, this is not a single sheet of graphene but a homogeneous sheet of graphene in all kinds of directions. So it will have electrical properties of graphene but not mechanical properties?
exactly mate
Dan Lapain how is the progress with ur project
@Dan Lapain Or you can use these sheets in your typewriter to make copies of your writings.
Soo that mean is not strong?
@@rascubekm2822 Yup
Hey, To get that thick layer of coating, approximately how much ( in mL) of graphene oxide did you use? I have very limited GO to work with so knowing this would really help me.
PS. Great work! :)
could you make a list of ingredients for this. I would really like to make something like this
Thanks mr Pixely.
Excellent video. How do you keep your kitchen so clean,mine looks like the Luftwaffe had a direct hit on it. LOL.
Keep up the great videos
lol - i was it continually lol
Brilliant!!!!!
how many layers thick of graphene is this? And also, is there any way to test your finished product to see if it really works as graphene? I researched graphene a little bit, as to know its strength is even harder than diamond. Thanks for answering
Does the strength of the graphene stay the same or is that sheet of graphene able to rip, tear or poke easily?
I must say this is as good a cliff hanger as any on the old tube.
How about pulverising (spraying) the grepheene oxide on the aluminum sheet, would be applied in a thinner layer?
Maybe this would give better results
Could the sheets be hydraulicly pressed to achieve a much thinner material?
Note a correction: aluminum foil does Not have a coating of plastic. One side is shiny because it is double face rolled to thickness, then split to rolls for sale. The retardation of chemical reduction is due to the surface oxide of aluminum which is an inhibitor of further reaction until broken down. If you doubt this check out Alcoa manufacturing videos.
i don't doubt it mate - i know it now lol
Could the graphene solution be applied using a silkscreen machine more efficiently?
Caustic soda will also eat aluminium but may effect the varnish if too strong.
Could I use this method for a strong sheet. Not used for conducting power
Using the LightScribe method could I substitute Graphite for Graphite oxide in coating the disk or would this result in failure?
Hi Professor what do think about making water filter from graphene? any suggestion
Great video thank you, I hung on every word. Question if you were to use steel wool to sand or rough up the backside of the aluminum , opposite of the graphite layered side, would that increase the surface area enough to create a greater reaction with the acid to produce more of the needed reaction to the graphite oxide?
scott lund i don't know - it would speed up the reaction but it wouldn't produce 'more' as the amount is limited by the available reagents
Hi there Dr. Murray-Smith, I'd love to try this out - do you still sell GO in solution?
Thanxs for publishing these kind of informative videos sir.that was a great work...
cheers mate
What uses have you found for Graphene?
Great job! You produced graphite!
lol- fair enough
Wonderful explanation. I had a little trouble with the heavy accent but the illustration and explanation was a good exercise. Discussing the thickness control; is the cross section of thick graphene the same as the single molecule layer, or does the plate become opaque and effectively a solid plate?
How to attach two separate graphene sheets together at certain points only using some masking process which can be removed after joining is 100% robust?
Does this product, made this way, have a higher thermal conductivity than copper?
Greetings. What if NaOH was used instead on HCl? I recalled NaOH could react well with aluminium, producing lots of H2 gas in the process. Thanks.
Commercial caustic soda 50 % would be stable
Hi Rob, have you tried replicating Rice Universities flash graphene method(vaporize trash in vacuum tube). I want to do it to make 3d printing filament
I really like your "bucket and spade" approach! So many high tech high cost methods forget about the basic science to drive innovation (good one!). Any idea how I could make a transparent even layer of graphene onto a glass sheet via your in house methods? ( I used to do this with tin oxide vapor to make home made LCD's)
spin coating? it might be an idea
U have a question if you have a cylindrical Graphite block and use tape on a another Zylinder and roll both would the graphite exfoliate?
How strong would the sheet be?
So. How would you go about ‘plating’ your graphene sheet to the bottom of a glass jar for use as the electrode of a ZnBr2 battery? Just paint in the graphene oxide and treat with HCl?
sir, is this the graphemes famous for tensile strength?
Who knew i had a favorite uncle in EU lol. I can't thank you enough for your time and dedication! Im in the process of building a flow generator with your graphene sea water idea. I live on a sailboat with a constant minimum of 2 nt current flowing with the tide. Basically im layering the sheets with only a hold at one end and lose on the other. Im going to cheat a bit and use a concentration of copper chloride in ionized water. that will be pumped by a small pump (a venturi would be best so that as i sail the atmospheric difference would create a vacume to move the solution over the graphene sheets. ) Im thinking in the ball park of 1000 sheets that are 8" inchs by 60". Should be interesting at least lol. It sure would be easier to buy some ink from you but im not opposed to making grahpene with electrolysis. I plan to build this as large as i need to power the boat through the water by electric motor when no wind is available so my solar panels will pump the solution in the sunlight and also charge a battery bank that is dedicated to providing the power to pump the solution when night falls. It will be assisted further by the graphite and magnesium generator that will be hanging over the back of the boat like a rudder. Perhaps ill just build that part directly onto the rudder.. who knows. Point is that im am determined to power my boat, heater, and cooking by the world around me and your clever tricks lol. Thanks so much for everything.
i don't make the ink anymore mate - i gave it up when i did a video on how to make it for yourself - i am fascinated by what you are doing - let me know how it goes on
Robert Murray-Smith Thanks, that is a huge compliment that my project intrests you. I know it will work due to your awesome dedication. I can't thank you enough for your videos and to all those that dont want to hear you explain how all this crazyness works, dont be an ass. Cheers Uncle Rob
Just a thought, do you think the reaction would be more even if you mixed powdered aluminum into the ink and varnish lightly? I think ill try it
lol cheers mate
Ali will be a real problem mate because of the passivating coating of oxide
What’s the tensil strength of that graphene tho
Robert - Great content and very practical. Thank you. Is it possible to create a Graphene or styrene foam light and strong enough that it can contain vacuum such that it can be lighter than Air and lift a small payload?
Currently no.
In theory yes. Look up Vacuum airship
Thank you for posting these experiments. I totally understand that experimentation does not always result in "Success" as most understand "Success". Any true inventor knows that failure to produce the desired result may be a complete SUCCESS in terms of lessons learned, old theories proven wrong, surprising side effects, and the simple encouragement to improve on the obvious shortcomings of the current experiment which results in future learning and more refined experiments that one day may lead EVERYONE in a different direction than that which is currently considered "The way". Please keep your videos coming and keep working at derailing the current trane of thought..... YOU are and example of how innovation happens and, in my opinion, it's people like you who lead innovation on this earth. Corporations only do what they are "supposed to do"; thereby, holding innovation back and keeping the status quo.
fantastic mate - really good comment - thanks for posting
Would it be possible to make graphene sheets for water filtration in this way?
Awesome video This guy seems to know his stuff.
hello, i am curious as to why you do not use a "spin art machine" install the substrate in the machine, start it spinning, put the materials you need to coat with and watch the spinning spread the coating material in a beautiful thin film, lastly wait for the coatings to dry.
Thanks for sharing this video! My friend and I are going to be doing a science fair project that involves testing the properties of graphene. We were wondering if it is possible for graphene to inhibit bacterial growth by not allowing bacterial cells to bind? Would you happen to know anything about this?
graphene oxide works well to inhibit bacterial growth - it is antibacterial on contact if covered with silver nanoparticles
What about graphene paint? Or at least for other types of coatings and Impermeability? (Permeability and impermeability)
For any pores on this sheet, do you think it’s possible to control the size with any tweaks to the varnish?
How do you know the maximum voltage of your homemade capacitors? I want to make some for a project and I want to "fit" as much energy as possible in them! Thanks
don't multicast please - i have already answered this in another post
Does it has that incredible resistent proprietes?
What about airbrushing the graphene solution on? Surely this would give a thinner more uniform layer?
Could you paint the graphine oxide on a silicone sheet or some other surface that it would peel off and eliminate the aluminum?
So its better to see the video on 144p than 720p 60fps!!!...
Well thats strange
+Zona ALG i am sorry mate -- but that makes no sense to me - can you explain a bit more about what you mean?
+Robert Murray-Smith
Maybe because my screen resolution... (wich is 1920x1080)
But when im seeing this video on fullscreen and with 720p at 60frames I get a lot of big pixels moving around the screen
And when im seeing the video on 144p i havent any pixels, the only thing is that the video is blurred (but not a lot)
So thats why i said that
But i just discovered that the best quality is 360p (it isnt blurred but has some -pixels-)
+Zona ALG fair enough
+Robert Murray-Smith It's probably because the video was compressed too much before you uploaded it. Overly compressed video makes for small file size and less upload time, but also degrades the overall quality.
+supershwa cheers mate
What if we mix graphene and starlite
Sir, did you say formula 4ml/L ?
Would it be ok to use sodium silicate as a binder
I wonder if you use the same technique they use to screen print if you might get a more uniform varnish coat over the graphene?
good idea - give it a go
What if you were to treat the aluminium foil with a weak Copper (II) Sulphate solution prior to coating it with Graphene Oxide creating a nanoporous ultra thin substrate (kinda like the stuff used in electrolytic capacitors). Do you think this would work? Part of me would like to think the porous aluminium foil would allow the Hydrogen to pass through more readily reducing the Graphene Oxide more evenly.
Hi Robert
Thank you for the wonderful videos. I have watched many of them and have a chemistry lab in my backyard, I believe I have made the sheet Graphene oxide like you showed and would like to use the microporous varnish you used but I am having a hard time finding it where I live. Can you recommend a brand that I can look up. Perhaps I am specifying it incorrectly when I speak to the paint stores.
I hope you are well and look forward to learning more from you. You really make a difference. I have learned so much from you.
Thank you,
Daniel L -From Santa Barbara, California.
Hiya Mate,
Thanks for the kind comments - what you want is a varnish that allows the wood to breath - this is how they describe it and this type is the microporous stuff
Well I'm sorry if my question sounds stupid however when I can think of is if graphing is to store a high currents then a high resistance basically would mean high battery life I guess I'm just randomly asking Sarah is no big deal
Any follow-ups with this idea?
where do you get graphene oxide
Im wondering how strong those sheets are, even if they're thicker than anticipated and are still partially unreacted graphine oxide, they may still have industrial or commercial use due to the flexibility and how easily they were produced.
true enough - i use the graphen oxide for graphene in the supercaps
also could you possibly show a video on furthering the reduction process for a stronger more pure graphene sheet.reducing out all the graphene oxide.
Paul Gilardi sure
If you add hydrogen peroxide to the hydrochloric acid, it should speed up the reaction quit a bit. When etching circuit boards, you generally use 2 parts hydrogen peroxide to 1 part hydrochloric acid. It takes about 5 mins to eat all the exposed copper. You could try using 5cm copper tape. You can buy 1 meter of 5 cm copper tape off ebay for about $2 or so.
What if you where to coat something hard and smooth like a marble tile with the carbon solution, then after it dries, lift it with very sticky tape, then you would have the layer of carbon with a plastic backing, then you could expose it to laser light. No need for the acid bath.
cheers mate - nice post
Thanks. I forgot to mention, that's the common 3% hydrogen peroxide. Always add the hydrochloric acid TO THE hydrogen peroxide, not the other way around like I stated it above.
cheers mate
Robert Tomkinson
Pour water into acid, because the water is the fuel source for the reaction.
A drop of water decomposes with some heat.
A liter of water will cook your face when it reacts.
Wish I could, but that's not possible right now.
When I do make some, I would like to get the most conductive graphene possible, has to be better than silver or its not worth it because I will just use silver then, Do you recommend a process that will make a good conducting graphene, or are all the ways I have to make it the same?
Hello, I am very intrested in graphene material, although I was wondering how could you make graphite oxide, can you make them from graphite present in pencils?
certainly but like so much in life the end result will be good or bad depending on the material you start with
Is this incredibly hard like bulletproof or soft
That link at the first seconds to the PDF doesnt work anymore. Shows an redirect loop or whatever, but the page seems like is down anyway.
we took that bit down as we no longer do it - i will revisit the link mate - thanks for letting me know
May the Father's Kingdom bless you Son. Ur a beautiful soul
Anyone here tried tea tree ( oil?) growth of graphene? I watched another video of Bob's where he already had the graphene and used a tea ( green tea) to soak it, as a reducer? Is there a market for a tea tree grower here? Is there any videos on how to get the graphene growing from tea tree (oil) Thanks!
If the dispersion of the graphene is irregular, how well would this work for use as a Faraday cage to shield from microwave (imaging)? I was looking for an alternative to the cost of Y-shield paint or graphene sheets. I think it would be more effective if combined with either copper or silver particulate mixed in varnish, applied afterwards. Although it might be best to forego the reduction of the aluminum; it just isn't aesthetically pleasing.
Hi how have you managed to deal with the emf ?
If you were to melt a bunch of those graphene sheets together would you get graphite or a graphene plate?
graphite i imagine
So if i shoot that sheet, will it survive?
As I was thinking how to do the freestanding sheet, you said it. :P
lol - give it a go and let me know how it turns out
I may have hit a wall on the grocery store bags the best I've achieved is between 40 to 60 ohms resistance.
+Robert Coffin that's still pretty good mate
You said something about microporous varnish ..Can you create like pores in the Graphene with this varnish ? If not what material would you suggest to create pathways for the H2 in nanopores ? Regards.
I have no idea mate - but it's worth looking into - give it a go and let me know how you get on
impressive as usual, love the vids ty for broadcatsing! i was wondering about your take, on the possibility of making Tin into a graphene like like sheet? the reason is, i was watching somthing about Tin being "theoretically" made into a graphene like latus which made super condctivity at room temp plausible. and if floride or maybee it was flauriene is added, super conductivity at boiling points is mathmaticly possible. i am very interested in your opinion thank you again.
Hiya mate, Thanks for your kind comments - i think it is more than possible - but it is going to be a question of stability. After all bromine intercalated graphene is superconductive at room temperature but very unstable.
How do we test it for Quality? Would there be a market in mass production of these sheets yet?
SEM, FTIR and/or ramen - i don't know of any real mass market mate - sorry
Sir can u please tell me what is the pore size of the sheet
Another question: How high temperatures can graphene in your experience withstand? the melting point is slightly higher than with graphite at 4510K, and thermal conductivity is superb along the lattice. This would make graphene an excellent heat shield, especially when connected to a sink. But some reports claim that graphene can't withstand temperatures higher than 120 Celsius.
+Tom Starwalker it depends on the surround but it begins to burn away at 400C
I almost didn't recognise you in a kitchen! ;+} Very handy indeed, i use graphene sheets of sorts for microbial fuel cells. Thanks for sharing :)
Are these sheets the same as other ones, i mean with the properties, because i read up on graphene and it's as strong as diamond. Are these the same?
not quite
Hey I tried to make the sheets but the graphene would not spread evenly, how would I get over this obstacle?
clean your surface with acetone and make it more liquid
i also wonder what would happen if you mixed the Graphene oxide with aluminum powder then tried to dry it out with this process and make a sheet in hydrochloric acid. would this destroy the structure of the Graphene during the reduction process or would it form a purer sheet.
Paul Gilardi you could always try it and see
Do you think for other forms of graphene production, is it viable to recover any hydrogen that is given off? Or is that just foolish?
Could any of the Hydrogen captured go to feeding other processes like flash graphene and hydrogen fuel cells? As far as efficiency goes (besides recovering that heat)
Are these contiguous sheets the same as the sort you got with the pipe fitting pressure cooker assembly of yours and the kind you get via copper sheets + vapor deposition, IE an A4 sized single molecule with a mollecular weight beyond comprehension, or would it be more akin to dispersing a lump of graphite(lots of micro-sheets) into a sheet?
Also, could sheets produced frome a refined version of this process hold up to the metrics normally associated with graphene like absurdly high sheer/torsion/tensile/conductivity/electron velocity strengths?
more like lots of microsheets - which is really what the Tang Lau produces anyway. I would guess they would hold up really well - certainly well worth working with - particularly when you think not a lot of people have CVD capabilities.
How fluid is the liquid preparation you are using? I am curious about the hydraulic action you could expect, if say, you were to press your liquid preparation between 2 sheets of foil between 2 very flat plates with some substantial tonnage... if the carrier medium foil was strong enough to remain intact through the pressing, and didn't stick to the pressing plates when finished, would this help give you an easier way to produce a more uniform, if not thinner cross section thickness? And then the question becomes if your graphene sheet will survive the process of removing the production medium... interesting video, makes you wonder if an older technology technique such as every day paper making machines could be adapted to produce a larger volume cost effectively at a quality level useful enough for most production needs... even a cheaper means to obtain a larger amount of a lower but acceptable grade of product, this could revolutionize society over night, while the innovation process works out the details for producing higher quality grade material in the future....