Making Graphitic Carbon Nitride
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- Опубліковано 6 лют 2025
- Using the new kiln to do something that has a lot of uses in a whole range of ways - If you want to have a look at those special videos become a member and join by clicking this link / @thinkingandtinkering
Very good Rob. Your kiln making video came a few years late for me as I brought one from England and shipped it to Australia as it was cheaper to do that than buy one here in Australia. I had to rebuild it about a year ago and made all those mistakes that one makes. My next kiln will be a home build from your video. Thanks Rob again.
glad you liked it mate - cheers
This is extremely exciting ! I never heard of this stuff, I might just wait for your experiments before I research it myself, its really fun being suprised by your videos !
cheers mate - glad you like it
Dope it with iron, better results for water splitting
Really enjoyed the video, can't wait for the Graphitic Carbon Nitride experiments. Cheers
glad you liked it mate - cheers
@@ThinkingandTinkering
I have question,please can you help me
Important video !! We are waiting for more videos about the grafitic carbon nitride experiments!! Thank youuu
it is a cool material
Good Day, Mr. Murray-Smith. Thank you ever so much for your videos. I am going to try this with borates.
Simple and quick explanation 👍
cheers mate
Robert Murray-Smith ever made your own electronics? Like ceramic components...
nice ! this video alone is enough to convince me, I need to make myself a kiln ! great video as always, two thumbs up :)
cheers mate
Robert, I am curious if you may have considered adding gCN to the clay-carbon-based material, particularly for use as HHO electrodes??? Seems an interesting potential, to me...
maybe nighthawks 'starlite?'and mix dough w/ copper particles for an Oakridge Lab.CO2 reduction to ethanol you tube video available..If you applied a H.V. to 'dough' it may give the spiked carbons oakridge described.What does the group,public-pub-liqours E.G.) think?I'm amateur radio General license kc1frf,and why I posted 'group' colloquesism.HHO electrode improvements are of high intrest.Tell us progress,please.
By the way; Great first run of the new kiln,, Thanks for sharing, keep up the awesome work......Tim
cheers mate
You did not waste any time in putting that kiln to work. Good for you!
lol - cheers for the post mate
Hey Robert, why not collect the Ammonia for other uses like and Ammonia chiller? Thank you Robert for all the knowledge you have spread all over the world. Because you are so willing to Teach. New things will be popping up from your open knowledge that really Schools don't teach, or at least not the way you do it. Thank you. P.S What would it cost to get your entire video collection? Just thought I would ask.
I suppose you could mate - never really thought about it - as for the vids - they would cost nothing - you can just download them for free I believe
These are the videos i liked to be honest, too many turbine models made in some 3d printer today
That is so awesome!!!! Thank you so much! I have been dying to see the video!
cheers mate
@@ThinkingandTinkering Now I can't wait to see a video on how to make a battery using the Graphitic Carbon Nitride that you made in your oven!
Dear Robert,
Hopefully to arrange for oxygen generator rather hydrogen, because now a days pepols required to go twoerds the O2 generators through water electrolyzers.
It would be realy nice of you.
Hi Robert, did you ever put the hydrogen storage ability to the test? I've only seen failures to store any hydrogen from various youtubers trying to make it work.
Well done , great job my friend 👍👍👍
cheers mate
I am very interested in h2 storage and loved your video please take it to the next level
Amen,cheers.
The hint with the ammonia vapor makes me think: my future DIY kiln will have a built-in multistage exhaust air filter system.
Hi robert, could you tell us the brand of urea that you used. Thanks
Maybe consider adding a rectifier in series with the heater elements with a manual switch across it - you'll get a half-power option.
for sure mate
I thought he would control temperature by microcontroller with PID control loop, so doing PWM with a solid state relais (you can DIY, just measure zero crossing of powering phase for switching on or off, then use a triac or High Voltage Power-MOS-FET; I would keep period below a second, so it does not have so much cycles of heating up and cooling down. The shorter period is, the more the "digital" heat package comes into play, when only switching on zero crossings is allowed, so 100Hz. We have to gain a fine granular heat control by adding some noise to the switching point of time, leading to a half mave more or less and distributing that in the spectrum of switching times.).
More granularity can only be obtained by flexible switching parts of the heating in series or parallel.
Hi Robert, another interesting and fun project, thanks.
Thought I would mention the master sound level on your videos is noticeably quieter than the utub average. To me anyway.
okay mate - cheers
Into profit on the 1st outing! Outstanding mate.
lol
Nice Work Earthling Bless Up
cheers mate
@@ThinkingandTinkering With Your Permission We Shall Abduct YOU Later
did u mean that I should turn off my furnace at every100 degs interval and after 15 minutes turn it on again?
how do they justify the price of graphitic carbon nitride when it's so easy to produce? love how your kiln found a proper place and use in your lab!
absolutely mate
What is the number of the next video to show what you can do with graphitic carbon nitride?
Great Robert. Very informative.
glad you liked it mate - cheers
Can a convection oven do the same job.
Loving the video pic 😂👌🏼 all jokes aside your an inspiration 🤔😇
lol - i am changing that thumbnail mate
@@ThinkingandTinkering I didn't mean to offend, you just look like a naughty kid who's been caught doing something he shouldn't have lol
@@onemansjunk01 Face looks a bit black. Has he been snorting graphite?
Ahh bo***x. Did I miss out?
@@grahamh4960 looks like it 😂 is that a chargeable offence 🤔😂
Lovely stuff, thanks again.
I'm not sure that I'd want to bake a loaf of bread in it after that haha. Jokes aside, I'm curious as to whether you will create a project using your gCN. You never cease to amaze me, cheers.
lol - no me neither - and yes I will
I would love to see you make a FLASH GRAPHENE unit. I bet yours would be even better than Rice University's.
Doing it mate - just waiting on arrival of the bits - seems they're severely held up by COVID...
If you ran the exhaust fumes of namonia through what you MAY be able to put it onto plants as a fertilizer I believe this is how aquaponice works
You could run it through a catalyst and make nitric acid to make fertilizer
you never cease to amaze me Robert absoulutely incredible... although even the over-cooked material could still thus be used to purify air/water/surfaces and even inside the bodies of animals/plants with slim and none adverse health affects, am i incorrect? As the lemony yellowish material is more specialty i think Elon Musk has been working on releasing a much more efficient form of photo-catalytic "solar cell" but has run into all kinds of challenges... i think the last time i researched it he was developing one that looked like posh roof tiles instead of the traditional black/silver glass panels that many consider unsightly.... Namaste
i have seen a few of this type mate
Are you intending to use that kiln in the lab? I think that would show a nice attitude and would be awesome!
already been using it mate
hi Robert
how much hydrogen can one get via photocatalysis process using lets say 1kg of graphitic carbon nitride
All I could find locally is 50lb bags of "feed grade" urea for $15.
Is "feed grade" OK to use?
Hey friend, are you making a battery out of newish type of electrodes for a battery? Nanofoam mate , a copper or silver foam with a graphene intergalation should be many steps forward. Knowing you ,you will have one by the end of next week
interesting idea mate - cheers
Excellent and so simple.
cheers mate
This oven Inert atmosphere?
Thank you for showing us that.
glad you liked it mate - cheers
tried to buy a mug but met a lot of resistance from their site, might look into that
I wonder how you cope with that loads of ammonia gas released while performing the polycondensation without a (at least visible) vent.
if you're going to this on a large scale, you will need ammonia scrubbers mate - even chicken houses have those
Robert Murray-Smith Yeah, I‘m aware of that, technically shouldn’t be an issue though, just wondering how you cope with the ammonia
I am SO excited to see what you'll use this in! Seriously very much looking forward to the next videos!
awesome mate
Would a kiln like that be capable of running 220c for 12 hours? If so you should make nanocrystallites using a benzene thermal reaction.
Yeah I googled it. Lol
the kiln will do fine at that - make a kiln, do it and make a video mate - i'd love to see it - cheers
A normal oven will do that that temperature happily
@@jamesbrown99991 hahahahaha,ahh...such fun...thanks...
@@jamesbrown99991 Yeah, but MUCH less energy efficiently. These little kilns besides being much smaller than a home stove, are much better insulated.
Sometimes you can find used jewelry kilns around for reasonable.
OK... That's awesome.
Where can I sell this graphitic carbon nitride?
Awesome thanks for the info your amazing for sharing your knowledge I'm sure your pay will be greatly lacking from what you deserve but good lord willing n cricks don't rise you reap your rewards you'll always have my greatest appreciation for the things you've thought me that I would've never dreamed of before stay great my friend
When I try making it all I get is just a few little pieces, like half a dozen or so, not even close to the volume I should be getting. I've tried expensive and cheap Urea and varied the length of time in the kiln. Any one have any thoughts on where I'm going wrong.
How to purification of g-C3N4? Method please
Hello!! Can anyone pls tell me if I need to turn the kiln off for 15 minutes or keep it running at 100 degrees and then after 15 increase it to 200 and so on???
I just ran my first batch of urea, and I got yellowish-gray stuff, but also some brown stuff. Did I over / under cook it? Or maybe too much oxygen got in? I saw in a research paper that they washed it in .1M nitric and distilled water to get rid of impurities.
would u mind mentioning the procedures you followed? and what type of furnace you used?
@@danielshumi6549 I put 50g of granulated urea into a small 100ml QWORK ceramic crucible. I heated it to 1023F (just barely over 550C) in a PMC tabletop oven and let it sit for 3 hours after it stabilized. I let it cool, and found the top layer had brown stuff. I did a second batch last night at 1200F for 3 hours and I have more brown stuff and almost no product at all. Both products were more gray than brown. The top lip of the crucible is not glazed.
@@cassiusclay3978 🙏
Now a member. I'm sure I missed something important in here.
inplace of urea could you use ammonia nitrate??
no
Can I ask you question,please
One question, is the amount of ammonia produced toxic? Or in anyway harmful?
Ammonia is self-warning. Yes, it is toxic, but you do not WANT to breath in toxic levels. So obey your lungs, and all will be fine. After all, if system really takes itself literally, in the urge to get rid of carbon based energy systems, we have to use ammonia. See Project Campfire by Fraunhofer Institue and many others to NH3 ships, as a first target.
The more interesting question is: do I have to vent the kiln "a little bit" to prevent corrosion on the heating wires? Or shove in some Nitrogen from Air Purifying or just a gulp from a bottle of welding gas?
And last,. Liking the soot face
lol
@@ThinkingandTinkering I thought its collodial silver water.
Brilliant!
cheers mate
So how about using this kiln and urea to dope activated carbon for batteries and clay supercapacitors?
yep - that's the plan - but members channel i think mate
@@ThinkingandTinkering Righto :)
If it's so cheap and easy to make, why is it so expensive to buy?
Very cool indeed
cheer mate
can i buy that?
Today an odd thing happened with me, I have prepared this stuff in the past i.e its bulk form which is shown in the above video. A programmable box furnace was used to conduct the process, 10g of urea (lab grade), and 10g of melamine (industrial grade) were placed in separate 50 ml alumina crucibles and heated to 550 deg C for 2h at a ramp rate of 5 deg C per minute. In the past lemon yellow product was obtained but today the UREA sample agglomerated to form a single crystal and no change was observed in the melamine sample. What could have gone wrong in your opinion? also, I have been trying to prepare nanotubes of g-C3N4 using melamine (industrial grade) as a precursor. Around .52g of melamine is dissolved in 20 ml ethylene glycol to get a sat. sol. Then 60ml of .12M HNO3 is added to this sol. dropwise under stirring. The ppt. is collected through filtration and washed with ethanol and dried in a vacuum oven at 55 deg C for 8h and then annealed in a box furnace at 350 deg C for 1h with a ramp rate of 8 deg C/min. I prepared 10 samples and XRD analysis of all those samples revealed a great deviation from literature. In your opinion what could have been the reason behind this? I want to synthesize a composite of Graphitic Carbon Nitride nanotubes and Zeolite Imidazole Framework - 8 (ZIF-8) to act as a photo-catalyst for reduction of CO2 to methanol.
Abdul Wahab I think it’s unlikely rob will get to see your comment as he has said he can’t get to read comments on old videos
It’s likely at some point he will do more on this subject and you could ask him then and have a much better chance of an answer
Which I would like to know more about co2 and co synthesis to useful stuff 😀
Robert, Buddy! You do no what the most common source of urea is for the chemical industry right? It's the portable water closet companies! I don't think I'd be pouring it in my hand eh? LMAO.......Tim
lol
Thermal shock , putting a hot mug on a toom temp stainless steel top
It was cooled for an hour beforehand.....
yep - i did say that
I was going to ask what the carbon source was and then I remembered it is already in it, embarrassing
.... Well on to a career in selling graphitic carbon nitride on E-bay at 90 dollars a gram ;)
lol - go for it mate
@@ThinkingandTinkering I actually found someone selling it for less than 20 USD per gram on E-bay! crazy world :)
Wouldn't be a huge target market for it. Most professional chemists refine their own ingredients so that they trust the purity
@@stevetobias4890 Well as it is on sale at E-bay for 18.95 and only 10 one gram units for sale I would say you are mostly correct.
I tried this after one of Robert's old videos using diesel exhaust fluid (~30% urea in distilled water) with sugar disolved in (I forget the ratio). It seemed to work ok with no ammonia smell. Worked in a 700w microwave kiln with minimal issue except for some boil over.
I'm not a professional chemist, so I can't be sure that it was graphitic carbon nitride.
The other related experiment uses boric acid in place of urea to make boron carbide.
These could theoretically be used as the "P" and "N" to make carbon based semiconductors that could be 3d printed.
that is awesome mate - thanks for sharing
pisschem!! to make DIY solar H2 generators
You are saying that amount you made is $1,000 retail?
last time i checked the price mate - you might want to check for yourself though
sell prepared gcn in photocatalyticc water splitting kits at a store near you,I'm working that way.
I sense we are getting closer to producing H2 from excess electricity.
looking like it mate
Urea. Off course smell like hamoniac, but really good to know. Thanks
cheers mate
Urea by itself or a water solution of pure urea shouldn’t smell... it’s a solid. Urine smells because it has urease, which decomposes the urea into ammonia (it smells like ammonia because it is!) and carbon dioxide.
Cool experiment. Although it's only about 20$ a gram on ebay
you can get it on ebay? - lol - that is awesome - by the way i looked - i didn't see anything available - and doesn't it strike you as odd to put only infront of something like $20 a gram - that is still really really expensive
@@ThinkingandTinkering 20$ a gram is still expensive for sure but not nearly as bad as 100$ a gram lol I was about to go get my old kiln out and order some urea and tell my wife we're about to be rich LOL.
Heres the link www.ebay.com/itm/Graphitic-Carbon-Nitride-1-Gram-of-a-HHo-storage-Super-Capacitor-Material-/303367779910
Robert Murray-Smith I guess they used only as you stated it was $100 per gram. I’m curious why more labs aren’t dedicating themselves to making this seeing as there are massive profit margins even at 20$ per gram ?
@@SzonSer exactly what I'm wondering. If there's a market for the stuff I already have the perfect setup to create it I just don't want to spend that time and make my garage stink like cat piss if there's no market for it
After a quick check, not on UK eBay, only Canada and USA :-(
Just one question and forgive me if this has already asked? Isn't Urea made from "Pee"? If so how do you make it? Just a question best answered by a European? (Your-A-Pee'n) LOL
it is the major component for sure - so - pee in a tray and wait a few week and you will have some lol
I love c3n4. It is dynamite
it is indeed an awesome material - 2.7eV band gap means a tone of uses
Nice
cheers mate
Where is the amonia coming from? Is the nitrogen of the air and water in the humidity combining to make the amonia?
no mate - it's part of the urea
Ok, I thought you meant it was giving off the amonia after it was out of the furnace. Thanks!
Eh! Hydrogen from solar? Don’t do that Robert. That’s just not fair.
:)
graphitic carbon nitride is known to be photoctalytic for water splitting - pretty interesting stuff - not sure if i can resist the temptation lol
@@ThinkingandTinkering go on
You know you want too.
Dig this!
awesome
I would make a really funny joke about the colour of ya cheeks mate... But I'll try not to get your channel shut down due to nonsense! Take care Bob
lol - yeah that is a lot of carbon lol
👍
cheers mate
Bubble the ammonia gas into water and stop buying ammonia at the store.