God is great almas Jacob yaar haat off from 50k to 230k and still growing it's because of patience and love for God and God is love who made everything with his love ❤

Very good.... I like it.

Hat's off to you for the preparations and your detailed process carried out to obtain graphene. Thank you once again from Jawaharlal Bharath India 👍🙏

@polymerscope6881

Жыл бұрын

Thank u bro

Very Very nice THANKS

Thank you very much for this video

Thankyou for this video

Muy buen resultado. No se puede simplificar oxidando el grafito y luego reduciéndolo termicamente en horno???Digo yo que unas cuantas horas de lavados etc etc podriamos ahorrar no ??. Hay muchos oxidantes fuertes que en condiciones de presiôn adecuadas pueden separar las capas de grafito y este una vez oxidado pasarlo a estufa para separar las hipoteticas capas de grapheno que al final no son ùnicas si no que llevan varias capas de grapheno....

Can the rGO obtained be used for Electrophoretic Deposition say for e.g. on CNT or Carbon Fibre Electrode?

which type of paper did you use for membrane washing?

Super! Thank you very much!

@polymerscope6881

Жыл бұрын

Thanks

Is the filtration paper not going to get damaged and particles of it will fall into the rGO?

Awesome stuff

@polymerscope6881

Жыл бұрын

Thnx.

how much Sodium Borohydride is used?

Why use a reflux assembly? I am also why 500ml of water is supplied at this time. 2:14 Please answer.🙏

Thank you very much for the video! Some steps were enlightening. The final rGO was obtained in the beaker. Can I dry it in an oven to get powdered rGO?

@polymerscope6881

2 жыл бұрын

Yes, u can dry in oven but max at 60 C. İf u have vaccum drier, u should use it.

4.25. When you was use the gallon to filter the GO, did you make a hole in a conical gallon piece? because the conical gallon it seems not clear. Please respons

@polymerscope6881

10 ай бұрын

Yes. Holes were drilled in the conical part in order to make a good washing.

@AlKholif

10 ай бұрын

@@polymerscope6881 what you mean is that you make holes on all sides of the cone?

@polymerscope6881

10 ай бұрын

to facilitate ion diffusion

How much time the whole procedure take

Thank Q.

is there a relation to the borene with tj.g e boronitride i see a similarity there in the sense that the carbon boron both having 4 bonds so they have a similar lattice and properties in their theoretical perfect lattice configurations... if that makes any sense....

@polymerscope6881

Жыл бұрын

Here, sodium borohydride was used to reduce GO. You can also use hydrazine hydrate or absorbic acid instead.

5.23 you showed the bottle of sodium carbonate but in subtitle it says NaSO3. What to use? Sir please reply.

@polymerscope6881

11 ай бұрын

Sodium Carbonate NaCO3 👍

Does this GO decompose into Graphene if Pulse flased with it laser or focus sunlight ? For Lightscribe Caps .

@polymerscope6881

Жыл бұрын

I've seen several articles about making graphene using these methods.

@omsingharjit

Жыл бұрын

@@polymerscope6881 you mean Graphene from GO right !

@polymerscope6881

Жыл бұрын

Yes.

May I ask how long did it take for the membrane filtration to finish? I am washing some graphene oxide that I made a few days ago using a method similar to yours.

@NoahKainWhittington

Жыл бұрын

I repeated this experiment to the T and realized the membrane filtration takes like a week if you want a PH of 6.5 to 7.

in the oil bath, what oil to use in it. if not using reflux, is it possible? please respond.

@polymerscope6881

2 жыл бұрын

U can use the mineral oil. Due tu temeperature reach about 100 C, u should use the reflux system.

which filter paper you used?? My filter paper get worn out due to strong acid when I try to filter it out

@polymerscope6881

2 жыл бұрын

Coarse filtration paper was used. You can filter the solution by diluting it with distilled water.

Could you please provide specifics on the filter filter paper that was used ? btw, Amazingly straight forward and great video sir.

@polymerscope6881

Жыл бұрын

Thank u, It is normal rough filter paper.

izlerken yoruldum

Quelle est la vitesse de l'agitateur?

hocam kurşun geçirmez plakayı bu rGO halini kalıba dökerek mi elde ediyoruz ?

@polymerscope6881

Жыл бұрын

Literatürde bu konuda örnek çalışmalar var. İyi bir kompozit hazırlayabilirseniz başarırsınız.

Please what is the kind of fabric that used in membrane filtration Thank you very much that is very useful video

@polymerscope6881

2 жыл бұрын

Thank u. Coarse filtration paper was used.

Is there a reason you did not use vacuum filtration in combination with your membrane filtration methods? It may have significantly reduced the time required for the rinsing and filtering steps.

@polymerscope6881

Жыл бұрын

Since GO becomes gel-like after pH 5, it is not possible to filter and wash with vacuum filtration.

lot of thanks for you. I didn't find NaBH4 , will please inform me by another material.

@polymerscope6881

Жыл бұрын

Thank you. You can use hydrazine hydrate instead of NaBH4. Add 3 grams of GO to 600 ml of distilled water and add 90 ml of 80% hydrosine hydrate to it. Mix at 95 °C for 24 hours.

Why i am suddenly getting graphene recommendation at midnight 🤨

@manuelferreira4345

Жыл бұрын

For real what did I do?

@aomedina3844

Жыл бұрын

Graphene is all you need!

@akshaygarg2429

Жыл бұрын

​@@aomedina3844 s

@yourfriend3999

3 ай бұрын

because it's science time😂

If we manufacturing GO, the steps are only up to the addition NaSO3 right to make the pH is neutral. How about the steps to produce Eco-friendly GO. whether we have to remove NaNO3?

@polymerscope6881

10 ай бұрын

NaSO3 was typed incorrectly. NaCO3 was used. This is the chemical method. The famous Hummer method. We cannot remove NaNO3. Of course there are green methods.

@AlKholif

10 ай бұрын

@@polymerscope6881 In some papers, they are mentioned that, we can eliminating NaNO3. Because NaNO3 can release toxic gases when synthesis process. So that, I make it the Eco Friendly GO without used NaNO3. But I need more time to washing the GO after the pH is neutral.

After adding KMnO4 into the system it becomes MnO2 (brown coloured). Did you eliminate it?

@polymerscope6881

Жыл бұрын

Of course, it wash with acetone and distilled water.

What was the particle size of the graphite powder (Starting material)

@polymerscope6881

Жыл бұрын

It was about 20 micron.

Can you please tell me what kind and what grade of graphite did you use for this experiment ? Is it synthesis graphite or natural graphite ? How purify is your graphite ? Any suggestions for finding the best graphite to make graphene ?

@polymerscope6881

2 жыл бұрын

You can use commercial graphite of at least 98% purity. The size of the graphite is very important here. The smaller the graphite, the easier it is to separate into layers. This increases the purity of the graphene formed. The graphite average size should be a maximum of 20 microns.

By addition of 500mL of water you raised the temperature to 90C, how long did you stir at this temperature?

@polymerscope6881

10 ай бұрын

About 2 hours.

After the mixture is cooled that can we directly washed it using the membrane method?

@polymerscope6881

Жыл бұрын

It needs to be filtered and washed first because it is very acidic. When the pH is around 3-4, I recommend you to apply the filter membrane method.

@affizaladzmie4482

Жыл бұрын

Thank you 😁 quick question how much is the nabh4 you used for 500ml solution?

may i know the journal you are using ?

@polymerscope6881

2 жыл бұрын

U can find many paper in the literature about modified Hummers Methot.

cuanto sale el litro de grafeno amigo...

@polymerscope6881

Жыл бұрын

1 gram is 230 dollars, Bro...

Hi, I liked the way you washed GO. Was it a Filter paper or membrane? It was so strong that you could even scrap GO from it.

@polymerscope6881

Жыл бұрын

it was simple, cheap and rough Filter paper

@arnabarnab6218

Жыл бұрын

@@polymerscope6881 I am using centrifugal mc to seperate after wash, but it’s a very time consuming process. Your process seems super easy. I need to know the chemistry behind it, could you help please?

@polymerscope6881

Жыл бұрын

@@arnabarnab6218 Each step is shown in detail in the video. It's pretty simple. You can write what you do not understand.

@arnabarnab6218

Жыл бұрын

@@polymerscope6881 yeah, how the acid is washed away? Does it just diffuse from viscous graphene to water through the filter as it comes in contact with water?

Although the graphene oxide was successfully synthesized, I found that the color did not turn into light brown following the H2O2 addition. can you suggest why?

@vangkhach1308

Жыл бұрын

Well, from my personal experience, to gain the bright yellow-brown color of graphene oxide, you have to add distilled H2O2 slowly after the mixture is cooled (I cooled the glass in a ice bath for sure). If you add H2O2 30% quickly like in the video and at hot temperature (~90 oC), the color will alter.

@polymerscope6881

Жыл бұрын

Here, H2O2 is used to stop the reduction reaction. Because there is a possibility that the reaction will continue in the washing and purification stages after this reaction.

How much time will it take to become brown after adding KMnO4

@polymerscope6881

2 жыл бұрын

takes about 1 hour but the reaction takes 3 hours to complete

Why is the oil bath used in the reflux assembly stage?

@user-do1tm8rx4v

8 ай бұрын

Please Reply

@uzairdin8425

7 ай бұрын

@@user-do1tm8rx4v it is used because of the water present in the flask and water is the medium for the reaction to happen. Here heat is also supplied while stirring so to avoid evaporation of the water it is used... Note: I might be wrong

Which reference paper or article is used

@polymerscope6881

Жыл бұрын

This is modified Hummer's method. U can find many paper about it in the literature.

what kind of paper do you use?

@polymerscope6881

2 жыл бұрын

Rough filter paper was used.

Can i use small graphite pieces instead of graphite powder?

@glennedward2201

Жыл бұрын

No you would need to shave it off into powder.

@polymerscope6881

Жыл бұрын

It can happen if you are going to do the oxidation reaction at least 3 times.

Which filter paper is used in these process

@polymerscope6881

Жыл бұрын

type is not important. You can use simple, rough and cheap filter paper.

@NoahKainWhittington

Жыл бұрын

I just tried it with a couple of cheap plain coffee filters stacked on top of each other. It works great! The key is don't use graphite bellow 25 microns in size to avoid the produced graphene oxide from passing through the coffee filters.

How long did you stir the mixture at a low temperature (in an ice bath) following the KMnO4 addition before transferring to temperature 35 C? Was it until the color turned green, or was there no specific time required? And how long did you stir the mixture after adding water until the color turned brown before adding H2O2 to terminate the reaction?

@polymerscope6881

Жыл бұрын

30 minutes in an ice bath is sufficient. 1 hour is sufficient before adding H2O2.

@Ok-yy5zi

Жыл бұрын

@@polymerscope6881 thank you very much

How much GO can be obtained from 5 gm of graphite?

@polymerscope6881

Жыл бұрын

Its about 6 gram by this method. In filtration stage some of them lost. So, yield decreases.

Hello sir, may i know how many grams you use for Sodium Borohydride?

@polymerscope6881

Жыл бұрын

About 3 grams. You can also use hydrozine hydrate.

@th2oo22_ishfahanshah4

Жыл бұрын

@@polymerscope6881 Thank You Bro ✨

at 2:15 why the color has turned to brown when the graphite turns into GO? plz

@polymerscope6881

2 жыл бұрын

Because oxidation reaction started. After this process, oxidized graphite has turned to black due to reduction reaction by NaBH4.

@skeptic5470

2 жыл бұрын

@@polymerscope6881 Thank you for answering, one last thing, can filter paper maintain its form under strong acid condition?

@polymerscope6881

Жыл бұрын

@@skeptic5470 First of all, it is quite easy to apply and wash in a low pH environment. As the pH rises, the solution becomes viscous, making the filtration process difficult. Therefore, since the medium is not strongly acidic, filter paper can be used and not damaged.

Would you make tutorial making elastic carbon conductive paint water base?

@polymerscope6881

2 жыл бұрын

Why not later.

@HiluluxSon

2 жыл бұрын

@@polymerscope6881 thanks a lot Sir, I hope, you will add DC resistance measurement to.... Make my day brighter.

What is this used for?

@polymerscope6881

Жыл бұрын

To increase the properties of thermal conductivity, porosity, electrical conductivity, mechanical strength.

Sir any article link for this procedure?

@polymerscope6881

Жыл бұрын

This is synthesis rGO by this modified Hummers method. You can easily find many articles on the synthesis of rGO using sodium boron hydride in the literature.

@percybeatz

Жыл бұрын

However, I thought the modified Hummers method uses phosphoric acid instead of NaNO3?

I can make consuctive paint by crushing a hb pencil so what's your point

@polymerscope6881

10 ай бұрын

Yes but but it cannot be as conductive as this material.

@Buzzhumma

10 ай бұрын

@@polymerscope6881 yes I see. If you start with Ketjenblack EC-600JD that is highly consuctive can this process derive higher conductive graphene ?

at 5:20 it looks like something is on fire in the reflection from the flask

Can NaOH be used instead of NaSO3? and How many grams of NaBH4 did you use?

@polymerscope6881

2 жыл бұрын

You can't use it because it is not a strong base, too much NaSO3 will be consumed and it will create pollution. Approximately 4 grams of NaBH4 was used.

@elifgurcu2073

2 жыл бұрын

@@polymerscope6881 how long did the graphene oxide dry at what temperature in the oven in the final stage

@polymerscope6881

2 жыл бұрын

@@elifgurcu2073 24 hours at 50 C.

@elifgurcu2073

2 жыл бұрын

@@polymerscope6881 thank youu ☺️

@nematkhalil6205

Жыл бұрын

@@polymerscope6881 lot of thanks for you. I didn't find NaBH4 , will please inform me by another material.

Nice work interesting video but I think the Flash arc Method to produce graphene will more likely produce molded forms of graphene, which is what I am interested in. Molded graphene could make me a Trillionare.

@polymerscope6881

Жыл бұрын

Thank u, I hope.

@carrollsanders9376

Жыл бұрын

@@polymerscope6881 molded graphene would be one layer 3 dimensional Graphene, possibly attached to nanotubes, you could use it to build advanced Super Capacitors, Computers and micro engines. Imagine an electric car engine, the size of an apple with 500 hp. Or an electric Turbo fan engine more powerful than a modern Jet engine. The sky is the limit in nano carbon engineering.

@polymerscope6881

Жыл бұрын

@@carrollsanders9376 Yes you are right.

could you please reply what was that capsule you added at 4:02 and again at 4:51

@vinaybharadwaj5981

Жыл бұрын

It is a magnetic bead used for stirring

if you get it to be flexable, u can use it to build things with.

@polymerscope6881

10 ай бұрын

Absulately.

@magnuswootton6181

10 ай бұрын

@@polymerscope6881just something funny, being a smoker and seeing all this tar like stuff just makes me imagine my lungs, im gonna quit soon.

can you provide base article of this method

@polymerscope6881

2 жыл бұрын

U can find many articles about Modified Hummers method in the literature.

@shalinimoorthy4842

2 жыл бұрын

@@polymerscope6881 I am Asking for base paper u referred for this synthesis

@riturajsinghpanwar6470

Жыл бұрын

@@shalinimoorthy4842 use any paper of modified hummers method

Any one have any idea of synthesis of graphene composite?

@polymerscope6881

Жыл бұрын

U can product the electrically conductive hydrogel composites for wearable electronics

Vvce

Like magic! It seems a painstaking & labourious process, but perhaps repeatable, on a good day. ;) Now then, can you actually turn around & sell this graphene for $100,000/kg? Strong demand could make for a nice little cottage industry.

@polymerscope6881

Жыл бұрын

Thank you.

Im a big fan of graphene - how do you do this on a massive, therefor useful scale, then tho \(°•°)\?

@GQD538

Ай бұрын

Hi bro, My opinion, this processor has no centrifuge, so it's much longer time than normally process, in Taiwan I knew Angstrom already have a massive scaled up product, the customer I supposed to be Mitsubishi and Tesla. 😉

What is the point of oxidation just to reduce it back?

@polymerscope6881

Жыл бұрын

To obtain graphene from graphite, it is necessary to separate the graphite into layers. With oxidation, oxygen enters between the layers and the distance between the layers is opened and the oxygen is removed as a result of reduction.

@petevenuti7355

Жыл бұрын

@@polymerscope6881 so the purpose is purely for rapid and efficient exfoliation then . Would adding any side chains be any more or less difficult than adding it to benzine or other aromatic?

@franklingomez5311

Жыл бұрын

@Polymer Scope why didnt you go the route of mechanical exfoliation of the graphite?

@franknkanae4971

Жыл бұрын

@@polymerscope6881 Isn't this a bit theoritical how sure are we that we're that the reaction of oxygen with graphite separates the millions of layers

I have two questions. 1. Can I use the membrane washing method right away without filtering through filter paper at 2:39? 2. It did not turn brown when refluxed like 2:00 and distilled water was added. Also, yellow gas was generated. Can you tell me the cause? Sulfuric acid used 95 percent. please answer 🙏

Magnet

Can you please help me ? How to do all this properly? Your insta id?

@polymerscope6881

2 жыл бұрын

All the details are shown in this video. U can do this.

Nice video but wear the gloves bro loll

@polymerscope6881

Жыл бұрын

Thanks 👍

You know there is an easier less toxic way to exfoliate graphite? Chlorosulfonic acid dissolves graphite into graphene

@glennedward2201

Жыл бұрын

One step process using peroxyacetic acid and sulfuric acid.

@polymerscope6881

Жыл бұрын

YES.

Is always graphite 😂

@Tyler-sp2qs

5 ай бұрын

Simply judging by the fact that this person has an actual lab and equipment, I’m willing to bet they know more about it than you do

Thats what? Graphene Oxide? Everyone knows graphite is also conductive, so the testing proves nothing. Not sure i buy that any of these chemical methods work well. The reality is what percentage is possibly Graphene in that blob?

@polymerscope6881

Жыл бұрын

Dry graphite is not conductive. At least as in the video.😉

💉💉💉🤫⚰️

What kind of oil was used in Oil Bath?

@sitihawamatyaman1209

7 ай бұрын

silicon oil