Graphene and functional graphene have different particle sizes, but is it okay to make a nanocomposite and compare it at the same concentration?

I did an experiment of making functionalized graphene oxide and dried it in a vacuum oven, and ground f-GO using mortar and pestle. After that, I will make two types of nanocomposites...

10 November 2019 7,182 5 View

How long do you grind functionalized graphene oxide using mortar and pestle to make it powder form?

I did an experiment of making functionalized graphene oxide and dried it in a vacuum oven after centrifugation, and ground f-GO using mortar and pestle. But, after grinding, it still didn't...

10 November 2019 6,931 3 View

How can I distinguish Ester bond from -COOH in FT-IR?

I synthesized a silica-functionalized graphene through esterification. I found an ester peak(~1735 cm-1) in the functionalized GO, however, I also found the same peak in the original GO. Then,...

08 September 2019 1,188 3 View

How do you determine the proper amount of material when you try to functionalize Graphene Oxide a lot at once?

I want to functionalize graphene oxide using esterification. When I searched the papers about this kind of reaction, I found that many authors synthesized ~100 mg of graphene oxide. However, I...

07 August 2019 2,141 3 View

How can apply the grafting method on carbon fiber to other carbon material?

I found a paper about grafting silica nanomaterial to carbon fiber. Shortly, 1) CF-COOH is made. 2) With a reflux reaction (at 50C, 4h), CF-COOH reacts with solvent including silica nanomaterial....

05 June 2019 144 3 View

How can I dry a functionalized graphene oxide in a vacuum oven after centrifugation properly?

I want to know the procedure of drying a functionalized graphnee oxide in a vacuum oven after centrifugation.. I don't have a freeze-dryer, so I try to dry it using the vacuum oven. However, the...

05 June 2019 2,683 3 View

Can I apply the grafting technique to other material (ex. carbon fiber -> CNT)??

For example, I read a paper about 'grafting A(as nano particle) onto carbon fiber' Can I apply this technology to grafting A onto carbon nanotube? I need your advice.. thank you

02 March 2019 2,865 2 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 View

Is there any test to determine the cardiovascular risk of patients with obesity? from the perspective of obesity?

We found tests to determine cardiovascular risk taking into account lipid profile, blood pressure, age, history of diabetes, other laboratories. But when weight is involved, there is a paradox. I...

02 March 2021 6,036 1 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What SPSS analysis should I run with one IV (with two levels) and two DVs?

Hi, I am trying to figure out which test would be most appropriate to run for the following question: Is there a difference in task blood pressure between smokers and non-smokers? There are two...

01 March 2021 8,235 2 View