Anybody has an idea how do esterification on graphene oxide?

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How Do Length of Pylon and Rotor Disk Radius Impact Angular Frequency and Torsional Stiffness in Whirl Flutter Analysis for a 2 DOF Propeller System?

Actually, I'm having trouble implementing the plot of the flutter region for the whirl prop system with 2 DOF (Influences of structural damping and propeller—pivot point distance on whirl flutter...

21 July 2024 5,047 2 View

What is the correct way of calculating CO2 from private transportation and what is correct emission factor?

Hi, I have a question about emission factors for passenger cars based on the EMEP/EEA air pollutant emission inventory guidebook 2023, in the link that I used to calculate the CO2 emission per...

04 July 2024 1,766 2 View

What is the best book or guideline for fertilizer recommendations?

Would you please introduce a comprehensive book for fertilizer recommendation guidelines for agricultural and garden plants. In fact, I am looking for sources that express the amount of fertilizer...

25 June 2024 7,351 4 View

How can I disperse carbon nanotubes in ethanol?

I want to use ethanol as solvent. please explain me about every details of this method for CNTs desperation. Please explain me completely and accurately how can I disperse carbon nanotubes in...

08 May 2024 908 0 View

Hi every one. I need a relatively cheap antimicrobial agent, especially Staphylococcus aureus, resistant to methicillin, fda approve, non-toxic,...?

I need a relatively cheap antimicrobial agent, especially Staphylococcus aureus, resistant to methicillin, fda approve, non-toxic with aqueous solvent and without precipitation and turbidity...

29 April 2024 5,970 4 View

How can I purify and functionalize CNTs by sulfuric acid and nitric acid?

I need to purify and then functionalize the carbon nanotube to improve its properties. The functional group that I want to add to the carbon nanotube is carboxylic acid (COOH). I would like to...

05 April 2024 746 1 View

I made a water in oil in water emulsion. For having its FTIR spectrum, should I use it in its liquid form or I should dry it before FTIR test?

The operator of FTIR spectrometer says because of water and OH peak, you won't have a good result.

18 January 2024 4,794 3 View

What is the role of PVP (Polyvinylpyrrolidone), when we use it in phosphate buffer for antioxidant enzymes activity assays?

What is the role of PVP (Polyvinylpyrrolidone), when we use it in phosphate buffer for antioxidant enzymes activity assays? such as assay of SOD or POD activity in plant cell....

03 November 2023 7,026 3 View

What is the best stabilizer to prevent cell clumping for algae cell counting by hemocytometer?

31 October 2023 3,737 0 View

Host elements in a non-equimolar high entropy alloys?

What parameters can determine the host element or elements in a non-equimolar high entropy alloy? Considering that the element or elements have a higher atomic percentage in the composition, can...

11 September 2023 2,658 0 View

Why results of ROS flurescence are negative as there was no bacteria within?

Hello. I am working on ROS production of two systems: system A is cerium oxide and hydrogen peroxide, system B is cerium oxide nanoparticle, hydrogen peroxide and potassium bromide. I did some...

04 August 2024 5,974 3 View

Why aren't most metal oxides insoluble in water?

Why BaO (s) + H2O(l) ---> Ba 2+(aq) + 2 OH - (aq) if Oxygen loves owning all the electrons, why would it bind to hydrogen which competes with Oxygen for electron ownership more so than...

03 August 2024 5,392 1 View

Why chloride turns into chlorine gas in a Downs cell?

I imagine the battery drives the graphite into a carbocation, then chloride is oxidized to donate the electron to the carbocation, but what pushes the lost electrons of chloride to be shared...

03 August 2024 5,384 0 View

How to calculate the molar proportions of the oxides from the XRF analyses?

02 August 2024 2,565 2 View

Short Synthesis of Graphene Oxide from Natural Graphite Flakes?

I am in search of a modified Hummer's method, which can be used to synthesis graphene oxide within 6-8 hours. As I am a student it is not allowed for us to work after 5 in the laboratory. So I am...

01 August 2024 8,368 2 View

How can I separate graphene from amorphous carbon of similar particle sizes?

The starting material is a finely ground powder. Some particles contain more graphene than others.

30 July 2024 3,978 2 View

What is the solubility of Iron (+3) in Bismuth Oxide?

Dear all: I am modifying Bismuth Tungstate with Hematite (Fe2O3), so I would like to know about how much Iron(+3) can form a solid solution in a Bismuth Oxide matrix. Best wishes Marco

29 July 2024 2,163 1 View

Addition of EDTA during the synthesis of copper nanoparticles to prevent it from being oxidized?

I've attempted to use this method to synthesize copper nanoparticles. Copper nanoparticles can be synthesised using a variety of precursor materials. CuSO4, distilled water, NaOH, and EDTA are...

28 July 2024 8,027 3 View

Standard curve of H2O2?

Hi, I need to prepare a standard curve of H2O2 to evaluate the primary products of oxidation. H2O2 I have is 35%. How do I prepare a stock of H2O2 10 microlitere. If s.o has experience, I would be...

26 July 2024 3,460 2 View

Non -oxidizing metal binders?

I'm trying to sinter some Nb parts and I'm trying to find a binder which does not produce oxidative compounds when it decomposes.

25 July 2024 9,823 3 View