What is the chemical effect of Graphene oxide cross-linking with metal ions?

I am exploring the effect of cross-linking between the graphene oxide nanosheets by mono and multivalent cations. How a metal ion reacts with GO nanosheets and what chemical changes it will...

08 September 2018 9,501 3 View

How can UV-Vis spectroscopy be used to calculate lateral dimension of 2D nanosheets?

I am trying to calculate the lateral dimensions of prepared graphene oxide nano-sheets dispersed in water, several articles have indicated that UV Vis can be used as a tool to do so . However, i...

01 February 2018 8,097 3 View

Is it possible that the surface functional groups of graphene oxide (GO) will be fully subsided due to the excessive ultrasonication?

I am studying the effect of extended ultrasonication on the synthesized graphene oxide nanosheets ( specially on the activity of surface oxy-functional groups ).

31 December 2017 8,987 6 View

How the polydispersity of graphene oxide nanosheets synthesized by hummer's process can be minimized ?

I am preparing the GO nanosheets using Hummer's process, but synthesized nanosheets are of very high polydispersity in terms of lateral dimensions. Is there any method by which the polydispersity...

11 December 2017 325 3 View

What are the suitable degassing conditions for Graphene Oxide and its derivative gels?

I have synthesized Graphene oxide based gels through cross-linking of GO nanosheets by metal ions of various valencies. What should be the optimum degassing conditions for its lyophilized form ?

10 November 2017 4,368 5 View

Is it possible to segregate graphene oxide nanosheets from a solution on the basis of their lateral dimensions?

I have an aqueous solution of exfoliated graphene oxide ( by ultrasonication) , Now if i wish to segregate these nanosheets on the basis of their lateral dimesions, how can i do so.?

09 October 2017 9,656 3 View

I'am trying to prepare an electrode from GO-electrolyte gels, but the gels are coming out in the electrolyte solution , how can i solve this issue.?

I am trying to make an CV electrode using my GO-Electrolyte based gels mounted on glassy carbon. But after few minutes the mounted gel is coming out into the electrolyte solution (KOH). How can i...

01 January 1970 8,551 0 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

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

1 nm thick MgO thin-film to be deposited on Si wafer using thermal evaporation. What will be the optimum deposition conditions?

Favourable conditions of base pressure, rate of deposition. Also, by which characterisation technique to be used to verify the thickness of the deposited film.

28 February 2021 3,640 3 View

Which database would give me this list of chemical components?

Dear colleagues: I would like to know if anyone knows of a database that gives me the parameters pH, K, K, Mg, P, C, N, Zn, Cu, Ni and Cd of common foods. I find a lot of information of proteins,...

26 February 2021 5,525 3 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Thermal reduction of graphene oxide.?

I am trying to reduce graphene oxide by thermally but I have no proper information regarding this. Can any one help me regarding the details about temperature and time for the reduction of...

23 February 2021 4,155 4 View

Is there an ideal incubation time of RGO-modified SPCE before subsequent use, i.e., electrochemical characterization or further modification?

I notice that upon washing and air-drying of my RGO/SPCE surface and characterizing again via DPV, the current response towards ferricyanide probe significantly decreases. My worry is that the...

22 February 2021 5,324 3 View

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22 February 2021 9,932 11 View

How can I measure the thickness of thin layers deposited on textured glass susbtrates?

I want to measure the thickness of aluminum oxide and titanium oxide layers deposited on textured glass substates. The layer thicknesses are typically below 100nm.

21 February 2021 5,465 4 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View