How can I estimate quantitatively the doping level of graphene by Raman method?

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In graphene diazonium functionalization, why is tetrabutylammonium hexafluorophosphatis needed?

A lot of articles describe graphene functionalization by Nitrobenzene diazonium tetraflouroborate solution in acetonitrlie. Most of the authors also add tetrabutylammonium hexafluorophosphatis but...

05 June 2014 3,647 12 View

What exactly happens if one dissolves the 4-nitrobenzindiazonium BF4 in water?

Many thanks

04 May 2014 9,091 1 View

Does anybody know a simple method of graphene functionalization with some kind of organic functional groups?

I need to create sp3 impurities on graphene lattice so I have to functionalize it somehow by covalently attached functional groups. I am looking for a method to attach big functional groups, not...

04 May 2014 4,728 12 View

Does anybody know the mechanism of thermal decomposition of N-Methyl-pyrrolidone (NMP or Pharmasolve)?

I am looking for a mechanism of thermal decomposition of NMP and wondering whether free radical can be formed during the heating of NMP. Also, I heated graphite powder dissolved in NMP for 1 h at...

04 May 2014 3,005 7 View

Method space charge limited current

I have to make a report about Space Charge Limited Current, but i can not find full info about it. I need deep understanding, but the book where I found about SCLC is not available for download. I...

10 November 2012 2,590 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 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

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

How to calculate Z (the number of molecules in a unit cell) for calculating theoretical density?

I am trying to calculate the theoretical density of my ceramics materials. I use the formula below to calculate the theoretical density: Theoretical density = (Molecular weight x No. of molecules...

24 February 2021 3,823 2 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 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

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

What is the reason film thickness increased?

what is the reason film thickness increased when increased doping concentrations give some reasons The measured film thickness is 156, 282, 394, 548 and 681 nm for 0, 1.5, 2.5, 3.5, and 4.5 wt....

17 February 2021 8,987 5 View

What is the best substrate for exfoliating few layers of hexagonal boron nitride (hBN) using traditional scotch tape method?

Unlike graphene, it is usually very difficult to exfoliate few layers (~10 nm thick) of hBN on SiO2 substrate due to lip-lip interaction at the edges. Au substrates have been proven very useful...

16 February 2021 2,635 2 View