Which raman shift do C-H and H-H bonds have? There is diffence in raman shift of C-H bonds in organics like CH4 and in inorganics like graphite?
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Hi everyone!How can How can i explain the Raman spectra of carbon material when D peak exists, while 2D peak does not. Could there be a reverse case when in Raman spectra we observe the overtone...
08 September 2017 1,473 4 View
As been showed that NMR 13C relaxation time is shorter of 3 oders than one in macro-bulk diamond. The reason for this shortening is attributed to the interaction of paramagnetic centers observed...
03 April 2017 8,854 0 View
We are working with EPR spectrometer Radio-pan H102. We use ruby in the role of reference. If we determine well regime of registration of absorption signal for ruby, then for studied sample, we...
31 December 2016 1,489 2 View
For instance, there is a change in lattice parameter of silicon crystal doped with boron atoms. How can estimate the lattice parameter of silicon crystal in this case?. Is there any formula for...
07 August 2016 9,272 0 View
What information i can get from Raman spectra if the sample is heterogeneous material, like detonation nanodiamond powder? We can get from RS spectra, for exaple, relative concentrations of...
01 February 2016 7,922 12 View
The g-factor for free electron is 2,002319. what mechanisms give the shift in g-factor. We have for Diamond the g-factor is 2,0027 for broken bond of C-C. For material from graphite (with...
01 February 2016 8,158 3 View
What is the popular surface defect of diamond? I saw in some papers saying about hydrogenated and oxygenated surface diamond, but these are theoretical. Can you recommend me to any experimental...
10 November 2015 5,220 0 View
We study detonation nanodiamond by RS. Samples were recieved in form of powder. Then we press this powder under high pressure 8GPa and T=1800C and got compact detonation nanodiamonds, that then...
09 October 2015 6,283 6 View
Hi there! In diamond sample with dislocations we saw lateral lines of line(220). These lines are not symmetry by intensity ( for three lines- lateral-central-lateral: 1012-2292-602) and position...
08 September 2015 1,483 4 View
Approximate concentrations are require in compared with the WHO permissible limts
11 August 2024 2,723 1 View
Hey there, As a synthetic chemist delving into theoretical calculations for my imidazolium-based organic molecules, I would greatly appreciate any guidance on the appropriate input instructions...
09 August 2024 5,444 7 View
Hi all, my experimental XPS results shown that my C3N5 sample consists of N-H bond, hence in this case I should incorporate the N-H bond into my DFT modelling. However, I do notice several papers...
07 August 2024 8,414 2 View
Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.
07 August 2024 8,782 3 View
I have been using paraffin, but the deposited ZnO still detach from electrode. What is the best binder to modify graphite paste electrode with ZnO nanoparticles?
03 August 2024 4,624 3 View
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
I used humic acid at 0.044 g/kg soil in my pot experiment. But finally, I have to recommend kg/ha. Each pot's soil weight was 11 kg. What is the solution?
02 August 2024 7,186 6 View
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
The starting material is a finely ground powder. Some particles contain more graphene than others.
30 July 2024 3,978 2 View
Hi everyone, I'd like to better separate two close peaks coming from a bioconversion sample, I'm currently using a C18 KromaPhase 4,6mm Ø.I. SCHARLAU, particle size (µm): 10, pore size (Å): 100,...
30 July 2024 435 3 View