How should a powder sample be scanned for reitveld refinement on later stage?

Does scan rate has any impact? what other parameters to consider while performing xrd ?

08 September 2018 6,805 2 View

How to subtract instrumental error from my XRD diffractogram, if I have standard silicon XRD data (READ DESCRIPTION BELOW) ?

I have standard data of Silicon sample and I want to subtract instrumental error (FWHM) from my sample. My sample and Silicon diffractogram are having peaks at different 2theta values (obvious). I...

07 August 2018 5,907 9 View

Can I calculate bandgap for YAG nanopowder?How to do it?

YAG is Yttrium Aluminium Garnet.

07 August 2018 4,662 8 View

What value of FWHM should I use to calculate crystallite size and strain by Scherrer formula in below mentioned situation?

I am comparing crystallite size and strain using Scherrer and Williamson hall method.But I have doubt in mind whether the value of FWHM I am using is correct. The Bragg peak width is a...

05 June 2018 7,575 13 View

Has anyone studied or collected data of Photoluminiscence (PL) spectra (emission and excitation) and PL decay for YAG(Y3Al5O12) nanoparticles?

Please share the data if you have.

05 June 2018 6,546 2 View

What is X-ray density?How to calculate x-ray density of nanoparticles?

please give papers/ references, if possible.

05 June 2018 4,236 4 View

How to tackle -ve Adjusted R-square value in Williamson hall plot?

I performed Willamson hall analysis of 4 smaples of YAG nanoparticles . I included top 9 peaks (same) in each case to get a linear fit line.However, in two samples adj R square value is positive...

05 June 2018 4,443 2 View

How to calculate crystallinity for cellulose 2 using xrd results and segal method?How to calculate peak intensities?Any way to do without software?

my xrd resembles Cellulose 2 structure OBTAINED FROM BAGASSE. Is there any other easy method to calculate crystalinity ?

05 June 2018 477 0 View

What interpretations can I make from EDS(Energy dispersive X-ray spectroscopy) results i.e. element weight percentage and atomic percentage?

here are the results (O -Oxygen, Al Aluminium ,Y- Yttrium)

04 May 2018 3,805 4 View

How can I calculate Energy Band gap for YAG nanoparticles from UV Vis absorbance spectroscopy results?

Please share the source of method for reference.

04 May 2018 1,184 3 View

Polymer composites suddenly solidifies?

I am making polymer composite by solvent mixing method. When I am trying to add filler solution in polymer solution it quickly get solidified. How to make them then uinform? It doesn't give time...

03 March 2021 7,540 4 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 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

How to polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

How to separate water from glycerol solvent in a solvent recovery vacuum distillation column?

I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...

01 March 2021 9,525 4 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Is anyone familiar with the cyclic compressive fatigue testing (BS EN 12697 - 25) ?

I would like to get more information on the cyclic compressive fatigue testing (BS EN 12697 - 25) which is typically done for bituminous material in pavement design. Any one can advise on the...

28 February 2021 2,004 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View