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Questions related from Sanjeev Gupta
Please explain in bulk TiO2 and TiO2-x, I want to know EPR recorded at room temperature no signal observed for rutile phase but at 77 K a sharp signal observed that is explained on basis of...
07 July 2018 3,460 0 View
PEO-PPO-PEO I am confused as the ratio I got i different paers are different as Pluronic F-127 100-65-100 and some where it is written 101-56-101 I need to know about F-108 as written 133-49-133...
12 December 2017 1,738 0 View
If the XRD data is recorded at Wavelength such as =0.688 Angstrom and I want to do refine the parmeter of XRD pattern for that purpose I need CIF file from the data. How I can choose the file...
12 December 2017 5,467 5 View
If I know the refined cell parameters of XRD pattern with significant digit like a= 3.789456(12) and 9.3345(5) how do I multiply them to get correct value of Volume= a2 c (angstrom) with...
08 August 2017 2,592 8 View
I am having a mixed phase system I want to index a ring pattern of electron diffraction pattern but I am unable to find the value matching. please any one explain. I am attaching here JCPDS of...
08 August 2017 3,347 4 View
If 3.78943 and error is 0.000768 so the correct way to present the lattice parameter 3.789(7)
06 June 2017 1,915 4 View
Farbe centres in lattice, I need literature to know how theyformed in lattice and how color changed occurs.
05 May 2017 7,689 0 View
Different sample will absorb different portion of UV,visible and IR portion, Is that possible to calculate the percentage of each portion, how much UV light in (%) is absorbed or visible light or...
04 April 2017 472 3 View
Please find the attached figure and paper Why when we doped Yb broad peak is coming not intense peaks are coming which sites Yb is going to occupied it size is too bigger as compare to tiania...
03 March 2017 3,590 4 View
Why small angle XRD pattern shows peaks for hexagonal and cubic symmetric structure like SBA-15, MCM-41. Reflection at 100, 110 and 200
02 February 2017 8,128 1 View
If you will get hysteresis loop in VSM plot how we can calculate the total no. of spin which are ferromagnetic although i know the value of wt of my sample and saturation
12 December 2016 7,617 0 View
I want to know why choosing dichloromethane or toulene like solvent were beneficial for used as a solvent , it is just to control hydrolysis rate or interaction with moisture in atmosphere or any...
11 November 2016 7,099 0 View
Kindly, please help to send anyone it should not be synthesized at any pressure if possible Name and formula Reference code: 98-004-7598 Compound name: Titanium Oxide - (b) Chemical name: Titanium...
08 August 2016 2,675 5 View
Crystallite size coming from XRD is 14 nm but from TEM if shape is nano rods than how can I compare the crystallite size for both is it possible?
02 February 2016 4,567 5 View
My multi phase system contains Anatase .brookite and rutile so peaks are overlapping in that case how I can use scherrer equation to get crystallite size? Is that I have to deconvulate the first...
02 February 2016 3,246 4 View
I am using two software like MAUD and Full Prof suite if I will take simple XRD data not like neutron or synchrotron XRD data for TiO2 (White) and Reduced TiO2-x whether it is reliable to do...
02 February 2016 7,590 6 View
what Qc value gives like for WO3 = 0.0493 what it is meant?
11 November 2015 1,990 0 View
If structure like Titania having crystalline core and disordered layer or amorphous with specific surface area get decrease from 50 m2/g to 30 m2/g. definetly its particle size will increase but...
11 November 2015 3,279 2 View
How to calculate crystallite size by xrd ?
11 November 2015 9,319 3 View
In my TiO2 all three phases are present. Can any one help to suggest how to refine all three phases (Anatase, Brookite and Rutile) where anatase is present in major ratio but on loading all cif...
09 September 2015 317 6 View
If I will able to do refinement using MAUD that refined images can we able to get in text to plot in ORIGIN ? How to do that
09 September 2015 635 3 View
On Yaxis Which way is appropriate to denote Fluorescence Intensity (a.u.) or Fluorescence Intensity only because unit get cancelled due to ratio of intensity so what is the significance of that...
08 August 2015 3,917 0 View
Should I like to write like Wang et al. (First author) reported the aluminium reduction method to prepare Black titania. or Huang et al.(Corresponding author) reported the aluminium reduction...
07 July 2015 8,159 1 View
that Z is no. of atom in a unit Cell or denoting scale factor or it is something else. I am using GSAS Software which is free available Please tell me, I am attaching one file I have done the...
02 February 2015 8,825 10 View
During H2 production photocatalytically P-25 TiO2 gives almost 3 times more hydrogen than pure anatase Hombikat TiO2 having a surface area of 300 m2/g as compared to 50 m2/g for P-25. Even surface...
12 December 2014 7,339 4 View
Structures like NaTaO3 & InVO4 are stable and compact. Is that the reason doping or creating vacancy is difficult?
12 December 2014 5,725 5 View
Generally we will say if less than 1% hetroatom is doped than its a doping but if it is more than 1% than its a substituion and its behaviour will change. But, if you calculate XRF it will not...
11 November 2014 640 4 View
In some paper they also plot (ahv)2 Vs hv for TiO2 but is indirect semiconductor so plot should be (ahv)1/2 Vs hv . I am attaching one file two slopes are needed or one tangent is extrapolated to...
10 October 2014 3,302 2 View
what are the refined parameters of commercially available basolite z1200? Please send me any useful article to understand all this as soon as possible. several different space group ZIF-8 files...
01 January 1970 7,086 1 View
Recently, Black titania are reported in literature , We know Ti3+ ion is blue in colour and atlast only Ti3+ ion will generate in TiO2 lattice so how this originate Black colour. However...
01 January 1970 5,550 3 View
I found signal get quenched in H-TiO2 blue in colour. What coud be reason signal get quenched on going to low temperature? I would like to know when signal can be quenched or signal intensity get...
01 January 1970 1,609 2 View
