What does this phrase means, "0.5M in sulfuric group of poly(4-styrenesulfonic acid) (PSS)"?

I dont understand how to prepare the solution because i dont understand what does it mean, and i dont know the conc. of the PSS stock solution.

31 December 2018 2,181 1 View

Is there a free pogram to analyze the .pro file with profiling also from alpha step 500 as the main software is not free?

trying to analyze data at home while not in the lab

05 June 2018 8,276 0 View

What is an optimum parameter to C coat MO on glass substrate for SEM?

Using JEC 560 auto carbon coater 3KPa , and 30 s I think its a bit too long.

04 May 2018 9,555 2 View

Need advice to cut cross section of porous film on FTO for SEM. Sample came off when cut with glass cutter, no sample seen at edge of cut FTO. Help?

Cross section cut of porous sample /FTO scratch off sample from the edge of the FTO making it hard to check in SEM. Need help to cut it so the film stays on the edge of the cut.

31 December 2017 9,636 0 View

Can I freeze a CoPi/ metal oxide in N2 before cutting it cross section for SEM?

Planning to do it this way, but cannot help worrying about possible changes that will happen to Co-Pi coating.

31 December 2017 5,110 2 View

Do I mix the binder into ultra-sonicated powder immediately or wait for 2-3 hours to settle then mix supernatant with binder, and then stir it ?

Plan to make a paste but confused if we should wait for the sonicated powder to settle first and add binder to only the supernatant, or do we just add binder to the ultrasonicated powder...

07 August 2017 8,755 0 View

What paper have these ingredients: tungsten isopropoxide , acetic acid, ethanol and distilled water to synthesis WO3?

looking for a research paper synthesizing WO3 with the above ingredients.

05 June 2017 1,467 0 View

Can i add dispersant after precipitating metal oxide from addition of alkali and acid to metal oxide NP (chemical deagglomeration)?

31 December 2016 5,938 6 View

How to find concentration of solution based on solid content. The solution is made of synthesized powder suspended in liquid?

31 December 2016 7,328 2 View

Can 1- nonanol, acetyl acetone and triton X-100 be put in the same medium?

its for thin film paste making.

31 December 2016 7,819 5 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 is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 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

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

Have anyone checked before Cyclic voltammograms of intial ITO substrate and E-teck?

As a beginner in electrochemistry, I tried to obtain cyclic voltamograms of commercial anatase powder deposited on an ITO substrate or on Eteck. After several attempts, I noticed that my cyclic...

23 February 2021 3,175 3 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

Is that possible to do an impedance measurement without FRA module?

One of my colleagues said, "the impedance you can measure with the three electrodes and with the specific sequence varying the frequency" Is it possible to configure the potenciostat without the...

21 February 2021 418 2 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

How to Study a proton NMR of Graphene prepared by Electrochemical Exfoliation technique?

I performed a Proton NMR of graphene powder prepared by electrochemical exfoliation technique. It shows some peaks. But I can't understand it.

21 February 2021 8,947 3 View

How to predict the reaction pathway for electro organic synthesis?

Can anyone recommend some any software/models available that can predict substance reactivities and the reaction yield under a specific set of reaction conditions process and proposing pathways to...

17 February 2021 2,383 3 View