Why the intensity of phosphonium salts mass spectrum is comparably high?

While I was doing my research, I noted that phosphonium salts have more intense mass spectrum comparing to others (iodonium salts, for instance). Anyone has any interpretation about that? Best...

04 May 2017 1,728 0 View

How to practically find the Unretained Component and the Unretained Time (Void volume)?

Dear All,How to practically find Unretained Component and the Unretained Time?Shall we inject a sample which will not be retained by the column to determine what time an unretained sample will be...

31 December 2016 1,549 6 View

Separating a mixture of a couple of compounds of a chromatographic method using a bigger column?

07 August 2016 4,122 2 View

Nafion as a binder?

It is possible to use Nafion as a binder to tightly deposit nanoparticles, activated carbon for instance, onto a glassy carbon working electrode (modifying it) to be used for electrochemical...

02 March 2016 4,295 5 View

Adding an internal reference (Ferrocene, for instance)?

Why we need to add an internal reference (Ferrocene, for instance) when we study the electrochemical activity of an organic electroactive species using cyclic voltammetry?

11 December 2015 8,202 4 View

Who to properly use PTFE for binding activated carbon to glassy carbon electrode?

I am trying to modify my glassy carbon with activated carbon using polytetrafluoroethylene (PTFE) as a binder. I am usually using PTFE at concentration of 0.1%, anyone thinks that this...

11 December 2015 1,400 6 View

Sutter electrode holder leaking after applying positive pressure. How to fix?

I am using a Sutter electrode holder for my patch clamp experiments, but I'm having trouble keeping positive pressure inside my electrode due to a leak out of the back of the holder. I have added...

02 March 2021 5,829 1 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

Adherance of Polyaniline coating over stainless steel?

Is the electropolymerisation of polyaniline coating over stainless steel (SS) via Cyclic voltammetry technique is really adherant? Else how to improve the adhesion of the coating, whether any...

01 March 2021 8,220 2 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

POlymer+DMSO solution and moisture??

What could be the reason of moisture at the sides of Vial when I am preparing my polmyer+DMSO solution for membrane fabrication? What etiquettes I am possibly missing here?

28 February 2021 6,516 5 View

Why is my platinum counter electrode getting dirty during electrodeposition?

I am conducting anodic electrodeposition of MnO2 onto a stainless steel substrate, using a platinum strip as a counter electrode. This is done galvanostatically, with the current held between 5...

27 February 2021 1,829 3 View

How does charge on working electrode changes with rising potential?

During performing CV of a GCE or modified GCE, we rise the potential in the first half of the cycle and reduce it in reverse half. During the first half, what is the nature of charge on GCE or...

25 February 2021 7,994 3 View

How to troubleshoot Electrochromic Films and Electrochromic Devices?

I am trying to characterize an electrochromic system. The system uses ITO electrodes on glass, WO3 as the electrochromic film, and NiO as the ion storage layer. When I deposit NiO and WO3 and...

23 February 2021 9,592 2 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 does elongation affect the resistance of an electrode?

What are the testing rate for electrodes recommended by ASTM for cochlear implants. I am currently doing the 15mm/min elongatio testing.

22 February 2021 1,515 1 View