What is the reasone of color change of gold couter electrode in KCl/K3[Fe(CN)6] solution?

By taking CV of KCl/K3[Fe(CN)6] solution in -0.2-0.5V window at SPE (WE&RE: Gold, CE: Ag/AgCl) we see blue precipitate and color change of CE. What is the reason?

06 July 2016 2,679 6 View

How do I use the IR for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results?What information can I get from this analysis?What software would help me to...

07 August 2015 7,231 6 View

How do I use the UV/Vis for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results?What information can I get from this analysis?What software would help me to...

07 August 2015 6,694 2 View

How do I use the Differential Scanning Calorimetry (DSC) for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results?What information can I get from this analysis?What software would help me to...

07 August 2015 6,482 2 View

How do I use the SEM for analyzing nanomaterials?

In this analysis: What would be considered for the sample preparation? What do I have to follow to interpret the results? What information can I get from this analysis? What software would help me...

07 August 2015 553 1 View

How do I use the XRF for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results?What information can I get from this analysis?What software would help me to...

07 August 2015 7,852 0 View

How do I use the EDS (or EDX) for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results?What information can I get from this analysis?What software would help me to...

07 August 2015 6,718 10 View

How do I use the STM for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results? What information can I get from this analysis? What software would help me...

07 August 2015 4,975 1 View

How do I use the TEM for analyzing nanomaterials?

In this analysis:What would be considered for the sample preparation?What do I have to follow to interpret the results? What information can I get from this analysis? What software would help me...

07 August 2015 9,971 0 View

What book is the best book on the philosophy of chemistry for high school and undergraduate students. ?

Thanks

07 August 2015 4,868 0 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

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

How does the injection volume impact LLOQ and ULOQ in regression analysis (LC-MSMS)?

Hello, I have run into an issue that has sparkled a debate at work: is the LLOQ/ULOQ impacted by injection volume under the following circumstances: 1) Same dilution factor of all samples 2)...

23 February 2021 9,159 3 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

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

Using the Pfaffl method: Is it possible that the ratio of the calibrator does not equal 1?

Hi all, I have a question regarding calculations using the Pfaffl method. I have 3 groups per experiment: 1 control group (calibrator) and 2 treatment groups with 6 to 7 biological repeats per...

19 February 2021 8,351 2 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

XRPD Quantification - Building a calibration curve of drug excipient?

I am aiming to utilise XRPD to quantify a drug excipient within a drug product and have been having a little trouble building the calibration curve to allow for this quantification up until this...

10 February 2021 6,145 3 View

Selecting referencing electrodes for electrochemical experiment?

I have several questions, What reference electrodes is commonly used for aqueous electrochemical systems? What reference electrodes is commonly used for electrochemical systems which used...

06 February 2021 6,389 5 View

What are the factors on which exchange current density of an electrode depends, and how can they be predicted?

While surface roughness is an obvious factor, this is not what is exactly asked. Rather, periodic variation of exchange current density (of an electrode) with solution chemistry (of electrolyte)...

30 January 2021 4,886 5 View