Olawale Oloye

Do a general diagnostic using dummy cell.

It looks like you set your instrument to a very low sensitivity

Yurii V Geletii

Yes, sensitivity is low.

I intentionally set it to a low value, so that i may be able to see the voltamogram as the measurements are taken. Moreover, i seldom get an overflow at very low sensitivity.

Thanks

Just try to set a different sensitivity and see what happens. Surely, always check the contacts.

Yurii V Geletii

am actually in the lab, i have tried a different sensitivity.

The cables look good, moreover, i have spare. I have alternated them.

I suppose there should be a way to get rid of the noise.

Have you achieved the noise decrease at different sensitivity setting?

1. Check the current stability of the socket you are using.

2. Vibrations from other nearby instruments, instrument is not close to door.

3. Try to perform the experiment in the Faraday cage if possible.

4. Go for more cycles.

Try to increase the sample interval and sensitivity to 0.005 it might help (I remember something regarding the ratio between scan rate and sample interval)

hello.

please answer my question

if I have to use powder of metal to electrolyte for electrolysis such that what do i do?

To Yas Bam

Plz, open a new discussion related to your question. Clearly formulate your question. I don't understand what you are asking about.

Hi,

I agree with previous answers. Apart from this, you have to check the connections carefully. I don't know the system (electrode / connections). For example, if working with carbon paste electrodes, the paste has to be thoroughly compacted, if clips for connections are slightly corroded they have to be polished... to ensure proper connection.

Olawale Oloye

have you resolved your problem? I guess you are obliged to keep us informed.

Yurii V Geletii Naama Gluz Rayees Ahmad Rather Sri Lakshmi M.Teresa Fernández-Abedul

Good day colleagues,

Apologies for not updating on the discussion board, It has been hectic in the lab. I have tried some of the suggestions but the problem still persist. However, we planning to get a Faraday cage and experiment with it. I do observe that N2 evolution could be responsible for the noise.

My conclusion is that so many factors could be responsible for the noise and some are manageable. I do observed that some published data have noise in them.

Thanks so much for all your contribution

All suggestions are good as expected....You can the change the electrolyte concerntration (nearly 6M) & use KOH instead of NaOH. I never faced problem like this with KOH. Just try for your solution. There may several problems like:

i. Proper contacts between the electrodes, its get rust with extensive use.

ii. Instrument may not get proper voltage from the source, configure it.

iii. Vary the sensitivity.