Is it possible to get high resistivity and low current values at higher electrolyte concentration?

During the electrolysis of water in the presence of KCl as electrolyte when I collect current and voltage data by oscilloscope, the current value decreases from 3A (at 100 ppm KCl concentration)...

11 December 2014 3,502 4 View

Is it possible to ppt out Cu(OH)2 at acidic pH (4-6)?

I'm synthesizing CuO at pH below neutral. In order to sort out mechanism when I see literature mostly CuO NPs are produced at higher pH by 2 step mechanism. First production of Cu(OH)2 and then...

11 December 2014 5,534 13 View

How do you precipitate CuOH2 out in an aqueous solution with a pH of 4-5?

What techniques can be used?

10 November 2014 8,699 1 View

How it is possible that I dissolve CuCl2.2H2O in DI water & add KOH at 50oC to get Cu ppt. But when i do XRD there is no peak for any copper compound?

I have repeated this experiment many times and at different pH from 7-11 but every time XRD show nothing. can any one please explain this for me ??

10 November 2014 4,106 8 View

Is there any method to remove monovalent cations before detection of DI-valent ions by Cation IC?

I am using cation IC with a pre-concentrator for the detection of copper ions in waste-water. My samples often have a large concentration of Na, NH4 and K which interferes with the Copper peak as...

09 October 2014 9,590 11 View

Can someone please help me to find a some classical simple method for the quantification of copper in water at ppb level ?

Currently im using Ion chromatography but due to some interferences from Na ions, which have very close retention time to that of copper so that i can't quantify the copper very accurately. So i...

09 October 2014 9,746 19 View

How should i prepare sample for XRD analysis. I want to characterize CuO (expecting) nanoparticles ?? Whats the standard procedure for that ??

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09 October 2014 3,594 1 View

Is their any simple method for determining the Free radicals (OH, O, H - individual detection/measurement) qualitatively or quantitatively in water ?

Thanks.

07 August 2014 6,403 7 View

How can I quantify the different Copper species present in water?

Is it possible to quantify the ionized Cu, Cu2O and Cu(OH)2 in a given water sample?

06 July 2014 5,500 17 View

What is the best material to carry out a radical reaction in the presence of metal ions?

I observe attachment of some particles (which I guess can be some form of metal which is present in solution) with the surface of glass reactor after the reaction. I don't know which material I...

05 June 2014 6,304 4 View

Guidelines for survey (question type) analysis?

Hi. Please tell me what guidelines should i need to follow for questionaries' type research work in India. It is not hospital based work, we are conduction basic institutional based qualitative...

03 March 2021 2,037 3 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

How to access MSCI KLD Stats and Sustainalytics?

Hello all, I'm currently working on my undergraduate thesis and I'm having difficulties trying to access KLD Stats and Sustainalytics because my campus Airlangga University and apparently other...

02 March 2021 8,525 1 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

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02 March 2021 3,060 3 View

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02 March 2021 932 1 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

How to calculate BREQ 3 questionnaire?

how to calculate BEHAVIOURAL REGULATION IN EXERCISE QUESTIONNAIRE BREQ 3 ,which contain 24 questions and each question has 5 answers (0- Strongly disagree , 1-disagree, 2- Neither agree nor...

02 March 2021 811 3 View

What is Nano technology with coronavirus helpe the human..and is it nano mterals removal of covid19?

I anwar by adsorption or reaction ..but it is either more method...

02 March 2021 4,811 2 View