Vaibhav Rana

8 Questions 6 Answers 0 Followers

Questions related from Vaibhav Rana

At what temperature should I calcine my copecipitated sample to obtain Au/Al2O3 such that Al2O3 is in GAMMA form?

I am preparing Au/Al2O3 catalyst through coprecipitation. I calcined the dried precipitate at 400 degree C for 4 hours, but the XRD of the calcined sample did not showed presence of gamma Alumina....

03 March 2019 7,833 6 View

How can I prepare Au/Al2O3 catalyst through coprecipitation method?

I need to prepare Au/Al2O3 catalyst through coprecipitation method. What synthesis process should I follow to get the most effective catalyst?

02 February 2019 6,171 4 View

How can I synthesis gold nanoparticles of variable sizes but less than 10nm through a tunable method?

I need to do a study of effect of gold nanoparticles size on its catalytic properties. I am preparing gold supported on alumina catalyst by colloidal deposition method and need to know a size...

01 January 2019 2,524 3 View

How to avoid fouling of gold nanoparticles on ptfe tube surface?

I am synthesising gold nanoparticles in a PTFE tubular reactor. How can I minimize fouling of nanoparticles on the surface of the reactor?

07 July 2018 5,871 4 View

How to develope an oscillatory flow using a peristeltic pump?

I want to study the effect of oscillatory flow on the synthesis of gold nanoparticles in a tubular reactor. Is there any way to create such flow using a peristaltic pump?

07 July 2018 7,797 1 View

How to do Turkevich method synthesis when HAuCl4 and Na3citrate are mixed before heating i.e at room temperature?

We're designing a flow reactor for Turkevich method of gold nanopaticles (AuNP) synthesis. It's important for us to mix the reactants at normal temperature at then heat the mixture. We did a batch...

02 February 2018 6,364 0 View

How to synthesis gold nanoparticles through Turkevich method when HAuCl4 and Na3citrate are mixed before heating?

We are using a mixture of HAuCl4 and Na3citrate (mixed at room temperature) to carry out Turkevich method for AuNp synthesis but we are not getting result. What can we do?

02 February 2018 7,716 3 View

Maintaing constant pH during the gold nanoparticles synthesis.

What buffer should I use to maintain a constant 9 and 3 pH during the gold nanoparticles synthesis? I am using Ascorbic Acid and PVP as reducing and caping agent respectively.

01 January 1970 9,250 11 View