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

More Vaibhav Rana's questions See All

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....

02 March 2019 7,785 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?

01 February 2019 6,118 4 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?

06 July 2018 5,826 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?

06 July 2018 7,765 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...

01 February 2018 6,334 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?

01 February 2018 7,656 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 9,217 11 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 polymerize TEOS?

I want to polymerize TEOS on a surface. I know that NH4OH is a preferred catalyst and an alcoholic solvent should be used .But I can not find certain amounts of each material to use. Does any one...

02 March 2021 1,404 6 View

Do I need to strip the PVDF membrane before staining it with colloidal gold?

Dear Colleagues, After running Western blot on PVDF membrane and detection using ECL, I would like to stain my PVDF with colloidal gold to be able to allign the ECL image with total proteins on...

02 March 2021 7,829 3 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Can chitosan alone can act as a reducing agent for Cu(0) nanoparticle sythesis?

[Synthesizing Cu nanoparticles without using chemical reductants]

01 March 2021 8,359 1 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

What is the state of the drug inside solid lipid nanoparticles (SLNs)?

I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...

01 March 2021 3,703 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Distribution of particles in metal matrix?

How would define the "good" and "poor" distribution of particles within the matrix. Is there a quantitative solution to assess the distribution of the particles, which then having denotation of...

28 February 2021 7,397 8 View

Muhammad Jawad

Follow Turkevich method for synthesis of gold nanoparticles. size will be about 20 nm by this method.

Saeid Asghari

Dear Vaibhav Rana

Besides the Turkevich method, poylphenol compounds can also be used as the stabilizers. It would be helpful to take a look at these articles:

Article One-step, size-controlled synthesis of gold nanoparticles at...

Article Size Controlled Synthesis of Gold Nanoparticles using Photoc...

Article Seeding Growth for Size Control of 5−40 nm Diameter Gold Nanoparticles

Yuri Mirgorod

There is no tunable method for obtaining gold nanoparticles. You need to use alumina with different pores and synthesize nanoparticles in these pores using the Turkevich method as you have been advised.