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Questions related from Vijay Kumar
I have synthesized silver nanoparticles form green route. While washing the glassware, the nanoparticle are released which must be entering into the environment. I want to know that is there any...
01 January 2019 2,000 14 View
Hello, This is Dr. Vijay, I am want to design a sensor for different heavy metal ions. I want to know the basic idea behind it. Thank you.
12 December 2018 5,019 0 View
I have synthesized gold nanoparticles from aqueous leaf extract of Croton bonplandianum. The zeta potential result showed it is negatively charged. Please explain the exact reason of this...
06 June 2018 4,299 9 View
I have prepared carbon quantum dots by taking 200 mg precursor in 200 mL distilled water. Its very tough to precipitate the carbon quantum dots by centrifugation. It is in solution form. How can I...
01 January 2018 3,757 4 View
Hello all,I have synthesized the AuNPs using 1.2 mM auric chloride salt. How can I know its concentration in suspension form?
07 July 2017 3,941 5 View
The green synthesis of gold nanoparticles was investigated using different metal ion concentration at a fixed inoculum dose and reaction incubation time. It was observed that the size of the...
12 December 2016 887 8 View
I have synthesized AgNPs with average size 14 nm and characterized it through AFM analysis. I have got the 2D, 3D images and roughness profile. The average roughness of the sample was found to be...
10 October 2016 8,270 2 View
The composite of Ag-rGO-PANI was prepared and characterized through XRD technique. When the XRD spectra of rGO and PANI were taken separately, a characteristic band appeared but these did not...
09 September 2016 7,346 7 View
The colorimetric detection of Iron (III) was carried out using AgNPs synthesized by plant extract. Different concentrations of Iron (III) were added into 1 mL solution of AgNPs and the change in...
09 September 2016 6,695 5 View
I have synthesized the AgNPs using plant extract and annealed it at 300 degree Celsius. The pre annealed sample was also characterized by XRDNow what differences could be seen?
06 June 2016 3,501 16 View
I am investigating the peroxidase like activity of green synthesized gold nanoparticles. While optimizing the pH it was observed that the peroxidase like activity of the gold nanoparticles was...
01 January 1970 9,623 0 View
I have synthesized AuNPs using different HAuCl3.xH2O (0.4 mM, 0.8 mM, 1.2 mM, 1.6 mM, 2.0 mM, 2.4 mM, 2.8 mM, and 3.2 mM) of different sizes.It was observed that when the concentration of...
01 January 1970 2,144 5 View
Hello alI..!I have synthesized gold nanoparticles using leaf extract and observed the formation of different shaped gold nanoparticles. I want to know the exact reason for the formation of such...
01 January 1970 2,186 6 View
I have performed the green synthesis of AuNPs using aqueous leaf extract. It was noticed that by using same amount of leaf extract the different metal ion produced mixture of different shaped and...
01 January 1970 296 2 View