Effect of solvent types on the size distribution of gold nanoparticles measured by dynamic light seattering | |
| Author | Gajavelli, Naveen Kumar |
| Call Number | AIT RSPR no.ISE-20-03 |
| Subject(s) | Light--Scattering Nanoparticles Gold Alloys |
| Note | A research study submitted in partial fulfillment of the requirements for the degree of Master of Engineering in Nanotechnology, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Research studies project report ; no. ISE-20-03 |
| Abstract | Dynamic Light Scattering (DLS) or Photon Correlation Spectroscopy (PCS) is a nondestructive technique used to evaluate the size of submicron particles in a colloidal solution. In DLS, the size distribution function ofthe DLS system depends on the hydrodynamic diameter of particles, which always results in a size larger than the actual size of particles. Therefore, in this research, we tried to decrease the hydrodynamic size of the nanoparticles. A gold nanoparticle aqueous colloid prepared in water medium used as a model sample in this research. The size of the nanoparticles is investigated in DLS with the addition of organic solvents, namely methanol, ethanol, and isopropanol. Different volume concentrations of alcohols are added to the colloid and measured the effect of concentrations on the DLS size distribution. The results are correlated with the actual size of the gold nanoparticles obtained by using electron microscopy. At the end of this study, we concluded that this approach failed to improve the accuracy ofDLS measurement. In this study, the uncertainty calculations are performed for all the samples and we determined that we cannot rely on this measurement approach. |
| Year | 2020 |
| Corresponding Series Added Entry | Asian Institute of Technology. Research studies project report ; no. ISE-20-03 |
| Type | Research Study Project Report (RSPR) |
| School | School of Engineering and Technology (SET) |
| Department | Department of Industrial Systems Engineering (DISE) |
| Academic Program/FoS | Industrial Systems Engineering (ISE) |
| Chairperson(s) | Bora, Tanujjal ; |
| Examination Committee(s) | Hornyak, Gabriel Louis;Loc Thai Nguyen; |
| Scholarship Donor(s) | Asian Institute of Technology Fellowship; |
| Degree | Research report (M. Eng.) - Asian Institute of Technology, 2020 |