Abstract
The laser ablation synthesis in solution (LASiS) method has been widely utilized due to its significant prospects in laser microprocessing of nanomaterials. In this study, the LASiS method with the addition of different surfactant charges (cationic CTAB, nonionic TX-100, and anionic SDS) was used to produce Au NPs. An Nd:YAG laser system at 532 nm excitation with some synthetic parameters, including different laser fluences, ablation times, and surfactant concentrations was performed. The obtained Au NPs were characterized by UV-Vis spectroscopy, transmission electron microscopy, and zeta potential analyzer. The Au NPs exhibited the maximum absorption peak at around 520 nm for all samples. The color of Au NPs was changed from red to reddish by increasing the laser fluence. The surfactant charges also played different roles in the Au NPs’ growth during the synthesis process. The average sizes of Au NPs were found to be 8.5 nm, 5.5 nm, and 15.5 nm with the medium containing CTAB, TX-100, and SDS, respectively. Besides, the different surfactant charges induced different performances to protect Au NPs from agglomeration. Overall, the SDS and CTAB surfactants exhibited higher stability of the Au NPs compared to the Au NPs with TX-100 surfactant.
Highlights
Up to date, noble metal nanoparticles (NPs) especially silver (Ag) and gold (Au) have been widely explored and employed due to their distinct chemical, optical, and electronic properties [1]
The surfactants were added to avoid the agglomeration of Au NPs
The increase in the ablation time would increase the absorbance of Au NPs, indicating the increase in Au NPs’ concentration
Summary
Noble metal nanoparticles (NPs) especially silver (Ag) and gold (Au) have been widely explored and employed due to their distinct chemical, optical, and electronic properties [1]. LASiS method becomes more popular because of its fast, facile, cheap, and green production process of NPs in water or organic solvents [20,21] It has important benefits for biological applications where the NPs’ surface is not contaminated with residual ions deriving from reactants [22]. The influences of the surfactants on the size distribution and stability of the laser-ablated metal NPs have been entirely explored [11,24,26,29,30,31,32], very few studies were reported for the comparative study of the effects of surfactants with different charges along with the adjustment of different synthesis parameters. The characteristics of the obtained Au NPs using different surfactant charges were compared
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
