Effect of Capping Agent on the Morphology, Size and Optical Properties of In2O3 Nanoparticles

Abstract

The Indium Oxide (In 2 O 3 ) nanoparticles were synthesized through Acacia gum mediated method with the surfactants CTAB (Cetyl Trimethyl Ammonium Bromide) and SDBS (Sodium Docecyl Benzene Sulfonate). The characterization of the synthesized In 2 O 3 nanoparticles was carried out by XRD, FTIR, RAMAN, TEM, SEM, EDAX, UV-Vis and PL techniques. TG-DTA analysis was performed to know the calcination temperature of In 2 O 3 nanoparticles. XRD analysis confirmed the crystalline nature of the synthesized In 2 O 3 nanoparticles. The morphology and chemical composition were characterized by TEM, SEM and EDAX respectively. It was observed that morphology and size of synthesized nanoparticles measured by TEM and SEM analysis were dependent on the type of capping agent (surfactant) used. Raman and UV-Vis spectral analysis confirmed that the band gap value of CTAB capped In 2 O 3 particles were larger than the SDBS capped In 2 O 3 particles. FTIR analysis indicated that the bands were stretched in In 2 O 3 particles capped by SDBS than by CTAB. From the photoluminescence studies (PL technique), a blue shift in the emission peaks of CTAB and SDBS capped In 2 O 3 particles was observed that indicates larger optical band gap than the bulk.

Experimental Investigation of Electrical Conductivity of Ethylene Glycol Containing Indium Oxide Nanoparticles

“…The highest increase in electrical conductivity for In 2 O 3 -EG nanofluids was achieved for 0.0081 vol.% at temperature of 333.15 K and it was 272 times higher than that in case of pure ethylene glycol at 298.15 K. Enhancement in electrical conductivity for indium oxide nanofluids with 1% volume concentration and various content of PVP as surfactant was also reported by Latha et al [13]. They observed increase in electrical conductivity with increasing content of polymer (PVP) at room temperature.…”

Pleurotus sajor-caju-Mediated Synthesis of Silver and Gold Nanoparticles Active against Colon Cancer Cell Lines: A New Era of Herbonanoceutics

“…A SEM instrument was employed to analyse the surface structure of the nanoparticles that were formed. From Figure 5 A it is evident that Ag NPs and Au NPs were spherical and P. sajor-caju extract was aggregated and capped over the silver and gold nanoparticles [ 12 ]. The TEM images illustrated that the Ag NPs are crystalline and spherical having an average diameter of 15–20 nm ( Figure 5 B).…”

“…The surface morphology of the respective Ag NPs and Au NPs capped P. sajor-caju were analysed using SEM, and the images are presented in Figure 5 A. The images show that the NPs were spherical in shape [ 12 ]. The micrographs of the two biosynthesized NPs demonstrated their dispersal, spherical and smaller sized structure ( Figure 5 B,C).…”

Dynamic Viscosity of Indium Oxide-Ethylene Glycol (In2O3-EG) Nanofluids: An Experimental Investigation

“…According to the best knowledge of the authors, there is only one study on thermophysical properties of indium oxide (In 2 O 3 )-ethylene glycol (EG) nanofluids. Latha et al [12] presented a paper in which thermal conductivity, density, viscosity, specific gravity, electrical conductivity, and optical properties were examined. They prepared few types of samples containing one volume fraction of nanoparticles (1 vol.%) with various fractions of surfactant (polyvinylpyrrolidone -PVP).…”