Keywords : Nanostructure
Rod-like Nano-structures of Copper Oxide Prepared by Chemical Bath Deposition
Engineering and Technology Journal,
2022, Volume 40, Issue 4, Pages 573-581
DOI:
10.30684/etj.v40i4.2089

Spectroscopy and Formation of Carbon Nitride by Pulse Laser Ablation in Liquid of Graphite Target
Engineering and Technology Journal,
2016, Volume 34, Issue 1, Pages 35-45
In this work carbon nitride was synthesized by pulsed laser ablation of graphite in ammonium solution. Fourier Transform Infrared Spectroscopy (FTIR), UV-Visible Spectrophotometer and Transmission Electron Microscopy (TEM) were used to study the bonding, absorption, size and morphology of the carbon nitride nanoparticles. The FTIR absorption peak at 2121.6, 1631.7, 1384 cm-1 stretching vibration bond, it is inferred that the C ≡ N, C = N and C-N, respectively. Bonds suggested the formation carbon nitride nanoparticles. UV absorption peaks coincide with the electronic transitions corresponding to formation carbon nitride C3N4 and monocyanopolyynes. The TEM image showed the aggregation of the carbon nitride nanoparticles with size ranges from (4 to 83.3 nm); the Leaf- like structure is shown in the structure of carbon nitride suspension.
The Influence of Substrate Temperature on In2O3 being Structured
Engineering and Technology Journal,
2013, Volume 31, Issue 1, Pages 115-121
In2O3 thin films were grown by the chemical spray pyrolysis (CSP) method using the pneumatic spray set-up and compressed air as a carrier gas. Aqueous solutions containing InCl3.4H2O were deposited onto preheated glass sheets at substrate temperatures Ts=423–573K. X-ray differection (XRD) analysis confirmed the cubic bixbyite structure of indium oxide. The preferred growth orientation along the (211) plane for thin films. The crystallite size extracted from the XRD data corroborates the changes in full width at half maximum due to the variation in substrate temperature. It was shown that grain size of In2O3 thin film was (30)nm. Optical properties of In2O3 was studies and showed that the optical parameters (n, k α) were affected by substrate temperature.