论文信息 - Investigation on morphology measurement and evaluation of TiO2 nanoparticles synthesized by SANSS

Investigation on morphology measurement and evaluation of TiO2 nanoparticles synthesized by SANSS

Abstract The article investigates the morphology of TiO2 nanoparticles synthesized by a physical fabrication process, namely the submerged arc spray nanoparticle synthesis system (SANSS). An in-process sample preparation and an on-line nanoparticle sizing system using photon correlation spectroscopy (PCS) were developed to analyze the geometric (shape and size) properties of the TiO2 nanoparticles. To evaluate the measurement results, the prepared particles were measured to quantify the nanoparticle geometric characteristics by employing a group of three different microscopes, including a transmission electron microscope (TEM), a scanning electron microscope and an atomic force microscope. More than 100 particle measurement for each experiment was performed to ensure data accuracy within 95% confidence level. The experimental results revealed that the averaged sphericity of the prepared nanoparticles was 5% of the particle size. It was found that the particle sphericity was deteriorated from 3.8% to 5.6% when the averaged particle diameter was decreased from 600 nm to 50 nm.

Liang-Chia Chen

[1] J. Villarrubia. Algorithms for Scanned Probe Microscope Image Simulation, Surface Reconstruction, and Tip Estimation , 1997, Journal of research of the National Institute of Standards and Technology.

[2] Ho Chang,et al. Characterization and Optimization of Arc Spray Process Parameters for Synthesis of TiO2 Nanoparticles , 2004 .

[3] Ho Chang,et al. Development of Pressure Control Technique of An Arc-Submerged Nanoparticle Synthesis System (ASNSS) for Copper Nanoparticle Fabrication , 2003 .

[4] Tapan K. Sau,et al. Size Controlled Synthesis of Gold Nanoparticles using Photochemically Prepared Seed Particles , 2001 .

[5] Younan Xia,et al. Size-dependence of surface plasmon resonance and oxidation for Pd nanocubes synthesized via a seed etching process. , 2005, Nano letters.

[6] L. Chen,et al. In-situ measurement and control of electric discharge on Submerged Arc Synthesis process for continuous TiO2 nanoparticle fabrication , 2004 .