scholarly journals TiO2 Nanoparticle Suspension Preparation Using Ultrasonic Vibration-Assisted Arc-Submerged Nanoparticle Synthesis System (ASNSS)

2004 ◽  
Vol 45 (3) ◽  
pp. 806-811 ◽  
Author(s):  
Ho Chang ◽  
Tsing-Tshih Tsung ◽  
Liang-Chia Chen ◽  
Yi-Cheng Yang ◽  
Hong-Ming Lin ◽  
...  
Keyword(s):  
Ultrasonic Vibration ◽  
Nanoparticle Synthesis ◽  
Synthesis System ◽  
Nanoparticle Suspension ◽  
Suspension Preparation

Development of Pressure Technique of Brake Nanofluids from an Arc Spray Nanoparticles Synthesis System

2006 ◽  
Vol 505-507 ◽  
pp. 49-54
Author(s):  
Mu Jung Kao ◽  
Chih Hung Lo ◽  
Tsing Tshih Tsung ◽  
Hong Ming Lin
Keyword(s):  
Nanoparticle Synthesis ◽  
Pressure Control ◽  
Low Pressure ◽  
Control Technique ◽  
Operating Pressure ◽  
Synthesis System ◽  
Arc Spray ◽  
Nanoparticles Synthesis ◽  
Technical Advances ◽  
Insulating Liquid

The low-pressure control methods for an arc-submerged nanoparicle synthesis system (ASNSS) was proposed and developed for brake nanofluids. In the process, a copper bar is melted and vaporized in insulating liquid for core formation with crystallization suppressed to derive nanofluid that contains nanometer copper particles in DOT3 brake fluid. Two technical advances associated with nanoparticle synthesis were achieved. One is the novel pressure control technique developed for nanoparticle fabrication. The other is the verification that the constant low-operating pressure. Pressure operating plays important role in determining the characteristics of the prepared nanoparticles in brake fluids. From the experimental processes, pressure control of the ASNSS was identified as crucial to success of nanoparticles synthesis. To achieve the desired pressure control, a vacuum chamber was developed as a nanoparticle accumulator and low-pressure reservoir. The chamber was controlled by the proposed flow –valve feedback control system and integrated with the ASNSS. The pressure control equipment of the ASNSS was effectively developed to prepare desired copper-oxide brake nanofluids with well-controlled size.

scholarly journals Multifunction of Ni/Ag Nanocompound Fluid

2013 ◽  
Vol 2013 ◽  
pp. 1-4 ◽  
Author(s):  
Mu-Jung Kao
Keyword(s):  
Thermal Conductivity ◽  
Visible Light ◽  
Nanoparticle Synthesis ◽  
Magnetic Characteristic ◽  
Electrical Energy ◽  
Characteristic Analysis ◽  
Synthesis System ◽  
Spectra Analysis ◽  
Heating Source ◽  
Higher Temperature

An arc-submerged nanoparticle synthesis system (ASNSS) is proposed and developed for fabricating Ni/Ag nanocompound fluid. In the development process, the positive and negative electrodes in the system are Ni and Ag, respectively. Applied electrical energy then produces heating source by generating an adequate arc with a high temperature that can melt and vaporize the two electrodes. The nanocompound fluid that is generated by the synthesis system is analyzed by morphological analysis, Zeta potential analysis, heat conductivity analysis, magnetic characteristic analysis, and UV-Vis absorption spectra analysis. Experimental results show that increasing the concentration of added particles and the higher temperature can be helpful to the enhancement of thermal conductivity. The Ni/Ag nanofluid not only preserves the magnetic character of the nickel and the ability of silver to absorb visible light but also enhances the thermal conductivity. The absorption occurs at 406 nm wavelength (redshift from 396 nm to 406 nm), which means that, under the excitement of visible light range (400~700 nm), it can let more easy electrons jump to the conductivity zone from the valence electron zone.

Fabrication of copper oxide nanofluid using submerged arc nanoparticle synthesis system (SANSS)

2005 ◽  
Vol 7 (2-3) ◽  
pp. 313-320 ◽  
Author(s):  
Chih-Hung Lo ◽  
Tsing-Tshih Tsung ◽  
Liang-Chia Chen ◽  
Chun-His Su ◽  
Hong-Ming Lin
Keyword(s):  
Copper Oxide ◽  
Nanoparticle Synthesis ◽  
Synthesis System ◽  
Submerged Arc

Preparation of silver nanofluid by the submerged arc nanoparticle synthesis system (SANSS)

2007 ◽  
Vol 434-435 ◽  
pp. 659-662 ◽  
Author(s):  
Chih-Hung Lo ◽  
Tsing-Tshih Tsung ◽  
Hong-Ming Lin
Keyword(s):  
Nanoparticle Synthesis ◽  
Synthesis System ◽  
Submerged Arc

Photocatalytic and UV Characterization of TiO2 Nanofluid Prepared by SANSS on HVAC

2007 ◽  
Vol 364-366 ◽  
pp. 937-941
Author(s):  
Ching Song Jwo ◽  
Chien Chih Chen ◽  
Ho Chang ◽  
Sih Li Chen ◽  
Shin Jr Ho
Keyword(s):  
Ambient Pressure ◽  
Nanoparticle Synthesis ◽  
Ammonia Emission ◽  
Synthesis System ◽  
Reaction Cell ◽  
Simple Measurement ◽  
Degradation Reaction ◽  
Submerged Arc ◽  
Ammonia Flux

This study develops a measurement method for testing the efficiency of photocatalysts in the degradation of NH3 gaseous concentrations. The catalysts used in this study are the same as those used previously in our UV/VIS spectrophotometer. Reaction measurements were carried out at 27°C and 17°C under ambient pressure on Heat Ventilating and Air Conditioning (HVAC) system. Quartz plates were coated with TiO2 nanocatalyst. Then the plate was put in the stable reaction cell under different flow rates of circulation. The experiment gives a direct and simple measurement of ammonia flux and hence of overall ammonia emission rate. The results reveal that the Submerged Arc Nanoparticle Synthesis System (SANSS) TiO2 nanocatalyst has excellent degradation efficiency towards NH3, so that when it is exposed to UV irradiation for 60 minutes, the gaseous concentration can be reduced to 10% of the original concentration. In addition, the rate constant of the degradation reaction of the self-made TiO2 nanocatalyst towards NH3 is as high as 0.039min-1.

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