東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Electrothermal-atomization-condensat...

Richards, Stephen Joseph.

Linked to FindBook

Google Book

Amazon

博客來

Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles./
Author:	Richards, Stephen Joseph.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2020,
Description:	91 p.
Notes:	Source: Masters Abstracts International, Volume: 81-09.
Contained By:	Masters Abstracts International81-09.
Subject:	Chemistry. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27738356
ISBN:	9781392554739

Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles.
Richards, Stephen Joseph.

Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles. - Ann Arbor : ProQuest Dissertations & Theses, 2020 - 91 p.

Source: Masters Abstracts International, Volume: 81-09.

Thesis (M.S.)--California State University, Fresno, 2020.

This item must not be sold to any third party vendors.

A fast, inexpensive, simple, and miniaturized chemical vapor deposition method has been developed to generate nanoparticles. The modular design of the device allows for precise control of parameters such as heat transfer, the introduction of catalytic surfaces, and reactor atmosphere, among others. Reactor miniaturization and a chemical vapor deposition (CVD) process provides a time and cost-benefit by reducing synthesis time, reagent required, and by eliminating multi-step synthesis. The modularity of the device allows for investigation of the effect of reactor parameters on nanoparticle synthesis. A chamber with vacuum, gauge, and gas inflow attachments house two watercooled copper electrodes, between which a resistor may be mounted. Above this resistor a substrate can be placed via a mount not electrically connected to the copper electrodes. By controlling current flow through the circuit, the temperature of the resistor can be increased to atomize molecules that encounter the resistor. The atoms may then recombine on or near the substrate surface to form new molecules. The use of this reactor has yielded carbon, zinc oxide and tantalum oxide nanoparticles with various morphologies including wires, rods, rods on spheres, stars, and tubes through manipulation of reactor atmosphere, substrate composition, and heating element composition and geometry. The formation of these nanoscale materials was characterized by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Reaction time was less than 10 minutes for all products save one, and the cost of reactor assembly is estimated to be approximately $1000, cheaper by at least one integer multiple of commercially available systems.

ISBN: 9781392554739Subjects--Topical Terms:

516420
Chemistry.
Subjects--Index Terms:

Nanoparticle reactor

Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles.
LDR:02790nmm a2200337 4500 001 2270196
005 20200921070751.5
008 220629s2020 ||||||||||||||||| ||eng d
020 $a 9781392554739
035 $a (MiAaPQ)AAI27738356
035 $a AAI27738356
040 $a MiAaPQ $c MiAaPQ
100 1 $a Richards, Stephen Joseph. $3 3547565
245 1 0 $a Electrothermal-atomization-condensation for Fast Synthesis and Discovery of Nanoparticles.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2020
300 $a 91 p.
500 $a Source: Masters Abstracts International, Volume: 81-09.
500 $a Advisor: Ng, Kin C.
502 $a Thesis (M.S.)--California State University, Fresno, 2020.
506 $a This item must not be sold to any third party vendors.
520 $a A fast, inexpensive, simple, and miniaturized chemical vapor deposition method has been developed to generate nanoparticles. The modular design of the device allows for precise control of parameters such as heat transfer, the introduction of catalytic surfaces, and reactor atmosphere, among others. Reactor miniaturization and a chemical vapor deposition (CVD) process provides a time and cost-benefit by reducing synthesis time, reagent required, and by eliminating multi-step synthesis. The modularity of the device allows for investigation of the effect of reactor parameters on nanoparticle synthesis. A chamber with vacuum, gauge, and gas inflow attachments house two watercooled copper electrodes, between which a resistor may be mounted. Above this resistor a substrate can be placed via a mount not electrically connected to the copper electrodes. By controlling current flow through the circuit, the temperature of the resistor can be increased to atomize molecules that encounter the resistor. The atoms may then recombine on or near the substrate surface to form new molecules. The use of this reactor has yielded carbon, zinc oxide and tantalum oxide nanoparticles with various morphologies including wires, rods, rods on spheres, stars, and tubes through manipulation of reactor atmosphere, substrate composition, and heating element composition and geometry. The formation of these nanoscale materials was characterized by scanning electron microscopy and energy-dispersive X-ray spectroscopy. Reaction time was less than 10 minutes for all products save one, and the cost of reactor assembly is estimated to be approximately $1000, cheaper by at least one integer multiple of commercially available systems.
590 $a School code: 6050.
650 4 $a Chemistry. $3 516420
650 4 $a Nanotechnology. $3 526235
650 4 $a Nanoscience. $3 587832
653 $a Nanoparticle reactor
653 $a Nanoparticle synthesis
690 $a 0485
690 $a 0652
690 $a 0565
710 2 $a California State University, Fresno. $b Chemistry. $3 3434293
773 0 $t Masters Abstracts International $g 81-09.
790 $a 6050
791 $a M.S.
792 $a 2020
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27738356