Sohn Hong Yong, Murali Arun
Department of Metallurgical Engineering, University of Utah, Salt Lake City, UT 84112, USA.
Molecules. 2021 Mar 7;26(5):1456. doi: 10.3390/molecules26051456.
This article reviews and summarizes work recently performed in this laboratory on the synthesis of advanced transparent conducting oxide nanopowders by the use of plasma. The nanopowders thus synthesized include indium tin oxide (ITO), zinc oxide (ZnO) and tin-doped zinc oxide (TZO), aluminum-doped zinc oxide (AZO), and indium-doped zinc oxide (IZO). These oxides have excellent transparent conducting properties, among other useful characteristics. ZnO and TZO also has photocatalytic properties. The synthesis of these materials started with the selection of the suitable precursors, which were injected into a non-transferred thermal plasma and vaporized followed by vapor-phase reactions to form nanosized oxide particles. The products were analyzed by the use of various advanced instrumental analysis techniques, and their useful properties were tested by different appropriate methods. The thermal plasma process showed a considerable potential as an efficient technique for synthesizing oxide nanopowders. This process is also suitable for large scale production of nano-sized powders owing to the availability of high temperatures for volatilizing reactants rapidly, followed by vapor phase reactions and rapid quenching to yield nano-sized powder.
本文回顾并总结了本实验室近期利用等离子体合成先进透明导电氧化物纳米粉末的工作。由此合成的纳米粉末包括氧化铟锡（ITO）、氧化锌（ZnO）、锡掺杂氧化锌（TZO）、铝掺杂氧化锌（AZO）和铟掺杂氧化锌（IZO）。这些氧化物除了具有其他有用特性外，还具有优异的透明导电性能。ZnO和TZO还具有光催化性能。这些材料的合成始于选择合适的前驱体，将其注入非转移热等离子体中使其汽化，随后进行气相反应以形成纳米级氧化物颗粒。通过使用各种先进的仪器分析技术对产物进行分析，并通过不同的适当方法测试其有用性能。热等离子体工艺作为一种合成氧化物纳米粉末的有效技术显示出巨大潜力。由于能够提供高温以快速挥发反应物，随后进行气相反应并快速淬火以生成纳米级粉末，该工艺也适用于大规模生产纳米粉末。
