Experimental and numerical investigation on in-flight synthesis of Ga-doped ZnO nano-powder by Radio-Frequency induction plasma
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In this work, in-flight synthesis route of Ga doped ZnO (GZO) nano-powders was investigated experimentally andnumerically, using Radio-Frequency (RF) induction plasmas. For experimental study, mixture of micron-sized ZnO and Ga2O3powders were treated by RF induction plasmas, then, the as-treated powders were retrieved from reactor bottom and filtrationfor characterization. For numerical study, single particle model was combined with two-dimensional simulation code of RFinduction plasma to predict the particle behaviors of ZnO and Ga2O3 depending on their sizes. First, experimental resultsshowed that filtration-retrieved powders were characterized as GZO nano-powders although gallium content can be decreaseddue to Ga2O3 decomposition into sub-oxides at the elevated temperatures. From reactor bottom, however, spherical structuresconsisting of Ga2O3 and ZnO particles were observed in sub-millimeter sizes. Numerical results predicted that micron-sized(≤ 10 μm) ZnO and Ga2O3 particles can vaporize easily during the flight of plasma, while particles with the sizes of 25~100um were simulated to be partially evaporated or unevaporated. Comparing these experimental and numerical results indicatesthat GZO nano-powders can be synthesized from vapor species of ZnO and Ga2O3, which are primarily produced by in-flighttreatment of micron-sized ZnO and Ga2O3 powders in RF induction plasmas.
Abstract
In this work, in-flight synthesis route of Ga doped ZnO (GZO) nano-powders was investigated experimentally andnumerically, using Radio-Frequency (RF) induction plasmas. For experimental study, mixture of micron-sized ZnO and Ga2O3powders were treated by RF induction plasmas, then, the as-treated powders were retrieved from reactor bottom and filtrationfor characterization. For numerical study, single particle model was combined with two-dimensional simulation code of RFinduction plasma to predict the particle behaviors of ZnO and Ga2O3 depending on their sizes. First, experimental resultsshowed that filtration-retrieved powders were characterized as GZO nano-powders although gallium content can be decreaseddue to Ga2O3 decomposition into sub-oxides at the elevated temperatures. From reactor bottom, however, spherical structuresconsisting of Ga2O3 and ZnO particles were observed in sub-millimeter sizes. Numerical results predicted that micron-sized(≤ 10 μm) ZnO and Ga2O3 particles can vaporize easily during the flight of plasma, while particles with the sizes of 25~100um were simulated to be partially evaporated or unevaporated. Comparing these experimental and numerical results indicatesthat GZO nano-powders can be synthesized from vapor species of ZnO and Ga2O3, which are primarily produced by in-flighttreatment of micron-sized ZnO and Ga2O3 powders in RF induction plasmas.
참고문헌 (28)
- A. Janotti, , Rep. Prog. Phys, 72(12), pp.126501~ (2009)
- T. Minami, , Thin Solid Films, 517(4), pp.1474~1477 (2008)
- K. J. Chen, , Appl. Surf. Sci, 254(18), pp.5791~5795 (2008)
- H.M. Kim, , Jpn. J. Appl. Phys, 50(4R), pp.045801~ (2011)
- S. Cimitan, , J. Colloid Interface Sci, 329(1), pp.73~80 (2009)
- V. Assuncao, , Thin Solid Films, 427(1-2), pp.401~405 (2003)
- E. Fortunato, , Applied Physics A, 96(1), pp.197~205 (2009)
- X. Zhang, , Mater. Lett, 112, pp.129~132 (2013)
- S. Du, , Mater. Lett., 60(25-26), pp.3133~3136 (2006)
- 서준호, "THERMAL PLASMA SYNTHESIS OF NANO-SIZED POWDERS", Nuclear Engineering and Technology, 44(1), pp.9~20 (2012), 한국원자력학회
- M. Tanaka, , Nanomaterials, 6(4), pp.60~ (2016)
- M. Y. Lee, , Chinese J. Catal, 37(5), pp.743~749 (2016)
- J. H. Seo, , Thin Solid Films, 519(20), pp.7111~7115 (2011)
- A. F. Arif, , Sci. Rep, 7(1), pp.3646~ (2017)
- 남준석, "Numerical Analysis on the Electrical and Thermal Flow Characteristics of Ar-N2 Inductively Coupled Plasma Torch System", Journal of the Korean Physical Society, 72(7), pp.755~764 (2018), 한국물리학회
- M. Shigeta, , J. Chem. Eng. Japan, 39(12), pp.1255~1264 (2006)
- P.J. Bhuyan, "arXiv:1304.3173", ~
- P. Proulx, , Plasma Chem. Plasma Process, 7(1), pp.29~52 (1987)
- Jun‑Seok Nam, "Numerical Analysis of Radio‑Frequency Inductively Coupled Plasma Spheroidization of Titanium Metal Powder Under Single Particle and Dense Loading Conditions", Metals and Materials International, 26(4), pp.491~500 (2020), 대한금속·재료학회
- J. Mostaghimi, , Plasma Chem. Plasma Process, 9(1), pp.25~44 (1989)
- S. H. Paik, , Plasma Chem. Plasma Process, 10(1), pp.167~188 (1990)
- S.V. Patankar, "Numerical Heat Transfer and Fluid Flow" (1980), Hemisphere
- A.A. Samarskii, "Introduction to the Theory of Difference schemes", pp.275~ (1971), Nauka
- J. W. McKelliget, , Proceedings of the International Symposium Metallurgical Processes for the Year 2000 and Beyond, pp.169~ (1989), T.M.S
- P. Walker, "CRC handbook of metal etchants" (1990), CRC Press
- M. Binnewies, "Thermochemical data of elements and compounds" (2002), Wiley-VCH
- Z. Galazka, , Cryst. Res. Technol, 45(12), pp.1229~1236 (2010)
- S. I. Stepanov, , Rev. Adv. Mater. Sci, 44, pp.63~86 (2016)