Insight into BN Impurity Formation during Boron Nitride Nanotube Synthesis by High-Temperature Plasma
Keun Su Kim, Gabriela Sigouin, Hyunjin Cho, Martin Couillard, M. Gallerneault, Se Youn Moon, Hun Su Lee, Myung Jong Kim, Se Gyu Jang, Homin Shin
Abstract
< 4000 K). This results in the generation of unreacted BN precursors (e.g., B-N-H species) in the BNNT growth zone that eventually self-assemble into BN impurities. Our numerical simulation also suggests that a higher thermal energy input makes the flow more turbulent in the BNNT growth zone due to the elevated velocity difference between the plasma jet and ambient cold gas. This finding provides critical insight into the process design that can suppress the BN impurity formation in the high-temperature plasma process.
Topics & Concepts
Materials scienceImpurityNucleationBoron nitridePlasmaChemical physicsBoronChemical engineeringNanotechnologyChemistryQuantum mechanicsPhysicsEngineeringOrganic chemistryBoron and Carbon Nanomaterials ResearchGraphene research and applicationsMXene and MAX Phase Materials