Rosetta Stone version 3 Gas composition on the bor

Gas composition on the boron-doped carbon nanotubes growth characteristics

Zeng, CAOPei-jiang. LIUFei, LIANGJi (1.DepartmentMechanicalEngineering, TsinghuaUniversity, Beijing100084, China; 2.ShenYangInstituteofAeronauticalEngineering,[link widoczny dla zalogowanych], Shenyangl10034, China; 3.VacuumandFluidEngineeringResearchCenter,[link widoczny dla zalogowanych], NortheasternUniversity, Shenyangl10004, China; 4.InstituteofPhysics,[link widoczny dla zalogowanych], ChineseAcademyofScience, Beijing100083, China;) Abstract: Boron-dopedcarbonnanotubes (CNTs ) weresynthesizedonporoussiliconbyelectroncyclotronresonancechemicalvapordepositionfromCH4, B2H6andH2wereusedasthesourcegasesandFe3O4nanoparti-clesasthecatalyst. Theeffectsofgascompositiononthegrowthcharacteristicsofboron-dopedCNTswerein-vestigated. Scanningelectronmicroscopy, transmissionelectronmicroscopyandX-rayphotoelectronspectrosco-PYwereusedtoevaluatethestructureandcomposition. ResultsshowthatadditionofB2H6influencesthegrowthcharacteristicofCNTsgreatly, makingCNTend. IncreasingtheamountofB2H6leadstoastructuralchangeintheCNTsfromstraighttubulartobamboo-like. Outerdiameterincreasesfrom60-90amto200-250am. tubewal1thicknessincreasesfrom10-20amto70-100am. andaroughersurfaceandadecreasedgrowthrateisnoted. AnincreaseintheB / CratioofthespecimenwasdetectedastheamountofB,[link widoczny dla zalogowanych], Hincreased. TheB/CratiocanbeuptO28: 72whentheB, H/CHdratiois2: 1. Keywords: Carbonnanotube; Boron-doped; ECR-CVD; GascompositionFoundationitem: NationalNaturalScienceFoundationofChina (10332020,90206028). Correspondingauthor: LIANGJi,[link widoczny dla zalogowanych], E-mail: liangji @ mail. tsinghua. edu. caAuthorintroduction: WANGZhi (1973 -), male, Ph. D. , Engagedintheresearchofsynthesisofnanomateria1. E. mail: ychwz @ sohu. com

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