Boron filled hybrid nanotubes

• US 10,453,583 B2
• Filed: 08/27/2016
• Issued: 10/22/2019
• Est. Priority Date: 08/27/2016
• Status: Active Grant

• Current Assignee: Rajen Bhupendra Patel, Zafar Iqbal
• Original Assignee: Rajen Bhupendra Patel, Zafar Iqbal
• Inventors: Patel, Rajen Bhupendra, Iqbal, Zafar
• Primary Examiner(s): Nguyen, Tri V
• Application Number:
  US15/249,349
• Publication Number:
  US 20180057359A1
• Time in Patent Office: 1,151 Days
• Field of Search: 2525214, 252500, 252502, 977773
• CPC Class Codes: B01J 23/745 Iron
• CPC Class Codes: B01J 23/755 Nickel
• CPC Class Codes: B01J 37/0238 via the gaseous phase-sublimation
• CPC Class Codes: C01B 32/178 Opening; Filling
• CPC Class Codes: C01B 35/04 Metal borides
• CPC Class Codes: C01B 35/06 Boron halogen compounds
• CPC Class Codes: C09K 5/14 Solid materials, e.g. powdery or granular
• CPC Class Codes: C23C 14/0605 Carbon
• CPC Class Codes: C23C 14/228 Gas flow assisted PVD deposition
• CPC Class Codes: C23C 14/24 Vacuum evaporation
• CPC Class Codes: C23C 16/26 Deposition of carbon only
• CPC Class Codes: C23C 16/4418 Methods for making free-standing articles C23C16/01 takes precedence
• CPC Class Codes: H01B 1/04 mainly consisting of carbon-silicon compounds, carbon or silicon

Abstract

A boron filled hybrid nanotube and a method for producing and rendering boron filled hybrid nanotubes suitable for applications are provided. A mixture of a boron containing nanowire producing compound and catalysts is prepared and ground for a predetermined time period. The ground mixture is subjected to a vapor deposition process including passing an inert gas over the ground mixture after adding a nanotube producing compound to the ground mixture or after passing a reactant gas on the ground mixture in a reactor at a configurable reaction temperature and a configurable reaction pressure for a configurable reaction time to produce the boron filled hybrid nanotubes with enhanced mechanical, thermal and electrical properties. Each boron filled hybrid nanotube includes one or more boron based nanowires embedded within one or more single walled or multi-walled nanotubes. The boron filled hybrid nanotubes are further purified and functionalized using acids, and/or bases, and/or surfactants.

Claims

1. A boron filled hybrid carbon nanotube comprising:

at least one of one or more single walled carbon nanotubes and one or more multi-walled carbon nanotubes, wherein a core of said boron filled hybrid carbon nanotube comprises one or more boron based nanowires, wherein said at least one of said one or more single walled carbon nanotubes and said one or more multi-walled carbon nanotubes are doped with boron from said one or more boron based nanowires, and wherein boron to carbon ratio in said at least one of said one or more single walled carbon nanotubes and said one or more multi-walled carbon nanotubes is about 1;

9;

said one or more boron based nanowires embedded within the at least one of the one or more single walled carbon nanotubes and the one or more multi-walled carbon nanotubes, wherein said one or more boron based nanowires comprise pure boron; and

said at least one of one or more single walled carbon nanotubes and one or more multi-walled carbon nanotubes, and said one or more boron based nanowires together forming a core shell, radial carbon nanotube heterostructure.