Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Precise Catalyst Production for Carbon Nanotube Synthesis with Targeted Structure Enrichment

Version 1 : Received: 29 August 2020 / Approved: 30 August 2020 / Online: 30 August 2020 (15:22:52 CEST)
Version 2 : Received: 16 September 2020 / Approved: 17 September 2020 / Online: 17 September 2020 (12:01:44 CEST)

A peer-reviewed article of this Preprint also exists.

Zhang, X.; Deng, Y.; Graves, B.; De Volder, M.; Boies, A. Precise Catalyst Production for Carbon Nanotube Synthesis with Targeted Structure Enrichment. Catalysts 2020, 10, 1087. Zhang, X.; Deng, Y.; Graves, B.; De Volder, M.; Boies, A. Precise Catalyst Production for Carbon Nanotube Synthesis with Targeted Structure Enrichment. Catalysts 2020, 10, 1087.

Journal reference: Catalysts 2020, 10, 1087
DOI: 10.3390/catal10091087

Abstract

The direct growth of single-walled carbon nanotubes (SWCNTs) with a narrow distribution of diameter or chirality remains elusive despite significant benefits in properties and applications. Nanoparticle catalysts are vital for SWCNT synthesis, but how to precisely manipulate their chemistry, size, concentration, and deposition remains difficult, especially within a continuous production process from the gas-phase. Here, we demonstrate the preparation of W6Co7 alloyed nanoparticle catalysts with precisely tunable stoichiometry using electrospray, which remain solid state during SWCNT growth. We also demonstrate continuous production of liquid iron nanoparticles with in-line size selection. With the precise size manipulation of catalysts in the range of 1-5 nm, and a nearly monodisperse distribution (σ_g < 1.2), an excellent size selection of SWCNT can be achieved. All of the presented techniques show great potential to facilitate the realization of single-chirality SWCNT production.

Subject Areas

carbon nanotube; catalyst; alloy; nanoparticle; electrospray

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