%0 Journal Article
%4 sid.inpe.br/mtc-m21b/2016/05.03.16.45
%2 sid.inpe.br/mtc-m21b/2016/05.03.16.45.53
%@doi 10.1016/j.diamond.2016.03.022
%@issn 0925-9635
%T Methods to grow porous diamond film doped with boron and nitrogen by deposition on carbon nanotubes
%D 2016
%8 May
%9 journal article
%A Pinheiro, Romário Araújo,
%A Lima, Cíntia Macedo de,
%A Cardoso, Lays Dias Ribeiro,
%A Trava Airoldi, Vladimir Jesus,
%A Corat, Evaldo José,
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Federal de São Paulo (UNIFESP)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@electronicmailaddress araujoromario12@yahoo.com.br
%@electronicmailaddress
%@electronicmailaddress lays.cardoso@inpe.br
%@electronicmailaddress vladimir.airoldi@inpe.br
%@electronicmailaddress evaldo.corat@inpe.br
%B Diamond and Related Materials
%V 65
%P 198-203
%K Carbon nanotubes, Nanocomposite, Porous diamond.
%X The nanocomposite of diamond deposited on carbon nanotubes (CNTs) emerged as an alternative to get Boron-Doped Diamond (BDD-CNTs) and Nitrogen-Doped Diamond (NDD-CNTs) porous films. This work got excellent wet individual seeding of each carbon nanotube of a CNT forest with minimum changes to its original morphology. The use of an oxygen plasma to graft polar groups on the CNT surface enabled efficient electrostatic self-assembling (ESA) of nanodiamonds from a dispersion in a KCl diluted solution. The use of other routes with polymer functionalization and/or polymer based nanodiamond dispersion always left some residues and promoted nanodiamond bridging among carbon nanotubes. Even though any of the alternatives may produce porous diamond-CNT composites, the one grown to reproduce closely CNT morphology may allow much better results, as a larger surface area. Thermal Chemical Vapor Deposition (CVD) via floating catalyst produced the CNTs. Two different procedures promoted functionalization, either by immersion in the cationic polymer PDDA (Poly Diallyldimethylammonium Chloride) or O2 plasma functionalization. Seeding went on from 4 nm diamond particles dispersed either in DI water with the anionic polymer Poly Sodium Styrenesulfonate (PSS), or with a KCl solution in DI water. A Hot Filament Chemical Vapor reactor deposited diamond film on the CNTs. The composites were characterized through Raman Spectroscopy, Scanning Electron Microscopy with a Field Emission Gun (FEG-SEM) and Energy Dispersive X-ray Spectroscopy (EDS).
%@language en
%3 pinheiro_methods.pdf