Search

Abstract: The commercially available copy papers and pure papers have been adopted to synthesize carbon nanomaterials. It is found that carbon nanocoils (CNCs) are efficiently synthesized on the copy paper substrates using Fe2(SO4)3/SnCl2 catalyst by a thermal chemical vapor deposition method, while only carbon nanotubes (CNTs) are obtained on the pure paper substrate using the same process. It is evidenced that the particles of calcium carbonate existing in copy paper aggregate catalyst and adsorb more sulfur elements which promote the growth of CNCs. In addition, CNCs can successfully grow out from the pure paper by adding calcium carbonate. [Copyright &y& Elsevier]

Highlights: [•] We deposited multi-wall carbon nanotubes on carbon fiber paper with a simple CVD. [•] We investigated the inherent mechanism of Ni particle's self-dispersion. [•] The MWCNTs/CFP composite possesses wonderful electrical conductivity. [ABSTRACT FROM AUTHOR]

The deposition of silicon oxide thin films as diffusion barriers on paper based substrates by means of plasma enhanced chemical vapor deposition has been investigated. Polyethylenetherephtalate film served as reference substrate. A microwave-driven slot antenna plasma source was utilized. To measure the material oxygen permeability a device has been developed which allows to measure in a broader permeability range than commercially available instruments. In addition, it also enables to detect pores in the material surface by varying the total pressure difference between the measuring chambers. It is shown that the existence of persistent pores in the substrate material is in direct relation to the success of a silicon oxide coating in terms of the reduction of the oxygen permeability. If the material possesses a totally sealed surface a reduction of the oxygen permeability in the same order of magnitude as on polymeric webs is possible. [Copyright &y& Elsevier]

In this study, the successful transfer of chemical vapor deposition (CVD)‐grown graphene on an ordinary printing paper surface is demonstrated. Pristine paper is not a suitable substrate for graphene transfer because of its fragile and hydrophilic nature against the chemicals used during the transfer process. Two different fluoroalkyl polymers, namely poly(hexafluorobutyl acrylate) (PHFBA) and poly(perfluorodecyl acrylate) (PPFDA) are coated on paper surfaces by an initiated CVD (iCVD) technique to make the paper surfaces hydrophobic. Hydrophobicity is found to be an important factor in order for the graphene to be transferred onto the paper substrate. Although surfaces coated with PPFDA possess better hydrophobicity owing to their longer perfluoroalkyl group and higher roughness, the graphene transfer is found to be more successful on a PHFBA‐coated surface. A thin film of PHFBA on the paper surface acts as a prime layer for effective and defect‐free transfer of graphene and makes the paper surface ideal and robust during the graphene transfer process. The as‐transferred graphene layer on the PHFBA‐coated paper surface shows high conductivity values, even after repeated folding and flattening cycles. [ABSTRACT FROM AUTHOR]

Uniform, ultra‐thin, and conformal films of conducting polymers can be readily fabricated directly onto large‐area substrates by oxidative chemical vapor deposition (oCVD). Since oCVD avoids high substrate temperatures and the use of solvents, no transfer step is required for integrating oCVD films into devices, even when employing paper and textile substrates. More details can be found in article number 1801564 by Meysam Heydari Gharahcheshmeh and Karen K. Gleason. Photo‐illustration by Felice C. Frankel. [ABSTRACT FROM AUTHOR]