Boron-doped carbon nanotubes serving as a novel chemical sensor for formaldehyde

Article Abstract:

A study investigated reactivities of the intrinsic and boron-doped (B-doped) single-walled carbon nanotubes (SWCNT) with formaldehyde (HCOH) using density functional theory calculations, in order to search for a novel sensor to detect the presence of HCOH. Results show that compared with the intrinsic SWCNT, the B-doped SWCNT presents high sensitivity to HCOH, which is attributed to the strongly chemical interaction between the electron-rich oxygen atom of HCOH and the electron-scarce boron atom of the doped SWCNT.

Usage, Density functionals, Density functional theory, Atomic properties

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Synthesis of pure boron single-wall nanotubes

Article Abstract:

The synthesis of pure boron single-wall nanotubes by reaction of BCl3 with H2 over an Mg-MCM-41 catalyst with parallel, uniform diameter cylindrical pores are shown. The reaction setup was mounted in the fume hood and the unreacted boron trichloride was burnt in a hydrogen flare to prevent the release the highly toxic boron trichloride into the atmosphere.

Analysis

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Mechanism of cobalt cluster size control in Co-MCM-41 during single-wall carbon nanotubes synthesis by CO disproportionation

Article Abstract:

The mechanisms controlling the reduction of cobalt and the growth of metallic cobalt clusters in Co-MCM-41 catalysts at different stages in the process of single-wall carbon nanotubes (SWNT) synthesis are investigated both by in-situ and ex-situ X-ray absorption spectroscopy.

Science & research, All Other Miscellaneous Chemical Product and Preparation Manufacturing, Catalysts, Chemical preparations, not elsewhere classified, Cobalt Compounds, Research, Structure

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