Study of Influencing Factors and the Mechanism of Preparing Triazinedithiol Polymeric Nanofilms on Aluminum Surfaces

Abstract

Triazinedithiol polymeric nanofilm was prepared on a pure aluminum surface by electrochemical polymerization of AF17N. The mechanism of the process was proposed and electrochemical polymerization parameters were investigated. The triazinedithiol polymeric nanofilm had notable lubricity, high dielectric property and superhydrophobic property due to the allyl and fluoro alkyl groups in the AF17N monomer. The chemical structure of poly (6-(N-allyl-1,1,2,2-tetrahydroperfluorodecyl)amino-1,3,5-triazine-2,4-dithiol monosodium) nanofilm (PAF17) was investigated by analysis of FT-IR spectra and X-ray photoelectron spectroscopy (XPS). The optimal conditions for the preparation process were based on the data of film weight and thickness. The optimal parameters of monomer concentration, electropolymerization time and temperature were 5 mM, 6 min and 15 °C, respectively. The electropolymerization mechanism was a radical polymerization reaction. It is expected that this technique will be applied in industrial fields for aluminum and aluminum alloy to achieve functional surfaces.

Quaternization of Composite Algal/PEI Beads for Enhanced Uranium Sorption—Application to Ore Acidic Leachate

“…As reported above, the appearance of S 2p signal on metal-loaded sorbent at 167.25 eV (which is assigned to sulfate groups [59][60][61][62]) means that sulfate (as well as HSO4 − ) probably binds onto the quaternary ammonium groups at the surface of the sorbent at pH 4 (see Scheme High-resolution spectra (HRES) (and the assignments of deconvoluted peaks) for selected signals are also shown in Tables S2 and S3. These data were previously discussed [41].…”

Interplay of mechanics and chemistry governs wear of diamond-like carbon coatings interacting with ZDDP-additivated lubricants

“…2b , left column), the S2 p spectrum has one single component (in blue) at BE = 162.3 eV corresponding to S−Zn 7 , 24 , or S−P and S=P in thiophosphates 24 . This peak is present also inside the wear tracks of the other DLCs, but the spectra contain another component (in red) at BE = 163.3 eV due to S−C bonds 25 . Note that C−S−H, C−S−C, or C−S−S−C bonding states are practically indistinguishable as their differences in the BEs are only about 0.1 eV 25 .…”

“…This peak is present also inside the wear tracks of the other DLCs, but the spectra contain another component (in red) at BE = 163.3 eV due to S−C bonds 25 . Note that C−S−H, C−S−C, or C−S−S−C bonding states are practically indistinguishable as their differences in the BEs are only about 0.1 eV 25 . The other component for ta-Cs is attributed to a peak at BE = 167.9 eV due to sulphur oxides 26 , 27 .…”

Role of Surface Capping Molecule Polarity on the Optical Properties of Solution Synthesized Germanium Nanocrystals

“…Also important is the observation that, for the carboxylic acid terminated Ge NCs, no evidence for Ge–S in either the Ge 3d region or the S 2p region (SI Figure 6) was observed, matching well with 1 H NMR and FTIR data which indicated no Ge–S binding. The S 2p peak signal at 163.2 eV matches well with the signal corresponding to C–S–C . The S:COOH ratio revealed by XPS was 1:1, indicating that the structure of the molecule is preserved after immobilization.…”