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Surface modification
About: Surface modification is a research topic. Over the lifetime, 35544 publications have been published within this topic receiving 859567 citations.
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TL;DR: In this paper, the functionalization of multi-walled carbon nanotubes (MWNTs) was performed via plasma treatment; subsequently, maleic anhydride (MA) was grafted onto the MWNTs (CNTs-MA).
Abstract: A novel method for preparing a fully integrated nanotube composite material through the use of functionalized multi-walled carbon nanotubes (MWNTs) is presented in this study. The functionalization of MWNTs was performed via plasma treatment; subsequently, maleic anhydride (MA) was grafted onto the MWNTs (CNTs-MA). Nanotube-reinforced epoxy polymer composites were prepared by first mixing the CNTs-MA and a diamine curing agent, followed by a further reaction with the epoxy matrix. In this hybrid nanocomposite system, the CNTs-MA were covalently integrated into the epoxy matrix and became part of the cross-linked structure rather than just a separate component. Fourier transform infrared (FT-IR) and high resolution X-ray photoelectron (XPS) spectroscopes were used to characterize the functional groups on the surface of the MWNTs after the plasma modification. In addition, observations of scanning electronic microscopy (SEM) and transmission electron microscopy (TEM) images showed that the functionalized na...
260 citations
260 citations
TL;DR: In this article, the surface of carbon felt electrodes has been modified for improving energy efficiency of vanadium redox flow batteries, and the effects of various surface modifications such as mild oxidation, plasma treatment, and gamma-ray irradiation were investigated at optimized conditions.
260 citations
TL;DR: In this article, a facile oxidation approach was used to obtain 1430.1μmolg −1 ǫh −1 average photocatalytic hydrogen evolution in 8h under visible-light irradiation, which was 4.3 times as high as that of the pristine sample.
Abstract: Thermally oxidized porous g -C 3 N 4 was obtained by a facile oxidation approach and 1430.1 μmol g −1 h −1 average photocatalytic hydrogen evolution is achieved in 8 h under visible-light irradiation, which was 4.3 times as high as that of the pristine sample (334.3 μmol g −1 h −1 ). It is found that this modified g -C 3 N 4 presented both porous structure and intrinsic electronic/band structure modulation, resulting in larger specific surface area with more surface reaction sites, extended light absorption range for more effective visible-light utilization, up-shifted conduction band for stronger reducibility and more effective separation of photogenerated charge carriers, which are beneficial for improving photocatalytic hydrogen evolution activity.
260 citations
TL;DR: In this article, surface modification of poly(tetrafluoroethylene) (PTFE) films by radio frequency argon plasma treatment as well as by graft copolymerization of the plasma-pretreated films with acrylamide (AAm) has been carried out.
Abstract: Surface modification of poly(tetrafluoroethylene) (PTFE) films by radio frequency argon plasma treatment as well as by graft copolymerization of the plasma-pretreated films with acrylamide (AAm) has been carried out. XPS results show that mild plasma treatment is sufficient to cause substantial surface defluorination end oxidation. The oxygen functionalities incorporated greatly facilitate subsequent graft copolymerization in the presence of near-UV radiation. Strong plasma treatment, on the contrary, results in considerable cross-linking of polymers on the surface and thus has an adverse effect on the graft copolymerizetion
259 citations