Yakun Guo’s research while affiliated with China Academy of Engineering Physics and other places

... Figure 6c and Supplementary Table 8 compare the hydrogen uptake capacity of DEB-containing composites using Pd and Pd-based multifunctional catalysts. Our PdPtRu-contained nanocatalysts exhibit the highest catalytic activity for DEB than other Pd catalysts [22][23][24]47,48 . ...

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Ambient hydrogenation of solid aromatics enabled by a high entropy alloy nanocatalyst

... After high doses radiation exposure polymeric chains could undergo destruction, with further-as a consequence of the polymer chains breaking-free radicals creation [61]. While natural rubber (NR) constitute unique compound in the flexible nanocomposite development, it is susceptible to degradation-for instance, in Ref. [62] the natural rubber latex (NRL) film was analyzed in terms of degradation after radiation exposure, where the changes in physical properties with the greater dose occured (the reduction in tensile strength and elongation at break). The mechanical properties due to gamma and UV irradiation of epoxy resin with ZnO particles addition have also deteriorated, where it was stated, that the strength has decreased by at least 45% [63]. ...

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Paraffin-based composites containing high density particles: lead and bismuth and its' oxides as γ-ray shielding materials: an experimental study

... In an experimental study, Shi and Maimaitiyiming reported that a three-dimensional porous structure including nitrogen, phosphorus and sulfur dopants for as efficient bifunctional electrocatalysts for direct methanol fuel cell [39]. Another experimental study reported by Zhao et al. that consisted of Pd doped three-dimensional graphene aerogel for hydrogen adsorption [40]. ...

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Graphene pillared - Porous graphene framework; structural analysis and gas storage capacities

... The SEM micrographs of SAT-based coatings displayed a relatively smooth surface topography, before and after UV irradiation, except for SAT50-5EG where the surface was covered with some relatively wide microcracks ( Figure S7). We observed that UV irradiation slightly reorganized the surface morphology of the films, in agreement with the previous literature, 50,51 particularly for the amphiphilic SACbased coatings. ...

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Reduced Ice Adhesion Using Amphiphilic Poly(Ionic Liquid)-Based Surfaces

... A quadrupole mass spectrometer (QMS) was used to track the ion current of D 2 (mass 4) at the downstream. Before the measurement was taken, the D 2 signal was calibrated using a D 2 standard leak to determine the relationship between leakage and ion current [38]. The steady-state deuterium permeation fluence that passes through the samples was calculated as follows [39]: ...

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Effect of Au-ion irradiation on the microstructure and deuterium permeation resistance of the Al2O3 prepared by the MOD method

... Small-angle X-ray Scattering (SAXS) was used to evaluate the microphase separation structure of SEBS. Preparation of DEB-Pd/C DEB-Pd/C was produced by ball milling DEB and Pd/C [25]. The methods of preparation are shown in Supporting Information. ...

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Ultrathin flexible hydrogen getter films with excellent hydrogen uptake and mechanical properties

... To verify the reliability of the existing data, the niobium film diffusivity (Figure c) and permeability (Figure d) obtained in this study were compared with the existing literature. The deuterium permeability results we observed are roughly in agreement with Steward and Guo's work [21,22], lower than Liu's by about 1 orders of magnitude [17]. While the diffusivity is roughly consistent with Guo's results, it is significantly lower than Steward's and Liu's by about 3 orders of magnitude. ...

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Effect of Deuterium Loading on Permeation of Deuterium Through Niobium at Relative Low Pressure

... Because tritium is The Journal of Chemical Physics ARTICLE pubs.aip.org/aip/jcp one of the main transmutation products in RAFM, 19,[29][30][31] various experiments have been conducted to measure its permeability and investigate the trapping of hydrogen isotopes in RAFM. 18,19,30 Recently, Nakamura et al. 32 and Shimada and Pawelko 33 directly measured the permeability of tritium in tungsten. ...

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Thermal expansion, lattice vibration, and isotope effect on hydrogen diffusion in BCC Fe, Cr, and W from first-principles calculations

... The strategy to increase the efficiency and rate of DA-based self-healing processes through the photothermal effect of graphene has also been employed in epoxy/ graphene and polyacrylonitrile/graphene nanocomposites [104][105][106][107]. In a very interesting and innovative study, Jiang et al. demonstrated the efficacy of this strategy to design functional devices with highly sophisticated 3D structures in DA-epoxy networks. ...

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Perspective Chapter: Harnessing the Photothermal Effect of Graphene for Self-Healing and Recycling of Polymers

... This is mainly due to the conditions at which the polymer will heal. Healing of the most applicable agent glycidyl methacrylate (GMA) with a modified aliphatic polyamine latent curing agent (EH-4360S) in an epoxy matrix, would require the 20 pole to be heated to 120 o C for 48 hours to return to 90% material integrity [21][22][23]. While this is not feasible today, self-healing polymers could be on the horizon for pole vault. ...

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The Future of Pole Vaulting