Carbon-supported Au-Pt xFe y nanoparticles were synthesized via microwave heating polyol process, followed by annealing for the formation of ordered structure. The structure characterizations indicate that Au is alloyed with intermetallic Pt-Fe and therefore surface electronic properties are tuned. electrochemical tests show process more effective than oil bath synthesizing highly active catalysts. introduction trace (0.2 wt % Au) significantly improves oxygen reduction reaction (ORR)...

Abstract Developing low‐cost, highly active, and stable bifunctional catalysts is of great significance for electrochemical water splitting. Herein, novel Ru‐O 3 Se 4 single atoms doped Ni 2 /FeSe interface catalyst fabricated by a two‐step method hydrogen evolution reaction (HER) oxygen (OER). Notably, Ru‐Ni nanosheets exhibit excellent HER (43 mV@10 mA cm −2 ) OER (283 mV@100 activities in alkaline solution. In particular, the mass activity 3593.61 mg Ru −1 at 200 mV 7073.80 400 OER, which...

Adsorbed metal atoms and doping onto TiO₂ can effectively enhance the optical photocatalytic activity of efficiency titanium dioxide (TiO₂), favoring extension its absorption spectrum hydrogen generation. To investigate possible mechanism causing potential improvement activity, electronic properties anatase TiO₂(101) plane with different adsorbed atom have been theoretically calculated through density functional theory (DFT) method. Adsorption Pd Ru increases delocalization states, an...

Abstract The confining effect is essential to regulate the activity and stability of single‐atom catalysts (SACs), but universal fabrication confined SACs still a great challenge. Here, various lattice‐confined Pt supported by different carriers are constructed co‐reduction approach. Notably, single atoms in lattice Ni(OH) 2 (Pt 1 /Ni(OH) ) with high electron‐deficient state exhibit excellent for basic hydrogen evolution reaction (HER). Specifically, just requires 15 mV get 10 mA cm −2 mass...

<title>Abstract</title> <bold>Background &amp; Aims:</bold> The soil micro-food web plays a crucial role in facilitating ecological restoration and maintaining ecosystem functionality post-mining environments. However, the specific influence of reclamation patterns on structure their trophic transfer efficiency mining soils remains unclear. Therefore, this study aimed to analyse impacts models elucidate underlying mechanisms that restores functions. <bold>Methods:</bold> We conducted field...

Accelerating the separation and migration of photo-carriers (electron-hole pairs) to improve photo-quantum utilization efficiency in photocatalytic overall water splitting is highly desirable. Herein, photo-deposition Ru or Au noble metal clusters with superior electronic properties as a co-catalyst on (101) facet anatase TiO2 mechanism intensifying photocatalysis have been investigated by calculation based density functional theory (DFT). As result, as-synthesized Ru/TiO2 Au/TiO2 exhibit...

An atmospheric-pressure air plasma is employed to treat C6 glioma cells in vitro. To elucidate on the mechanism causing cell death and role of reactive species (RS) medium produced by plasma, concentration long-lived RS such as hydrogen peroxide, nitrate, ozone plasma-treated liquid (phosphate-buffered saline solution) measured. When vitamin C added a ROS quencher, viability after treatment different from that without C. The results demonstrate oxygen (ROS) H2O2, O3 constitute main factors...

Abstract The phase state of nanoparticles plays a pivotal role in regulating the electronic structure Pd to enhance catalytic performance and durability for oxygen reduction reaction (ORR). To elucidate correlation with activity, series body‐centered cubic (bcc) PdCu/C, PdCuFe/C, PdCuCo/C intermetallic compounds were fabricated by using an impregnation method followed annealing. results rotating disk electrode studies show that structurally ordered PdCuFe/C exhibit much larger increase mass...

Abstract Strain engineering is an effective strategy for manipulating the electronic structure of active sites and altering binding strength toward adsorbates during hydrogen evolution reaction (HER). However, effects weak strong strain on HER catalytic activity have not been fully explored. Herein, core‐shell PdPt alloys with two‐layer Pt shells (PdPt 2L ) multi‐layer ML constructed, which exhibit distinct lattice strains. Notably, effect just requires a low overpotential 18 mV to reach 10...

With the rapid development of fuel cell technology, low reduction rate oxygen on Pt-based cathodes is generally considered main obstacle. Pt/transition metal alloys (Pt-Ms) or oxides (Pt-MO x ) can be formed by doping transition atoms into lattice Pt layer depositing onto surface to intensify catalytic activity electrodes. In this work, a stepwise solution chemical method for high dispersion cobalt oxyhydroxide (-OCoOH) deposited facet as nano-islands and mechanism promoting reaction (ORR)...

Porous cobalt nanowall arrays have been prepared by electrochemical deposition of mono-precursor [Co(NH(3))(5)Cl]Cl(2) on copper substrates. Brunauer-Emmett-Teller (BET) and Barret-Joyner-Halenda (BJH) investigations the surface properties indicate that resulting porous nanomaterials possess high area uniform pore size distribution, which implies potential applications in some fields, such as catalysis, energy, magnetic data storage devices. The magnetism measurements take a good...

Oxidative stress is a critical mechanism underlying secondary injury during diffuse axonal (DAI), and nuclear factor erythroid 2-related 2 (Nrf2)-antioxidant response element (ARE) an important in the antioxidative pathway. This study investigated changes Nrf2-ARE expression rats with DAI to provide basis for studying guide clinical practice. The rat traumatic brain (TBI) model was established by speeding rotation device confirmed neural scoring silver staining. Nrf2 protein at 1, 6, 24, 48,...

To effectively improve photocatalytic activity, the morphology and crystallinity of semiconductor photocatalysts must be precisely controlled during formation process. Self-aligned Nb2O5 nanotube arrays have been successfully fabricated using electrochemical anodization method. A novel growth mechanism nanotubes has proposed. Starting from initial oxidation process, “multi-point” corrosion fluoride ions is a key factor in arrays. The inner diameter wall thickness present gradually increasing...

Summary form only given. In recently, there has been a growing interest in developing non-thermal atmospheric pressure plasma, particularly for biomedical applications such as sterilization of living tissue, vivo and vitro blood coagulation, chronic wound healing, various skin diseases therapy, treatment cancer cell. this study, we show response to cells upon with cold plasma jets. The rat C6 glioma cell can be selectively eradicated by jet without damaging normal cells, experiments on...