The effects of a room temperature ionic liquid, 1-butyl-3-methylimidazolium terafluoroborate ([Bmim]BF4), on the photocatalytic performance of Degussa P25 TiO2 were investigated. Also, the photocatalysis mechanism was...
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Highly monodispersed platinum-based nanoalloys are the best-known catalysts for the oxygen reduction reaction. Although certainly promising, the durability and stability are among the main requirements for commerciali...
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Highly monodispersed platinum-based nanoalloys are the best-known catalysts for the oxygen reduction reaction. Although certainly promising, the durability and stability are among the main requirements for commercializing fuel cell electrocatalysts in practical applications. Herein, we synthesize highly stable, durable and catalytic active monodispersed PtPd nanoparticles encapsulated in a unique one [email protected] cell structure by adjusting the viscosity of solvents using mesocellular foam. PtPd nanoparticles in mesocellular carbon foam exhibit an excellent electrocatalytic activity (over 4 times mass and specific activities than the commercial Pt/C catalyst). Most importantly, this nanocatalyst shows no obvious change of structure and only a 29.5% loss in electrochemically active surface area after 5000 potential sweeps between 0.6 and 1.1 V versus reversible hydrogen electrode cycles.
TiO2 nanotube arrays modified by V2O5 nanoparticles were synthesized by the electrophoresis deposition method, showing significant enhancement on sunlight photodegradation of crystal violet due to the role of interfac...
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SiC/Cu composites exhibit low density, low coefficient of thermal expansion and excellent mechanical properties. In this study, Zn of 2 wt. % was added as the sintering activator, and the high volume faction (60%) SiC...
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Antimony-doped tin oxide (ATO) nanoparticles with controlled doping level were prepared by a nonaqueous solution route, using alcohol as the solvent, citric acid as an agent, tin (IV) tetrachloride as tin source and a...
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CdS/TiO2 composites consisted of uniform anatase TiO2 of 15 nm are successfully prepared by water in oil method with cubic phase CdS nanocrystals highly dispersed, which exhibits strong visible light absorption at abo...
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Loosely packed MoS2 nanosheets with thin carbon coating were synthesized via a facile, one-pot hydrothermal growth method. In the resulted optimal-designed nanoarchitecture, the ultrathin nanosheets, with a wall-thick...
Loosely packed MoS2 nanosheets with thin carbon coating were synthesized via a facile, one-pot hydrothermal growth method. In the resulted optimal-designed nanoarchitecture, the ultrathin nanosheets, with a wall-thickness of approximately 5-10 nm, provide large electrode-electrolyte interface, so as to facilitate faster lithium-ions intercalation and diffusion. The flexible and conductive carbon overcoats accommodate and alleviate the volume variation of the composites and thus maintain the structural and electrical integrity. In favor of the synergy and interplay of the carbon effect and intrinsic structural advantages, MoS2@C (1:2) composites with the precursor MoO3: D-glucose molar ratio of 1:2 exhibit high reversible specific capacity of 1419 mA h g-1 at 0.1 A g-1, retain 80 % of the capacity after 50 cycles, and excellent rate capability as high as 672 mA h g-1 at 10 A g-1 with almost 100 % Coulombic efficiency. The good electrochemical performance suggests that these MoS2@C composites with unique flower-like morphology give rise to high specific surface area and increased layer distance leading to the reduced diffusion path of lithium-ions and rapid electrons transport. The rational and optimal design of the MoS2@C composites with an excellent electrochemical performance in the report creates a new avenue to develop a high-performance anode material.
A novel kind of porous SiO2@TiO2 microspheres have been synthesized by a convenient hydrothermal method with SiO2 spheres as the core strcuture, which exhibits an enhanced degradation rate towards gaseous benzene than...
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In this paper, full-density Al-Zn-Mg-Cu-Zr powder metallurgy(P/M) alloy is prepared by hot-press sintering in vacuum at 600°C. Experiments are conducted to evaluate the effects of Zn additive in the range of 7.2-...
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