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Silicon holds great promise as an anode material for lithium‐ion batteries with higher energy density; its implication, however, is limited by rapid capacity fading. A catalytic growth of graphene cages on composite particles of magnesium oxide and silicon, which are made by magnesiothermic reduction reaction of silica particles, is reported herein. Catalyzed by the magnesium oxide, graphene cages...
Here, we present an ammonia (NH 3 ) sensor where carboxyl (COOH) functionalized gold nanoparticles (Au-NPs)/reduced graphene oxide (rGO) hybrid film was developed as micro-gravimetric sensing material. With the help of olefin reducing group in oleylamine solvent, gold precursor of HAuCl 4 was directly reduced to Au-NPs on the surface of rGO sheets and the Au-NPs was firmly adsorbed...
To high-performance detection of ultra-low concentration explosive vapor, we develop resonant microcantilever sensors by using a nano sensing material of functionalized GO/Au-NPs (gold-nanoparticles in situ grown on graphene-oxide sheet). To achieve specific-modification for fine selectivity and enlarge graphene surface-area for fast capturing the gas-molecules, surface-modified graphene-oxide sheets...
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