One-pot synthesis of (Au nanorod)-(metal sulfide) core-shell nanostructures with enhanced gas-sensing property.

(Au nanorod)-(metal sulfide) core-shell structures are synthesized by employing Au nanorods as the starting reactants and metal thiobenzoates as the metal sulfide precursors in the presence of Ag(+) ions. The gas-sensing property of the prepared (Au nanorod)-CdS sensor exhibit a significantly enhanced response and higher sensitivity in comparison with a CdS sensor.