Superlong β-AgVO_3 nanoribbons: High-Yield synthesis by a pyridine-assisted solution approach, their stability, electrical and electrochemical properties

摘要

Monoclinic β-silver vanadate (β-AgVO3) nanoribbons with widths of 300-600 nm, thicknesses of ca. 40 nm, and lengths of 200-300 μm can be easily synthesized in high yield directly from a hydrothermal reaction between V_2O_5 and AgNO_3 in a solution containing a small amount of pyridine. The results demonstrated that the formation of single-crystal AgVO_3 nanoribbons is strongly dependent on the reaction temperature, especially, the presence of pyridine and its dosage. A possible growth mechanism of single-crystal AgVO_3 nanoribbons has been proposed. Exposure of the nanoribbons to electron beam will easily result in the formation of Ag nanoparticles embedded in situ on the backbone of the nanoribbons, making the nanoribbons potentially useful as efficient catalyst support. The electrical conductivity of an individual single-crystal β-AgVO_3 nanoribbon exhibits nonlinear and symmetric current/voltage (I-V) characteristics for bias voltages in the range of-6 to 6 V.