以四水合钼酸铵、六水合硝酸钴和硫脲为原料,采用一步水热法在钛网(TM)上原位构筑了不同阵列结构Co_(9)S_(8)/MoS_(2)@TM催化电极。通过改变原料中钴、钼、硫的物质的量之比来调控Co_(9)S_(8)/MoS_(2)@TM电极的结构。采用SEM、XRD和XPS...以四水合钼酸铵、六水合硝酸钴和硫脲为原料,采用一步水热法在钛网(TM)上原位构筑了不同阵列结构Co_(9)S_(8)/MoS_(2)@TM催化电极。通过改变原料中钴、钼、硫的物质的量之比来调控Co_(9)S_(8)/MoS_(2)@TM电极的结构。采用SEM、XRD和XPS对Co_(9)S_(8)/MoS_(2)@TM进行物相分析和形貌表征,并在1 mol/L KOH电解液中对Co_(9)S_(8)/MoS_(2)@TM的电催化析氧性能进行了研究。结果表明,钴、钼、硫的物质的量之比为10∶14∶600时,制备的Co_(9)S_(8)/MoS_(2)@TM为3D花瓣状阵列结构,且在10 m A/cm^(2)电流密度下过电势为271 m V,塔菲尔斜率为88.5 m V/dec,具有良好的析氧稳定性和耐久性,展现了优异的电化学性能。展开更多
V2O5 flower-like structures assembled by thin nanosheets were in-situ growth on ceramic tubes by hydrothermal process.The structural characterization indicates that V2O5 flower-like structures is orthogonal diamond ph...V2O5 flower-like structures assembled by thin nanosheets were in-situ growth on ceramic tubes by hydrothermal process.The structural characterization indicates that V2O5 flower-like structures is orthogonal diamond phase,which entirely covered on the surface of ceramic tubes.TMA sensing measured results revealed that the sensor based on V2O5 flower-like structures exhibited fast reversible and response,good selectivity to TMA and good stability at 200℃.The good sensing performance may be ascribed to flower-like structure s and directly growth sensing film on the ceramic tube without structure damage.Our works give a simple in-situ growth flower-like structures route on sensing device,which exhibits potential application for detecting trace amounts of TMA gas.展开更多
文摘以四水合钼酸铵、六水合硝酸钴和硫脲为原料,采用一步水热法在钛网(TM)上原位构筑了不同阵列结构Co_(9)S_(8)/MoS_(2)@TM催化电极。通过改变原料中钴、钼、硫的物质的量之比来调控Co_(9)S_(8)/MoS_(2)@TM电极的结构。采用SEM、XRD和XPS对Co_(9)S_(8)/MoS_(2)@TM进行物相分析和形貌表征,并在1 mol/L KOH电解液中对Co_(9)S_(8)/MoS_(2)@TM的电催化析氧性能进行了研究。结果表明,钴、钼、硫的物质的量之比为10∶14∶600时,制备的Co_(9)S_(8)/MoS_(2)@TM为3D花瓣状阵列结构,且在10 m A/cm^(2)电流密度下过电势为271 m V,塔菲尔斜率为88.5 m V/dec,具有良好的析氧稳定性和耐久性,展现了优异的电化学性能。
基金financially supported by the National Natural Science Foundation of China(Nos.61973223,61673367 and 51674067)Liao Ning Revitalization Talents Program(No.XLYC1807198)。
文摘V2O5 flower-like structures assembled by thin nanosheets were in-situ growth on ceramic tubes by hydrothermal process.The structural characterization indicates that V2O5 flower-like structures is orthogonal diamond phase,which entirely covered on the surface of ceramic tubes.TMA sensing measured results revealed that the sensor based on V2O5 flower-like structures exhibited fast reversible and response,good selectivity to TMA and good stability at 200℃.The good sensing performance may be ascribed to flower-like structure s and directly growth sensing film on the ceramic tube without structure damage.Our works give a simple in-situ growth flower-like structures route on sensing device,which exhibits potential application for detecting trace amounts of TMA gas.
