采用改进的布里奇曼法生长出Cd Si P_2单晶体,运用X射线能谱仪、傅里叶变换红外分光光度计以及红外显微镜等对在不同气氛中退火前后的Cd Si P_2晶体进行了组分元素、红外吸收系数以及红外透过均匀性测试,根据红外显微镜Mapping图像的标...采用改进的布里奇曼法生长出Cd Si P_2单晶体,运用X射线能谱仪、傅里叶变换红外分光光度计以及红外显微镜等对在不同气氛中退火前后的Cd Si P_2晶体进行了组分元素、红外吸收系数以及红外透过均匀性测试,根据红外显微镜Mapping图像的标准差值评判了晶体的红外透过均匀性。研究结果表明,经真空、Cd Si P_2粉末包裹、P/Cd（原子比为2：1）、Cd气氛等退火后,晶体组分元素的化学计量比、红外吸收系数和红外光学均匀性都得到了不同程度的改善,其中在1.29～2.00μm,经Cd Si P_2粉末包裹退火后的晶体吸收系数改善显著,在1.92～1.98μm波段的红外透过均匀性提高了14.06%;而在Cd气氛下退火后晶体的吸收系数在2.00～6.50μm波段降低最为明显,在2.70～2.78μm波段红外透过均匀性提高了17.43%。分析讨论了在上述波段中引起晶体红外吸收和红外透过不均匀性的主要因素,研究出较为有效的Cd Si P_2晶体退火工艺。展开更多
Monodispersed palladium phosphide(Pd_(3)P)(5.2 ± 0.5 nm) was firstly applied to photocatalytic Suzuki coupling reaction under visible light irradiation with CdS nanoflake as a photo sensitizer.This heterogeneous ...Monodispersed palladium phosphide(Pd_(3)P)(5.2 ± 0.5 nm) was firstly applied to photocatalytic Suzuki coupling reaction under visible light irradiation with CdS nanoflake as a photo sensitizer.This heterogeneous system exhibited high yields to corresponding products and excellent stability in alcohol solvent at room temperature.展开更多
文摘采用改进的布里奇曼法生长出Cd Si P_2单晶体,运用X射线能谱仪、傅里叶变换红外分光光度计以及红外显微镜等对在不同气氛中退火前后的Cd Si P_2晶体进行了组分元素、红外吸收系数以及红外透过均匀性测试,根据红外显微镜Mapping图像的标准差值评判了晶体的红外透过均匀性。研究结果表明,经真空、Cd Si P_2粉末包裹、P/Cd（原子比为2：1）、Cd气氛等退火后,晶体组分元素的化学计量比、红外吸收系数和红外光学均匀性都得到了不同程度的改善,其中在1.29～2.00μm,经Cd Si P_2粉末包裹退火后的晶体吸收系数改善显著,在1.92～1.98μm波段的红外透过均匀性提高了14.06%;而在Cd气氛下退火后晶体的吸收系数在2.00～6.50μm波段降低最为明显,在2.70～2.78μm波段红外透过均匀性提高了17.43%。分析讨论了在上述波段中引起晶体红外吸收和红外透过不均匀性的主要因素,研究出较为有效的Cd Si P_2晶体退火工艺。
基金the financial support from the Strategic Priority Research Program of the Chinese Academy of Sciences (No. XDB17000000)the National Natural Science Foundation of China (Nos.21773275 and 21971250)the financial support from K.C.Wong Education Foundation and the CAS-Croucher Funding Scheme for Joint Laboratories。
文摘Monodispersed palladium phosphide(Pd_(3)P)(5.2 ± 0.5 nm) was firstly applied to photocatalytic Suzuki coupling reaction under visible light irradiation with CdS nanoflake as a photo sensitizer.This heterogeneous system exhibited high yields to corresponding products and excellent stability in alcohol solvent at room temperature.
