Cubic C3N4 compound in the C-N thin films on Si and NaCl substrates was prepared by ion beam sputtering of a pure graphite target with discharge gas of pure N2. X-ray photoelectron spectroscopy indicated that nitrogen...Cubic C3N4 compound in the C-N thin films on Si and NaCl substrates was prepared by ion beam sputtering of a pure graphite target with discharge gas of pure N2. X-ray photoelectron spectroscopy indicated that nitrogen atoms combined with sp2- and sp3- coordinated C atoms in the film, respectively. X-ray diffraction, selected area electron diffraction and high-resolution electron microscopy were used to identify the cubic C3N4 phase. The results reconfirm the ab initio calculations on metastable structure in C-N compounds展开更多
The aggregating properties of Cz-C-n (n = 3, 6, 10) have been investigated by means of fluorescence method in DMSO-H2O binary solvent. The measured CAC and C F values indicate that the aggregating tendency of the amp...The aggregating properties of Cz-C-n (n = 3, 6, 10) have been investigated by means of fluorescence method in DMSO-H2O binary solvent. The measured CAC and C F values indicate that the aggregating tendency of the amphiphilic compounds Cz-C-n containing crown ether increases with the length of alkyl chains, similar to that of carbazole compounds with long alkyl chains.展开更多
以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通...以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通过EDS和UV-Vis吸收光谱表征了薄膜的成分及光学性能,结果表明,当沉积温度为350℃时,N/C-TiO_2薄膜的N、C质量分数最高,其禁带宽度降低为2. 82 e V,对可见光的吸收最强。与纯的二氧化钛薄膜相比,N/C-TiO_2薄膜对亚甲基蓝的降解率显著提高到90%。展开更多
文摘Cubic C3N4 compound in the C-N thin films on Si and NaCl substrates was prepared by ion beam sputtering of a pure graphite target with discharge gas of pure N2. X-ray photoelectron spectroscopy indicated that nitrogen atoms combined with sp2- and sp3- coordinated C atoms in the film, respectively. X-ray diffraction, selected area electron diffraction and high-resolution electron microscopy were used to identify the cubic C3N4 phase. The results reconfirm the ab initio calculations on metastable structure in C-N compounds
基金We thank the National Natural Science Foundation of China. The foundation of the Ministry of Science and Technology of China (grant No. G2000078104 and No. G2000077502) for financial supports.
文摘The aggregating properties of Cz-C-n (n = 3, 6, 10) have been investigated by means of fluorescence method in DMSO-H2O binary solvent. The measured CAC and C F values indicate that the aggregating tendency of the amphiphilic compounds Cz-C-n containing crown ether increases with the length of alkyl chains, similar to that of carbazole compounds with long alkyl chains.
文摘以TiCl_3(3THF)为原料合成脒基钛(Ⅲ)配合物1,将其作为前驱体通过LPCVD沉积N/C-TiO_2薄膜。利用1HNMR、元素分析以及热重分析(TGA)探究配合物1的结构和热化学性质。结果表明,配合物1具有良好的热稳定性和合适的挥发性,满足CVD的要求。通过EDS和UV-Vis吸收光谱表征了薄膜的成分及光学性能,结果表明,当沉积温度为350℃时,N/C-TiO_2薄膜的N、C质量分数最高,其禁带宽度降低为2. 82 e V,对可见光的吸收最强。与纯的二氧化钛薄膜相比,N/C-TiO_2薄膜对亚甲基蓝的降解率显著提高到90%。
