发光学报, 2015, 36 (2): 141, 网络出版: 2015-02-15
水热合成碳颗粒的结构和发光性能
Structure and Photoluminescence Properties of Carbon Particles Synthesized by Hydrothermal Method
摘要
用生物试剂氨基葡萄糖盐酸盐和葡萄糖在水溶液中合成了碳颗粒, 用场发射扫描电子显微镜、高分辨透射电子显微镜、显微Raman光谱仪和傅立叶红外光谱仪对样品的结构和组成进行了研究。结果表明, 碳颗粒是球形非晶结构, 直径为0.3~1.4 μm。利用He-Cd激光器的325 nm线, 在显微Raman 光谱仪中对碳颗粒的光致发光(PL)性能进行了研究。光谱显示出中心在420 nm的弱的蓝色PL带、中心在575 nm和650 nm的强而宽的绿光和红光PL带, 它们分别与官能团和带与带之间的跃迁有关。绿光和红光PL带的宽化与sp2碳颗粒的非均匀性有关。
Abstract
Carbon particles were synthesized in aqueous solution of the biological reagents D-(+)-glucosamine-HCl and glucose. The structure and composition of synthesized carbon particles were investigated using field emission scanning electron microscope, high-resolution transmission electron microscope, micro-Raman spectroscope and Fourier transform infrared spectroscope. The results indicate that the carbon particles are formed in the spherical shape and amorphous structure with diameter of 0.3-1.4 μm. The photoluminescence (PL) of carbon particles were studied in micro-Raman spectroscopy using the 325 nm line of He-Cd laser. The PL spectra show a weak blue PL band centered at 420 nm and two strong and wide green and red PL bands centered at 575 and 650 nm, which are related to the functional groups and the transition between two bands. The broadening of green and red PL bands is related to the diversity of sp2 clusters.
王必本, 朱满康, 汪浩, 李琳, 王毅. 水热合成碳颗粒的结构和发光性能[J]. 发光学报, 2015, 36(2): 141. WANG Bi-ben, ZHU Man-kang, WANG Hao, LI Lin, WANG Yi. Structure and Photoluminescence Properties of Carbon Particles Synthesized by Hydrothermal Method[J]. Chinese Journal of Luminescence, 2015, 36(2): 141.