热熔还原法制备超硬复合相氮化碳及其工艺探索  

Preparation and Process Exploration of Superhard Carbon Ntride by Hot Melt Reduction Method

作　　者：廖和杰 吉钰纯 王吉林[1,2] 郑国源[1,2] 龙飞 周炳[1,2] 邹正光 LIAO He-jie;JI Yu-chun;WANG Ji-lin;ZHENG Guo-yuan;LONG Fei;ZHOU Bing;ZOU Zheng-guang(School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China;Key Laboratory of Nonferrous Materials and New Processing Technology of Ministry of Education, Guilin 541004, China)

机构地区：[1]桂林理工大学材料科学与工程学院,桂林541004 [2]有色金属及材料加工新技术教育部重点实验室,桂林541004

出　　处：《人工晶体学报》2018年第12期2522-2526,2581,共6页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51741204);广西自然科学基金(2016GXNSFBA380155);广西自然科学基金创新研究团队项目(2014GXNSFFA118004);广西特聘专家基金项目(2015B017)

摘　　要：本文采用热熔还原法,以聚氯乙烯、氯化铵、氧化铁为原料制备复合超硬相氮化碳(α/β-C3N4)。采用X射线衍射仪(XRD)、扫描电子显微镜(SEM)以及透射电子显微镜(TEM)对样品进行表征。在此基础上分析了不同温度和原料配比下合成复合相C_3N_4的物相组成及形貌变化。结果表明样品形貌随着原料配比的不同在颗粒、棒状、纳米线之间转变。当C、N和Fe之间摩尔比为3∶4∶0. 4时,所制备出的样品呈纳米线状,纳米线的直径约为15 nm,结晶性良好。而在其它配比下,只能获得棒状或颗粒状α/β复合相C3N4。A kind of super-hard phase α/β-C3N 4 was prepared by hot melt reduction method, using polyvinyl chloride, ammonium chloride and iron oxide as raw materials. The samples were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). On this basis, the composition and morphology of composite phase nitride carbon synthesized by different temperature and raw materials were analyzed. The results show that the morphology of the sample changes between particles, rods and nanowires with the ratio of raw materials. The morphology of the prepared sample was nanowire-like when the molar ratio between C, N and Fe was 3∶4∶0.4. The diameter of the nanowire was about 15 nm. It has good crystallinity. In other proportions, rod and granular α/β composite phase C 3N 4 was prepared.

关 键 词：热熔还原法 氮化碳 纳米线 配比 

分 类 号：TB383[一般工业技术—材料科学与工程]