[1]杭祖圣,谈玲华,黄玉安,等.半封闭一步热解法制备层状类石墨相C_3N_4及其性能表征[J].南京理工大学学报(自然科学版),2011,(02):273-278.
 HANG Zu-sheng,TAN Ling-hua,HUANG Yu-an,et al.Preparation and Characterization of Layered Graphite Like C3N4 viaOne Step Pyrolysis Method in Semi-closed System[J].Journal of Nanjing University of Science and Technology,2011,(02):273-278.
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半封闭一步热解法制备层状类石墨相C_3N_4及其性能表征
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
期数:
2011年02期
页码:
273-278
栏目:
出版日期:
2011-04-30

文章信息/Info

Title:
Preparation and Characterization of Layered Graphite Like C3N4 viaOne Step Pyrolysis Method in Semi-closed System
作者:
杭祖圣12谈玲华12黄玉安2居法银1应三九1
1. 南京理工大学化工学院江苏南京210094; 2. 南京工程学院材料工程学院江苏南京211167
Author(s):
HANG Zu-sheng12TAN Ling-hua12HUANG Yu-an2JU Fa-yin1YING San-jiu1
1.School of Chemical Engineering,NUST,Nanjing 210094,China;2.College of Material Engineering,Nanjing Institute of Technology,Nanjing 211167,China
关键词:
三聚氰胺 半封闭 热解 层状类石墨相C3N4
Keywords:
melamine semiclosed system pyrolysis layered graphite like C3N4
分类号:
TB303
摘要:
在半封闭系统中一步热解三聚氰胺,采用X射线衍射(XRD)、透射电子显微镜(TEM)、化学元素分析(EA)、傅里叶红外光谱(FTIR)和X射线光电子能谱(XPS)分析热解产物的结构和形貌,并用热重分析(TG)和荧光分析(PL)研究了产物的热稳定性和荧光性质。XRD分析表明随着热解温度的提高,产物由Melem逐步转变为石墨相结构;FTIR和XPS分析结果表明,产物主要由含有大量sp2C—N双键和sp3C—N单键的碳氮结构组成;TEM照片显示产物具有多层结构。研究结果显示,当热解温度达到650℃时,可以获得碳氮量比为0.738的类石墨相结构C3N4。所制备的C3N4起始热分解温度达到700℃,在460 nm具有较大半峰宽的荧光吸收峰。该文研究为大规模制备类石墨相C3N4提供了一种新方法。
Abstract:
Melamine is one-step pyrolyzed in a semi-closed system.The structures and morphologies of the products are characterized by X-ray diffractomer(XRD),transmission electron microscopy(TEM),elements analysis(EA),Fourier transform infrared spectroscpy(FTIR) and X-ray photoelectron spectroscopy(XPS).The thermal stabilities and fluorescence propertities of the products are studied by thermogravimetry analysis(TG) and photoluminescence(PL).The XRD reveals that with the increase of the pyrolysis temperature,the products can be transformed from melem to graphitic structure.The analytical results of the FTIR and XPS show the product is mainly composed of carbonitrides with a large amount of sp2C-N double bond and sp3C-N single bond.The TEM image indicates the product has multi-layered structures.The above analytical results show that the graphite like C3N4 with the atomic ratio of 0.738 for C to N is obtained at 650 ℃.The onset decomposition temperature of the product is beyond 700 ℃ and the photoluminescence is observed at 460 nm with a broad full width at the half maximum.This work might provide a new route for large-scalely preparing graphite like C3N4.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:国家安全重大基础研究项目( 51340030202) 作者简介:杭祖圣( 1981 - ) ,男,博士生,讲师,主要研究方向: 三聚氰胺相关材料制备及性能,E-mail: xbhzstq@ gmail. com; 通讯作者: 应三九( 1966 - ) ,男,博士,副研究员,主要研究方向: 含能材料装药技术。
更新日期/Last Update: 2012-04-30