[1]葛树勋,何农跃,杨春,等.MCM-41介孔分子筛光致发光机理的研究[J].东南大学学报(自然科学版),2004,34(4):504-506.[doi:10.3969/j.issn.1001-0505.2004.04.018]
 Ge Shuxun,He Nongyue,Yang Chun,et al.Investigation on photoluminescence mechanism of MCM-41[J].Journal of Southeast University (Natural Science Edition),2004,34(4):504-506.[doi:10.3969/j.issn.1001-0505.2004.04.018]
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MCM-41介孔分子筛光致发光机理的研究()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
34
期数:
2004年第4期
页码:
504-506
栏目:
数学、物理学、力学
出版日期:
2004-07-20

文章信息/Info

Title:
Investigation on photoluminescence mechanism of MCM-41
作者:
葛树勋1 何农跃1 杨春2 顾民3 胡澄3
1 东南大学分子与生物分子电子学教育部重点实验室, 南京 210096; 2 南京师范大学化学与环境科学学院, 南京 210097; 3 南京大学固体微结构国家重点实验室, 南京 210093
Author(s):
Ge Shuxun1 He Nongyue1 Yang Chun2 Gu Min3 Hu Cheng3
1 Key Laboratory of Molecular and Bio-molecular Electronics of Ministry of Education, Southeast University, Nanjing 210096, China
2 College of Chemistry and Environment Science, Nanjing Normal University, Nanjing 210097, China
关键词:
MCM-41 光致发光 缺陷 NMR
Keywords:
mobil catalytic material 41 photoluminescence defect nuclear magnetic resonance
分类号:
O433.4
DOI:
10.3969/j.issn.1001-0505.2004.04.018
摘要:
乙二胺水溶液作为碱介质合成得到纯硅MCM-41母体,然后分别于813,1 073和1 323 K温度下焙烧.结果表明,813 K焙烧后的MCM-41显示最强的光致发光强度,而1 073和1 323 K焙烧的样品仅具有微弱的光致发光效应.29Si MAS 核磁共振(NMR)结果证实了高温焙烧后硅羟基含量降低.与此同时,骨架红外(IR)谱中氧空位缺陷带消失.证实了MCM-41的光致发光强度随焙烧温度升高而下降是受硅羟基含量和氧空位缺陷带的影响.
Abstract:
As-synthesized mobil catalytic material 41(MCM-41)sample was synthesized in an ethylenediamine aqueous medium. It is shown that MCM-41 calcined at 813 K exhibits strongest photoluminescent(PL)intensity while those calcined at 1 073 K and 1 323 K only exhibit a weak photoluminescent effect. 29Si MAS nuclear magnetic resonance(NMR)spectroscopy demonstrates that the contents of silanol decreases as the calcine temperature increases. Meanwhile the oxygen-related defect sites disappear in infrared(IR)spectrum after high temperature calcination. It is proved that both the oxygen-related defect sites and silanol contents are responsible for the strong PL effect of the investigated MCM-41 samples.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目: 南京大学固体微结构国家重点实验室开放课题资助项目(MO11612)、教育部跨世纪优秀人才计划基金资助项目.
作者简介: 葛树勋(1976—),男,博士生; 何农跃(联系人),男,博士,教授,博士生导师, nyhe@seu.edu.cn.
更新日期/Last Update: 2004-07-20