In-situ Preparation of Metal-organic Framework [Zn(BDC)(H2O)2]n

Films and Reversible Detection of Nitrobenzenes

LI Zong-qun; ZHANG Min; XUE Wen; QIU Ling-guang

doi:10.3788/fgxb20113205.0514

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In-situ Preparation of Metal-organic Framework [Zn(BDC)(H₂O)₂]_n Films and Reversible Detection of Nitrobenzenes

paper | 更新时间：2020-08-12

- In-situ Preparation of Metal-organic Framework [Zn(BDC)(H₂O)₂]_n Films and Reversible Detection of Nitrobenzenes
- Chinese Journal of Luminescence Vol. 32, Issue 5, Pages: 514-518(2011)
- 作者机构：
  
  1. 蚌埠学院应用化学与环境工程系,安徽蚌埠,233000
  2. 安徽大学化学化工学院先进多孔材料实验室,安徽合肥,230039
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20113205.0514
  CLC： O484.31;O614.24+1
- Received：12 November 2010，
  
  Revised：26 February 2011，
  
  Published Online：22 May 2011，
  
  Published：22 May 2011
- 稿件说明：
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李宗群, 张敏, 薛文, 裘灵光. 金属-有机骨架[Zn(BDC)(H2O)2]n膜的原位制备及其对硝基苯类有机物的可逆检测[J]. 发光学报, 2011,32(5): 514-518

LI Zong-qun, ZHANG Min, XUE Wen, QIU Ling-guang. In-situ Preparation of Metal-organic Framework [Zn(BDC)(H2O)2]n,,Films and Reversible Detection of Nitrobenzenes[J]. Chinese Journal of Luminescence, 2011,32(5): 514-518
李宗群, 张敏, 薛文, 裘灵光. 金属-有机骨架[Zn(BDC)(H2O)2]n膜的原位制备及其对硝基苯类有机物的可逆检测[J]. 发光学报, 2011,32(5): 514-518 DOI： 10.3788/fgxb20113205.0514.

LI Zong-qun, ZHANG Min, XUE Wen, QIU Ling-guang. In-situ Preparation of Metal-organic Framework [Zn(BDC)(H2O)2]n,,Films and Reversible Detection of Nitrobenzenes[J]. Chinese Journal of Luminescence, 2011,32(5): 514-518 DOI： 10.3788/fgxb20113205.0514.

摘要

采用水热法

将锌片与对苯二甲酸(H

BDC)反应原位合成[Zn(BDC)(H

]

薄膜。利用XRD和SEM分别对薄膜的结构、形貌和尺寸等进行了表征。结果表明

薄膜是由一维链状结构的金属-有机骨架材料纳米晶构成的

随着水热时间的增加

薄膜中的[Zn(BDC)(H

]

纳米晶晶粒尺寸逐渐减小。该薄膜在紫外光的激发下可发出较强的荧光

硝基化合物会对薄膜的荧光产生强烈的猝灭作用

响应速率快并具有可逆性。硝基化合物的体积在0.25~2%之间时

猝灭效率呈线性关系

表明薄膜对硝基苯类有机污染物具有高效、高灵敏度的传感性能。

Abstract

[Zn(BDC)(H

O)]

metal-organic framework films have been synthesized on the surface of zinc substrate by a hydrothermal reaction between zinc slice and 1

4-benzenedicarboxylic acid (H

BDC) at 140 ℃ for different reaction times. The films were characterized and analyzed with X-ray powder diffraction (XRD) and scanning electron microscopy (SEM). The results showed that the films were constructed from nano- or microcrystals of [Zn(BDC)(H

]

a one-dimensional zig-zag type MOF. With increasing the hydrothermal reaction time

the particle sizes reduced gradually and then the nanoscaled crystals of [Zn(BDC)-(H

]

films were obtained after 12 h. The formation mechanism of the films on the zinc substrate was preliminarily discussed. All samples of the films exhibited strong solid state fluorescence at room temperature with an emission maximum at 395 nm under excitation of 332 nm. Strong fluorescence quenching of the films was observed due to energy transfer between nitrobenzene quenchers and the MOFs chains through the electrostatic interaction. Fluorescence quenching efficiency increased linearly with the concentration of nitrobenzene in 0.25~2%

which indicate this film has a high efficiency

fast response

and reversible for nitrobenzene.

关键词

Keywords

references

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