Preparation of Fluorescent Porous Silicon by Chemical Etching Method and Its Application in Ag+ Detection

XIONG Xiao-li; XUE Kang; YOU Chao; JI Yu-yao; XIAO Dan

doi:10.3788/fgxb20163706.0662

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Preparation of Fluorescent Porous Silicon by Chemical Etching Method and Its Application in Ag⁺ Detection

更新时间：2020-08-12

- Preparation of Fluorescent Porous Silicon by Chemical Etching Method and Its Application in Ag⁺ Detection
- Chinese Journal of Luminescence Vol. 37, Issue 6, Pages: 662-668(2016)
- 作者机构：
  
  1. 四川师范大学化学学院,四川成都,610068
  2. 四川大学化学学院,四川成都,610065
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20163706.0662
  CLC： O482.31
- Received：16 January 2016，
  
  Revised：16 March 2016，
  
  Published：05 June 2016
- 稿件说明：
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熊小莉, 薛康, 尤超等. 化学腐蚀法制备荧光多孔硅及对Ag+的检测[J]. 发光学报, 2016,37(6): 662-668

XIONG Xiao-li, XUE Kang, YOU Chao etc. Preparation of Fluorescent Porous Silicon by Chemical Etching Method and Its Application in Ag+ Detection[J]. Chinese Journal of Luminescence, 2016,37(6): 662-668
熊小莉, 薛康, 尤超等. 化学腐蚀法制备荧光多孔硅及对Ag+的检测[J]. 发光学报, 2016,37(6): 662-668 DOI： 10.3788/fgxb20163706.0662.

XIONG Xiao-li, XUE Kang, YOU Chao etc. Preparation of Fluorescent Porous Silicon by Chemical Etching Method and Its Application in Ag+ Detection[J]. Chinese Journal of Luminescence, 2016,37(6): 662-668 DOI： 10.3788/fgxb20163706.0662.

摘要

采用简便的化学腐蚀法在45℃下制备了橘红色荧光多孔硅(PS)

通过扫描电镜(SEM)、红外光谱(FT-IR)和比表面积(BET)对PS的结构进行了表征。研究发现

能在PS上发生氧化沉积而猝灭荧光。基于此

建立了一种快速、灵敏检测Ag

的新方法。在优化实验条件下

浓度与PS的荧光强度在4.510

-8

~6.610

-7

mol/L范围内呈良好的线性关系

检测限为2.210

-8

mol/L

线性相关系数为0.9914。该方法用于水样中Ag

的检测

结果满意。

Abstract

A facile preparation of orange fluorescent porous silicon (PS) was reported using a simple chemical etching method at 45 ℃. The prepared PS samples were characterized by scanning electron microscope(SEM)

Fourier translation infrared spectrum(FT-IR) and specific surface area(BET). The results show that PS samples emit strong orange fluorescence possessing excellent photostability. Moreover

the fluorescence of PS can be effectively quenched by Ag

at room temperature.The fluorescence of PS shows a good linear relationship with the concentration of Ag

in the range of 4.510

-8

-6.610

-7

mol/L

the detection limit is 2.210

-8

mol/L

and the correlation coefficient is 0.991 4. The mechanism of Ag

-sensing in this method was further explained. Furthermore

the fluorescent Ag

sensor was applied to Ag

detection in environmental water samples

and satisfactory results were obtained.

关键词

Keywords

references

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