Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol

Yu ZOU; Ming-yu TANG; Yao-yao QU; Fang ZHANG; Fang CHAI

doi:10.37188/CJL.20210200

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Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol

Invited Paper | 更新时间：2021-09-03

- Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 8, Pages: 1297-1306(2021)
- 作者机构：
  
  1.哈尔滨师范大学化学化工学院　光化学生材料与储能材料黑龙江省重点实验室，黑龙江　哈尔滨　 150025
  2.北部湾海洋新材料研究院，广西　北海　 536015
- 作者简介：
- 基金信息：
  
  Science and Technology Program of Beihai(202082024)
- DOI：10.37188/CJL.20210200
  CLC： O482.31;O657.3
- Received：30 May 2021，
  
  Revised：16 June 2021，
  
  Published：01 August 2021
- 稿件说明：
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Yu ZOU, Ming-yu TANG, Yao-yao QU, et al. Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol[J]. Chinese journal of luminescence, 2021, 42(8): 1297-1306.
DOI：

Yu ZOU, Ming-yu TANG, Yao-yao QU, et al. Blue Emitted Carbon Dots as Fluorescent Probes for Detection of 4-nitrophenol and 2-nitrophenol[J]. Chinese journal of luminescence, 2021, 42(8): 1297-1306. DOI： 10.37188/CJL.20210200.

摘要

硝基苯酚被视作严重的污染物，特别是对硝基苯酚(4-NP)和邻硝基苯酚(2-NP)，作为制药工业的重要原料，它们在水中溶解性好、稳定性强，会对环境中的水体造成严重的威胁，因此，检测和监测水体中的4-NP和2-NP至关重要。利用水热法将巯基丁二酸作为碳源，制备出蓝色荧光碳点(MSA-CDs)，在340 nm处激发，碳点在437 nm 得到最佳发射，荧光量子产率为32%，荧光寿命为9.65 ns。在本研究中，蓝色荧光碳点可以作为荧光探针，对4-NP和2-NP有特殊的响应，使碳点的荧光强度发生明显的减弱，检测限分别为18.3 nmol/L和24.0 nmol/L。该碳点可以在实际水样中检测4-NP和2-NP并得到较理想的回收率，说明碳点具备更为广泛的应用优势及可能性。

Abstract

Nitrophenols are regarded as serious pollutants

especially 2-nitrophenol(2-NP) and 4-nitrophenol(4-NP)

deriving from processing and manufacturing as well as being used as raw materials for pharmaceutical industry. They have been proved as a crucial threat to environmental waters due to their good solubility

strong stability

high toxicity

and carcinogenicity. Blue fluorescent carbon dots(MSA-CDs) have been prepared by hydrothermal method using mercaptosuccinic acid as carbon resource. The CDs emitted blue fluorescence emission at 437 nm excited at 340 nm

with quantum yield(QY) of 32%. In this work

the CDs exhibited specific responses to 4-NP and 2-NP. CDs can be used as a fluorescent probe

and showed clear fluorescence quenching in presence of 4-NP and 2-NP with the detection limits of 4-NP and 2-NP at 18.3 nmol/L and 24.0 nmol/L

respectively. The CDs can be used to recognize 4-NP and 2-NP in actual water with high recovery

which indicates that the CDs exhibit more extensive application advantages and possibilities.

关键词

Keywords

references

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