Colorimetric Detection of H2O2 Based on Fe7S8 Nanozyme in Mobile Phone

GU Jing-jing; LI Zhong-jie; LI Yu-hao; GONG Hai-long; MA Qin-qin; LIU Ting-ting; WANG Xue-dong

doi:10.12452/j.fxcsxb.23080601

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Colorimetric Detection of H₂O₂ Based on Fe₇S₈ Nanozyme in Mobile Phone

Scientific Papers | 更新时间：2024-02-21

- Colorimetric Detection of H₂O₂ Based on Fe₇S₈ Nanozyme in Mobile Phone
- Journal of Instrumental Analysis Vol. 43, Issue 2, Pages: 236-246(2024)
- 作者机构：
  
  1.苏州科技大学环境科学与工程学院，江苏苏州 215009
  2.江苏省环境科学与工程重点实验室，江苏苏州 215009
- 作者简介：
- 基金信息：
- DOI：10.12452/j.fxcsxb.23080601
  CLC： O657.3;TQ123.6
- Published：15 February 2024，
  
  Received：06 August 2023，
  
  Revised：21 October 2023，
- 稿件说明：
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顾婧婧,李钟杰,李宇浩等.基于Fe₇S₈纳米酶的H₂O₂手机可视化比色检测[J].分析测试学报,2024,43(02):236-246.

GU Jing-jing,LI Zhong-jie,LI Yu-hao,et al.Colorimetric Detection of H₂O₂ Based on Fe₇S₈ Nanozyme in Mobile Phone[J].Journal of Instrumental Analysis,2024,43(02):236-246.
顾婧婧,李钟杰,李宇浩等.基于Fe₇S₈纳米酶的H₂O₂手机可视化比色检测[J].分析测试学报,2024,43(02):236-246. DOI： 10.12452/j.fxcsxb.23080601.

GU Jing-jing,LI Zhong-jie,LI Yu-hao,et al.Colorimetric Detection of H₂O₂ Based on Fe₇S₈ Nanozyme in Mobile Phone[J].Journal of Instrumental Analysis,2024,43(02):236-246. DOI： 10.12452/j.fxcsxb.23080601.

摘要

铁基纳米材料因具有丰富的化合价态和活性位点，表现出良好的类过氧化物酶活性而受到广泛关注。该研究通过简单水热法合成Fe

纳米花（NFs），并基于其类过氧化物酶活性构建了用于H

高灵敏度比色检测的3，3'，5，5'-四甲基联苯胺（TMB）和H

显色体系。优化了体系的显色条件，并考察了Fe

NFs的类酶活性稳态动力学及催化机理。在0.001~9 mmol/L和9~70 mmol/L范围内，H

浓度与652 nm处的吸光度值呈现良好的线性关系，对应的检出限分别为0.33 μmol/L和3 mmol/L。同时方法具有良好的抗干扰能力。通过结合拍照暗箱装置和色值分析软件（Thing Identify），实现了基于智能手机的H

可视化检测，并成功用于实际水样检测。开发的智能手机可视化比色检测方法具有操作简便、成本低等特点，为实际场景中H

的检测提供了一种可行的选择。

Abstract

Iron-based nanomaterials have attracted plentiful eyes owing to their rich valency states and active sites，and thus possess superior peroxidase-like activity. Herein，Fe

nanoflowers（NFs） were successfully fabricated by a facile hydrothermal approach and applied for the development of a highly sensitive colorimetric detection for hydrogen peroxide（H

）. The as-constructed approach was based on the chromogenic reaction between 3，3'，5，5'-tetramethylbenzidine（TMB） and H

.The analysis conditions of the system were optimized， and the steady-state kinetic assay and catalytic mechanism of the Fe

NFs enzyme-like activity were also investigated.In the range of 0.001-9 mmol/L and 9-70 mmol/L，H

concentration showed a good linear relationship with the absorbance value at 652 nm，and the corresponding detection limits were 0.33 μmol/L and 3 mmol/L，respectively. The method had a wide linear range，low detection limits and good anti-interference ability. Integrated with an image-acquiring dark device and colorimetric assay software（Thing Identify），the method based on smartphone was realized and successfully used in actual water samples. Overall，this intelligent and visual colorimetric assay has the advantages of simple operation and low preparation cost，and thus provides a feasible choice for H

assay in real-world samples.

关键词

Fe7S8纳米花比色法过氧化氢智能手机可视化水样

Keywords

Fe7S8 nanoflowerscolorimetric detectionhydrogen peroxidesmartphone-based colorimetric assaywater

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