Ultrathin plasmonic PtCu nanosheets as an efficient peroxidase-like nanozyme for colorimetric detection of H2O2

Zhi Cao; Fei Mu; Qianshi Shang; Yi Chen; Peiyao Zhang; Feiyu Chen; Chuang Shen; Faisal Saleem; Zhimin Luo; Ying Zhang

doi:10.1039/D5AY01909E

Ultrathin plasmonic PtCu nanosheets as an efficient peroxidase-like nanozyme for colorimetric detection of H₂O₂

Zhi Cao,^a Fei Mu,^b Qianshi Shang,^b Yi Chen,^b Peiyao Zhang,^b Feiyu Chen,^b Chuang Shen,^b Faisal Saleem,*^c Zhimin Luo

*^b and Ying Zhang*^b

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* Corresponding authors

^a School of Food and Bioengineering, Fujian Polytechnic Normal University, Fujian Universities and Colleges Engineering Research Center of Modern Facility Agriculture, Fuqing 350300, China

^b State Key Laboratory of Flexible Electronics (LoFE), Jiangsu Key Laboratory of Smart Biomaterials and Theranostic Technology, Institute of Advanced Materials (IAM), College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), School of Chemistry and Life Sciences, Nanjing University of Posts and Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
E-mail: iamzmluo@njupt.edu.cn, yingzhang@njupt.edu.cn

^c Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, China
E-mail: iamfaisalsaleem@njtech.edu.cn

Abstract

Bimetallic PtCu nanosheets were synthesized as a nanozyme with remarkable peroxidase-like catalytic activity for colorimetric detection of H₂O₂ in milk. In an analytical application, they demonstrated a wide linear range (0.001–5 mM) and a low limit of detection (0.58 µM), as well as a good anti-interference performance.

This article is part of the themed collection: Analytical Methods HOT Articles 2025

Analytical Methods

Ultrathin plasmonic PtCu nanosheets as an efficient peroxidase-like nanozyme for colorimetric detection of H₂O₂

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Ultrathin plasmonic PtCu nanosheets as an efficient peroxidase-like nanozyme for colorimetric detection of H₂O₂

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