NiFe2O4/CNTs fabricated by atomic layer deposition as highly stable peroxidase mimics for sensitive colorimetric detection of hydrogen peroxide and glucose. (March 2022)

• Record Type: Journal Article
• Authors: Wu, Lihong; Zhou, Xuechun; Wan, Gengping; Shi, Shaohua; Wang, Guizhen
• Is Part Of: Materials research bulletin. Volume 147(2022)
• Publication Date: 2022-03
• Subjects: Peroxidase mimics -- Glucose -- Atomic layer deposition -- NiFe2O4/CNT nanocomposites -- Colorimetric detection; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2021.111637
• Languages: English
• ISSNs: 0025-5408

Abstract

Highlights: Ultrathin NiFe2 O4 coating on carbon nanotubes (NiFe2 O4 /CNTs) was obtained using an atomic layer deposition method. NiFe2 O4 /CNTs exhibited highly efficient peroxidase-like activity. The peroxidase-like activity of NiFe2 O4 /CNTs was maintained well over a wide range of temperature. A simple approach was developed for the colorimetric detection of glucose with a low detection limit and a wide linear range. Abstract: Developing peroxidase mimics with high sensitivity and good stability is highly desired to meet broad practical requirements. In this work, the ultrathin NiFe2 O4 coating on carbon nanotubes (NiFe2 O4 /CNTs) was obtained using an atomic layer deposition (ALD) method. The investigation on peroxidase-like performance indicated that the prepared 100NiFe2 O4 /CNTs nanocomposites exhibited highly efficient peroxidase-like activity. In particular, the peroxidase-like activity of 100NiFe2 O4 /CNTs was maintained well over a wide range of temperature. On the basis of its high peroxidase-like activity, a simple and effective approach was developed for the colorimetric detection of glucose with a detection limit of 2.2 μM and a linear detection range from 5 to 60 μM. The established method was successfully applied to the determination of glucose in juice samples with satisfactory results. Graphical abstract: Image, graphical abstract