Exceptional peroxidase-like activity of an iron and copper based organic framework nanosheet for consecutive colorimetric biosensing of glucose and kanamycin in real food samples

Abstract

Two-dimensional Metal-Organic Framework nanosheets are attractive for peroxidase mimic nanocatalyst due to their rich chemical functional group, large surface area, high porosity, and accessible active sites. In this study, we...

A reusable fiber-embedded microfluidic chip for rapid and sensitive on-site detection of kanamycin residues in water environments

“…Rapid on-site quantitative detection of KANA was achieved using this fiber-embedded microfluidic chip, which has high sensitivity, selectivity, and stability. Compared with other chips, 4,12,[24][25][26] the fiberembedded microfluidic chip has several significant features. First, the reusable fiber-embedded microfluidic chip, functioning as both a biorecognition element and an optical transducer, is characterized by greatly simplified fabrication and packaging in traditional chips.…”

“…1,2 However, its overuse and abuse have caused increased pollution in water environments and has been detected in various water bodies. 3,4 KANA can bioaccumulate in the body through the food chain and produce antibiotic resistance and other harmful effects, including ototoxicity, nephrotoxicity, and allergic reactions. [5][6][7] In line with this, many countries have enacted strict regulations for reducing KANA residues in water environments.…”

Colorimetric and electrochemical dual-mode uric acid determination utilizing peroxidase-mimicking activity of CoCu bimetallic nanoclusters

“…37 P. Perumal et al synthesized FeCu bifunctional 2D MOF nanosheets with excellent peroxidase-like activity by a solvothermal method, and used them for the construction of colorimetric biosensors for glucose and kanamycin, which showed good selectivity and sensitivity. 38 Du et al synthesized Co(OH) 2 nanoparticles (NPs)/three-dimensional graphene framework (3DGF) nanomaterials by electrochemical methods for the determination of glucose. 39 Huang et al doped gold nanoparticles into Cu-MOF nanosheets to develop a highly active dual nanozyme amplified system, as an electrode material for detecting H 2 O 2 in cancer cells.…”

Peroxidase activity of a Cu–Fe bimetallic hydrogel and applications for colorimetric detection of ascorbic acid

“…16,17 Recently, functional nanomaterials with enzyme-like activity, such as metal nanoparticles, oxide nanoparticles, carbon nanotubes, and metal–organic frameworks (MOFs), have been discovered and used as functional artificial enzymes. 18–25 Nevertheless, there are few metallohydrogels reported to be enzyme-mimetic materials. 26…”