Copper(II)-coated Fe3O4 nanoparticles as an efficient enzyme mimic for colorimetric detection of hydrogen peroxide

In this work, cystine–glucose Maillard conjugates were composited with Cu1.8S microspheres (Cu1.8S–cgmc) to achieve higher sensitivity for the colorimetric analysis.

Download Full-text

Colorimetric detection of hydrogen peroxide and glucose using the magnetic mesoporous silica nanoparticles

Talanta ◽

10.1016/j.talanta.2014.12.013 ◽

2015 ◽

Vol 134 ◽

pp. 712-717 ◽

Cited By ~ 41

Author(s):

Yonghong Wang ◽

Bo Zhou ◽

Shun Wu ◽

Kemin Wang ◽

Xiaoxiao He

Keyword(s):

Hydrogen Peroxide ◽

Mesoporous Silica ◽

Silica Nanoparticles ◽

Mesoporous Silica Nanoparticles ◽

Colorimetric Detection ◽

Magnetic Mesoporous Silica

Download Full-text

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

Materials Research Bulletin ◽

10.1016/j.materresbull.2021.111637 ◽

2021 ◽

pp. 111637

Author(s):

Lihong Wu ◽

Xuechun Zhou ◽

Gengping Wan ◽

Shaohua Shi ◽

Guizhen Wang

Keyword(s):

Hydrogen Peroxide ◽

Atomic Layer Deposition ◽

Colorimetric Detection ◽

Atomic Layer ◽

Layer Deposition ◽

Peroxidase Mimics

Download Full-text

3D flower-like ferrous(II) phosphate nanostructures as peroxidase mimetics for sensitive colorimetric detection of hydrogen peroxide and glucose at nanomolar level

Talanta ◽

10.1016/j.talanta.2018.01.080 ◽

2018 ◽

Vol 182 ◽

pp. 230-240 ◽

Cited By ~ 31

Author(s):

Jingjing Guo ◽

Yan Wang ◽

Min Zhao

Keyword(s):

Hydrogen Peroxide ◽

Colorimetric Detection

Download Full-text

Controlled RAFT polymerization facilitated by a nanostructured enzyme mimic

Polymer Chemistry ◽

10.1039/c8py00832a ◽

2018 ◽

Vol 9 (35) ◽

pp. 4448-4454 ◽

Cited By ~ 12

Author(s):

Qiang Fu ◽

Hadi Ranji-Burachaloo ◽

Min Liu ◽

Thomas G. McKenzie ◽

Shereen Tan ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Hydroxyl Radicals ◽

Raft Polymerization ◽

Enzyme Mimic ◽

Organic Media

A nanostructured MOF composite was utilized as an enzyme mimic for the generation of hydroxyl radicals from hydrogen peroxide, which can subsequently initiate RAFT polymerizations in aqueous or organic media.

Download Full-text

Colorimetric detection of catalase and catalase-positive bacteria (E. coli) using silver nanoprisms

Analytical Methods ◽

10.1039/c6ay01453d ◽

2016 ◽

Vol 8 (36) ◽

pp. 6625-6630 ◽

Cited By ~ 6

Author(s):

Lili Zhao ◽

Julia Wiebe ◽

Rabia Zahoor ◽

Sladjana Slavkovic ◽

Brian Malile ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Catalase Activity ◽

Colorimetric Detection ◽

E Coli ◽

Silver Nanoprisms

The sensitivity of the formation of plasmonic silver nanoprisms to hydrogen peroxide is explored for the colorimetric detection of catalase activity in bacteria.

Download Full-text

Preparation of porphyrin modified CO9S8 nanocomposites and application for colorimetric biosensing of H2O2

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424618500918 ◽

2018 ◽

Vol 22 (09n10) ◽

pp. 935-943 ◽

Cited By ~ 11

Author(s):

Yan Gao ◽

Chunqiao Jin ◽

Miaomiao Chen ◽

Xixi Zhu ◽

Min Fu ◽

...

Keyword(s):

Hydrogen Peroxide ◽

Catalytic Activity ◽

Peroxidase Activity ◽

Catalytic Mechanism ◽

Color Change ◽

Colorimetric Detection ◽

Buffer Solution ◽

Hydrogen Peroxide Detection ◽

Steady State Kinetics ◽

One Step

Hydrogen peroxide detection has been widely applied in the fields of biology, medicine, and chemistry. Colorimetric detection of hydrogen peroxide has proven to be a fast and convenient method. In this work, 5,10,15,20-tetrakis(4-chlorophenyl) porphyrin modified Co[Formula: see text]S[Formula: see text] nanocomposites (H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text] were prepared via a facile one-step hydrothermal method. H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text] nanocomposites were demonstrated to possess an enhanced mimetic peroxidase activity toward the substrate, 3,3[Formula: see text],5,5[Formula: see text]-tetramethylbenzidine (TMB), which can be oxidized to oxTMB (oxidized TMB) in a buffer solution of hydrogen peroxide with a color change from colorless to blue. The catalytic activity of H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text] was further analyzed by steady-state kinetics, and H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text] had high affinity towards both TMB and H[Formula: see text]O[Formula: see text]. Furthermore, fluorescence and ESR data revealed that the catalytic mechanism of the peroxidase activity of H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text] is due to hydroxyl radicals generated from decomposition of H[Formula: see text]O[Formula: see text]. Based on the catalytic activity of H[Formula: see text]TClPP-Co[Formula: see text]S[Formula: see text], a sensitive colorimetric sensor of H[Formula: see text]O[Formula: see text] with a detection limit of 6.803 [Formula: see text]M as well as a range of 7–100 [Formula: see text]M was designed.

Download Full-text