Synthesis of copper sulfide nanorods as peroxidase mimics for the colorimetric detection of hydrogen peroxide

2015 ◽  
Vol 7 (13) ◽  
pp. 5454-5461 ◽  
Author(s):  
Jufang Guan ◽  
Juan Peng ◽  
Xiaoyong Jin
Keyword(s):  
Hydrogen Peroxide ◽  
Copper Sulfide ◽  
Colorimetric Detection ◽  
Peroxidase Mimics

Copper sulfide (CuS) nanorods were synthesized and used as peroxidase mimics for the colorimetric detection of H2O2.

Carbon–nitrogen conjugate-composited Cu1.8S with enhanced peroxidase-like activity for the colorimetric detection of hydrogen peroxide and glutathione

2021 ◽  
Vol 13 (14) ◽  
pp. 1706-1714
Author(s):  
Nianlu Li ◽  
Mingquan Zhu ◽  
Zhenyu Feng ◽  
Wenhui Lu ◽  
Jing Chen ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Colorimetric Detection ◽  
Colorimetric Analysis ◽  
Higher Sensitivity

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

Ultrasmall Pt Nanoclusters as Robust Peroxidase Mimics for Colorimetric Detection of Glucose in Human Serum

2017 ◽  
Vol 9 (11) ◽  
pp. 10027-10033 ◽  
Author(s):  
Lihua Jin ◽  
Zheng Meng ◽  
Yongqing Zhang ◽  
Shijie Cai ◽  
Zaihua Zhang ◽  
...  
Keyword(s):  
Human Serum ◽  
Colorimetric Detection ◽  
Pt Nanoclusters ◽  
Peroxidase Mimics

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

2016 ◽  
Vol 8 (36) ◽  
pp. 6625-6630 ◽  
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.

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

2018 ◽  
Vol 22 (09n10) ◽  
pp. 935-943 ◽  
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.

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