Facile preparation of a three-dimensional macroporous graphene wrapped cuprous oxide composite by one-step hydrothermal assembly for stable and sensitive hydrogen peroxide detection

2016 ◽  
Vol 8 (40) ◽  
pp. 7405-7412 ◽  
Author(s):  
Guangran Ma ◽  
Min Yang ◽  
Guochun Zhao ◽  
Yanping Zhang ◽  
Fugang Xu ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Cuprous Oxide ◽  
Three Dimensional ◽  
One Pot ◽  
Oxide Composite ◽  
Hydrogen Peroxide Detection ◽  
One Step ◽  
Facile Preparation

A facile one-pot hydrothermal assembly approach was developed to prepare a novel three-dimensional macroporous graphene wrapped Cu2O composite (3D-p-rGO–Cu2O) for the electrochemical detection of H2O2.

Hydrothermally driven three-dimensional evolution of mesoporous hierarchical europium oxide hydrangea microspheres for non-enzymatic sensors of hydrogen peroxide detection

2016 ◽  
Vol 3 (4) ◽  
pp. 701-706 ◽  
Author(s):  
Yibo Yan ◽  
Kaixin Li ◽  
Larissa Thia ◽  
Yihu Dai ◽  
Jun Zhao ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Hydrothermal Synthesis ◽  
Electrochemical Detection ◽  
Three Dimensional ◽  
Europium Oxide ◽  
Hydrogen Peroxide Detection

Hydrothermal synthesis of mesoporous europium oxide hierarchical hydrangea microspheres for electrochemical detection of hydrogen peroxide (H2O2) has been successfully achieved.

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.

Formation of three-dimensional nano-porous silver films and application toward electrochemical detection of hydrogen peroxide

2013 ◽  
Vol 285 ◽  
pp. 185-189 ◽  
Author(s):  
Junpeng Fan ◽  
Xiufang Bian ◽  
Yuchao Niu ◽  
Yanwen Bai ◽  
Xinxin Xiao ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrochemical Detection ◽  
Three Dimensional ◽  
Silver Films ◽  
Porous Silver

Facile preparation of cuprous oxide decorated mesoporous carbon by one-step reductive decomposition for deep desulfurization

Fuel ◽  
2019 ◽  
Vol 241 ◽  
pp. 777-785 ◽  
Author(s):  
Xusheng Jiang ◽  
Wenli Xu ◽  
Wei Liu ◽  
Mingbo Yue ◽  
Yuzhang Zhu ◽  
...  
Keyword(s):  
Cuprous Oxide ◽  
Mesoporous Carbon ◽  
Reductive Decomposition ◽  
Deep Desulfurization ◽  
One Step ◽  
Facile Preparation

Facile preparation of polysilsesquioxane sheet with three-dimensional structure

2021 ◽  
Author(s):  
Meng Li ◽  
Bin Hao ◽  
Linsheng Zhang ◽  
Hui Li ◽  
Peng Lv ◽  
...  
Keyword(s):  
Room Temperature ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
One Pot ◽  
Three Dimensional Structure ◽  
Experimental Parameters ◽  
Facile Preparation

Polysilsesquioxane (PSQ) sheet with novel three-dimensional (3-D) networks was prepared by a one-pot reaction of an organic silane terminated with hexadecyl functionality at room temperature. The effects of experimental parameters...

scholarly journals From two-dimensional graphene oxide to three-dimensional honeycomb-like Ni 3 S 2 @graphene oxide composite: insight into structure and electrocatalytic properties

2017 ◽  
Vol 4 (12) ◽  
pp. 171409 ◽  
Author(s):  
Xinting Wei ◽  
Yueqiang Li ◽  
Wenli Xu ◽  
Kaixuan Zhang ◽  
Jie Yin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Three Dimensional ◽  
Charge Transfer Resistance ◽  
Photoelectrochemical Cells ◽  
One Pot ◽  
Transfer Resistance ◽  
3D Graphene ◽  
Practical Applications ◽  
Oxide Composite ◽  
Solar Water Splitting

Three-dimensional (3D) graphene composites have drawn increasing attention in energy storage/conversion applications due to their unique structures and properties. Herein, we synthesized 3D honeycomb-like Ni 3 S 2 @graphene oxide composite (3D honeycomb-like Ni 3 S 2 @GO) by a one-pot hydrothermal method. We found that positive charges of Ni 2+ and negative charges of NO 3 − in Ni(NO 3 ) 2 induced a transformation of graphene oxide with smooth surface into graphene oxide with wrinkled surface (w-GO). The w-GO in the mixing solution of Ni(NO 3 ) 2 /thioacetamide/H 2 O evolved into 3D honeycomb-like Ni 3 S 2 @GO in solvothermal process. The GO effectively inhibited the aggregation of Ni 3 S 2 nanoparticles. Photoelectrochemical cells based on 3D Ni 3 S 2 @GO synthesized at 60 mM l −1 Ni(NO 3 ) 2 exhibited the best energy conversion efficiency. 3D Ni 3 S 2 @GO had smaller charge transfer resistance and larger exchange current density than pure Ni 3 S 2 for iodine reduction reaction. The cyclic stability of 3D honeycomb-like Ni 3 S 2 @GO was good in the iodine electrolyte. Results are of great interest for fundamental research and practical applications of 3D GO and its composites in solar water-splitting, artificial photoelectrochemical cells, electrocatalysts and Li-S or Na-S batteries.

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