Anion-regulated cobalt coordination polymer: Construction, electrocatalytic hydrogen evolution and L-cysteine electrochemical sensing

Wu, Huilu; Shen, Qian; Dong, Jianping; Zhang, Geng; Sun, Fugang; Li, Ruixue

doi:10.1016/j.electacta.2022.140442

Cited by 12 publications

(2 citation statements)

References 82 publications

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“…The L-cysteine measurement technology for clinical and commercial purposes is still under research, and the development of low-cost, simple, and highly sensitive L-cysteine detectors has become a key task in the food, biological, and medical fields [ 8 ]. At present, there are many detection methods for L-cysteine, mainly including high-performance liquid chromatography [ 9 ], colorimetric detection [ 10 ], flow injection analysis (FIA) [ 11 ], photoelectrochemical (PEC) sensors [ 12 ], fluorescence spectroscopy [ 13 ], and electrochemical detection techniques [ 14 , 15 , 16 ]. Among these methods, most of them have drawbacks, such as a complex sample preparation process, expensive precision instruments, inconvenient operation, or low sensitivity, which greatly limit their application in practical detection.…”

Section: Introductionmentioning

confidence: 99%

Spherical Silver Nanoparticles Located on Reduced Graphene Oxide Nanocomposites as Sensitive Electrochemical Sensors for Detection of L-Cysteine

Hua,

Yao,

Yao

2024

Sensors

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A new, simple, and effective one-step reduction method was applied to prepare a nanocomposite with spherical polycrystalline silver nanoparticles attached to the surface of reduced graphene oxide (Ag@rGO) at room temperature. Equipment such as X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Fourier transform infrared spectroscopy (FTIR) was used to characterize the morphology and composition of the Ag@rGO nanocomposite. A novel electrochemical sensor for detecting L-cysteine was proposed based on fixing Ag@rGO onto a glassy carbon electrode. The electrocatalytic behavior of the sensor was studied via cyclic voltammetry and amperometry. The results indicate that due to the synergistic effect of graphene with a large surface area, abundant active sites, and silver nanoparticles with good conductivity and high catalytic activity, Ag@rGO nanocomposites exhibit significant electrocatalytic activity toward L-cysteine. Under optimal conditions, the constructed Ag@rGO electrochemical sensor has a wide detection range of 0.1–470 μM for L-cysteine, low detection limit of 0.057 μM, and high sensitivity of 215.36 nA M−1 cm−2. In addition, the modified electrode exhibits good anti-interference, reproducibility, and stability.

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Section: Introductionmentioning

confidence: 99%

Spherical Silver Nanoparticles Located on Reduced Graphene Oxide Nanocomposites as Sensitive Electrochemical Sensors for Detection of L-Cysteine

Hua,

Yao,

Yao

2024

Sensors

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“…Hydrogen energy was a kind of pollution-free renewable energy, which has the advantages of light weight, high energy density and environment-friendly [6-8]. Among various hydrogen production technologies, hydrogen production by electrolysis of water was of great signi cance for solving energy crisis and environmental problems [9][10][11]. To improve the e ciency of hydrogen production from water electrolysis, many researchers were working on developing electrocatalysts with e cient hydrogen evolution reactions [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Ni(II) Complex Based on Imidazole Dicarboxylic Acid as a Promising Electrocatalyst for Hydrogen Evolution Reaction and H2O2-Sensing

Tang,

Gao,

et al. 2024

Electrocatalysis

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A new mononuclear Ni(II) complex, [Ni(p-MOPhH 2 IDC) 2 (H 2 O) 2 ], was synthesized by the reaction of p-MOPhH 3 IDC (2-(4-methoxyphenyl)-1H-imidazole-4,5-dicarboxylic acid) and Ni(NO 3 ) 2 •6H 2 O under solvothermal conditions and characterized by single-crystal X-ray diffraction, elemental analysis, IR and UV-vis spectroscopy. The structure analysis revealed that the nickel center was six-coordinated octahedron coordination geometry. The electrochemical properties of the Ni(II) complex-doped carbon paste electrode (Ni-CPE) were investigated. For electrocatalytic HER (hydrogen evolution reaction), linear sweep voltammetry curves at different temperatures were determined. The polarization curve shows that the η 10 298K (overpotential, 10 mA cm -2 ) of the Ni-CPE was positively shifted by 265 mv compared with the bare-CPE (without complex). The Tafel slope of the Ni-CPE was 187 mV dec -1 . These indicated that the Ni-CPE was effective for HER electrocatalytic reaction. In addition, the electrochemical sensing performances of the Ni-CPE towards H 2 O 2 were found to have a linear response from 0.5 μM to 4.0 mM with a detection limit of 0.036 μM. The information obtained from this study will help to expand the application of Ni(II) complex in the eld of electrochemistry.

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Design and fabrication of novel coordination polymers containing Co(II), Ni(II), and Cu(II) for electrochemical detection of both ascorbic acid and Cr(VI)

Li,

Wang,

Gao

et al. 2023

Transit Met Chem

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Anion-regulated cobalt coordination polymer: Construction, electrocatalytic hydrogen evolution and L-cysteine electrochemical sensing

Cited by 12 publications

References 82 publications

Spherical Silver Nanoparticles Located on Reduced Graphene Oxide Nanocomposites as Sensitive Electrochemical Sensors for Detection of L-Cysteine

Spherical Silver Nanoparticles Located on Reduced Graphene Oxide Nanocomposites as Sensitive Electrochemical Sensors for Detection of L-Cysteine

Ni(II) Complex Based on Imidazole Dicarboxylic Acid as a Promising Electrocatalyst for Hydrogen Evolution Reaction and H2O2-Sensing

Design and fabrication of novel coordination polymers containing Co(II), Ni(II), and Cu(II) for electrochemical detection of both ascorbic acid and Cr(VI)

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