In-situ synthesis of ultrasmall Au nanoparticles on bimetallic metal-organic framework with enhanced electrochemical activity for estrone sensing

Chai, Chuxing; Gao, Juan; Zhao, Guoqing; Li, Lele; Tang, Yong; Wu, Can; Wan, Chidan

doi:10.1016/j.aca.2021.338242

Cited by 30 publications

(10 citation statements)

References 30 publications

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“…AuNR@ZIF-8 was further studied by high-resolution Au4f-Zn3p and Zn2p scans (Figure d,e). TheAu4f-Zn3p peak is resolved into four separated peaks, Au4f 7/2 (83.8 eV), Au4f 5/2 (87.4 eV), Zn3p 3/2 (88.7 eV), and Zn3p 1/2 (91.6 eV), which are consistent with a Au-Zn alloy. , Binding energies at 1021.6 and 1044.7 eV in the Zn 2p region can be ascribed to the Zn 2+ . These results indicate that AuNRs were successfully coated in ZIF-8.…”

Section: Resultsmentioning

confidence: 61%

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Gold Nanorods (AuNRs) and Zeolitic Imidazolate Framework-8 (ZIF-8) Core–Shell Nanostructure-Based Electrochemical Sensor for Detecting Neurotransmitters

et al. 2021

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The development of novel electrode materials for rapid and sensitive detection of neurotransmitters in the human body is of great significance for early disease diagnosis and personalized therapy. Herein, gold nanorod@zeolitic imidazolate framework-8 (AuNR@ZIF-8) core–shell nanostructures were prepared by controlled encapsulation of gold nanorods within a ZIF-8 assembly. The designed AuNR@ZIF-8 nanostructures have uniform morphology, good dispersion, a large specific surface area, and an average size of roughly 175 nm. Compared with individual ZIF-8 and AuNR-modified electrodes, the obtained core–shell-structured AuNR@ZIF-8 nanocomposite structure-modified electrode shows excellent electrocatalytic performance in the determination of dopamine (DA) and serotonin (ST). The designed AuNR@ZIF-8 exhibited a wide linear range of 0.1–50 μM and low detection limit (LOD, 0.03 μM, S/N = 3) for the determination of DA, as well as a linear range of 0.1–25 μM and low LOD (0.007 μM, S/N = 3) for monitoring ST. The improved performance is attributed to the synergistic effect of the high conductivity of AuNRs and multiple catalytic sites of ZIF-8. The good electroanalytical ability of AuNR@ZIF-8 for detection of DA and ST can provide a guide to efficiently and rapidly monitor other neurotransmitters and construct novel electrochemical sensors.

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Section: Resultsmentioning

confidence: 61%

“…47,48 Binding energies at 1021.6 and 1044.7 eV in the Zn 2p region can be ascribed to the Zn 2+ . 49 These results indicate that AuNRs were successfully coated in ZIF-8.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Gold Nanorods (AuNRs) and Zeolitic Imidazolate Framework-8 (ZIF-8) Core–Shell Nanostructure-Based Electrochemical Sensor for Detecting Neurotransmitters

et al. 2021

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“…In addition, Chai et al [142] described sequential ion-exchange and in-situ chemical reduction strategy synthesis of Au nanoparticles ornamented bimetallic metal-organic framework, and its sensing application towards endocrine-disrupting chemical EN. The prepared sensor material exhibits high sensing performance towords EN.…”

Section: A D V a N C E D O N L I N E A R T I C L Ementioning

confidence: 99%

Research developments in carbon materials based sensors for determination of hormones

Manjunatha

Tigari

Hareesha

et al. 2021

J. Electrochem. Sci. Eng.

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Various carbon-based sensors (graphene, carbon nanotubes, graphite, pencil graphite, glassy carbon, etc.) have distinctive behavior and a broad range of importance for identifying sex hormones like estriol, estradiol, estrone, progesterone, and testosterone. The current review emphasizes voltammetric, amperometric, and electrochemical impedance spectroscopic methods for detecting some of these hormones. The existence, structural aspects, nature, and biological importance of each hormone were analyzed in detail and their analysis with different electroanalytical methods was considered. Unique methodologies and innovations of electrochemical sensors for hormones based on carbon materials modified by different agents were examined. In this review, the interaction among various sensor materials and analytes in different supporting electrolyte media is premeditated. The most important significances of the electroanalytical methodologies were discussed based on sensor selectivity, sensitivity, stability, the limit of detection, repeatability, and reproducibility.

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“…Syntheses of some MOFs require multi-step processes to achieve high sensitivities. [36][37][38][39][40] In the case of some MOFs, lack of uniform electro active surface area and agglomeration lead to their instability. 41 To avoid these, a simple hydrothermal single step strategy would be the best option.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a bi-metallic metal organic framework nanocomposite for selective and sensitive detection of triclosan

Lokesh

Tetala

2023

Anal. Methods

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In-situ synthesis of ultrasmall Au nanoparticles on bimetallic metal-organic framework with enhanced electrochemical activity for estrone sensing

Cited by 30 publications

References 30 publications

Gold Nanorods (AuNRs) and Zeolitic Imidazolate Framework-8 (ZIF-8) Core–Shell Nanostructure-Based Electrochemical Sensor for Detecting Neurotransmitters

Gold Nanorods (AuNRs) and Zeolitic Imidazolate Framework-8 (ZIF-8) Core–Shell Nanostructure-Based Electrochemical Sensor for Detecting Neurotransmitters

Research developments in carbon materials based sensors for determination of hormones

Fabrication of a bi-metallic metal organic framework nanocomposite for selective and sensitive detection of triclosan

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