Facile synthesis of flower-like CePO<sub>4</sub> with a hierarchical structure for the simultaneous electrochemical detection of dopamine, uric acid and acetaminophen

Zhu, Kenny Q.; Cai, Xin-Qin; Luo, Yu‐Hui; Liu, Botao; Zhang, Qingyu; Hu, Tong-Tong; Liu, Zun-Zheng; Wang, Haiying; Zhang, Dongen

doi:10.1039/d1nj04308k

Cited by 7 publications

(2 citation statements)

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“…Changes in pH directly affect the degree of ionization or hydrolysis of H 2 PO 4 − and HPO 4 2− . In order to obtain high sensitivity and an electrical signal, PBS buffer with pH 5.0 was finally selected as an electrolyte [ 47 , 48 ].…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

et al. 2023

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Acetaminophen (AC) is one of the most popular pharmacologically active substances used as an analgesic and antipyretic drug. Herein, a new type of hollow Fe3O4-rGO/GCE electrode was prepared for electrochemical detection of AC through a three-step approach involving a solvothermal method for the synthesis of hollow Fe3O4 and the chemical reduction of graphene oxide (GO) for reduced graphene oxide (rGO) and Fe3O4-rGO nanocomposites modified on the glassy carbon electrode (GCE) surface. The as-prepared Fe3O4-rGO nanocomposites were characterized using a transmission electron microscope (TEM), X-ray diffraction (XRD), and a magnetic measurement system (SQUID-VSM). The magnetic Fe3O4-rGO/GCE electrodes were employed for the electrochemical detection of AC using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), and square wave voltammetry (SWV) and exhibited an ultra-high selectivity and accuracy, a low detection limit of 0.11 µmol/L with a wider linear range from 5 × 10−7 to 10−4 mol/L, and high recovery between 100.52% and 101.43%. The obtained Fe3O4-rGO-modified GCE displays great practical significance for the detection of AC in drug analysis.

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Section: Resultsmentioning

confidence: 99%

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

et al. 2023

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“…Hydrazine hydrate not only reduced GO, but also participated in the formation of CePO 4 . 20 The uniform combination of CePO 4 and rGO makes CePO 4 -rGO composites promising candidates for electrochemical sensing of DA and APAP. As far as we know, this is the first time that CePO 4 -rGO composites have been used for electrochemical detection.…”

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confidence: 99%

Facial Construction of CePO₄-Reduced Graphene Oxide Composite for Enhanced Electrochemical Detection of Dopamine and Acetaminophen

Zhu¹,

Chao²,

Liu³

et al. 2022

J. Electrochem. Soc.

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A serial of cerium phosphate/reduced graphene oxide (CePO4-rGO) composites were synthesized for the first time by one-pot hydrothermal method. Structural analyses revealed that flaky CePO4 and few-layer rGO were composited homogeneously. It is found that rGO can greatly enhance the conductivity and the adsorption capacity of the composite. With these advantages, the constructed composites were used for electrochemical detection of dopamine (DA) and acetaminophen (APAP). Further studies show that the loading amount of rGO was also very important. When CePO4-0.6rGO was used, wide linear ranges of 1.2 - 50 µM for DA and 0.5 - 30 µM for APAP can be obtained, respectively. The detection limits of DA and APAP were 0.013 µM and 0.025 µM with high sensitivities of 25.58 μA μM-1 cm-2 and 13.30 μA μM-1 cm-2, respectively. Moreover, the modified electrode also has high selectivity, good stability and satisfactory reproducibility. In addition, the modified electrode was also successfully applied to detect DA and APAP in real urine samples. This work provides a simple method for preparing new electrode materials for detecting small biomolecules.

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Electrochemical Nano‐Roughening of Gold Microstructured Electrodes for Enhanced Sensing in Biofluids**

et al. 2023

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A key challenge for sensor miniaturization is to create electrodes with smaller footprints, while maintaining or increasing sensitivity. In this work, the electroactive surface of gold electrodes was enhanced 30‐fold by wrinkling followed by chronoamperometric (CA) pulsing. Electron microscopy showed increased surface roughness in response to an increased number of CA pulses. The nanoroughened electrodes also showed excellent fouling resistance when submerged in solutions containing bovine serum albumin. The nanoroughened electrodes were used for electrochemical detection of Cu2+ in tap water and of glucose in human blood plasma. In the latter case, the nanoroughened electrodes allowed highly sensitive enzyme‐free sensing of glucose, with responses comparable to those of two commercial enzyme‐based sensors. We anticipate that this methodology to fabricate nanostructured electrodes can accelerate the development of simple, cost‐effective, and high sensitivity electrochemical platforms.

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Facile synthesis of flower-like CePO₄ with a hierarchical structure for the simultaneous electrochemical detection of dopamine, uric acid and acetaminophen

Abstract: A flower-like CePO4 (F-CePO4) with hierarchical structure was hydrothermally prepared. The comparative experiments show that the amount of hydrazine hydrate and urea as well as the reaction time significantly affect...

Cited by 7 publications

References 42 publications

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

Facial Construction of CePO₄-Reduced Graphene Oxide Composite for Enhanced Electrochemical Detection of Dopamine and Acetaminophen

Electrochemical Nano‐Roughening of Gold Microstructured Electrodes for Enhanced Sensing in Biofluids**

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Facile synthesis of flower-like CePO4 with a hierarchical structure for the simultaneous electrochemical detection of dopamine, uric acid and acetaminophen

Abstract: A flower-like CePO4 (F-CePO4) with hierarchical structure was hydrothermally prepared. The comparative experiments show that the amount of hydrazine hydrate and urea as well as the reaction time significantly affect...

Cited by 7 publications

References 42 publications

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

Facile Synthesis of Hollow Fe3O4-rGO Nanocomposites for the Electrochemical Detection of Acetaminophen

Facial Construction of CePO4-Reduced Graphene Oxide Composite for Enhanced Electrochemical Detection of Dopamine and Acetaminophen

Electrochemical Nano‐Roughening of Gold Microstructured Electrodes for Enhanced Sensing in Biofluids**

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Product

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Facile synthesis of flower-like CePO₄ with a hierarchical structure for the simultaneous electrochemical detection of dopamine, uric acid and acetaminophen

Facial Construction of CePO₄-Reduced Graphene Oxide Composite for Enhanced Electrochemical Detection of Dopamine and Acetaminophen