Gold nanoparticles decorated bimetallic CuNi-based hollow nanoarchitecture for the enhancement of electrochemical sensing performance of nitrite

Lei, Peng, Zhou, Ying, Zhu, Ruiqi, Wu, Si, Jiang, Chunbo, Dong, Chuan, Liu, Yang, and Shuang, Shaomin (2020) Gold nanoparticles decorated bimetallic CuNi-based hollow nanoarchitecture for the enhancement of electrochemical sensing performance of nitrite. Microchimica Acta, 187. 572.

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Abstract

Gold nanoparticles (AuNPs) decorated bimetallic CuNi-based hollow nanoarchitecture (CNHN) are reported for the first time as a nonenzymatic sensor for the quantification of nitrite in neutral solution . The CNHN was prepared via a convenient calcining routine using the bimetallic CuNi-MOFs as a coprecursor. The unique chemical structure of hollow CNHN with high specific surface area and abundant terminal amino groups effectively avoid the aggregation of AuNPs and facilitate the subsequent adsorption of nitrite. The Au/CNHN exhibited high electrocatalytic activity towards nitrite oxidation due to the synergetic catalytic effect of AuNPs and CNHN. Chronoamperometric detection of nitrite at the Au/CNHN/GCE achieved a lower linear calibration range of 0.05 to 1.15 mM, with an LOD of 0.017 μM compared with previous reports. The proposed method obtained satisfactory recoveries for nitrite determination in practical applications, which was verified by UV-Vis spectrophotometry. The prepared sensor based on Au/CNHN featured favorable selectivity and stability, which provides a promising approach for real sample analysis.

Item ID: 64506
Item Type: Article (Research - C1)
ISSN: 1436-5073
Keywords: Hollow nanoarchitecture; Au nanoparticles; Nitrite oxidation; Synergistic catalysis; Electrochemical sensor
Copyright Information: © Springer-Verlag GmbH Austria, part of Springer Nature 2020
Funders: National Natural Science Foundation of China (NNSFC), Shanxi Province (SP), Queensland Government (QG), James Cook University (JCU)
Projects and Grants: NNSFC (No. 21874087), SP Key R&D project (201803D421031), SP Scholarship Council of China (2017 Key1), SP Hundred Talents Project, QG (WRAP052-2019RD1)
Date Deposited: 30 Sep 2020 03:40
FoR Codes: 03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030102 Electroanalytical Chemistry @ 60%
03 CHEMICAL SCIENCES > 0306 Physical Chemistry (incl Structural) > 030604 Electrochemistry @ 30%
03 CHEMICAL SCIENCES > 0301 Analytical Chemistry > 030107 Sensor Technology (Chemical aspects) @ 10%
SEO Codes: 97 EXPANDING KNOWLEDGE > 970103 Expanding Knowledge in the Chemical Sciences @ 90%
86 MANUFACTURING > 8615 Instrumentation > 861503 Scientific Instruments @ 10%
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