Hierarchical bimetallic nanoparticles embedded nitrogen-doped carbon derived from ZIF-67 composites for efficient electrochemical nitrite sensing

IF 5.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Carbon Letters Pub Date : 2024-09-26 DOI:10.1007/s42823-024-00807-0

Jingwen Zhao, Xiaotian Guo, Wenzhuo Sun, Jing Wang, Jizhou Jiang, Huan Pang

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引用次数: 0

Abstract

Nitrite is commonly found in various aspects of daily life, but its excessive intake poses health risks like blood oxygen transport impairment and cancer risks. Accurate detection of nitrite is crucial for preventing its potential harm and ensuring public health. In this work, Cu–Co bimetallic nanoparticles (NPs) incorporated nitrogen-doped carbon dodecahedron (Cu/Co@N–C/CNTs-X, where X denotes the carbonization temperatures) are synthesized by facile carbonization of CuO@ZIF-67 composites. Cu and Co NPs are uniformly embedded in the carbon dodecahedron decorated by carbon nanotubes (CNTs) without agglomeration. Combining the superior catalytic from Cu and Co NPs with the electrical conductivity and stability from the carbon frameworks, the Cu/Co@N–C/CNTs-600 composite as catalyst detected nitrite concentrations ranging from 1 to 5000 μM, with sensitivity values of 0.708 μA μM^–1 cm^–2, and a detection limit of 0.5 μM. Moreover, this sensor demonstrated notable selectivity, stability and reproducibility. The design of Cu/Co@N–C/CNTs-X catalysts prepared in this study can be used as an attractive alternative in the fields of food quality and environmental detection.

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ZIF-67复合材料中嵌入氮掺杂碳的分层双金属纳米颗粒用于亚硝酸盐的高效电化学传感

亚硝酸盐普遍存在于日常生活的各个方面，但其过量摄入会造成血氧运输障碍和癌症风险等健康风险。准确检测亚硝酸盐对预防其潜在危害和确保公众健康至关重要。在这项工作中，Cu - co双金属纳米颗粒（NPs）结合氮掺杂碳十二面体（Cu/Co@N -C /CNTs-X，其中X表示碳化温度）通过CuO@ZIF-67复合材料的易碳化合成。Cu和Co纳米粒子均匀嵌入碳纳米管修饰的碳十二面体中，不发生团聚。结合Cu和Co NPs的优异催化性能和碳骨架的导电性和稳定性，Cu/Co@N -C /CNTs-600复合材料作为催化剂，检测亚硝酸盐浓度范围为1 ~ 5000 μM，灵敏度值为0.708 μA μM - 1 cm-2，检出限为0.5 μM。此外，该传感器具有显著的选择性、稳定性和重复性。本研究制备的Cu/Co@N -C /CNTs-X催化剂在食品质量和环境检测领域具有广阔的应用前景。

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来源期刊

Carbon Letters CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.30

自引率

20.00%

发文量

118

期刊介绍： Carbon Letters aims to be a comprehensive journal with complete coverage of carbon materials and carbon-rich molecules. These materials range from, but are not limited to, diamond and graphite through chars, semicokes, mesophase substances, carbon fibers, carbon nanotubes, graphenes, carbon blacks, activated carbons, pyrolytic carbons, glass-like carbons, etc. Papers on the secondary production of new carbon and composite materials from the above mentioned various carbons are within the scope of the journal. Papers on organic substances, including coals, will be considered only if the research has close relation to the resulting carbon materials. Carbon Letters also seeks to keep abreast of new developments in their specialist fields and to unite in finding alternative energy solutions to current issues such as the greenhouse effect and the depletion of the ozone layer. The renewable energy basics, energy storage and conversion, solar energy, wind energy, water energy, nuclear energy, biomass energy, hydrogen production technology, and other clean energy technologies are also within the scope of the journal. Carbon Letters invites original reports of fundamental research in all branches of the theory and practice of carbon science and technology.