Two-dimensional MXene@ZIF-8 hybrid-derived TiO2/TiN@N-C heterostructure as an emerging material for electrochemical sensing

IF 5.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY Carbon Letters Pub Date : 2024-04-15 DOI:10.1007/s42823-024-00726-0

Yanhong Zeng, Yong Tang, Mei Liu, Can Wu

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Abstract

Herein, facile room-temperature self-assembly and high-temperature pyrolysis strategy was successively conducted for in situ synthesizing novel TiO₂/TiN@N-C heterostructure by using typical sandwich-like precursors (MXene/ZIF-8). Zero-dimensional (0D) TiO₂, TiN and N-doped carbon nanoparticles were in situ formed and randomly anchored on the two-dimensional (2D) N-doped carbon substrate surface, making TiO₂/TiN@N-C exhibit unique 0D/2D heterostructure. Relative to the extensively studied ZIF-8-derived N-doped carbon nanoparticles, TiO₂/TiN@N-C heterostructure displayed greatly boosted electrochemical active specific surface. Benefiting from the enhanced electrochemical property of TiO₂/TiN@N-C heterostructure, remarkable signal enhancement effect was achieved in terms of the oxidation of multiple hazardous substances, including clozapine, sunset yellow and benomyl. As a result, a novel electrochemical platform was constructed, the linear detection range were 10–1000 nM, 2.5–1250 nM, 10–1000 nM while the detection limits were evaluated to be 3.5 nM, 1.2 nM, 4.5 nM for clozapine, sunset yellow and benomyl, respectively. Besides, the practicability of the newly developed electrochemical method was verified by assessing the content of clozapine, sunset yellow and benomyl in real food samples.

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作为新兴电化学传感材料的二维 MXene@ZIF-8 杂化 TiO2/TiN@N-C 异质结构

本文采用典型的三明治状前驱体（MXene/ZIF-8），先后进行了简便的室温自组装和高温热解策略，原位合成了新型TiO2/TiN@N-C异质结构。零维（0D）TiO2、TiN 和掺杂 N 的碳纳米颗粒原位形成并随机锚定在二维（2D）掺杂 N 的碳基底表面，使 TiO2/TiN@N-C 呈现出独特的 0D/2D 异质结构。与广泛研究的 ZIF-8 衍生掺杂氮的碳纳米粒子相比，TiO2/TiN@N-C 异质结构大大提高了电化学活性比表面。得益于 TiO2/TiN@N-C 异质结构电化学性能的增强，在氧化多种有害物质（包括氯氮平、日落黄和苯菌灵）方面取得了显著的信号增强效果。结果表明，构建的新型电化学平台对氯氮平、日落黄和苯菌灵的线性检测范围分别为 10-1000 nM、2.5-1250 nM 和 10-1000 nM，检测限分别为 3.5 nM、1.2 nM 和 4.5 nM。此外，通过评估实际食品样品中氯氮平、日落黄和苯菌灵的含量，验证了新开发的电化学方法的实用性。

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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.