通过水热改性 Ti2CTx 与分层组织 Co(CO3)0.5(OH)⋅0.11H2O 获得的纳米复合材料的制备及其化学传感特性

IF 1.8 3区 化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR Russian Journal of Inorganic Chemistry Pub Date : 2024-09-15 DOI:10.1134/s0036023624601715
E. P. Simonenko, A. S. Mokrushin, I. A. Nagornov, S. A. Dmitrieva, T. L. Simonenko, N. P. Simonenko, N. T. Kuznetsov
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引用次数: 0

摘要

摘要 研究了通过水热法合成 Co(CO3)0.5(OH)⋅0.11H2O 的大块分层组织形成的 Ti2CTx MXene 多层的改性过程。研究表明,在所选条件下,MXene 会被部分氧化,从而在其表面形成直径约为 3-10 纳米的二氧化钛纳米颗粒聚集体。在室温和相对湿度为 65 ± 3% 的条件下,研究了获得的复合材料对多种气态分析物(50 ppm CO、苯、丙酮、乙醇、2500 ppm H2、CH4、5% O2 和 40 ppm NH3、NO2)的传感特性。发现 40 ppm NH3 和 NO2 的检测灵敏度有所提高:响应率分别为 91% 和 63%。对检测机制的某些方面进行了讨论。研究结果表明,用半导体金属氧化物对多层 MXene 进行改性,以及分层形成块状结构,以改善其化学电阻特性,是很有前途的。
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Preparation and Chemosensory Properties of Nanocomposite Obtained by Hydrothermal Modification of Ti2CTx with Hierarchically Organized Co(CO3)0.5(OH)⋅0.11H2O

Abstract

The process of modification Ti2CTx MXene multilayer by hydrothermal synthesis of bulk hierarchically organized formations of Co(CO3)0.5(OH)⋅0.11H2O has been studied. It is shown that under the chosen conditions the MXene is partially oxidized to form aggregates of titanium dioxide nanoparticles with a diameter of ~3–10 nm on its surface. The sensing properties of the obtained composite material at room temperature and relative humidity 65 ± 3% to a wide range of gaseous analytes (50 ppm CO, benzene, acetone, ethanol, 2500 ppm H2, CH4, 5% O2, and 40 ppm NH3, NO2) have been investigated. Increased sensitivity has been found for the detection of 40 ppm NH3 and NO2: the responses have been found to be 91 and 63%, respectively. Some aspects of the detection mechanism are discussed. The results obtained show promising modification of multilayer MXene with semiconducting metal oxides and hierarchically formed bulk formations in order to improve its chemoresistive properties.

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来源期刊
Russian Journal of Inorganic Chemistry
Russian Journal of Inorganic Chemistry 化学-无机化学与核化学
CiteScore
3.10
自引率
38.10%
发文量
237
审稿时长
3 months
期刊介绍: Russian Journal of Inorganic Chemistry is a monthly periodical that covers the following topics of research: the synthesis and properties of inorganic compounds, coordination compounds, physicochemical analysis of inorganic systems, theoretical inorganic chemistry, physical methods of investigation, chemistry of solutions, inorganic materials, and nanomaterials.
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