radioelectronicsИзвестия высших учебных заведений России. РадиоэлектроникаJournal of the Russian Universities. Radioelectronics1993-89852658-4794Saint Petersburg Electrotechnical University10.32603/1993-8985-2024-27-2-105-118radioelectronics-869Research ArticleМИКРО- И НАНОЭЛЕКТРОНИКАMICRO- AND NANOELECTRONICSГазовые сенсоры на основе наноструктур двойных и тройных оксидных системGas Sensors Based on Nanostructures of Binary and Ternary Oxide Systemshttps://orcid.org/0000-0003-3065-3961НалимоваС. С.NalimovaS. S.

Налимова Светлана Сергеевна – кандидат физико-математических наук (2013), доцент кафедры микро- и наноэлектроники

ул. Профессора Попова, д. 5 Ф, Санкт-Петербург, 197022

Svetlana S. Nalimova, Cand. Sci. (Phys.-Math.) (2013), Associate Professor of the Department of Micro- andNanoelectronics

5 F, Professor Popov St., St Petersburg 197022

sskarpova@list.ruhttps://orcid.org/0000-0001-6500-5492МошниковВ. А.MoshnikovV. A.

Мошников Вячеслав Алексеевич – доктор физико-математических наук (1997), профессор кафедры микро- и наноэлектроники

ул. Профессора Попова, д. 5 Ф, Санкт-Петербург, 197022

Vyacheslav A. Moshnikov, Dr Sci. (Phys.-Math.) (1997), Professor of the Department of Micro- and Nanoelectronics

5 F, Professor Popov St., St Petersburg 197022

vamoshnikov@mail.ruhttps://orcid.org/0000-0001-5738-2626ШомаховЗ. В.ShomakhovZ. V.

Шомахов Замир Валериевич – кандидат физико-математических наук (2012), доцент

ул. Чернышевского, д. 173, Нальчик, 360004

Zamir V. Shomakhov, Cand. Sci. (Phys.-Math.) (2012), Associate Professor

173, Chernyshevsky St., Nalchik 360004

shozamir@yandex.ruhttps://orcid.org/0000-0002-3469-5897КондратьевВ. М.KondratevV. M.

Кондратьев Валерий Михайлович – магистр по направлению "Электроника и наноэлектроника" (2020,СПбГЭТУ "ЛЭТИ"), аспирант 4-го года обучения, инженер лаборатории Оптики гетерогенных структур иоптических материалов

ул. Хлопина, д. 8, к. 3, лит. А, Санкт-Петербург, 194021

Valeriy M. Kondratev, Master in Electronics and Nanoelectronics (2020, Saint Petersburg ElectrotechnicalUniversity), Postgraduate Student, Engineer of the Laboratory of Optics of Heterogeneous Structures and Optical Materials of Alferov University, Junior Researcher

8, Khlopina St., St Petersburg 194021

kondratev-as@spbau.ruСанкт-Петербургский государственный электротехнический университет "ЛЭТИ" им. В. И. Ульянова (Ленина)РоссияSaint Petersburg Electrotechnical UniversityRussian FederationКабардино-Балкарский государственный университет им. Х. М. БербековаРоссияKabardino-Balkarian State UniversityRussian FederationМосковский физико-технический институт (национальный исследовательский университет); Санкт-Петербургский национальный исследовательский Академический университет им. Ж. И. Алферова Российской академии наукРоссияMoscow Institute of Physics and Technology; Alferov UniversityRussian Federation202402052024272105118Copyright © Налимова С.С., Мошников В.А., Шомахов З.В., Кондратьев В.М., 20242024Налимова С.С., Мошников В.А., Шомахов З.В., Кондратьев В.М.Nalimova S.S., Moshnikov V.A., Shomakhov Z.V., Kondratev V.M.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://re.eltech.ru/jour/article/view/869Введение

Введение. Наноматериалы на основе бинарных и многокомпонентных оксидных систем представляют интерес для разработки катализаторов, фотокатализаторов, газовых сенсоров, солнечных элементов, а также во многих других областях. Для получения оксидных систем различного состава наиболее эффективными методами являются методы химического соосаждения, а также двухстадийные подходы.

Цель работы

Цель работы. Разработка сенсорных наноматериалов на основе ZnO, тройных оксидных наносистем Zn–Fe–O и Zn–Sn–O, а также разработка методов диагностики особенностей свойств этих материалов.

Материалы и методы

Материалы и методы. В данной статье методом химического соосаждения синтезированы нанопорошки ZnO и ZnFe2O4, а также получены наноструктуры ZnFe2O4 и Zn2SnO4 модифицированием наностержней ZnO. Химический состав и микроструктура поверхности исследованы с помощью растровой электронной микроскопии, дифракции обратнорассеянных электронов, рентгеновской фотоэлектронной спектроскопии. Проанализирован отклик образцов к парам органических растворителей.

Результаты

Результаты. Обнаружено, что величина отклика образцов оксида цинка и цинкового феррита, полученных методом химического соосаждения, на 2–4 порядка больше, чем модифицированных наностержней оксида цинка. Формирование тройных оксидных наноструктур приводит к увеличению сенсорного отклика нано-стержней оксида цинка. Этот эффект объяснен образованием адсорбционных центров различного типа при формировании таких систем. Образцы, полученные химическим соосаждением, показали чрезвычайно высокий сенсорный отклик. Это может быть связано с формированием фрактальных структур со свойствами перколяционного кластера на границе порога протекания.

Заключение

Заключение. Химическим соосаждением получены оксидные наноструктуры ZnO и ZnFe2O4, проявляющие очень высокий сенсорный отклик к парам ацетона и этанола. Разработаны способы формирования многокомпонентных оксидных систем, обладающих улучшенными сенсорными свойствами по сравнению с исходными наностержнями оксида цинка. Полученные сенсорные наноматериалы перспективны для использования в качестве чувствительных слоев газовых сенсоров для обнаружения паров органических растворителей.

Introduction

Introduction. Nanomaterials based on binary and multicomponent oxides are of interest for the development of catalysts, photocatalysts, gas sensors, solar cells, as well as in other fields. The most effective methods to produce oxide systems of various compositions are those of chemical co-deposition, as well as two-stage approaches.

Aim

Aim. To develop sensor nanomaterials based on ZnO, Zn–Fe–O, and Zn–Sn–O ternary oxide nanosystems, as well as to develop methods for assessing their properties.

Materials and methods

Materials and methods. ZnO and ZnFe2O4 nanopowders were synthesized by chemical coprecipitation, and ZnFe2O4 and Zn2SnO4 nanostructures were produced by modifying ZnO nanowires. The surface chemical composition and microstructure were studied using scanning electron microscopy, backscattered electron diffraction, and Xray photoelectron spectroscopy. The sensor responses of the samples to vapors of organic solvents were analyzed.

Results

Results. The response value of zinc oxide and zinc ferrite samples synthesized by chemical coprecipitation was found to be 2–4 orders of magnitude higher than that of modified zinc oxide nanowires. The formation of ternary oxide nanostructures led to an increase in the sensor response of zinc oxide nanowires. This effect can be explained by the formation of adsorption sites of various types during formation of such systems. The samples produced by chemical coprecipitation showed an extremely high sensor response. This may be due to the formation of fractal structures at the percolation threshold.

Conclusion

Conclusion. ZnO and ZnFe2O4 oxide nanostructures produced by chemical coprecipitation exhibit a high sensor response to acetone and ethanol vapors. Methods for the formation of multicomponent oxide systems with improved sensor properties compared to the original zinc oxide nanowires were developed. The resultant sensor nanomaterials are promising for use as sensitive layers of gas sensors for detecting organic solvent vapors.

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The authors declare that there are no conflicts of interest present.