techusguИзвестия Юго-Западного государственного университета. Серия: Техника и технологииProceedings of the Southwest State University. Series: Engineering and Technology2223-1528Юго-Западный государственный университет10.21869/2223-1528-2025-15-3-54-66techusgu-362Research ArticleФИЗИКАPHYSICSДеградация молекулярных газов на пористых композиционных наноструктурах CNPs/CuODegradation of molecular gases on porous CNPs/CuO composite nanostructuresАунгНей ВинAungNay Win

Ней Вин Аунг, аспирант

кафедра нанотехнологий, микроэлектроники, общей и прикладной физики

305040; ул. 50 лет Октября, д. 94; Курск

Nay Win Aung, Postgraduate Student

Department of Nanotechnology, Microelectronics and Engineering Physics

305040; 50 let Oktyabrya Str. 94; Kursk

naywinaungnano@gmail.comhttps://orcid.org/0000-0002-5004-0823ПугачевскийМ. А.PugachevskiiM. A.

Максим Александрович Пугачевский, доктор физико-математических наук, профессор, директор центра

кафедра нанотехнологий, микроэлектроники, общей и прикладной физики; Региональный центр нанотехнологий

305040; ул. 50 лет Октября, д. 94; Курск

Maksim A. Pugachevskii, Doctor of Sciences (Physics and Mathematics), Professor, Director of the center

Department of Nanotechnology, Microelectronics and Engineering Physics; Regional center of nanotechnology

305040; 50 let Oktyabrya Str. 94; Kursk

pmaximal@mail.ruЮго-Западный государственный университетРоссияSouthwest State UniversityRussian Federation2025041220251535466Copyright © Аунг Н.В., Пугачевский М.А., 20252025Аунг Н.В., Пугачевский М.А.Aung N.W., Pugachevskii M.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://techusgu.elpub.ru/jour/article/view/362   Цель

   Цель. Исследование электрокаталитической активности пористых композиционных нанопленок CNPs/CuO, обусловливающей деградацию молекулярных газов.

   Методы исследования включали использование специально разработанной экспериментальной установки, состоящей из стеклянной камеры с замкнутым циклом продувки воздуха, нагнетателя для создания постоянного воздушного потока, а также воздушного фильтра с композиционными электрокаталитическими нанопленками. В ходе эксперимента в камеру капельным методом вносились изопропиловый спирт и бутилацетат. Пары этих веществ, испаряясь под действием воздушного потока, проходили через композитный фильтр. Эффективность деградации летучих органических соединений фиксировалась в реальном времени с помощью газового сенсора, а в отдельных сериях опытов дополнительно проводился ИК-Фурье-спектральный анализ для более подробного изучения процессов, протекающих в системе.

   Результаты исследования демонстрируют высокую эффективность электрокаталитического разложения летучих органических соединений на композиционных покрытиях CNPs/CuO. Приложенная электрическая напряженность инициирует образование электрон-дырочных пар, которые, взаимодействуя с молекулами воды и кислорода, генерируют активные формы кислорода (•OH, O2- ), обеспечивающие полную минерализацию изопропилового спирта и бутилацетата до CO2 и H2O. С помощью ИК-Фурье-спектроскопии зафиксировано отсутствие характеристических полос поглощения исходных соединений и появление сигналов продуктов реакции.

   Заключение

   Заключение. Согласно результатам ИК-Фурье-спектроскопии, прохождение высокомолекулярных газов, таких как изопропиловый спирт и бутилацетат, сквозь воздушный фильтр с композиционными пленками CNPs/CuO с приложенным электрическим напряжением (9В, 17В), приводит к их полному разложению на CO2 и H2O за счет электрокаталитических процессов, протекающих на поверхности синтезированных пленок.

   Purpose

   Purpose. Study of electrocatalytic activity of porous composite nanofilms CNPs/CuO, causing degradation of molecular gases.

   Methods

   Methods. The research methods included the use of a specially designed experimental setup consisting of a glass chamber with a closed-loop air flow system, a blower to generate a constant air flow, and an air filter with composite electrocatalytic nanofilms. During the experiment, isopropyl alcohol and butyl acetate were added dropwise to the chamber. The vapors of these substances, evaporating under the influence of the air flow, passed through the composite filter. The degradation efficiency of volatile organic compounds was recorded in real time using a gas sensor, and in certain series of experiments, Fourier transform infrared (FTIR) spectral analysis was additionally performed to study the processes occurring in the system in more detail.

   The study results demonstrate the high efficiency of the electrocatalytic decomposition of volatile organic compounds on CNPs/CuO composite coatings. Applied electrical voltage initiates the formation of electron-hole pairs, which, by interacting with water and oxygen molecules, generate reactive oxygen species (OH, O2-), ensuring the complete mineralization of isopropyl alcohol and butyl acetate to CO2 and H2O. Fourier transform IR spectroscopy revealed the absence of characteristic absorption bands of the starting compounds and the appearance of signals from the reactionproducts.

   Conclusion

   Conclusion. According to the results of FTIR spectroscopy, the passage of high-molecular gases such as isopropyl alcohol and butyl acetate through an air filter with CNPs/CuO composite films with applied electric voltage (9V, 17V) leads to their complete decomposition into CO2 and H2O due to electrocatalytic processes occurring on the surface of the synthesized films.

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