Study of the Structure, Conductivity and Sensory Properties of Metal Oxide Composites Based on In2O3

Topic: «Investigation of the Structure, Electrical Conductivity, and Sensory Characteristics of Metal Oxide Composite Materials Based on In2O3». The final qualifying paper is composed of an introduction, two main chapters, conclusions, and a reference list. The introduction explains the relevance of the chosen topic, sets the purpose and objectives of the study, and provides a brief overview of the main points that will be discussed in the paper. In the first chapter, a wide range of literature is reviewed and analyzed, including articles related to the topic of the study. This chapter aims to provide a comprehensive understanding of the current state of research in the field and to identify gaps in existing knowledge that the study will address. The second chapter focuses on the experimental methods and techniques used to produce and analyze sensory materials. This includes two synthesis methods for creating metal oxide composite nanomaterials and methods for studying their structure and properties. The chapter also discusses methods for forming sensor layers on special chips and for measuring conductivity and sensing characteristics when detecting different concentrations of gases such as hydrogen and carbon monoxide. It has been demonstrated that the synthesis methods used in this study are effective in producing metal oxide composite nanomaterials with promising sensing properties, which could be used as sensing layers in conductometric sensors for detecting gases in air. The highest sensitivity to hydrogen was achieved using a 3% NiO-97% In2O3 composite that was synthesized through hydrothermal treatment. These composites also exhibit rapid response to hydrogen with response times ranging from 0.1 to 0.4 seconds. In summary, the main findings of this study are presented in this paper. The paper is 77 pages long and includes 19 figures and 4 tables.