A5003789761- Gas Sensing Nanomaterials and Sensors
- Advanced Chemical Sensor Technologies
- Transition Metal Oxide Nanomaterials
- ZnO doping and properties
- Analytical Chemistry and Sensors
- stochastic dynamics and bifurcation
- Nonlinear Dynamics and Pattern Formation
- Advanced Thermodynamics and Statistical Mechanics
- Catalytic Processes in Materials Science
- Polymer Nanocomposite Synthesis and Irradiation
- Water Quality Monitoring and Analysis
- Radioactive element chemistry and processing
- Ecosystem dynamics and resilience
- Pigment Synthesis and Properties
- Chemical Synthesis and Characterization
- Evolution and Genetic Dynamics
- Covalent Organic Framework Applications
- Metal Extraction and Bioleaching
- Extraction and Separation Processes
- Thermography and Photoacoustic Techniques
- Synthesis and Characterization of Heterocyclic Compounds
- Advancements in Battery Materials
- Pickering emulsions and particle stabilization
- Supramolecular Chemistry and Complexes
- Muon and positron interactions and applications
Semenov Institute of Chemical Physics
2015-2024
Russian Academy of Sciences
2023
This review analyzes the studies published, mainly in last 10–15 years, on synthesis, structure, and sensor properties of semiconductor nanocomposites. Particular attention is paid to interaction between nanoparticles sensitive layer, its effect sensitivity, selectivity systems. Various mechanisms metal oxide composites are considered, including incorporation ions one component into structure another, heterocontacts different nanoparticles, core–shell systems, as well their influence...
The possibility of reducing the operating temperature H2 gas sensor based on ZnO-In2O3 down to room under green illumination is shown. It found that sensitivity composite nonmonotonically depends oxides' content. optimal ratio between components chosen. new mechanism nanocrystalline by light proposed. considers turns into nonequilibrium state and photoconductivity change in atmosphere linked with alteration charge carriers recombination rate.
Abstract The relationship between the structure and properties of nanoscale conductometric sensors based on binary mixtures metal oxides in detection reducing gases environment is considered. sensory effect such systems determined by chemisorption oxygen molecules detected gas surface oxide catalytically active particles, transfer reaction products to electron-rich nanoparticles, subsequent reactions. Particular attention paid doping nanoparticles sensitive layer. In particular,...
This paper presents a joint experimental and theoretical investigation of sensor response nanostructured In2O3 semiconductor thin films containing large concentration conduction electrons. The capture the electrons by oxygen adsorbates from air causes redistribution inside nanoparticles, resulting in reduction subsurface electron density, drop conductivity nanoparticle films. When CO H2 reduced gas analytes are introduced to system, their reaction with previously adsorbed negative atomic...
The hydrothermal synthesis of In2O3 and CeO2–In2O3 is investigated as well the properties sensor layers based on these compounds. During In2O3, intermediate products In(OH)3 InOOH are formed, which precursors stable cubic (c-In2O3) metastable rhombohedral (rh-In2O3) phases, respectively. A transition from c-In2O3 to rh-In2O3 observed with addition CeO2. introduction cerium into results in a decrease response hydrogen, while it increases composites c-In2O3. data activity correlate XPS CeO2...
The review analyzes the studies published mainly in last 10-15 years, on synthesis, structure, and sensor properties of semiconductor nanocomposites. Particular attention is paid to interaction between nanoparticles sensitive layer its effect sensitivity, selectivity systems. Various mechanisms are considered metal oxide composites including incorporation ions one component into structure another, heterocontacts different nanoparticles, core-shell systems, as well their influence...