Ultrathin two-dimensional materials: New opportunities and challenges in ultra-sensitive gas sensing

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 505, P. 215691 - 215691

Published: Jan. 31, 2024

Language: Английский

---

CxNy-based materials as gas sensors: Structure, performance, mechanism and perspective

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 503, P. 215653 - 215653

Published: Jan. 9, 2024

Carbon nitride (CxNy) materials, characterized by an ordered two-dimensional without metal ions structure high N:C ratio, phase transition transformation, predispose them for promising applications in catalytic reaction, flexible electronics, broadband photodetectors and battery. However, up to now, its potential advantages gas sensor have yet be fully explored. This review provides a comprehensive overview of recent advances CxNy-based materials applied as substrates covering structure, properties, synthesis methods, enhancement strategies. A rigorous assessment their sensing capabilities, including sensitivity, selectivity, stability was critically summarized. Additionally, the molecule-level mechanistic aspects underlying gas-sensing working principles insights into functional properties were discussed. Furthermore, thorough investigations utilizing density theory (DFT) studies, aimed illuminating fundamental governing behavior presented detail. Finally, futuristic along with challenges CxNy deliberated herein.

Language: Английский

---

Perovskite-Structured BiFeO₃ Nanoparticles with Abundant Oxygen Vacancies for Selective n-Butanol Gas Sensing

ACS Applied Nano Materials, Journal Year: 2023, Volume and Issue: 6(24), P. 23370 - 23380

Published: Dec. 14, 2023

N-butanol, a standard volatile organic compound (VOC) gas with toxicity and flammability, seriously endangers human life health. It is imperative to achieve rapid trace detection of n-butanol. Oxygen vacancies have been proven be an essential factor for VOC adsorption at the surface metal oxide semiconductor (MOS) sensors. In view above, BiFeO3 (BFO) nanoparticles abundant oxygen were prepared via simple sol–gel annealing. Crystal structure, morphology, compositions systematically analyzed by series characterizations (XRD, SEM, HRTEM, EPR, XPS). The response synthesized BFO-2 sensor reached 19.37 100 ppm n-butanol limit 0.28 optimal operating temperature 280 °C. addition, also has fast time, good stability repeatability, favorable selectivity crucial explore excellent BFO sensors due their large intrinsic crystal defects. Herein, adjusting calcination one constructive strategy tune vacancy, which would prompt sensing performance

Language: Английский

---

Spinel nanomaterials and their composites as extractors and sensors for heavy metals and other pollutants

TrAC Trends in Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 118159 - 118159

Published: Jan. 1, 2025

Language: Английский

---

NH3 Gas Sensing with Pure and Y-Doped ZnO Nanoflowers Synthesized by the Hydrothermal Method

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 1, 2025

Language: Английский

---

Nickel Oxide Nanostructures for Gas Sensing: Recent Advances, Challenges, and Future Perspectives

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: March 10, 2025

The need for efficient and reliable gas sensors has grown significantly due to increasing industrial activities, transportation, environmental pollution, posing serious risks human health the environment. Advanced sensor technologies are crucial detecting these harmful gases at low concentrations with a high accuracy. Nickel oxide, p-type metal oxide semiconductor, emerged as promising candidate sensing applications owing its unique excellent structural, electronic, catalytic properties along chemical stability. Interestingly, possibility synthesize NiO in versatile nanostructure forms: nanowires, nanoflowers, nanospheres, helps enhance surface area porosity, which critical factors improve adsorption diffusion. This review presents comprehensive assessment of latest advancements synthesis, characterization, gas-sensing performance nanostructures. We explore how structural modifications, such decoration noble nanoparticles, formation different composites, functionalization self-assembly sensitivity, selectivity, operational temperature sensors. Particular focus is given integration novel nanoheterostructures, where p-n p-p junctions improves charge transport overall response. Finally, we identify current challenges reproducibility, stability, operating conditions, while offering directions future research on tailoring nanostructures more effective, scalable, robust technologies.

Language: Английский

---

Unveiling the potential of PANI@MnO2@rGO ternary nanocomposite in energy storage and gas sensing

Chemosphere, Journal Year: 2023, Volume and Issue: 349, P. 140657 - 140657

Published: Nov. 22, 2023

Language: Английский

---

Recent advancements in the specific determination of carcinoembryonic antigens using MOF-based immunosensors

RSC Advances, Journal Year: 2024, Volume and Issue: 14(14), P. 9571 - 9586

Published: Jan. 1, 2024

Carcinoembryonic antigens (CEAs) are prominent cancer biomarkers that enable the early detection of numerous cancers.

Language: Английский

---

Bifunctional CuO nanostructured materials preparation for ethanol gas and riboflavin sensing applications

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 415, P. 135979 - 135979

Published: May 16, 2024

Language: Английский

---

Heterostructures constructed by NiMoO4 functionalized 2D MoO3 nanosheets for ultrasensitive trimethylamine detection with ppb level detection

Sensors and Actuators B Chemical, Journal Year: 2024, Volume and Issue: 421, P. 136442 - 136442

Published: Aug. 14, 2024

Language: Английский

---