VOC Detection with Zinc Oxide Gas Sensors: A Review of Fabrication, Performance, and Emerging Applications DOI Creative Commons
Mir Waqas Alam, Añil Sharma, Anjana E. Sharma

et al.

Electroanalysis, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Energy‐efficient, high‐specificity gas sensors provide practical suitability for stability and response factors. The recognition of ignitable gases (methane (CH 4 ), propane (C 3 H 8 hydrogen (H 2 ) harmful (carbon oxide (CO) sulfide S)) in an enclosed out‐of‐door space are essential to safeguard the human lives infrastructural spaces. One crucial conductive‐type metal semiconductor (MOS) yielding wide applications is zinc (ZnO). This study highlights various types ZnO sensors, their fabrication techniques, specific vital characterizations. devices based on MOS utilized sense target through redox reactions. variation surface with interactions transduced a change sensor conductance. review also provides insight into integrating technologies such as materials engineering, Internet things big data. Moreover, this addresses sensors’ challenges future directions.

Language: Английский

A NO2 Sensitive MnO2/Graphene Oxide Composite Based Gas Sensor DOI Creative Commons
Mohamed Ayoub Alouani, Juan Casanova‐Cháfer, Santiago de Bernardi-Martín

et al.

Chemosensors, Journal Year: 2025, Volume and Issue: 13(3), P. 96 - 96

Published: March 8, 2025

Nanosized manganese dioxide (MnO2) material has been successfully incorporated into a graphene oxide (GO) sensitive layer. Since this type of heterojunction never reported in the literature related to gas sensing, these sensors were prepared, tested, and reported. The morphological properties composition MnO2@GO have thoroughly studied via FESEM, XRD, Raman spectroscopy, HR-TEM, ATR-IR. Gas sensitivity selectivity towards mainly NO2 other gases (NH3, CO, ethanol, benzene, H2) also studied. obtained exposed different concentrations ranging from 200 ppb 1000 at 150 °C under close real conditions (25% relative humidity 70% humidity). shown high response 16.3% 1 ppm dry higher 44% RH same concentration. Finally, it strong for NO2.

Language: Английский

Citations

0
Green Valorization of Waste Plastics to Graphene as an Upcycled Eco-Friendly Material for Advanced Gas Sensing DOI Creative Commons

Prince Oppong Amoh,

Marwa Elkady, Mahmoud Nasr

et al.

Recycling, Journal Year: 2024, Volume and Issue: 9(3), P. 38 - 38

Published: May 13, 2024

The valorization technique successfully transformed waste polyethylene terephthalate (PET) into valuable carbon nanomaterial (CN)/graphene, while doped and undoped ZnO nanopowders were synthesized via sol–gel methods. Utilizing XRD, BET, TEM, EDX, FTIR, TGA analyses, the synthesis of sp2 2D sheet, pristine, nanostructures was confirmed. Solid-state gas sensor devices, tested under 51% relative humidity (RH), 30 °C ambient temperature, 0.2 flow rate, exhibited a 3.4% enhanced response to H2 compared CO2 at 50 ppm concentrations over time. Notably, ZnO/CN surpassed CN alone, attributed dopant integration with decreasing order performance as > ZnO. This study underscores efficacy techniques in generating high-value nanomaterials their bolstering performance, demonstrating superior capabilities.

Language: Английский

Citations

2
VOC Detection with Zinc Oxide Gas Sensors: A Review of Fabrication, Performance, and Emerging Applications DOI Creative Commons
Mir Waqas Alam, Añil Sharma, Anjana E. Sharma

et al.

Electroanalysis, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 6, 2024

Abstract Energy‐efficient, high‐specificity gas sensors provide practical suitability for stability and response factors. The recognition of ignitable gases (methane (CH 4 ), propane (C 3 H 8 hydrogen (H 2 ) harmful (carbon oxide (CO) sulfide S)) in an enclosed out‐of‐door space are essential to safeguard the human lives infrastructural spaces. One crucial conductive‐type metal semiconductor (MOS) yielding wide applications is zinc (ZnO). This study highlights various types ZnO sensors, their fabrication techniques, specific vital characterizations. devices based on MOS utilized sense target through redox reactions. variation surface with interactions transduced a change sensor conductance. review also provides insight into integrating technologies such as materials engineering, Internet things big data. Moreover, this addresses sensors’ challenges future directions.

Language: Английский

Citations

1