Recent Advances in Functionalizing Metal Oxide Semiconductors for Highly Sensitive Gas Sensors DOI
Ziling Zhang,

Pengpeng Qiu,

Yonghui Deng

et al.

Small Methods, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Abstract Metal oxide semiconductors (MOSs) have emerged as pivotal materials for gas sensing technologies due to their inherent advantages, including cost‐effectiveness, simplicity in synthesis, and easy fabrication of nanodevices. These characteristics made MOSs widely applicable industrial, environmental, biological monitoring. While offer intrinsic gas‐sensing properties, limited active site density function diversity restrict sensitivity selectivity, especially complex gaseous environments. To overcome these limitations, extensive research efforts been devoted functionalizing through strategies such heterojunction construction, noble metal nanoparticle loading (e.g., Au, Pt, Ag, Pd), heteroatom doping Si, Cr). Furthermore, composite an effective approach enhance MOSs‐based sensors by integrating carbon‐based or polymers leverage synergistic interactions. modifications expand the applicability detecting volatile organic compounds, toxic gases, flammable gases. This review systematically examines synthesis performance enhancements achieved functionalization material integration, emphasizing structure‐property relationships, interfacial charge transfer dynamics, adsorption mechanisms. Finally, challenges future directions rational design next‐generation are outlined, providing critical insights advancing intelligent technologies.

Language: Английский

Wireless Gas Sensor Based on the Mesoporous ZnO–SnO2 Heterostructure Enables Ultrasensitive and Rapid Detection of 3-Methylbutyraldehyde DOI
Zizheng Wang, Ping Li,

Bingxi Feng

et al.

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(5), P. 2585 - 2595

Published: April 20, 2024

Achieving ultrasensitive and rapid detection of 3-methylbutyraldehyde is crucial for monitoring chemical intermediate leakage in pharmaceutical industries as well diagnosing ventilator-associated pneumonia by exhaled gas. However, developing a sensitive method detecting poses challenges. Herein, wireless chemiresistive gas sensor based on mesoporous ZnO–SnO2 heterostructure fabricated to enable the first time. The exhibits uniform spherical shape (∼79 nm diameter), high specific surface area (54.8 m2 g–1), small crystal size (∼4 nm), large pore (6.7 nm). demonstrates response (18.98@20 ppm), short response/recovery times (13/13 s), low limit (0.48 ppm) toward 3-methylbutyraldehyde. Furthermore, real-time system developed utilizing microelectromechanical systems sensors. modification amorphous ZnO SnO2 wall can effectively increase chemisorbed oxygen content thickness electron depletion layer at gas–solid interface, which facilitates interface redox reaction enhances sensing performance. This work presents an initial example semiconductor metal oxide sensors efficient that holds great potential ensuring safety during production disease diagnosis.

Language: Английский

Citations

21
Advances in metal oxide semiconductor gas sensor arrays based on machine learning algorithms DOI
Jiangchao Han, Huizi Li, Jiangong Cheng

et al.

Journal of Materials Chemistry C, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

In this article, we summarize the progress of materials, mechanisms and ML-assisted gas sensing data processing for MOS sensor arrays, with a view to providing breakthrough direction future research.

Language: Английский

Citations

2
Electrochemical epoxidation enhanced by C2H4 activation and hydroxyl generation at the Ag/SnO2 interface DOI Creative Commons
Hao Dong,

Ran Luo,

Gong Zhang

et al.

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Feb. 23, 2025

Language: Английский

Citations

2
Synthesis of Mesoporous Lanthanum-Doped SnO2 Spheres for Sensitive and Selective Detection of the Glutaraldehyde Disinfectant DOI
Ping Li,

Bingxi Feng,

Youyou Feng

et al.

ACS Sensors, Journal Year: 2023, Volume and Issue: 8(10), P. 3723 - 3732

Published: Aug. 23, 2023

Glutaraldehyde disinfectant has been widely applied in aquaculture, farming, and medical treatment. Excessive concentrations of glutaraldehyde the environment can lead to serious health hazards. Therefore, it is extremely important develop high-performance sensors with low cost, high sensitivity, rapid response, fabulous selectivity, limit detection. Herein, mesoporous lanthanum (La) doped SnO2 spheres specific surface area (52-59 m2 g-1), uniform mesopores (with a pore size concentrated at 5.7 nm), highly crystalline frameworks are designed fabricate sensitive gas toward gaseous glutaraldehyde. The lanthanum-doped exhibit excellent glutaraldehyde-sensing performance, including response (13.5@10 ppm), time (28 s), detection 0.16 ppm. sensing performance ascribed area, contents chemisorbed oxygen species, doping. DFT calculations suggest that doping lattice effectively improve adsorption energy compared pure materials. Moreover, fabricated detect commercial disinfectants, indicating potential application

Language: Английский

Citations

34
Nanostructured metal oxide heterojunctions for chemiresistive gas sensors DOI
Shuai Ma, Jinyong Xu

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(44), P. 23742 - 23771

Published: Jan. 1, 2023

Metal oxides have been extensively used in environmental monitoring, breath analysis, and food quality assessment. This review summarizes the effects of nanoscale heterojunctions on enhancing gas-sensing performance metal oxide devices.

Language: Английский

Citations

31
Highly Selective and ppb-Level Butanone Sensors Based on SnO2/NiO Heterojunction-Modified ZnO Nanosheets with Electron Polarity Transport Properties DOI
Hongmin Zhu, Zhenyu Yuan, Yanbai Shen

et al.

ACS Sensors, Journal Year: 2023, Volume and Issue: 8(7), P. 2635 - 2645

Published: June 23, 2023

Gas sensors require the construction of composites with high reactivity to reduce detection limit, but this can lead a broad-spectrum response between adsorbed oxygen and target gas, making it difficult improve selectivity. In study, phenomenon electron polar transport properties two-dimensional heterojunction material is first discovered in gas sensing utilized greatly selectivity butanone sensors. Ultra-thin porous ZnO nanosheets modified SnO2/NiO heterogeneous particles are synthesized achieve 20 ppb limits for 328 100 ppm butanone, which lowest known limit. The combination reaction kinetics liquid chromatography–mass spectrometry reveals good synergistic catalytic effect particles, may contribute low limit butanone. Finally, possible mechanism generation analyzed material. This work provides novel perspective achieving both sensors, universal applicability application potential.

Language: Английский

Citations

24
Spinel type MCo2O4 (M = Mn, Mg, Ni, Cu, Fe and Zn) for chemoresistance gas sensors DOI
Zichen Zheng, Kewei Liu,

Yiwen Zhou

et al.

Materials Today Chemistry, Journal Year: 2024, Volume and Issue: 36, P. 101928 - 101928

Published: Jan. 24, 2024

Language: Английский

Citations

10
Carbon monoxide gas sensing properties of SnO2 modified metal-organic skeleton derived NiO DOI

Renjie Xie,

Jianbin Lu,

Youqiang Liu

et al.

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 367, P. 115038 - 115038

Published: Jan. 21, 2024

Language: Английский

Citations

9
Single-Atom Au-Functionalized Mesoporous SnO2 Nanospheres for Ultrasensitive Detection of Listeria monocytogenes Biomarker at Low Temperatures DOI

Bingxi Feng,

Zizheng Wang,

Youyou Feng

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(34), P. 22888 - 22900

Published: Aug. 16, 2024

Semiconductor metal oxide gas sensors have been proven to be capable of detecting

Language: Английский

Citations

9
Universal Gas-Sensitive Detection of Various Lithium-Ion Battery Electrolyte Leakages via Ag@Ag2O-Functionalized SnO2 Nanoflowers with Abundant Oxygen Vacancies DOI

Xi-Qian Sun,

Yunfeng Li,

Li Chen

et al.

Analytical Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 6, 2025

Lithium-ion batteries (LIBs) provide many benefits, but trace electrolyte leakage can cause serious safety risks such as thermal runaway. Although gas sensors offer a potential solution, the complexity of solvents in LIBs makes it challenging to develop sensing materials capable universally detecting multiple solvent molecules. Here, Ag@Ag2O-functionalized SnO2 nanoflowers were synthesized using self-template pyrolysis strategy for sensitive detection both common molecules and widely used electrolytes. These sensors, enhanced by abundant oxygen vacancies introduced Ag@Ag2O functionalization, exhibit excellent sensitivity, particularly dimethyl carbonate, with response 106-100 ppm, low limit 11.76 ppb, rapid response/recovery times (28/55 s) at an operating temperature 200 °C. The sensor performance was validated density functional theory calculations, which corroborated effectiveness material. In simulated LIB scenarios, puncture injection, demonstrated quick responses various compositions, indicating their practical applications. This study highlights effective method fabricating composite emphasizes significance our universal approach monitoring energy storage devices.

Language: Английский

Citations

1