Carbon and cobalt co-doped ZnO thin films for highly sensitive and selective ammonia detection at room temperature DOI Creative Commons
Anju Thomas, S. Kalainathan

Materials Advances, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Co and C co-doped ZnO thin films deposited via spray pyrolysis are highly selective to ammonia with a sensor response of 2729 50 ppm ammonia.

Language: Английский

Impact of annealing temperature on the response and sensitivity of spinel ZnFe2O4 thin film to ammonia gas sensing at room temperature DOI

Thangavel Ravikumar,

Logu Thirumalaisamy,

Anju Thomas

et al.

Materials Today Chemistry, Journal Year: 2025, Volume and Issue: 43, P. 102515 - 102515

Published: Jan. 1, 2025

Language: Английский

Citations

2
Investigation on the impact of film thickness on spray-deposited Co2SnO4 thin films gas sensing performance towards dimethylamine detection at room temperature DOI

Santhosh Nallakumar,

M. Usha Rani

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 51, P. 104666 - 104666

Published: June 24, 2024

Language: Английский

Citations

6
Ultrafast Detection of ppb-Level NH3 Gas at Room Temperature Using CuO Nanoparticles Decorated AlN-Based Surface Acoustic Wave Sensor DOI
Na-Hyun Bak, Kedhareswara Sairam Pasupuleti,

Reddeppa Maddaka

et al.

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

Published: Jan. 22, 2025

Rational design of heterostructure (HS)-based surface acoustic wave (SAW) smart gas sensors for efficient and accurate subppm level ammonia (NH3) detection at room temperature (RT) is great significance in environmental protection human safety. This study introduced a novel HS composed an AlN-based SAW resonator CuO nanoparticles (NPs) as chemical interface NH3 RT (∼26 °C). The structural, morphological, compositions were detailly investigated, which demonstrates that the CuO/AlN was successfully formed via interfacial modulation. sensor exhibited significant positive frequency shift 52.60 kHz response to 100 ppm NH3, 4.8 times higher than as-grown AlN sensor. Additionally, ultrafast response/recovery 5/25 s, remarkably low limit (LOD) 24 ppb, excellent long-term stability selectivity. These results are attributed high porosity defect sites NPs, enhanced charge transfer heterointerface, well decreased mass loading conductivity effects. also demonstrated distinct responses under varying relative humidity (RH): RH (5%–10%) due increased conductivity, negative (20%–80%) loading. sensing characteristics validated through X-ray photoelectron spectroscopy band diagram analysis resistive-type measurements. findings highlight potential integrating metal oxide with nitride semiconductors advanced SAW-based technology industrial applications.

Language: Английский

Citations

0
Revealing the Significance of Ga-doped WO3 Thin Film Gas Sensor prepared by spray pyrolysis technique for Detecting Acetaldehyde DOI

Roshini Xavier,

G. Swati

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105974 - 105974

Published: Feb. 1, 2025

Language: Английский

Citations

0
Light-activated semiconductor gas sensors: pathways to improve sensitivity and reduce energy consumption DOI Creative Commons
Abulkosim Nasriddinov, Rustem Zairov, M. N. Rumyantseva

et al.

Frontiers in Chemistry, Journal Year: 2025, Volume and Issue: 13

Published: Feb. 25, 2025

Resistive type gas sensors based on wide-bandgap semiconductor oxides are remaining one of the principal players in environmental air monitoring. The rapid development technology and desire to miniaturize electronics require creation devices with minimal energy consumption. A promising solution may be use photoactivation, which can initiate/accelerate physico-chemical processes at solid-gas interface realize detection flammable explosive gases close room temperature. This work examines mechanism underlying increased sensitivity various under photoactivation. review is intended clarify current situation field light-activated set vector for their further order integrate latest technological projects.

Language: Английский

Citations

0
Excellent-performing gas sensor based on Yttrium-doped ZnFe2O4 nanofibers for detection of n-Butanol DOI

Qingsong Luo,

Yu Wan, Zhenxing Wang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180605 - 180605

Published: April 1, 2025

Language: Английский

Citations

0
Synergistic Effect of rGO Decoration on ZnFe2O4 Nanorods for Low Concentration Detection of Ammonia at Room Temperature with High Selectivity and Response DOI

Thangavel Ravikumar,

T. Logu, S. Kalainathan

et al.

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 53, P. 105076 - 105076

Published: Sept. 6, 2024

Language: Английский

Citations

1
Functionalization of ZnO Nanorods with Au Nanodots via In Situ Reduction for High-Performance Detection of Ethyl Acetate DOI Creative Commons
Qilin Wang, Wei Wang,

Yizhuo Fan

et al.

Sensors, Journal Year: 2024, Volume and Issue: 24(21), P. 6931 - 6931

Published: Oct. 29, 2024

Ethyl acetate is a critical medical indicator for detecting certain types of cancer. However, at present, available sensitive materials often exhibit drawbacks, such as high operating temperatures and poor responses to low concentrations ethyl acetate. In this study, ZnO nanorod sensing material was prepared using high-temperature annealing hydrothermally synthesized metal-organic framework (MOF) template. Au nanodots (AuNDs) were subsequently modified on the nanorods an in situ ion reduction, which provided better dispersion compared with that obtained common reductant method. A variety characterization methods indicate highly dispersed AuNDs, possess catalytic activity, loaded onto surface active centers, leading significant augmentation adsorption oxygen original material. Consequently, AuND@ZnO exhibited heightened responsiveness lower temperature. The Au@ZnO-based sensor has response rate (Ra/Rg) 41.8 20 ppm gas 140 °C, marking 17.4-fold increase Due its power consumption responsiveness, promising candidate detection applications.

Language: Английский

Citations

0
Unveiling a growth temperature-dependent ultra-sensitive tetragonal scheelite BiVO4 thin film-based gas sensor for ammonia volatilization at room temperature DOI Creative Commons

Santhosh Nallakumar,

Logu Thirumalaisamy,

S. Kalainathan

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(53), P. 39498 - 39510

Published: Jan. 1, 2024

A tetragonal scheelite BiVO 4 thin film shows high sensor response ( S = 900 for 75 ppm) to ammonia at room temperature (RT). Prolonged stability 58.2 25 ppm), good repeatability makes it a promising candidate an gas RT.

Language: Английский

Citations

0
Carbon and cobalt co-doped ZnO thin films for highly sensitive and selective ammonia detection at room temperature DOI Creative Commons
Anju Thomas, S. Kalainathan

Materials Advances, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Co and C co-doped ZnO thin films deposited via spray pyrolysis are highly selective to ammonia with a sensor response of 2729 50 ppm ammonia.

Language: Английский

Citations

0