Impact of ZnO nanorods vs nanotrees morphology on NO2 gas sensor performance DOI

G. M. Alatkar,

M. Kadam,

Rahul Bhise

et al.

Journal of Materials Science Materials in Electronics, Journal Year: 2025, Volume and Issue: 36(3)

Published: Jan. 1, 2025

Language: Английский

ZnO@ activated carbon derived from wood sawdust as adsorbent for removal of methyl red and methyl orange from aqueous solutions DOI Creative Commons

Nessma S. M. Sayed,

Abdelaal S. A. Ahmed,

Mohamed H. Abdallah

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: March 5, 2024

Abstract Activated carbon (AC) and ZnO@AC composite derived from wood sawdust were prepared to be utilized as adsorbents for methyl red (MR) orange (MO) anionic dyes the aqueous solutions. The maximum adsorption capacity of AC toward both was achieved in strong acidic medium (pH = 3), under stirring 60 min. kinetic studies revealed that MR MO onto fitted well with pseudo-second-order model. Furthermore, intraparticle diffusion Elovich models confirmed is controlled by external surfaces, chemisorption process. isotherm results indicated dye occurred via monolayer adsorption, estimated capacities higher than those AC. Thermodynamic analysis suggested endothermic spontaneous. mechanism MR, proposed electrostatic bonding, π–π interactions, ion exchange, while H-bonding n–π interactions minor contributors. This study reveals potential use carbon-based removal wastewater.

Language: Английский

Citations

45
ZnO nanostructures – Future frontiers in photocatalysis, solar cells, sensing, supercapacitor, fingerprint technologies, toxicity, and clinical diagnostics DOI
Anees A. Ansari, Ruichan Lv, Shili Gai

et al.

Coordination Chemistry Reviews, Journal Year: 2024, Volume and Issue: 515, P. 215942 - 215942

Published: May 20, 2024

Language: Английский

Citations

39
MoS2 and MoS2-based nanocomposites for enhanced toluene sensing response at room temperature DOI
Ruchika Thayil, Kurugundla Gopi Krishna, Sudhir Cherukulappurath

et al.

Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 46, P. 104134 - 104134

Published: March 1, 2024

Language: Английский

Citations

18
Room-Temperature Gas Identification via Photochemically Activated p-type CuCrO2 Nanostructured Films Using Machine Learning DOI

Yan-Fong Lin,

Zi-Chun Tseng,

Wen–Jeng Hsueh

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

Operating gas sensors at different temperatures is a common approach to improve selectivity, but it often compromises long-term stability and hinders real-time detection. In this study, we introduce photochemically activated p-type CuCrO2 nanostructured thin films, which generate distinct optical fingerprints under UV light intensities, enabling identification. The hexagonal-like nanostructure of the film increases surface area, significantly enhancing sensor's sensitivity selectivity. sensor demonstrated response approximately ∼3.6 for various concentrations N-propanol, NO2, NH3, ethanol, methanol, formaldehyde 20 mW/cm2 illumination, with times ranging from 50 200 s. By applying machine learning techniques, achieved classification accuracy exceeding 90%. Furthermore, regression analysis enhanced predictive concentrations, R2 values above 0.9. also exhibited excellent stability, only 7.4% degradation over 90 days consistent performance varying humidity. This work introduces strategy address selectivity challenges, making these suitable environmental monitoring industrial safety applications.

Language: Английский

Citations

5
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
ZnO/GaN n-n heterojunction porous nanosheets for ppb-level NO2 gas sensors DOI
Zhilin Feng, Hongtao Wang, Yaodan Zhang

et al.

Sensors and Actuators B Chemical, Journal Year: 2023, Volume and Issue: 396, P. 134629 - 134629

Published: Sept. 17, 2023

Language: Английский

Citations

37
Room temperature NH3 gas sensor based on PMMA/RGO/ZnO nanocomposite films fabricated by in-situ solution polymerization DOI
Ali Raza, Rehan Abid, Imran Murtaza

et al.

Ceramics International, Journal Year: 2023, Volume and Issue: 49(16), P. 27050 - 27059

Published: June 3, 2023

Language: Английский

Citations

30
Lattice distortion effects induced by Li+ co-doping on ZnO:Tb3+ phosphors: Photoluminescence and unusual hypersensitive ⁵D₄ → ⁷F₀ transition DOI
Abeer S. Altowyan, Mustafa Burak Çoban, Ümit H. Kaynar

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(13), P. 24036 - 24044

Published: April 16, 2024

Language: Английский

Citations

11
Camellia sinensis-mediated green synthesis of ZnO nanoparticles: An eco-friendly approach for high-performance gas sensing DOI

G. Umadevi,

Kurugundla Gopi Krishna

Sensors and Actuators A Physical, Journal Year: 2024, Volume and Issue: 374, P. 115479 - 115479

Published: May 14, 2024

Language: Английский

Citations

11
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