Fabrication and Characterization of Hybrids with Graphene Derivatives/Analogues for Analytical Applications DOI
Theivasanthi Thirugnanasambandan,

Balaguru Venkatesh Sankar,

Manimehalai Muthumurugan

et al.

Engineering materials, Journal Year: 2024, Volume and Issue: unknown, P. 51 - 72

Published: Jan. 1, 2024

Language: Английский

Transparent TiO2/MoO3 Heterojunction-Based Photovoltaic Self-Powered Triethylamine Gas Sensor with IoT-Enabled Smartphone Interface DOI

Rahul Suresh Ghuge,

Sreelakshmi Madhavanunni Rekha,

Hajeesh Kumar Vikraman

et al.

ACS Sensors, Journal Year: 2024, Volume and Issue: 9(12), P. 6592 - 6604

Published: Nov. 26, 2024

Conventional gas sensors encounter a significant obstacle in terms of power consumption, making them unsuitable for integration with the next generation smartphones, wireless platforms, and Internet Things (IoT). Energy-efficient sensors, particularly self-powered can effectively tackle this problem. The researchers are strides advancing photovoltaic by employing diverse materials their compositions. Unfortunately, several these seem complex fabrication mainly target oxidizing species detection. To address issues, we have successfully employed transparent, cost-efficient solution processed bilayer TiO2/MoO3 heterojunction-based sensor superior VOC sensing capabilities, marking milestone field. scanning Kelvin probe (SKP) measurement reveals remarkable change contact potential difference (−23 mV/kPa) bilayered film after UV light exposure triethylamine (TEA) atmosphere, indicating highest reactivity between TEA molecules TiO2/MoO3. Under mode, further demonstrates exceptional sensitivity (∼2.35 × 10–3 ppm–1) to compared other studied VOCs, an admirable limit detection (22 ppm) signal-to-noise ratio (1540). Additionally, shows ability recognize estimate its composition binary mixture VOCs from similar class. strongest affinity toward molecule, lowest covalent bond energy, electron-donating nature may be attributed adsorption TEA. We demonstrate practical applicability prototype device connected smartphone via IoT, enabling continuous surveillance

Language: Английский

Citations

5
Structural Engineering and Surface Modification of Co MOF pores with Trisodium Citrate Influence for Enhanced Triethylamine Gas Detection DOI
Punitha Shanmugam, Xuming Wang, Junhui Hu

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179212 - 179212

Published: Feb. 1, 2025

Language: Английский

Citations

0
Enhanced photocatalytic hydrogen generation and degradation performance using a novel design of dual Co and W single metal atom oxides on the interstitial atomic line of TiO2–g-C3N4–rGO DOI
A. Raja, Rama Krishna Chava, Misook Kang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163000 - 163000

Published: April 1, 2025

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
Combinatorial Scanning Kelvin Probe and Density Functional Theory Studies on Selective n-Butanol Adsorption Properties of pH-Dependent Bi2WO6 Nanostructures DOI

Rahul Suresh Ghuge,

Rence Painappallil Reji,

Surya Velappa Jayaraman

et al.

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 8, 2024

Fast and effective detection of volatile organic compounds (VOCs) is a crucial criterion for developing stable room-temperature operable gas sensors. In this work, we have synthesized Bi2WO6 (BW) nanostructures using the hydrothermal method at pH 1 (BW-1), pH-3 (BW-3), 5 (BW-5), 7 (BW-7), 9 (BW-9) to study their VOC adsorption properties. X-ray diffraction confirms that both internal strain crystallite size increase with pH. Field-emission scanning electron microscope results showed change in morphology BW from flakes sheets. The obtained surface photovoltage, photoluminescence spectra, Raman photoelectron spectroscopy revealed defects oxygen vacancies Further, properties are examined Kelvin probe system through contact potential difference measurements dark visible light conditions air various VOCs like n-butanol, benzene, triethylamine, acetone. BW-9 sample has exhibited ∼40% enhanced photoresponse under an n-butanol atmosphere compared BW-1. chemiresistive sensing performance between 50 400 ppm exhibits sensitivity value 0.00816 ± 0.0007 ppm–1. Computational investigations density functional theory confirmed surface-adsorbed on shows higher affinity energy −0.877 eV among other VOCs. Overall, these combined experimental computational studies demonstrated selective behavior toward industrial pollutant.

Language: Английский

Citations

3
Fabrication and Characterization of Hybrids with Graphene Derivatives/Analogues for Analytical Applications DOI
Theivasanthi Thirugnanasambandan,

Balaguru Venkatesh Sankar,

Manimehalai Muthumurugan

et al.

Engineering materials, Journal Year: 2024, Volume and Issue: unknown, P. 51 - 72

Published: Jan. 1, 2024

Language: Английский

Citations

0