Rationally design of hollow rambutan-like zinc ferrite sensing composites for high-performance toluene detection

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179234 - 179234

Published: Feb. 1, 2025

Language: Английский

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Performance and Mechanism Analysis of Hexagonal Co(OH)F/Carbon Quantum Dots Composite Sensor Synthesized by PVP-Assisted Method for Acetone Gas Detection

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

Published: March 28, 2025

Acetone gas sensitivity detection holds significant application value in environmental monitoring, industrial safety, and health assessment. This study presents the first report on assembly of carbon quantum dots (CQDs) surface hollow hexagonal Co(OH)F for efficient acetone detection. The fabricated sensor exhibits ability to detect at a low concentration 200 ppb 120 °C, demonstrating excellent moisture resistance long-term stability. incorporation CQDs not only reduces operating temperature but also enhances gas-sensing performance Co(OH)F, offering simple eco-friendly strategy optimizing sensors. We systematically analyzed synergistic effect between their role functional groups combine with surface, improving electron transfer efficiency potentially lowering activation energy molecule reactions through catalytic effects, enabling low-temperature modification chemistry by strengthens recognition capability. coupling metal hydroxyl fluoride plays crucial multiple mechanisms, providing an innovative approach development high-performance

Language: Английский

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F- dopants blocking hydroxyl interference: A facile solution for realizing humidity-resistive, selectivity adjustable, highly sensitive In2O3-based gas sensors

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162338 - 162338

Published: April 1, 2025

Language: Английский

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Construction of 2D TiO2@MoS2 Heterojunction Nanosheets for Efficient Toluene Gas Detection

Chemosensors, Journal Year: 2025, Volume and Issue: 13(5), P. 154 - 154

Published: April 22, 2025

Monitoring trace toluene exposure is critical for early-stage lung cancer screening via breath analysis, yet conventional chemiresistive sensors face fundamental limitations, including compromised selectivity in complex VOC matrices and humidity-induced signal drift, with prevailing p–n heterojunction architectures suffering from inherent charge recombination environmental instability. Herein, we pioneer a 2D core–shell n–n strategy through rational design of TiO2@MoS2 heterostructures, where vertically aligned MoS2 nanosheets are epitaxially grown on TiO2 derived graphene-templated synthesis, creating built-in electric fields at the interface that dramatically enhance carrier separation efficiency. At 240 °C, sensor exhibits superior response (Ra/Rg = 9.8 to 10 ppm toluene), outperforming 2.8). Additionally, demonstrates rapid response/recovery kinetics (9 s/16 s), low detection limit (50 ppb), excellent against interfering gases moisture. The enhanced performance attributed unidirectional electron transfer (TiO2 → MoS2) without hole losses, methyl-specific adsorption oxygen vacancy alignment, steric exclusion non-target VOCs size-selective interlayers. This work establishes transformative paradigm gas by leveraging physics synergy, overcoming long-standing limitations architectures.

Language: Английский

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A snowflake hexagonal arrangement of β-Co(OH)2/Co(OH)F: a strategy to improve polysulfide adsorption and shuttle effect in Li-S batteries

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 123, P. 116863 - 116863

Published: May 1, 2025

Language: Английский

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