Room temperature gas sensors for NH3 detection based on SnO2 films and lamellar-structured Ti3C2Tx MXene heterojunction nanocomposites

Applied Surface Science, Год журнала: 2024, Номер 660, С. 159976 - 159976

Опубликована: Март 24, 2024

Язык: Английский

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Engineering of metal oxide integrated metal organic frameworks (MO@ MOF) composites for energy and environment sector

Materials Science and Engineering B, Год журнала: 2024, Номер 313, С. 117909 - 117909

Опубликована: Дек. 16, 2024

Язык: Английский

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Electrospun WO3/TiO2 Core–Shell Nanowires for Triethylamine Gas Sensing

Chemosensors, Год журнала: 2025, Номер 13(2), С. 45 - 45

Опубликована: Фев. 2, 2025

In this work, WO3/TiO2 core–shell (C-S) nanowires (NWs) were successfully synthesized by the coaxial electrospinning method and subsequent high-temperature calcination treatment. After some microscopic structural characterizations, although prepared WO3–TiO2 TiO2–WO3 C-S NWs displayed quite different surface morphologies, both of shell coatings uniform their typical thicknesses extremely close, with mean values 22 20 nm, respectively. gas sensing tests, exhibited good selectivity towards triethylamine (TEA) without significant interfering gases. Compared bare WO3 TiO2 NWs, showed better performance. Specifically, optimal operating temperature response to 100 ppm TEA 130 °C 106, which reduced 70 increased 5.73 times compared WO3, Obviously, nanostructures contributed improving performance materials TEA. Finally, hypothetical mechanisms proposed, expected have important reference significance for design target products applied sensing.

Язык: Английский

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Pulsed Airstream‐Driven Hierarchical Micro‐Nano Pore Structured Triboelectric Nanogenerator for Wireless Self‐Powered Formaldehyde Sensing

Small, Год журнала: 2024, Номер 20(47)

Опубликована: Авг. 14, 2024

Abstract Formaldehyde (HCHO), as a common volatile organic compound, has serious impact on human health in the daily lives and industrial production scenarios. Given security issue of HCHO detection danger warning, ZIF‐8/copper foam based pulsed airstream‐driven triboelectric nanogenerator (ZCP‐TENG) is designed to develop self‐powered sensors. By combining contact electrification electrostatic induction, ZCP‐TENG can be utilized for airflow energy harvesting concentration detection. The short‐circuit current output power reach 2.0 µA 81 µW (20 ppm). With high surface area, abundant micro‐nano pores, excellent permeation flux, ZCP‐TENGs exhibit sensing response (61.3% at 100 ppm), low limit (≈2 rapid response/recovery time (14/15 s), which served highly sensitive selective sensor. connecting an intelligent wireless alarm, are construct warning system monitor remind exceedance situations. Moreover, by support vector machine model, difference concentrations quickly identified with average prediction accuracy 100%. This study illustrates that have broad application prospects provide guidance monitoring warnings.

Язык: Английский

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A novel Eu-MOF ratiometric fluorescent probe for visual detection of Hg2+, Cd2+ and formaldehyde

Journal of Photochemistry and Photobiology A Chemistry, Год журнала: 2024, Номер 452, С. 115583 - 115583

Опубликована: Март 9, 2024

Язык: Английский

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Rich oxygen vacancies in core–shell structured Co3O4-CuO-ZnO@ZIF-8 for boosting CO2 hydrogenation to methanol

Advanced Powder Technology, Год журнала: 2024, Номер 35(6), С. 104485 - 104485

Опубликована: Май 10, 2024

Язык: Английский

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High-performance Ag-modified ZnO coral-like nanosheets for enhanced ethanol gas sensing

Microchimica Acta, Год журнала: 2025, Номер 192(3)

Опубликована: Фев. 10, 2025

Язык: Английский

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Ppb-Level Detection of a Formaldehyde Gas Sensor Based on the Honeycomb SnO₂/SnSe₂ Heterostructure

ACS Applied Electronic Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 26, 2025

In this work, a low-temperature formaldehyde sensor based on hydrothermally synthesized tin dioxide/tin selenide (SnO2/SnSe2) nanostructure was demonstrated. The SnO2 nanosheets were decorated the SnSe2 nanoblocks. microstructural characterization proves unique morphology. At 150 °C, SnO2/SnSe2 composite gas exhibits more than three times response to compared pure SnO2, with of 13.47 10 ppm and recovery time 63 s/12 s. addition, is capable detecting at ppb level. also excellent repeatability, long-term performance stability, resistance humidity interference. n–n heterojunction formed between SnSe2, along its microstructure, significantly enhances sensor. adsorption behavior molecules sensitive material surfaces studied by using density functional theory.

Язык: Английский

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Pt-Embedded Metal–Organic Frameworks Deriving Pt/ZnO-In2O3 Electrospun Hollow Nanofibers for Enhanced Formaldehyde Gas Sensing

Chemosensors, Год журнала: 2024, Номер 12(6), С. 93 - 93

Опубликована: Май 31, 2024

Functionalization by noble metal catalysts and the construction of heterojunctions are two effective methods to enhance gas sensing performance oxide-based sensors. In this work, we adopt porous ZIF-8 as a catalyst substrate encapsulate ultra-small Pt nanoparticles. The Pt/ZnO-In2O3 hollow nanofibers derived from Pt/ZIF-8 were prepared facile electrospinning method. 25PtZI HNFs sensor possessed response value 48.3 100 ppm HCHO, 2.7 times higher than pristine In2O3, along with rapid response/recovery time (5/22 s), lower theoretical detection limit (74.6 ppb). improved properties can be attributed synergistic effects electron sensitization catalytic nanoparticles, high surface O− absorbing capability heterojunctions. present study paves new way design formaldehyde sensors in practical application.

Язык: Английский

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Highly-enhanced stability, anti-humidity, selectivity and sensitivity of Pr-doped In2O3 sensors to formaldehyde gas

Advanced Powder Technology, Год журнала: 2024, Номер 35(7), С. 104561 - 104561

Опубликована: Июль 1, 2024

Язык: Английский

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