UV-Enhanced Formaldehyde Sensor Using Hollow In₂O₃@TiO₂ Double-Layer Nanospheres at Room Temperature

ACS Applied Materials & Interfaces, Год журнала: 2023, Номер 15(3), С. 4329 - 4342

Опубликована: Янв. 9, 2023

Hollow In2O3@TiO2 double-layer nanospheres were prepared via a facile water bath method using the sacrifice template of carbon nanospheres. It is shown that size In2O3/TiO2 nanocomposites 150-250 nm, thickness In2O3 shell about 10 and TiO2 15 nm. The sensing performances synthesized nanocomposites-based chemiresistive-type sensor to formaldehyde (HCHO) gas under UV light activation at room temperature have been studied. Compared pure In2O3- TiO2-based sensors, nanocomposite exhibits much better formaldehyde. response nanocomposite-based 1 ppm 3.8, time recovery are 28 50 s, respectively. detectable concentration can reach as low 0.06 ppm. role formed heterojunctions involved chemical reactions activated by investigated AC impedance spectroscopy in situ diffuse reflectance Fourier transform infrared spectroscopy. improvement properties could be attributed nanoheterojunctions between two components "combined photocatalytic effects" UV-light-emitting diode irradiation. Density functional theory calculations demonstrated introducing improve adsorption energy charge transfer materials.

Язык: Английский

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Synthesis of 1D LaFeO3 nanofibers/2D MXene heterostructures for formaldehyde detection at low temperature

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 415, С. 136011 - 136011

Опубликована: Май 21, 2024

Язык: Английский

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Oxygen vacancy and interface effect dual modulation of SnS2/SnO2 heterojunction for boosting formaldehyde detection at low temperature

Talanta, Год журнала: 2025, Номер 286, С. 127586 - 127586

Опубликована: Янв. 13, 2025

Язык: Английский

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Nanostructured metal oxide heterojunctions for chemiresistive gas sensors

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(44), С. 23742 - 23771

Опубликована: Янв. 1, 2023

Metal oxides have been extensively used in environmental monitoring, breath analysis, and food quality assessment. This review summarizes the effects of nanoscale heterojunctions on enhancing gas-sensing performance metal oxide devices.

Язык: Английский

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MnO2 enhanced low temperature HCHO sensing performance of SnO2

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 412, С. 135803 - 135803

Опубликована: Апрель 10, 2024

Язык: Английский

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A critical review of the analytical performance of the most recent MOS-based gas sensors for indoor air quality monitoring of WHO priority pollutants

TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 178, С. 117813 - 117813

Опубликована: Июнь 19, 2024

In the past few years, there has been significant progress in developing sensors for indoor air quality (IAQ) monitoring. Thanks to their miniaturization, low cost, and growing concerns people's well-being, these have become increasingly important. This paper reviews latest metal oxide semiconductor (MOS)-based gas published since 2019 WHO-priority pollutants. While MOS-based initially had limitations, including selectivity, high operating temperatures leading power consumption, interference from humidity, challenges overcome. Currently, can detect some of target gases at room temperature, achieving guideline values established human safety. instills optimism future role IAQ monitoring despite that still need be addressed.

Язык: Английский

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Nanocube-shaped In2O3@TiO2 core-shell based chemiresistive-type sensors for formaldehyde detection at room temperature

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 408, С. 135540 - 135540

Опубликована: Фев. 23, 2024

Язык: Английский

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Highly sensitive formaldehyde gas sensor based on SnO2/Zn2SnO4 hybrid structures

Building and Environment, Год журнала: 2024, Номер 262, С. 111781 - 111781

Опубликована: Авг. 1, 2024

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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Metal oxide semiconductor-based heterojunctions synthesized by wet-chemical strategies for efficient volatile organic compounds detection

Coordination Chemistry Reviews, Год журнала: 2025, Номер 538, С. 216735 - 216735

Опубликована: Апрель 21, 2025

Язык: Английский

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