Multifunctional respiration-driven triboelectric nanogenerator for self-powered detection of formaldehyde in exhaled gas and respiratory behavior

Nano Energy, Год журнала: 2022, Номер 102, С. 107711 - 107711

Опубликована: Авг. 18, 2022

Язык: Английский

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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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ZnSnO3 nanocubes/Ti3C2Tx MXene composites for enhanced formaldehyde gas sensing properties at room temperature

Applied Surface Science, Год журнала: 2022, Номер 598, С. 153861 - 153861

Опубликована: Май 31, 2022

Язык: Английский

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Ce doped SnO/SnO2 heterojunctions for highly formaldehyde gas sensing at low temperature

Sensors and Actuators B Chemical, Год журнала: 2022, Номер 373, С. 132640 - 132640

Опубликована: Сен. 10, 2022

Язык: Английский

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Synthesis and characterization of TiO2 nanomaterials for sensing environmental volatile compounds (VOCs): A review

TrAC Trends in Analytical Chemistry, Год журнала: 2023, Номер 170, С. 117454 - 117454

Опубликована: Ноя. 26, 2023

Язык: Английский

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The sensitivity enhancement of TiO₂-based VOCs sensor decorated by gold at room temperature

Nanotechnology, Год журнала: 2023, Номер 34(25), С. 255501 - 255501

Опубликована: Март 23, 2023

Detection of hazardous toxic gases for air pollution monitoring and medical diagnosis has attracted the attention researchers in order to realize sufficiently sensitive gas sensors. In this paper, we fabricated characterized a Titanium dioxide (TiO2)-based sensor enhanced using gold nanoparticles. Thermal oxidation sputter deposition methods were used synthesize sensor. X-ray diffraction analysis was determine anatase structure TiO2samples. It found that presence nanoparticles on surface TiO2enhances sensitivity response sensors by up about 40%. The showed 1.1, 1.07 1.03 50 ppm acetone, methanol ethanol vapors at room temperature, respectively. Additionally, reduce s time (about 50% reduction) vapor; demonstrated recovery decorated TiO2sensor is less than 40 s. Moreover, explain improved performance depends adsorption-desorption mechanism, chemical sensitization electronic

Язык: Английский

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MXene/NiO Composites for Chemiresistive-Type Room Temperature Formaldehyde Sensor

Chemosensors, Год журнала: 2023, Номер 11(4), С. 258 - 258

Опубликована: Апрель 21, 2023

In this work, MXene/NiO-composite-based formaldehyde (HCHO) sensing materials were successfully synthesized by an in situ precipitation method. The heterostructures between the MXene and NiO nanoparticles verified transmission electron microscopy (TEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS). HCHO performance of MXene/NiO-based chemiresistive-type sensors was investigated. Compared to pure materials, MXene/NiO-P2-based sensor gas at room temperature significantly enhanced formation MXene/NiO heterojunctions. response MXene/NiO-P2 50 ppm 8.8, which much higher than that NiO. At temperature, detectable concentration 1 ppm, recovery time 2 279 s 346 s, respectively. also exhibited a good selectivity long-term stability for 56 days. Fourier transform infrared (FTIR) spectra sensor, when exposed different times, investigated verify adsorption reaction products molecules.

Язык: Английский

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Metal-organic framework-derived oxygen-rich vacancies and porous TiO2 nanotablets for hydrogen detection with high response at room temperature

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 407, С. 135471 - 135471

Опубликована: Фев. 9, 2024

Язык: Английский

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Review on development of metal-oxide and 2-D material based gas sensors under light-activation

Current Opinion in Solid State and Materials Science, Год журнала: 2024, Номер 30, С. 101160 - 101160

Опубликована: Апрель 16, 2024

Язык: Английский

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Homojunction TiO2 thin film-based room-temperature working H2 sensors with non-noble metal electrodes

Sensors and Actuators B Chemical, Год журнала: 2023, Номер 398, С. 134675 - 134675

Опубликована: Сен. 26, 2023

Язык: Английский

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