A Self‐Powered Portable Nanowire Array Gas Sensor for Dynamic NO₂ Monitoring at Room Temperature

Advanced Materials, Год журнала: 2022, Номер 35(12)

Опубликована: Дек. 11, 2022

The fast development of the Internet Things (IoT) has driven an increasing consumer demand for self-powered gas sensors real-time data collection and autonomous responses in industries such as environmental monitoring, workplace safety, smart cities, personal healthcare. Despite intensive research rapid progress field, most reported devices, specifically NO2 air pollution have limited sensitivity, selectivity, scalability. Here, a novel photovoltaic sensor is demonstrated based on axial p-i-n homojunction InP nanowire (NW) arrays, that overcome these limitations. optimized innovative NW array device designed by numerical simulation insights into sensing mechanisms performance enhancement. Without power source, this achieves 84% response to 1 ppm records limit detection down sub-ppb level, with little dependence incident light intensity, even under <5% sun illumination. Based great fidelity, integrated commercial microchip interface evaluate its context dynamic monitoring motor vehicle exhaust. results show compound semiconductor nanowires can form promising platforms suitable future mega-scale IoT systems.

Язык: Английский

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Room temperature triethylamine gas sensor with excellent performances based on novel porous CuO foam via a simple and facile route

Sensors and Actuators B Chemical, Год журнала: 2023, Номер 390, С. 133934 - 133934

Опубликована: Май 8, 2023

Язык: Английский

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Novel in-situ deposited V2O5 nanorods array film sensor with enhanced gas sensing performance to n-butylamine

Chemical Engineering Journal, Год журнала: 2023, Номер 459, С. 141505 - 141505

Опубликована: Янв. 18, 2023

Язык: Английский

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Oxygen vacancies induced by lanthanum-doped indium oxide nanofibers for promoted temperature-dependent triethylamine and formaldehyde sensing

Journal of Hazardous Materials, Год журнала: 2023, Номер 465, С. 133148 - 133148

Опубликована: Дек. 1, 2023

Язык: Английский

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Biomimetic gas sensor derived from disposable bamboo chopsticks for highly sensitive and selective detection of NH3

Chemical Engineering Journal, Год журнала: 2023, Номер 462, С. 142203 - 142203

Опубликована: Март 2, 2023

Язык: Английский

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UV-triggered carrier transport regulation of fibrous NiO/SnO2 heterostructures for triethylamine detection

Chemical Engineering Journal, Год журнала: 2023, Номер 476, С. 146687 - 146687

Опубликована: Окт. 14, 2023

Язык: Английский

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Highly selective room temperature ammonia gas sensors based on d-band C-SnO₂ and response behavior induced by oxidative and reductive role shifts

Journal of Materials Chemistry A, Год журнала: 2023, Номер 11(20), С. 10565 - 10576

Опубликована: Янв. 1, 2023

The N-type response presents a dynamic balance of O 2 oxidation and NH 3 reduction, while the P-type CO catalyzed reduction oxidation. shift order their oxidative reductive roles varies.

Язык: Английский

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Effect of doping concentration on structural, vibrational, morphological and colloidal stability of Zn doped NiO nanoparticles for gas sensor applications

Ceramics International, Год журнала: 2023, Номер 49(14), С. 23903 - 23911

Опубликована: Апрель 30, 2023

Язык: Английский

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Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing

Nanomaterials, Год журнала: 2023, Номер 13(8), С. 1424 - 1424

Опубликована: Апрель 20, 2023

The search for sustainable technology-driven advancements in material synthesis is a new norm, which ensures low impact on the environment, production cost, and workers’ health. In this context, non-toxic, non-hazardous, low-cost materials their methods are integrated to compete with existing physical chemical methods. From perspective, titanium oxide (TiO2) one of fascinating because its non-toxicity, biocompatibility, potential growing by Accordingly, TiO2 extensively used gas-sensing devices. Yet, many nanostructures still synthesized lack mindfulness environmental methods, results serious burden practical commercialization. This review provides general outline advantages disadvantages conventional preparation. Additionally, detailed discussion growth green included. Furthermore, applications approaches improve key functionality sensors, including response time, recovery repeatability, stability, discussed detail latter parts review. At end, concluding included provide guidelines selection techniques properties TiO2.

Язык: Английский

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Wearable Dual-Signal NH₃ Sensor with High Sensitivity for Non-invasive Diagnosis of Chronic Kidney Disease

Langmuir, Год журнала: 2023, Номер 39(9), С. 3420 - 3430

Опубликована: Фев. 22, 2023

NH3 gas in human exhaled breath contains abundant physiological information related to health, especially chronic kidney disease (CKD). Unfortunately, up now, most wearable sensors show inevitable defects (low sensitivity, easy be interfered by the environment, etc.), which may lead misdiagnosis of CKD. To solve above dilemma, a nanoporous, heterogeneous, and dual-signal (optical electrical) sensor mask is developed successfully. More specifically, polyacrylonitrile/bromocresol green (PAN/BCG) nanofiber film as visual polyacrylonitrile/polyaniline/reduced graphene oxide (PAN/PANI/rGO) resistive are constructed. Due high specific surface area binding sites these two films, they exhibit good sensing performance. However, although (PAN/BCG film) simple without need any detecting facilities quite stable when temperature humidity change, it shows poor sensitivity resolution. In comparison, (PAN/PANI/rGO fast response, resolution, but its electrical signal easily external environment (such humidity, temperature, etc.). Considering that principles between significantly different, containing both further explored. Our data prove signals this can not only work well interference with each other also complement improve accuracy, indicating potential application non-invasive diagnosis

Язык: Английский

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