Improved Charge Transfer for NO2 Gas Sensors by Using 0D SnS Quantum Dot/2D WSe2 Heterostructures DOI
Li-Hsin Cheng, Utkarsh Kumar, Zu-Yin Deng

и другие.

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(11), С. 9506 - 9514

Опубликована: Май 19, 2023

A highly sensitive array of two-dimensional (2D) WSe2 nanosheets integrated with zero-dimensional (0D) SnS quantum dots was synthesized by combining liquid-phase exfoliation and wet chemical synthesis methods. The characterization results scanning electron microscopy (SEM), transmission (TEM), X-ray diffraction (XRD) revealed the formation WSe2/SnS heterostructures, which enable a cyclic reproducible high gas sensing response. role allocation on verified using density functional theory (DFT) calculations. result indicates that top alignment bottom layer act as adsorption carrier conduction layer, respectively. charge interactions heterostructures were systematically explored monitoring changes in transferred characteristics at room temperature (27 °C) after introducing 25–100 ppb NO2. highest response toward NO2 found to be 1.08 25 LOD 10.6 ppb. experimental simulation transfer across active sites increased incorporating WSe2. showed an abrupt reliable under periodic injection unambiguously achieved such heterostructures. sensor also exhibited satisfactory stability accuracy selectivity is not affected humidity temperature. DFT calculations used explain mechanism heterojunction for nanocomposites.

Язык: Английский

CoO-SnSe monolayer: A high potential candidate for SF6 characteristic decomposition gas adsorption and detection DOI
Jianjun Cao, Mingxiang Wang, Yiyi Zhang

и другие.

Colloids and Surfaces A Physicochemical and Engineering Aspects, Год журнала: 2024, Номер 688, С. 133671 - 133671

Опубликована: Март 11, 2024

Язык: Английский

Процитировано

21

Metal oxide semiconductor-based core-shell nanostructures for chemiresistive gas sensing: A review DOI

Huiwu Long,

Yanqiong Li, Ke Chai

и другие.

Sensors and Actuators B Chemical, Год журнала: 2024, Номер 417, С. 136183 - 136183

Опубликована: Июнь 26, 2024

Язык: Английский

Процитировано

20

Metal Oxide Semiconductor Nanostructure Gas Sensors with Different Morphologies DOI Creative Commons
Ali Mirzaei,

Hamid Reza Ansari,

Mehrdad Shahbaz

и другие.

Chemosensors, Год журнала: 2022, Номер 10(7), С. 289 - 289

Опубликована: Июль 21, 2022

There is an increasing need for the development of low-cost and highly sensitive gas sensors environmental, commercial, industrial applications in various areas, such as hazardous monitoring, safety, emission control combustion processes. Considering this, resistive-based using metal oxide semiconductors (MOSs) have gained special attention owing to their high sensing performance, stability, low cost synthesis fabrication. The relatively final costs these allow commercialization; consequently, they are widely used available at prices. This review focuses on important MOSs with different morphologies, including quantum dots, nanowires, nanofibers, nanotubes, hierarchical nanostructures, other structures fabrication resistive sensors.

Язык: Английский

Процитировано

67

Highly sensitive ethylene glycol gas sensor based on ZnO/rGO nanosheets DOI
Jijun Ding,

Hangfei Dai,

Haixia Chen

и другие.

Sensors and Actuators B Chemical, Год журнала: 2022, Номер 372, С. 132655 - 132655

Опубликована: Сен. 13, 2022

Язык: Английский

Процитировано

62

Wearable Nano-Based Gas Sensors for Environmental Monitoring and Encountered Challenges in Optimization DOI Creative Commons
Sara Hooshmand, Panagiotis Kassanos, Meysam Keshavarz

и другие.

Sensors, Год журнала: 2023, Номер 23(20), С. 8648 - 8648

Опубликована: Окт. 23, 2023

With a rising emphasis on public safety and quality of life, there is an urgent need to ensure optimal air quality, both indoors outdoors. Detecting toxic gaseous compounds plays pivotal role in shaping our sustainable future. This review aims elucidate the advancements smart wearable (nano)sensors for monitoring harmful pollutants, such as ammonia (NH3), nitric oxide (NO), nitrous (N2O), nitrogen dioxide (NO2), carbon monoxide (CO), (CO2), hydrogen sulfide (H2S), sulfur (SO2), ozone (O3), hydrocarbons (CxHy), fluoride (HF). Differentiating this from its predecessors, we shed light challenges faced enhancing sensor performance offer deep dive into evolution sensing materials, substrates, electrodes, types sensors. Noteworthy materials robust detection systems encompass 2D nanostructures, nanomaterials, conducting polymers, nanohybrids, metal semiconductors. A dedicated section dissects significance circuit integration, miniaturization, real-time sensing, repeatability, reusability, power efficiency, gas-sensitive material deposition, selectivity, sensitivity, stability, response/recovery time, pinpointing gaps current knowledge offering avenues further research. To conclude, provide insights suggestions prospective trajectory nanosensors addressing extant challenges.

Язык: Английский

Процитировано

39

Conjugated microporous polymers for advanced chemical sensing applications DOI

Weisi He,

Ju Duan, He Liu

и другие.

Progress in Polymer Science, Год журнала: 2023, Номер 148, С. 101770 - 101770

Опубликована: Дек. 14, 2023

Язык: Английский

Процитировано

39

Room‐Temperature NH3 Sensor Based on SnO2 Quantum Dots Functionalized SnS2 Nanosheets DOI
Jinzhou Bai, Yanbai Shen, Sikai Zhao

и другие.

Advanced Materials Technologies, Год журнала: 2023, Номер 8(8)

Опубликована: Янв. 29, 2023

Abstract Traditional metal oxide semiconductor gas sensors are facing significant challenges for portable devices and integration due to large power consumption caused by high working temperature. 2D nanomaterials with specific surface areas, rich active sites, tunable electrical properties proved be promising candidates room‐temperature sensors. However, several disadvantages including weak response, sluggish response/recovery kinetics, poor selectivity still need overcome high‐performance Herein, SnO 2 quantum dots (QDs) a diameter of ≈3 nm functionalized SnS nanosheets thickness ≈17 synthesized via two‐step solvothermal method, which exhibits response 11.1 100 ppm NH 3 at room temperature 25 °C fast speed good repeatability, selectivity, long‐term stability. The sensing mechanism is mainly ascribed 0D/2D heterostructure, synergistic effect, n‐n heterojunction constructed across the interfaces between QDs nanosheets. as‐prepared may contribute reasonable design heterostructure 0D nanomaterials, offer candidate detection.

Язык: Английский

Процитировано

29

Recent Advancements in TiO2 Nanostructures: Sustainable Synthesis and Gas Sensing DOI Creative Commons
Gayan W. C. Kumarage,

Hadjer Hakkoum,

Elisabetta Comini

и другие.

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

Процитировано

29

Room-Temperature NO2 Sensing of CVD-Modified WS2–WSe2 Heterojunctions DOI Creative Commons
Abderrahim Moumen, Rajashree Konar, Dario Zappa

и другие.

ACS Applied Nano Materials, Год журнала: 2023, Номер 6(9), С. 7323 - 7329

Опубликована: Май 4, 2023

Two-dimensional (2D) semiconducting heterojunction chemical sensors are in high demand because of their enhanced response, stability, and selectivity. However, fine-tuning heterojunctions using vapor deposition growth still needs further research. Our present study focuses on the ambient pressure (CVD) synthesis hexagonal tungsten sulfide-tungsten selenide (WS2–WSe2) p–p (as a 2D–2D arrangement). We use liquid-phase exfoliation method to disperse bulk WS2 WSe2 decorate large flakes with smaller nanosheets CVD. Electron microscopy related surface investigations reveal homogeneity drop-casting. Two drops from exfoliated dispersion were drop-cast transducer NO2 response sensing properties. The sensor showed long-term stability (>2 months), even at humidity levels (40–90%). gas-sensing properties this layered heterojunction-based nanocomposite strongly suggest an affinity toward gas, leading improved independent effects,

Язык: Английский

Процитировано

24

Borophene-based nanomaterials: Promising candidates for next-generation gas/vapor chemiresistors DOI
Vishal Chaudhary,

Sonu Sonu,

Bakr Ahmed Taha

и другие.

Journal of Material Science and Technology, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

Процитировано

17