Single-atom silver loaded on tungsten oxide with oxygen vacancies for high performance triethylamine gas sensors

2021 ◽  
Vol 9 (13) ◽  
pp. 8704-8710
Author(s):  
Jiyang Zeng ◽  
Qian Rong ◽  
Bin Xiao ◽  
Ruohan Yu ◽  
Baoye Zi ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Volatile Compounds ◽  
Gas Sensors ◽  
High Performance ◽  
Large Scale ◽  
Oxygen Vacancies ◽  
Single Atom ◽  
High Price ◽  
Sensor Materials ◽  
Low Sensitivity

Traditional sensor materials for detecting gaseous and volatile compounds still have relatively low sensitivity and high price, which limits their large-scale applications.

scholarly journals Catalyst-Free Vapor-Phase Method for Direct Integration of Gas Sensing Nanostructures with Polymeric Transducing Platforms

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Stella Vallejos ◽  
Isabel Gràcia ◽  
Eduardo Figueras ◽  
Carles Cané
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
Large Scale ◽  
Oxygen Vacancies ◽  
Gas Sensing ◽  
Chemical Vapor ◽  
Cost Effective ◽  
Phase Method ◽  
High Concentration ◽  
Aspect Ratios

Tungsten oxide nanoneedles (NNs) are grown and integrated directly with polymeric transducing platforms for gas sensors via aerosol-assisted chemical vapor deposition (AACVD) method. Material analysis shows the feasibility to grow highly crystalline nanomaterials in the form of NNs with aspect ratios between 80 and 200 and with high concentration of oxygen vacancies at the surface, whereas gas testing demonstrates moderate sensing responses to hydrogen at concentrations between 10 ppm and 50 ppm, which are comparable with results for tungsten oxide NNs grown on silicon transducing platforms. This method is demonstrated to be an attractive route to fabricate next generation of gas sensors devices, provided with flexibility and functionality, with great potential in a cost effective production for large-scale applications.

scholarly journals Nanostructured Tungsten Oxide Composite for High-Performance Gas Sensors

Sensors ◽  
2015 ◽  
Vol 15 (10) ◽  
pp. 27035-27046 ◽  
Author(s):  
Siyuan Chen ◽  
Ali Aldalbahi ◽  
Peter Feng
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
High Performance ◽  
Oxide Composite

Bridging or in-Plane Oxygen Vacancies for a High-Performance Chemoresistive Gas Sensors? a First-Principles Study

2020 ◽  
Vol MA2020-01 (28) ◽  
pp. 2111-2111
Author(s):  
Soufiane Krik ◽  
Andrea Gaiardo ◽  
Matteo Valt ◽  
Barbara Fabbri ◽  
Cesare Malagù ◽  
...  
Keyword(s):  
Gas Sensors ◽  
First Principles ◽  
High Performance ◽  
Oxygen Vacancies ◽  
First Principles Study

Electrospraying preparation of metal germanate nanospheres for high-performance lithium-ion batteries and room-temperature gas sensors

Nanoscale ◽  
2019 ◽  
Vol 11 (25) ◽  
pp. 12116-12123 ◽  
Author(s):  
Rui Li ◽  
Renmu Zhang ◽  
Zheng Lou ◽  
Tingting Huang ◽  
Kai Jiang ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Gas Sensors ◽  
High Performance ◽  
Large Scale ◽  
Room Temperature ◽  
Lithium Ion ◽  
Ammonia Gas ◽  
Potential Applications ◽  
Ammonia Gas Sensors

Metal germanate nanospheres including Ca2Ge7O16, Zn2GeO4 and SrGe4O9 were prepared by a facile and large-scale electrospraying process. They have potential applications in lithium-ion batteries and room temperature ammonia gas sensors.

Scalable Fabrication of High-Performance NO2 Gas Sensors Based on Tungsten Oxide Nanowires by On-Chip Growth and RuO2-Functionalization

2014 ◽  
Vol 6 (15) ◽  
pp. 12022-12030 ◽  
Author(s):  
Phung Thi Hong Van ◽  
Nguyen Hoang Thanh ◽  
Vu Van Quang ◽  
Nguyen Van Duy ◽  
Nguyen Duc Hoa ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Gas Sensors ◽  
High Performance ◽  
Oxide Nanowires ◽  
No2 Gas Sensors ◽  
On Chip

Self-doped tungsten oxide films induced by in situ carbothermal reduction for high performance electrochromic devices

2020 ◽  
Vol 8 (40) ◽  
pp. 13999-14006
Author(s):  
Lijun Zhou ◽  
Peng Wei ◽  
Huajing Fang ◽  
Wenting Wu ◽  
Liangliang Wu ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
Carbothermal Reduction ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Low Cost ◽  
Oxide Films ◽  
Electrochromic Devices

Self-doping WO3−x with nanopores and oxygen vacancies is prepared by a low-cost and eco-friendly route for high performance electrochromic devices.

scholarly journals MoS2 Nanosheets Sensitized with Quantum Dots for Room-Temperature Gas Sensors

2020 ◽  
Vol 12 (1) ◽  
Author(s):  
Jingyao Liu ◽  
Zhixiang Hu ◽  
Yuzhu Zhang ◽  
Hua-Yao Li ◽  
Naibo Gao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Gas Sensors ◽  
High Performance ◽  
Large Scale ◽  
Room Temperature ◽  
Gas Sensing ◽  
Low Cost ◽  
Surface And Interface ◽  
Sensor Performance ◽  
Semiconductor Gas Sensors

AbstractThe Internet of things for environment monitoring requires high performance with low power-consumption gas sensors which could be easily integrated into large-scale sensor network. While semiconductor gas sensors have many advantages such as excellent sensitivity and low cost, their application is limited by their high operating temperature. Two-dimensional (2D) layered materials, typically molybdenum disulfide (MoS2) nanosheets, are emerging as promising gas-sensing materials candidates owing to their abundant edge sites and high in-plane carrier mobility. This work aims to overcome the sluggish and weak response as well as incomplete recovery of MoS2 gas sensors at room temperature by sensitizing MoS2 nanosheets with PbS quantum dots (QDs). The huge amount of surface dangling bonds of QDs enables them to be ideal receptors for gas molecules. The sensitized MoS2 gas sensor exhibited fast and recoverable response when operated at room temperature, and the limit of NO2 detection was estimated to be 94 ppb. The strategy of sensitizing 2D nanosheets with sensitive QD receptors may enhance receptor and transducer functions as well as the utility factor that determine the sensor performance, offering a powerful new degree of freedom to the surface and interface engineering of semiconductor gas sensors.

scholarly journals High performance platinum single atom electrocatalyst for oxygen reduction reaction

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Jing Liu ◽  
Menggai Jiao ◽  
Lanlu Lu ◽  
Heather M. Barkholtz ◽  
Yuping Li ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Fuel Cells ◽  
Fuel Cell ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
High Performance ◽  
Large Scale ◽  
Theoretical Calculations ◽  
Reduction Reaction ◽  
Single Atom

Abstract For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/methanol tolerance for the cathodic oxygen reduction reaction. The acidic single-cell with such a catalyst as cathode delivers high performance, with power density up to 680 mW cm−2 at 80 °C with a low platinum loading of 0.09 mgPt cm−2, corresponding to a platinum utilization of 0.13 gPt kW−1 in the fuel cell. Good fuel cell durability is also observed. Theoretical calculations reveal that the main effective sites on such platinum single-atom electrocatalysts are single-pyridinic-nitrogen-atom-anchored single-platinum-atom centres, which are tolerant to carbon monoxide/methanol, but highly active for the oxygen reduction reaction.

High-performance gas sensing achieved by mesoporous tungsten oxide mesocrystals with increased oxygen vacancies

2013 ◽  
Vol 1 (30) ◽  
pp. 8653 ◽  
Author(s):  
Dong Wang ◽  
Jianbo Sun ◽  
Xuan Cao ◽  
Yihan Zhu ◽  
Qingxiao Wang ◽  
...  
Keyword(s):  
Tungsten Oxide ◽  
High Performance ◽  
Oxygen Vacancies ◽  
Gas Sensing
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