Synthesis and optical–electrochemical gas sensing applications of Ni-doped LiFePO4 nano-particles

2016 ◽  
Vol 40 (1) ◽  
pp. 295-301 ◽  
Author(s):  
N. Patima ◽  
Y. Abliz ◽  
I. Kiminori
Keyword(s):  
Hydrothermal Method ◽  
Room Temperature ◽  
Gas Sensing ◽  
Semiconductor Material ◽  
Nano Particles ◽  
Sensing Applications ◽  
One Step

A semiconductor material (LiFeNiPO4) was prepared using a one-step hydrothermal method and then its gas sensing performances at room temperature were investigated.

scholarly journals Transforming Pt-SnO2 Nanoparticles into Pt-SnO2 Composite Nanoceramics for Room-Temperature Hydrogen-Sensing Applications

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2123
Author(s):  
Ming Liu ◽  
Caochuang Wang ◽  
Pengcheng Li ◽  
Liang Cheng ◽  
Yongming Hu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Sintering Temperature ◽  
Sno2 Nanoparticles ◽  
Hydrogen Sensing ◽  
Sensing Applications ◽  
Nanostructured Metal Oxides ◽  
Low Dimensional ◽  
Sensing Characteristics ◽  
Nanostructured Metal

Many low-dimensional nanostructured metal oxides (MOXs) with impressive room-temperature gas-sensing characteristics have been synthesized, yet transforming them into relatively robust bulk materials has been quite neglected. Pt-decorated SnO2 nanoparticles with 0.25–2.5 wt% Pt were prepared, and highly attractive room-temperature hydrogen-sensing characteristics were observed for them all through pressing them into pellets. Some pressed pellets were further sintered over a wide temperature range of 600–1200 °C. Though the room-temperature hydrogen-sensing characteristics were greatly degraded in many samples after sintering, those samples with 0.25 wt% Pt and sintered at 800 °C exhibited impressive room-temperature hydrogen-sensing characteristics comparable to those of their counterparts of as-pressed pellets. The variation of room-temperature hydrogen-sensing characteristics among the samples was explained by the facts that the connectivity between SnO2 grains increases with increasing sintering temperature, and Pt promotes oxidation of SnO2 at high temperatures. These results clearly demonstrate that some low-dimensional MOX nanocrystals can be successfully transformed into bulk MOXs with improved robustness and comparable room-temperature gas-sensing characteristics.

scholarly journals Room-temperature synthesis and CO2-gas sensitivity of bismuth oxide nanosensors

RSC Advances ◽  
2020 ◽  
Vol 10 (29) ◽  
pp. 17217-17227 ◽  
Author(s):  
Pritamkumar V. Shinde ◽  
Nanasaheb M. Shinde ◽  
Shoyebmohamad F. Shaikh ◽  
Damin Lee ◽  
Je Moon Yun ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Bismuth Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Deposition Method ◽  
Gas Sensitivity ◽  
Temperature Synthesis ◽  
Co2 Gas ◽  
Surface Areas ◽  
Sensing Applications

Room-temperature (27 °C) synthesis and carbon dioxide (CO2)-gas-sensing applications of bismuth oxide (Bi2O3) nanosensors obtained via a direct and superfast chemical-bath-deposition method (CBD) with different surface areas and structures.

scholarly journals A Room Temperature Gas Sensor Based on Sulfonated SWCNTs for the Detection of NO and NO2

Sensors ◽  
2019 ◽  
Vol 19 (5) ◽  
pp. 1116 ◽  
Author(s):  
Eusebiu Ionete ◽  
Stefan Spiridon ◽  
Bogdan Monea ◽  
Elena Stratulat
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Electrical Response ◽  
Long Term Stability ◽  
Sensing Applications ◽  
Specific Configuration ◽  
P Type ◽  
Walled Carbon Nanotubes ◽  
Type Response

The electrical response of sulfonated single-walled carbon nanotubes (SWCNTs) to NO and NO2, for gas sensing applications, at room temperature, is reported in this work. A specific configuration based on SWCNT deposition between double pair configuration gold electrodes, supported on a substrate, was considered for the sensing device; employed characterization technique where FTIR and SEM. The experimental results showed a p-type response of the sulfonated SWCNTs, with decrease in resistance, under exposure to NO gas (40–200 ppb) and NO2 (40–200 ppb). Also, the sensor responses to successive exposures at NO2 800 ppb together with investigation of long term stability, at 485 ppb for NO, are reported. The reaction mechanism in case of NO and NO2 detection with sulfonated SWCNTs is presented.

Synthesis of Hierarchical Hetero-Junction Composite and Gas Detection Performance in Asphalt Road

2020 ◽  
Vol 15 (4) ◽  
pp. 516-522
Author(s):  
Ruisheng Feng ◽  
Yuchao Xia
Keyword(s):  
Hydrothermal Method ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Hierarchical Structures ◽  
Gas Detection ◽  
Surface Accessibility ◽  
Sensing Properties ◽  
Asphalt Road ◽  
One Step ◽  
Nio Nanosheets

In this work, we have triumphantly synthesized porous nanosheet-assembled ZnO/NiO hierarchical microflower via a one-step hydrothermal method. On this basis, a corresponding gas sensor was fabricated to detect its sensitivity to H2S gas. The results indicated that porous flower-like hierarchical structures hold favorable superiority in the gas sensing towards H2S as compared to ZnO/NiO nanosheets. The superior sensing behavior may correlate with the special architecture offering abundant reaction sites, rapid channels and surface accessibility for gas transportation. Besides, p–n heterojunction at their interface and strong catalysis of NiO also play an important role in the enhancement of sensing properties.

One-step synthesis of hierarchical α-Ni(OH)2 flowerlike architectures and their gas sensing properties for NOx at room temperature

CrystEngComm ◽  
2012 ◽  
Vol 14 (20) ◽  
pp. 6843 ◽  
Author(s):  
Hongjie Wang ◽  
Jun Gao ◽  
Zhigang Li ◽  
Yunlong Ge ◽  
Kan Kan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
One Step

SYNTHESIS AND MANIPULATION OF WO3 NANO PARTICLES FOR GAS SENSING APPLICATIONS

2012 ◽  
Vol 05 ◽  
pp. 227-233
Author(s):  
Elham kamali Heidari ◽  
Seyed Reza Mahmoodi ◽  
Ehsan Marzbanrad ◽  
Babak Raisi ◽  
Cyrus Zmani
Keyword(s):  
Gas Sensing ◽  
Average Particle Size ◽  
High Sensitivity ◽  
Nano Particles ◽  
Average Particle ◽  
Monoclinic Structure ◽  
Template Removal ◽  
Sensing Applications ◽  
Low Concentrations ◽  
Nanocasting Route

Ultra fine WO 3 nanoparticles were synthesized by nanocasting route, using mesoporous SiO 2 as a template. BET measurements showed a specific surface area of 700m2/gr for synthesized SiO 2 while after impregnation and template removal, this area was reduced to 43m2/gr for WO 3 nanoparticles. HRTEM results showed single crystalline nanoparticles with average particle size of about 5nm possessing a monoclinic structure which is the favorite crystal structure for gas sensing applications. Alternative electric field was applied to align synthesized WO 3 nanoparticles between electrodes. Gas sensing measurements showed that this material has a high sensitivity to very low concentrations of NO 2 at 250°C.

Development of ordered metal nanoparticle arrangements on solid supports by combining a green nanoparticle synthetic method and polymer templating for sensing applications

RSC Advances ◽  
2016 ◽  
Vol 6 (65) ◽  
pp. 60502-60512 ◽  
Author(s):  
M. Blanco-Loimil ◽  
A. Pardo ◽  
E. Villar-Alvarez ◽  
R. Martínez-González ◽  
A. Topete ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
High Performance ◽  
Room Temperature ◽  
Metal Nanoparticle ◽  
Synthetic Method ◽  
Solid Supports ◽  
Ordered Arrays ◽  
Sensing Applications ◽  
Polymer Templating ◽  
One Step

One step, simple, robust and "green" methodology to fabricate high-density ordered arrays of uniform gold nanoparticles and gold nanoparticles clusters at room temperature over large areas which are suitable for high-performance SERS.

One-step synthesis of mesoporous Al2O3–In2O3nanofibres with remarkable gas-sensing performance to NOxat room temperature

2014 ◽  
Vol 2 (4) ◽  
pp. 949-956 ◽  
Author(s):  
Jun Gao ◽  
Linlin Wang ◽  
Kan Kan ◽  
Shuang Xu ◽  
Liqiang jing ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
One Step ◽  
Sensing Performance
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