Room-Temperature No 2 Sensor Based on a Hybrid Nanomaterial of Methylammonium Tin Iodide Submicron Spheres and Tin Dioxide Nanowires

2020 ◽  
Author(s):  
Vu Xuan Hien ◽  
Phung Dinh Hoat ◽  
Pham Tien Hung ◽  
Sangwook Lee ◽  
Joon-Hyung Lee ◽  
...  
Keyword(s):  
Room Temperature ◽  
Tin Dioxide ◽  
Hybrid Nanomaterial ◽  
Tin Iodide

Room-temperature NO2 sensor based on a hybrid nanomaterial of methylammonium tin iodide submicron spheres and tin dioxide nanowires

2020 ◽  
Vol 188 ◽  
pp. 107-111 ◽  
Author(s):  
Vu Xuan Hien ◽  
Phung Dinh Hoat ◽  
Pham Tien Hung ◽  
Sangwook Lee ◽  
Joon-Hyung Lee ◽  
...  
Keyword(s):  
Room Temperature ◽  
Tin Dioxide ◽  
Hybrid Nanomaterial ◽  
No2 Sensor ◽  
Tin Iodide

scholarly journals Preparation and Gas Sensing Properties of PANI/SnO2 Hybrid Material

Polymers ◽  
2021 ◽  
Vol 13 (9) ◽  
pp. 1360
Author(s):  
Qiaohua Feng ◽  
Huanhuan Zhang ◽  
Yunbo Shi ◽  
Xiaoyu Yu ◽  
Guangdong Lan
Keyword(s):  
Hybrid Material ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Gas Adsorption ◽  
Gas Sensing ◽  
Oxidative Polymerization ◽  
Environmental Pollutants ◽  
Decomposition Temperature ◽  
Benzene Vapor ◽  
Thermo Gravimetric Analyzer

A sensor operating at room temperature has low power consumption and is beneficial for the detection of environmental pollutants such as ammonia and benzene vapor. In this study, polyaniline (PANI) is made from aniline under acidic conditions by chemical oxidative polymerization and doped with tin dioxide (SnO2) at a specific percentage. The PANI/SnO2 hybrid material obtained is then ground at room temperature. The results of scanning electron microscopy show that the prepared powder comprises nanoscale particles and has good dispersibility, which is conducive to gas adsorption. The thermal decomposition temperature of the powder and its stability are measured using a differential thermo gravimetric analyzer. At 20 °C, the ammonia gas and benzene vapor gas sensing of the PANI/SnO2 hybrid material was tested at concentrations of between 1 and 7 ppm of ammonia and between 0.4 and 90 ppm of benzene vapor. The tests show that the response sensitivities to ammonia and benzene vapor are essentially linear. The sensing mechanisms of the PANI/SnO2 hybrid material to ammonia and benzene vapors were analyzed. The results demonstrate that doped SnO2 significantly affects the sensitivity, response time, and recovery time of the PANI material.

scholarly journals Poole-Frenkel Conduction in Cu/Nano-SnO2/Cu Arrangement

2011 ◽  
Vol 2011 ◽  
pp. 1-4 ◽  
Author(s):  
Hossein Mahmoudi Chenari ◽  
Hassan Sedghi ◽  
Mohammad Talebian ◽  
Mir Maqsoud Golzan ◽  
Ali Hassanzadeh
Keyword(s):  
Electrical Properties ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Current Flow ◽  
Sandwich Structures ◽  
Conduction Band Edge ◽  
Flow Mechanism ◽  
Conduction Mechanisms ◽  
Current Voltage ◽  
Limited Conduction

It is well known that metal/Tin-dioxide/metal sandwich structures exhibit a field-assisted lowering of the potential barrier between donor-like center and the conduction band edge, known as the Poole-Frenkel effect. This behavior is indicated by a linear dependence of Iog  on , where is the current density, and is the applied voltage. In this study, the electrical properties of Cu/nano-SnO2/Cu sandwich structures were investigated through current-voltage measurements at room temperature. Also, an attempt to explore the governing current flow mechanism was tried. Our results indicate that noticeable feature appearing clearly in the current-voltage characterization is the Poole-Frenkel and space-charge-limited conduction mechanisms.

Ultra-sensitive hydrogen gas sensors based on Pd-decorated tin dioxide nanostructures: Room temperature operating sensors

2010 ◽  
Vol 35 (22) ◽  
pp. 12568-12573 ◽  
Author(s):  
Jun Min Lee ◽  
Ji-eun Park ◽  
Seri Kim ◽  
Sol Kim ◽  
Eunyoung Lee ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Hydrogen Gas ◽  
Hydrogen Gas Sensors ◽  
Temperature Operating

Decoration of vertical graphene with tin dioxide nanoparticles for highly sensitive room temperature formaldehyde sensing

2018 ◽  
Vol 256 ◽  
pp. 1011-1020 ◽  
Author(s):  
Zheng Bo ◽  
Mu Yuan ◽  
Shun Mao ◽  
Xia Chen ◽  
Jianhua Yan ◽  
...  
Keyword(s):  
Room Temperature ◽  
Tin Dioxide ◽  
Highly Sensitive ◽  
Formaldehyde Sensing

BENZENE GAS SENSOR BASED ON SCREEN-PRINTED PZT CANTILEVERS

2011 ◽  
Vol 2011 (CICMT) ◽  
pp. 000111-000116
Author(s):  
Hélène Debéda ◽  
Rosa M. Vázquez ◽  
Riadh Lakhmi ◽  
Francisco J. Arregui ◽  
Claude Lucat ◽  
...  
Keyword(s):  
Screen Printing ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Sacrificial Layer ◽  
Longitudinal Vibration ◽  
Longitudinal Mode ◽  
High Sensitivity ◽  
Layer Technique ◽  
Longitudinal Vibration Mode ◽  
Ppm Level

Benzene gas detections at ppm level are performed at room temperature with a piezoelectric resonant type sensor. For this purpose, self-actuated PZT cantilevers made of multi-layered Au/PZT/Au beam (8×2×0.1 mm3) partially released from an alumina substrate, are fabricated thanks to the association of screen-printing and sacrificial layer technique. Then, PZT cantilevers are functionalized with different organic (polypyrrole and polyaniline) and inorganic (active carbon and tin dioxide) coatings. The high sensitivity (tens of hertz/ppm) is achieved by using the unusual 31's longitudinal vibration mode of the PZT cantilever, unlike classical modes like transversal bending resonating mode. With the second “in-plane” 31-longitudinal mode of the PZT beam, benzene detection at sub-ppm level is expected with the organic and inorganic sensitive coatings. These very interesting results already demonstrate the potentialities of coated PZT cantilevers for gas detection and can be extended to species detection in liquid media.

Influence of Light on the Gas Sensitivity of the Thin Films of Tin Dioxide to Ethanol Vapors at Room Temperature

2017 ◽  
Vol 19 (1) ◽  
pp. 34-40
Author(s):  
V.V. Simakov ◽  
◽  
I.V. Sinev ◽  
A.V. Smirnov ◽  
I.D. Osyko ◽  
...  
Keyword(s):  
Thin Films ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Gas Sensitivity

Room-temperature high-performance acetone gas sensor based on hydrothermal synthesized SnO2-reduced graphene oxide hybrid composite

RSC Advances ◽  
2015 ◽  
Vol 5 (4) ◽  
pp. 3016-3022 ◽  
Author(s):  
Dongzhi Zhang ◽  
Aiming Liu ◽  
Hongyan Chang ◽  
Bokai Xia
Keyword(s):  
Graphene Oxide ◽  
Composite Film ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Hybrid Composite ◽  
High Performance ◽  
Room Temperature ◽  
Tin Dioxide ◽  
Reduced Graphene

In this paper, we demonstrated a room-temperature acetone gas sensor based on a tin dioxide (SnO2)-reduced graphene oxide (RGO) hybrid composite film.

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