scholarly journals A highly sensitive ppb-level H2S gas sensor based on fluorophenoxy-substituted phthalocyanine cobalt/rGO hybrids at room temperature

RSC Advances ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 5993-6001
Author(s):  
Bin Wang ◽  
Xiaolin Wang ◽  
ZhiJiang Guo ◽  
Shijie Gai ◽  
Yong Li ◽  
...  
Keyword(s):  
Environmental Pollution ◽  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Pollution Monitoring ◽  
Highly Sensitive ◽  
H2s Gas Sensor

Highly sensitive gas sensing materials are of great importance for environmental pollution monitoring.

scholarly journals A high-sensitive room temperature gas sensor based on cobalt phthalocyanines and reduced graphene oxide nanohybrids for the ppb-levels of ammonia detection

RSC Advances ◽  
2019 ◽  
Vol 9 (64) ◽  
pp. 37518-37525 ◽  
Author(s):  
ZhiJiang Guo ◽  
Bin Wang ◽  
Xiaolin Wang ◽  
Yong Li ◽  
Shijie Gai ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Environmental Pollution ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Pollution Monitoring ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Ammonia Detection

Highly sensitive gas sensing materials are of great importance for environmental pollution monitoring.

scholarly journals Gold and ZnO-Based Metal-Semiconductor Network for Highly Sensitive Room-Temperature Gas Sensing

Sensors ◽  
2019 ◽  
Vol 19 (18) ◽  
pp. 3815
Author(s):  
Renyun Zhang ◽  
Magnus Hummelgård ◽  
Joel Ljunggren ◽  
Håkan Olin
Keyword(s):  
Solar Cells ◽  
Gas Sensor ◽  
Network Structure ◽  
Room Temperature ◽  
Gas Sensing ◽  
Zno Nanowires ◽  
Gold Particles ◽  
Highly Sensitive ◽  
Semiconductor Electronics ◽  
New Type

Metal-semiconductor junctions and interfaces have been studied for many years due to their importance in applications such as semiconductor electronics and solar cells. However, semiconductor-metal networks are less studied because there is a lack of effective methods to fabricate such structures. Here, we report a novel Au–ZnO-based metal-semiconductor (M-S)n network in which ZnO nanowires were grown horizontally on gold particles and extended to reach the neighboring particles, forming an (M-S)n network. The (M-S)n network was further used as a gas sensor for sensing ethanol and acetone gases. The results show that the (M-S)n network is sensitive to ethanol (28.1 ppm) and acetone (22.3 ppm) gases and has the capacity to recognize the two gases based on differences in the saturation time. This study provides a method for producing a new type of metal-semiconductor network structure and demonstrates its application in gas sensing.

scholarly journals Zinc Phthalocyanine Thin Film-Based Optical Waveguide H2S Gas Sensor

2021 ◽  
Author(s):  
Kediliya Wumaier ◽  
Gulgina Mamtmin ◽  
Qingrong Ma ◽  
Asiya Maimaiti ◽  
Patima Nizamidin ◽  
...  
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Optical Waveguide ◽  
Gas Sensors ◽  
Room Temperature ◽  
Detection System ◽  
Cost Effective ◽  
Zinc Phthalocyanine ◽  
Highly Sensitive ◽  
H2s Gas Sensor

AbstractThe detection of hydrogen sulfide (H2S) is essential because of its toxicity and abundance in the environment. Hence, there is an urgent requisite to develop a highly sensitive and economical H2S detection system. Herein, a zinc phthalocyanine (ZnPc) thin film-based K+-exchanged optical waveguide (OWG) gas sensor was developed for H2S detection by using spin coating. The sensor showed excellent H2S sensing performance at room temperature with a wide linear range (0.1 ppm–500 ppm), reproducibility, stability, and a low detection limit of 0.1 ppm. The developed sensor showed a significant prospect in the development of cost-effective and highly sensitive H2S gas sensors.

A highly sensitive room temperature H2S gas sensor based on SnO2 multi-tube arrays bio-templated from insect bristles

2015 ◽  
Vol 44 (17) ◽  
pp. 7911-7916 ◽  
Author(s):  
Junlong Tian ◽  
Feng Pan ◽  
Ruiyang Xue ◽  
Wang Zhang ◽  
Xiaotian Fang ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Tin Oxide ◽  
Room Temperature ◽  
High Sensitivity ◽  
Highly Sensitive ◽  
Tube Arrays ◽  
H2s Gas Sensor ◽  
Parallel Effect

A tin oxide multi-tube array with a parallel effect was fabricated, which exhibited high sensitivity to H2S gas at room temperature.

scholarly journals A Novel Type Room Temperature Surface Photovoltage Gas Sensor Device

Sensors ◽  
2018 ◽  
Vol 18 (9) ◽  
pp. 2919 ◽  
Author(s):  
Monika Kwoka ◽  
Michal Borysiewicz ◽  
Pawel Tomkiewicz ◽  
Anna Piotrowska ◽  
Jacek Szuber
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Signal To Noise Ratio ◽  
Fast Response ◽  
Surface Photovoltage ◽  
Kelvin Probe ◽  
Sensor Device ◽  
Sensing Material ◽  
Highly Sensitive

In this paper a novel type of a highly sensitive gas sensor device based on the surface photovoltage effect is described. It is based on the Kelvin probe approach. Porous ZnO nanostructured thin films deposited by the direct current (DC) reactive magnetron sputtering method are used as the active gas sensing electrode material. Crucially, the obtained gas sensing material exhibited a nanocoral surface morphology and surface Zn to O non-stoichiometry with respect to its bulk mass. Among other responses, the demonstrated SPV gas sensor device exhibits a high response to an NO2 concentration as low as 1 ppm, with a signal to noise ratio of about 50 and a fast response time of several seconds under room temperature conditions.

scholarly journals Enhancing room-temperature NO2 gas sensing performance based on a metal phthalocyanine/graphene quantum dot hybrid material

RSC Advances ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 5618-5628
Author(s):  
Wenkai Jiang ◽  
Xinwei Chen ◽  
Tao Wang ◽  
Bolong Li ◽  
Min Zeng ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Gas Sensor ◽  
Hybrid Material ◽  
High Performance ◽  
Room Temperature ◽  
Gas Sensing ◽  
Metal Phthalocyanine ◽  
Graphene Quantum Dot ◽  
Sensing Performance

A high performance gas sensor based on a metal phthalocyanine/graphene quantum dot hybrid material was fabricated for NO2 detection at room-temperature.

scholarly journals A Novel Type Room Temperature Surface Photovoltage Gas Sensor Device 

2018 ◽  
Author(s):  
Monika Kwoka ◽  
Michal A. Borysiewicz ◽  
Pawel Tomkiewicz ◽  
Anna Piotrowska ◽  
Jacek Szuber
Keyword(s):  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Signal To Noise Ratio ◽  
High Sensitivity ◽  
Fast Response ◽  
Surface Photovoltage ◽  
Kelvin Probe ◽  
Sensor Device ◽  
Developed Surface

In this paper a novel type of a highly sensitive gas sensor device based on the surface photovoltage effect is described. The developed surface photovoltage gas sensor is based on a reverse Kelvin probe approach. As the active gas sensing electrode the porous ZnO nanostructured thin films are used deposited by the direct current (DC) reactive magnetron sputtering method exhibiting the nanocoral surface morphology combined with an evident surface nonstoichiometry related to the unintentional surface carbon and water vapor contaminations. Among others, the demonstrated SPV gas sensor device exhibits a high sensitivity of 1 ppm to NO2 with a signal to noise ratio of about 50 and a fast response time of several seconds under the room temperature conditions.

Highly sensitive thin film NH3 gas sensor operating at room temperature based on SnO2/MWCNTs composite

2008 ◽  
Vol 129 (2) ◽  
pp. 888-895 ◽  
Author(s):  
Nguyen Van Hieu ◽  
Luong Thi Bich Thuy ◽  
Nguyen Duc Chien
Keyword(s):  
Thin Film ◽  
Gas Sensor ◽  
Room Temperature ◽  
Highly Sensitive
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