Fast response time alcohol gas sensor using nanocrystalline F-doped SnO2 films derived via sol–gel method

SnO2 nanoparticle architectures were successfully synthesized using a sol-gel method and developed for acetone gas detection. The morphology and structure of the particles were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The SnO2 nanoparticle architectures were configured as high-performance sensors to detect acetone and showed a very fast response time (<1 s), a short recovery time (10 s), good repeatability and high selectivity at a relatively low working temperature. Thus, SnO2 nanoparticles should be promising candidates for designing and fabricating acetone gas sensors with good gas sensing performance. The possible gas sensing mechanism is also presented.

Download Full-text

Growth and characterization of β-Ga2O3 thin films by sol-gel method for fast-response solar-blind ultraviolet photodetectors

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2018.06.313 ◽

2018 ◽

Vol 766 ◽

pp. 601-608 ◽

Cited By ~ 26

Author(s):

Hao Shen ◽

Yinong Yin ◽

Kun Tian ◽

Karthikeyan Baskaran ◽

Libing Duan ◽

...

Keyword(s):

Thin Films ◽

Sol Gel ◽

Fast Response ◽

Gel Method ◽

Sol Gel Method ◽

Solar Blind ◽

Ultraviolet Photodetectors

Download Full-text

Fast response methane sensor using nanocrystalline zinc oxide thin films derived by sol–gel method

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2006.11.046 ◽

2007 ◽

Vol 124 (1) ◽

pp. 62-67 ◽

Cited By ~ 125

Author(s):

P. Bhattacharyya ◽

P.K. Basu ◽

H. Saha ◽

S. Basu

Keyword(s):

Thin Films ◽

Zinc Oxide ◽

Sol Gel ◽

Fast Response ◽

Oxide Thin Films ◽

Methane Sensor ◽

Gel Method ◽

Sol Gel Method ◽

Nanocrystalline Zinc Oxide

Download Full-text

CO Sensing Properties of La1-xCaxFeO3 Perovskite Nanocrystalline Materials

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.495.323 ◽

2011 ◽

Vol 495 ◽

pp. 323-326 ◽

Cited By ~ 1

Author(s):

Ming Zhao ◽

Li Hui Sun ◽

Ji Fan Hu ◽

Hong Wei Qin

Keyword(s):

Response Time ◽

Nanocrystalline Materials ◽

Recovery Time ◽

Operating Temperature ◽

Sol Gel ◽

Nanocrystalline Powders ◽

Orthorhombic Structure ◽

Gel Method ◽

Sensing Properties ◽

Sol Gel Method

The La1-xCaxFeO3 nanocrystalline powders were prepared by sol-gel method. These powders crystallized as perovskite orthorhombic structure. With an increase of Ca content, the resistance of La1-xCaxFeO3 sensors in air decreases at first, undergoes a minimum at x=0.3, and then increases again. La1-xCaxFeO3-based sensors show sensitive responses to CO. Among those La1-xCaxFeO3-based sensors, the sensor with x=0.2 shows the highest response to 200 ppm CO at operating temperatures below 325°C. The highest response S=(RCO-Rair)/RCO for the La0.8Ca0.2FeO3 based sensor to 200 ppm CO is 87% with response time 15 s and recovery time 60 s at an operating temperature of 100°C.

Download Full-text

Highly active and porous single-crystal In2O3 nanosheet for NOx gas sensor with excellent response at room temperature

RSC Advances ◽

10.1039/c7ra05446g ◽

2017 ◽

Vol 7 (53) ◽

pp. 33419-33425 ◽

Cited By ~ 16

Author(s):

Li Sun ◽

Wencheng Fang ◽

Ying Yang ◽

Hui Yu ◽

Tingting Wang ◽

...

Keyword(s):

Detection Limit ◽

Response Time ◽

Single Crystal ◽

Gas Sensor ◽

Room Temperature ◽

Fast Response ◽

Fast Response Time ◽

Excellent Response ◽

Highly Active ◽

Nox Gas Sensor

Porous single-crystal In2O3 nanosheet was well-designed and prepared through calcination after liquid reflux, then exhibited a distinguished response, fast response time to NOx with good selectivity and low detection limit at room temperature.

Download Full-text

Super-fast response humidity sensor based on La0.7Sr0.3MnO3 nanocrystals prepared by PVP-assisted sol-gel method

Sensors and Actuators B Chemical ◽

10.1016/j.snb.2017.11.169 ◽

2018 ◽

Vol 258 ◽

pp. 527-534 ◽

Cited By ~ 22

Author(s):

Zaihua Duan ◽

Min Xu ◽

Tingshuai Li ◽

Yong Zhang ◽

Hefeng Zou

Keyword(s):

Humidity Sensor ◽

Sol Gel ◽

Fast Response ◽

Gel Method ◽

Sol Gel Method

Download Full-text

Relationship between Gas Sensitivity and Film Structure of SnO2Thin Film Gas Sensor by Sol-Gel Method

Chemistry Letters ◽

10.1246/cl.1994.2035 ◽

1994 ◽

Vol 23 (11) ◽

pp. 2035-2038 ◽

Cited By ~ 6

Author(s):

Masaaki Kanamori ◽

Mitsuhiro Takeuchi ◽

Yutaka Ohya ◽

Yasutaka Takahashi

Keyword(s):

Gas Sensor ◽

Sol Gel ◽

Film Structure ◽

Gas Sensitivity ◽

Gel Method ◽

Sol Gel Method

Download Full-text

A highly sensitive gas sensor based on CuO nanoparticles synthetized via a sol–gel method

RSC Advances ◽

10.1039/c6ra13876d ◽

2016 ◽

Vol 6 (83) ◽

pp. 79343-79349 ◽

Cited By ~ 71

Author(s):

Fang Wang ◽

Hairong Li ◽

Zhaoxin Yuan ◽

Yongzhe Sun ◽

Fangzhi Chang ◽

...

Keyword(s):

Gas Sensor ◽

Sol Gel ◽

Cuo Nanoparticles ◽

Gel Method ◽

Sol Gel Method ◽

Highly Sensitive

In this paper, CuO nanoparticles were synthetized via a sol–gel method and their corresponding gas sensor was achieved simultaneously.

Download Full-text

Structural and Morphological Analysis of Nanocomposite SnO2-Graphene Synthesized by Sol-Gel Method

Materials Science Forum ◽

10.4028/www.scientific.net/msf.887.32 ◽

2017 ◽

Vol 887 ◽

pp. 32-40 ◽

Cited By ~ 1

Author(s):

Aminuddin Debataraja ◽

Brian Yuliarto ◽

Nugraha ◽

Bambang Sunendar ◽

Hiskia

Keyword(s):

Crystal Structure ◽

Gas Sensor ◽

Morphological Analysis ◽

Sol Gel ◽

Hexagonal Structure ◽

Gel Method ◽

Sol Gel Method ◽

Sensor Performance ◽

Sensing Material ◽

Potential Applicability

Gas sensor performance is strongly influenced by the crystal structure, composition and morphology of the material used. In this paper, structural and morphological analysis of nanocomposite SnO2-Graphene synthesized by Sol-Gel method with the composition of 1:1, 1:2, 1:3 will be described. Analysis of the morphology and structure of nanocomposite SnO2-Graphene is investigated using XRD, SEM and TEM with the purpose of obtaining the crystal structure, morphology, composition and size of the resulting particles. The XRD results showed that the formation of the crystalline phase can be recorded at 2θ = 26.64; 34.2; 51.92, where the results of SEM show that the nanomaterial SnO2 has tetragonal structure while the graphene has hexagonal structure. The nanocomposite SnO2-Graphene has nanorod pattern. Furthermore, the surface analysis using TEM of nanocomposite SnO2-Graphene shows that the surface has the rod diameter in the range of 5-8 nm. The unique nanopattern of SnO2-Graphene will have potential applicability as the sensing material for CO gas sensor.

Download Full-text