Hierarchical flower-like Bi2SiO5/MWCNT nanocomposites for highly sensitive LPG sensor at room temperature

Aim and Objective: Ultrafine Ag/ZnO nanotetrapods (AZNTP) have been prepared successfully using silver (I)–bis (oxalato) zinc complex and 1, 3-diaminopropane (DAP) with a phase separation system, and have been injected into a diethyl/water solution. Materials and Methods: This crystal structure and lattice constant of the AZNTP obtained were investigated by means of a SEM, XRD, TEM and UV-vis spectrum. Results: The results of the present study demonstrated the growth and characterization AZNTP for humidity sensing and DAP plays a key role in the determination of particle morphology. AZNTP films with 23 nm in arm diameter have shown highly sensitive, quick response sensor material that works at room temperature.

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Highly sensitive and selective room-temperature NO2 gas sensor based on novel Fe2O3 nanorings/reduced graphene oxide heterojunction nanocomposites

Optik ◽

10.1016/j.ijleo.2021.166951 ◽

2021 ◽

pp. 166951

Author(s):

Xiaoshan Tang ◽

Canxin Tian ◽

Changwei Zou

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Gas Sensor ◽

Room Temperature ◽

No2 Gas Sensor ◽

Reduced Graphene ◽

Highly Sensitive

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

Sensors ◽

10.3390/s19183815 ◽

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.

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Investigation of sheet resistance variation with annealing temperature and development of highly sensitive and selective room temperature ammonia gas sensor using functionalized graphene oxide

Journal of Materials Science Materials in Electronics ◽

10.1007/s10854-020-04940-0 ◽

2021 ◽

Author(s):

Ravi Kumar ◽

Anil Kumar ◽

Rakesh Singh ◽

Rajesh Kashyap ◽

Dinesh Kumar ◽

...

Keyword(s):

Graphene Oxide ◽

Gas Sensor ◽

Sheet Resistance ◽

Room Temperature ◽

Annealing Temperature ◽

Functionalized Graphene ◽

Ammonia Gas ◽

Functionalized Graphene Oxide ◽

Resistance Variation ◽

Highly Sensitive

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Ultraviolet light-emitting diode-assisted highly sensitive room temperature NO2 gas sensor for low-temperature solution-processed ZnO/TiO2 nanorods decorated with plasmonic Au nanoparticles

Nanoscale ◽

10.1039/d1nr01001h ◽

2021 ◽

Author(s):

Soon-Hwan Kwon ◽

Tae-Hyeon Kim ◽

Sang-Min Kim ◽

Semi Oh ◽

Kyoung-Kook Kim

Keyword(s):

Gas Sensors ◽

High Performance ◽

Room Temperature ◽

Au Nanoparticles ◽

Light Emitting Diode ◽

Light Emitting ◽

No2 Gas Sensor ◽

Highly Sensitive ◽

Temperature Solution ◽

Semiconducting Metal Oxides

Nanostructured semiconducting metal oxides such as SnO2, ZnO, TiO2, and CuO have been widely used to fabricate high performance gas sensors. To improve the sensitivity and stability of gas sensors,...

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