Highly sensitive room-temperature CO gas sensors: Pt and Pd nanoparticle-decorated In2O3 flower-like nanobundles

2012 ◽  
Vol 22 (26) ◽  
pp. 13204 ◽  
Author(s):  
Hsiang-Yu Lai ◽  
Chun-Hua Chen
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Pd Nanoparticle ◽  
Highly Sensitive ◽  
Co Gas

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 ◽  
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,...

Highly sensitive NO2 gas sensors based on hexagonal SnS2 nanoplates operating at room temperature

2019 ◽  
Vol 31 (7) ◽  
pp. 075501 ◽  
Author(s):  
Zhi Yang ◽  
Chen Su ◽  
Shutang Wang ◽  
Yutong Han ◽  
Xinwei Chen ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Highly Sensitive ◽  
No2 Gas Sensors

scholarly journals Highly Sensitive InOxOzone Sensing Films on Flexible Substrates

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
G. Kiriakidis ◽  
K. Moschovis ◽  
I. Kortidis ◽  
R. Skarvelakis
Keyword(s):  
Thin Films ◽  
Gas Sensors ◽  
Air Conditioning ◽  
Room Temperature ◽  
Growth Conditions ◽  
Flexible Substrates ◽  
Dc Magnetron Sputtering ◽  
Surface Cracking ◽  
Highly Sensitive ◽  
Extended Surface

InOxthin films with a thickness of the order of 100 nm were grown by dc magnetron sputtering on glass, Si and flexible (PET) substrates. The electrical conductivity ofInOxthin films exhibited a change of two orders of magnitude during photoreduction with ultraviolet light and subsequent oxidation in ozone concentrations from 2370 to 15 ppb, at room temperature. Optical transparency of over 85% for all substrates was maintained. Film structural and ozone sensing properties were analyzed. Surface morphology investigations carried out by SEM for films on PET substrates showed extended surface cracking for bending angles beyond40∘. Optimization of growth conditions has led to films with extremely low detection levels for ozone down to 15 ppb at room temperature, demonstrating the wide prospective of utilizing these metal oxides as gas sensors on flexible substrates for a variety of automotive and air-conditioning applications.

scholarly journals MoS2Nanosheet-Pd Nanoparticle Composite for Highly Sensitive Room Temperature Detection of Hydrogen

2015 ◽  
Vol 2 (4) ◽  
pp. 1500004 ◽  
Author(s):  
Cihan Kuru ◽  
Chulmin Choi ◽  
Alireza Kargar ◽  
Duyoung Choi ◽  
Young Jin Kim ◽  
...  
Keyword(s):  
Room Temperature ◽  
Pd Nanoparticle ◽  
Temperature Detection ◽  
Highly Sensitive

Heterostructured Co3O4/PEI–CNTs composite: fabrication, characterization and CO gas sensors at room temperature

2014 ◽  
Vol 2 (13) ◽  
pp. 4558-4565 ◽  
Author(s):  
Lifang Dang ◽  
Guo Zhang ◽  
Kan Kan ◽  
Yufei Lin ◽  
Fuquan Bai ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Sensing Properties ◽  
Composite Fabrication ◽  
Chemical Approach ◽  
Co Detection ◽  
Composite Sensor ◽  
Co Gas

A noncovalent chemical approach is developed for hybridizing PEI–CNTs with Co3O4 nanoparticles. The Co3O4/PEI–CNTs composite sensor exhibits excellent sensing properties at room temperature to CO detection.

scholarly journals ppb-Level Selective Hydrogen Gas Detection of Pd-Functionalized In2O3-Loaded ZnO Nanofiber Gas Sensors

Sensors ◽  
2019 ◽  
Vol 19 (19) ◽  
pp. 4276 ◽  
Author(s):  
Jae-Hyoung Lee ◽  
Jae-Hun Kim ◽  
Jin-Young Kim ◽  
Ali Mirzaei ◽  
Hyoun Woo Kim ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Gas Sensing ◽  
Hydrogen Gas ◽  
Strong Response ◽  
Pd Nanoparticle ◽  
Highly Sensitive ◽  
Hydrogen Gas Sensors ◽  
Zno Nanofibers ◽  
Gas Response ◽  
Hydrogen Gas Detection

Pd nanoparticle-functionalized, xIn2O3 (x = 0.05, 0.1, and 0.15)-loaded ZnO nanofibers were synthesized by an electrospinning and ultraviolet (UV) irradiation method and assessed for their hydrogen gas sensing properties. Morphological and chemical analyses revealed the desired morphology and chemical composition of the synthesized nanofibers. The optimal gas sensor namely Pd-functionalized, 0.1In2O3-loaded ZnO nanofibers showed a very strong response to 172–50 ppb hydrogen gas at 350 °C, which is regarded as the optimal sensing temperature. Furthermore, the gas sensors showed excellent selectivity to hydrogen gas due to the much lower response to CO and NO2 gases. The enhanced gas response was attributed to the excellent catalytic activity of Pd to hydrogen gas, and the formation of Pd/ZnO and In2O3/ZnO heterojunctions, ZnO–ZnO homojunction, as well as the formation of PdHx. Overall, highly sensitive and selective hydrogen gas sensors can be produced based on a simple methodology using a synergistic effect from Pd functionalization and In2O3 loading in ZnO nanofibers.

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