The enhanced CO gas sensing performance of Pd/SnO2 hollow sphere sensors under hydrothermal conditions

RSC Advances ◽  
2016 ◽  
Vol 6 (84) ◽  
pp. 80455-80461 ◽  
Author(s):  
Qingji Wang ◽  
Xu Li ◽  
Fangmeng Liu ◽  
Chang Liu ◽  
Tan Su ◽  
...  
Keyword(s):  
Hollow Sphere ◽  
Gas Sensing ◽  
Hollow Spheres ◽  
Hydrothermal Conditions ◽  
Hydrothermal Route ◽  
One Step ◽  
Sensing Performance ◽  
Co Gas

Pd-doped SnO2 hollow spheres were synthesized via a facile one-step hydrothermal route.

Influence of nanoparticle size on ethanol gas sensing performance of mesoporous α-Fe2O3 hollow spheres

2017 ◽  
Vol 224 ◽  
pp. 158-162 ◽  
Author(s):  
Changqing Jin ◽  
Chenghai Ge ◽  
Gang Xu ◽  
George Peterson ◽  
Zengyun Jian ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Hollow Spheres ◽  
Nanoparticle Size ◽  
Sensing Performance

Effective decoration of Pd nanoparticles on the surface of SnO2 nanowires for enhancement of CO gas-sensing performance

2014 ◽  
Vol 265 ◽  
pp. 124-132 ◽  
Author(s):  
Do Dang Trung ◽  
Nguyen Duc Hoa ◽  
Pham Van Tong ◽  
Nguyen Van Duy ◽  
T.D. Dao ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Pd Nanoparticles ◽  
Sno2 Nanowires ◽  
Sensing Performance ◽  
Co Gas

One-step synthesis of mesoporous Al2O3–In2O3nanofibres with remarkable gas-sensing performance to NOxat room temperature

2014 ◽  
Vol 2 (4) ◽  
pp. 949-956 ◽  
Author(s):  
Jun Gao ◽  
Linlin Wang ◽  
Kan Kan ◽  
Shuang Xu ◽  
Liqiang jing ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
One Step ◽  
Sensing Performance

scholarly journals Formaldehyde Sensing by Co3O4 Hollow Spheres at Room Temperature

2020 ◽  
Author(s):  
Yang Cao ◽  
Yongguang Tu ◽  
Jingyu Qian ◽  
Yong Yang
Keyword(s):  
Hollow Sphere ◽  
Trace Amount ◽  
Room Temperature ◽  
Hollow Spheres ◽  
Experimental Results ◽  
Potential Utility ◽  
High Toxicity ◽  
Formaldehyde Sensing ◽  
And Diffusion ◽  
Sensing Performance

: Formaldehyde is a ubiquitous and high toxicity gas. It is an essential task to efficient detect owing to their toxicity and diffusion. In this work, we studied on the detection of trace amount of formaldehyde based on hollow Co<sub>3</sub>O<sub>4</sub> nanostructure. It is found that Co<sub>3</sub>O<sub>4</sub> hollow spheres with different structures shows distinct sensing performance towards formaldehyde at room temperature, the response value of nanosheet modified Co<sub>3</sub>O<sub>4</sub> towards 100 ppm formaldehyde will reach 35 in 18 second, and the nanoparticle modified Co<sub>3</sub>O<sub>4</sub> hollow sphere will reach 2.1 in 18 second, 17 in 300 second. The nanosheet modified and nanoparticle modified Co<sub>3</sub>O<sub>4</sub> hollow sphere will reach 4 and 20 in 10 second towards 100 ppm formaldehyde at room temperature. As room temperature, the sensors do not response towards NH<sub>3</sub>, CO, etc. The sensing mechanism was proposed based on the theoretical and experimental results. The Co<sub>3</sub>O<sub>4</sub> sensor shows that potential utility in CH<sub>2</sub>O quick sensing at room temperature

scholarly journals Investigation of EDTA concentration on the size of carbonated flowerlike hydroxyapatite microspheres

2021 ◽  
Vol 8 (3) ◽  
Author(s):  
Shengkun Yao ◽  
Mei-li Qi ◽  
Liang Qi ◽  
Yongling Ding ◽  
Min Chen ◽  
...  
Keyword(s):  
Particle Size ◽  
Underlying Mechanism ◽  
Particle Size Analysis ◽  
Size Analysis ◽  
X Ray Diffraction ◽  
Hydrothermal Conditions ◽  
Hydrothermal Route ◽  
Infrared Spectrometer ◽  
One Step ◽  
Edta Concentration

Ethylenediamine tetraacetic acid (EDTA) is considered an effective crystal growth modifier for template-assisted hydrothermal synthesis of hydroxyapatite (HA) materials. In this work, flowerlike-carbonated HA (CHA) microspheres were synthesized using EDTA via a one-step hydrothermal route. The phase, functional groups, morphology and particle size distribution of the products were examined by X-ray diffraction, Fourier transform infrared spectrometer, field emission scanning electron microscopy as well as laser diffraction particle size analysis. Results show that the morphology of the products can be well controlled by adjusting the EDTA concentration. With an increase of the EDTA concentration, the particle size of flowerlike microspheres decreased from tens of microns down to a few microns. The underlying mechanism for the morphological transition of CHA microspheres with different concentrations of EDTA under hydrothermal conditions is proposed. This work provides a simple way to controllably fabricate CHA microspheres with various sizes using the same synthesis system for biomedical applications, such as cell carriers and drug delivery.

One-step synthesis of ZnWO4/ZnSnO3 composite and the enhanced gas sensing performance to formaldehyde

2020 ◽  
Vol 277 ◽  
pp. 128327
Author(s):  
Weiwei Guo ◽  
Bangyu Zhao ◽  
Lingli Huang ◽  
Youzhou He
Keyword(s):  
Gas Sensing ◽  
One Step ◽  
Sensing Performance
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