Synthesis and characterization of In-doped LaFeO3 hollow nanofibers with enhanced formaldehyde sensing properties

2019 ◽  
Vol 236 ◽  
pp. 229-232 ◽  
Author(s):  
G.H. Zhang ◽  
Q. Chen ◽  
X.Y. Deng ◽  
H.Y. Jiao ◽  
P.Y. Wang ◽  
...  
2014 ◽  
Vol 131 ◽  
pp. 23-26 ◽  
Author(s):  
L. Cheng ◽  
S.Y. Ma ◽  
T.T. Wang ◽  
X.B. Li ◽  
J. Luo ◽  
...  

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Chutima Thiabdokmai ◽  
Apishok Tangtrakarn ◽  
Shatchai Promsuy ◽  
Pilan Ngiewlay ◽  
Charusporn Mongkolkachit

The hollow nanofibers of Ce0.8Gd0.2O2−δ(GDC20) were electrospun from the PVP and nitrate precursors. The evolution of hollow channel was investigated by TG-DTA and ex situ TEM for the fibers heated at 250–300°C for 1–5 h. The hollow cores were revealed during the crystallization of nano-GDC20 and the PVP decomposition stage. The structural and morphological properties of GDC20 fibers before and after being calcined at 500–900°C for 8 h were investigated by FTIR, FE-SEM, TEM, EDS, XRD, and Raman spectroscopy. The results from XRD and Raman scattering verify the successful doping of Gd3+ions into the CeO2host lattice. The conductivity of the cold-pressed GDC 20 pellet sintered at 1400°C is more than 0.01 S/cm at and above 600°C.


2010 ◽  
Vol 21 (28) ◽  
pp. 285701 ◽  
Author(s):  
Lina Liu ◽  
Bin Li ◽  
Ruifei Qin ◽  
Haifeng Zhao ◽  
Xinguang Ren ◽  
...  

2014 ◽  
Vol 941-944 ◽  
pp. 479-482
Author(s):  
Chang Bai Liu ◽  
Xing Yi Liu

Hollow nanofiber In2O3 is synthesized by electrospinning. The as-synthesized materials are characterized by scanning electron microscope (SEM) and X-ray power diffraction (XRD). The formaldehyde sensing properties of the devices using In2O3 films are investigated at different operating temperatures. The results reveal that the response of hollow nanofiber In2O3 sensor is about 2.5 to 1 ppm formaldehyde at the optimum operating temperature of 270°C. The response and recovery time is about 3 s and 19 s, respectively. Moreover, sensor possesses a good selectivity to some common gas.


2015 ◽  
Vol 31 (4) ◽  
pp. 800-806 ◽  
Author(s):  
DU Hai-Ying ◽  
◽  
WANG Jing ◽  
QIAO Qiao ◽  
SUN Yan-Hui ◽  
...  

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