Novel CO and CO2 Sensor Based on Nanostructured Dy2O3 Microspheres Synthesized by the Coprecipitation Method

2020 ◽  
pp. 95-116
Author(s):  
Carlos R. Michel ◽  
Alma H. Martínez-Preciado ◽  
Miguel A. Lopez-Alvarez ◽  
George P. Bernhardt ◽  
José A. Rivera-Mayorga
Keyword(s):  
Coprecipitation Method ◽  
Co2 Sensor

Effect of Temperature on Fe3O4 Magnetic Nanoparticles Prepared by Coprecipitation Method

2014 ◽  
Vol 900 ◽  
pp. 172-176 ◽  
Author(s):  
Ji Mei Niu ◽  
Zhi Gang Zheng
Keyword(s):  
Magnetic Nanoparticles ◽  
Coprecipitation Method ◽  
Effect Of Temperature ◽  
Vibrating Sample Magnetometer ◽  
X Ray Diffraction ◽  
X Ray ◽  
Magnetic Carriers ◽  
Average Grain Size ◽  
Or Gene ◽  
Block Temperature

The Fe3O4 magnetic nanoparticles obtained by the aqueous coprecipitation method are characterized systematically using scanning electron microscope, X-ray diffraction and vibrating sample magnetometer. These magnetic nanoparticles are spheric, dispersive, and have average grain size of 50 nm. The size and magnetic properties of Fe3O4 nanoparticles can be tuned by the reaction temperature. All samples exhibit high saturation magnetization (Ms=53.4 emu·g-1) and superparamagnetic behavior with a block temperature (TB) of 215K. These properties make such Fe3O4 magnetic nanoparticles worthy candidates for the magnetic carriers of targeted-drug or gene therapy in future.

scholarly journals Pressureless Sintering of YIG Ceramics from Coprecipitated Nanopowders

2021 ◽  
Vol 7 (5) ◽  
pp. 56
Author(s):  
Yimin Yang ◽  
Xiaoying Li ◽  
Ziyu Liu ◽  
Dianjun Hu ◽  
Xin Liu ◽  
...  
Keyword(s):  
High Temperature ◽  
Calcination Temperature ◽  
Sintering Temperature ◽  
Raw Materials ◽  
Secondary Phase ◽  
Coprecipitation Method ◽  
Pressureless Sintering ◽  
Densification Behavior ◽  
Sintering Process

Nanoparticles prepared by the coprecipitation method were used as raw materials to fabricate Y3Fe5O12 (YIG) ceramics by air pressureless sintering. The synthesized YIG precursor was calcinated at 900–1100 °C for 4 h in air. The influences of the calcination temperature on the phase and morphology of the nanopowders were investigated in detail. The powders calcined at 1000–1100 °C retained the pure YIG phase. YIG ceramics were fabricated by sintering at 1200–1400 °C for 10 h, and its densification behavior was studied. YIG ceramics prepared by air sintering at 1250 °C from powders calcinated at 1000 °C have the highest in-line transmittance in the range of 1000-3000 nm. When the sintering temperature exceeds 1300 °C, the secondary phase appears in the YIG ceramics, which may be due to the loss of oxygen during the high-temperature sintering process, resulting in the conversion of Fe3+ into Fe2+.

Synthesis of magnesium-based binary powders with high reactivity using a coprecipitation method

2021 ◽  
Vol 23 (4) ◽  
Author(s):  
Bong-Gu Kim ◽  
Hyun-Hee Choi ◽  
Jung-Hun Son ◽  
SeungCheol Yang ◽  
Yun-Ki Byeun ◽  
...  
Keyword(s):  
High Reactivity ◽  
Coprecipitation Method

A fast response atmospheric CO2 sensor for eddy correlation flux measurements

1978 ◽  
Vol 12 (4) ◽  
pp. 845-851 ◽  
Author(s):  
E.P Jones ◽  
T.V Ward ◽  
H.H Zwick
Keyword(s):  
Fast Response ◽  
Eddy Correlation ◽  
Atmospheric Co2 ◽  
Co2 Sensor ◽  
Flux Measurements

Modified magnetic properties of MnFe 2 O 4 by CTAB with coprecipitation method

2015 ◽  
Vol 149 ◽  
pp. 22-24 ◽  
Author(s):  
Yunong Zhang ◽  
Zhaodong Nan
Keyword(s):  
Magnetic Properties ◽  
Coprecipitation Method
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