Fabrication,characterization,and electrical conductivity properties of Pr6O11 nanoparticles
来源期刊：Journal of Rare Earths2013年第7期
论文作者：Bahaa M.Abu-Zied Youssef A.Mohamed Abdullah M.Asiri
文章页码：701 - 708
摘 要：Pr6O11 nanoparticles were obtained by subsequent thermal decomposition of the as-prepared precipitate formed under ambient temperature and pressure using NaOH as precipitant.The calcination process was affected,for 1 h in static air atmosphere,at 400-700 °C temperature range.The different samples were characterized using X-ray diffraction（XRD）,transmission electron microscopy（TEM）,field emission scanning electron microscopy（FE-SEM）,thermogravimetric analysis（TGA）,in situ electrical conductivity,and N 2 adsorption/desorption.The obtained results demonstrated that nano-crystalline Pr6O11,with crystallites size of 6-12 nm,started to form at 500 °C.Such value increased to 20-33 nm for the sample calcined at 700 °C.The as-synthesized Pr6O11 nanoparticles presented high electrical conductivity due to electron hopping between Pr（III）-Pr（IV） pairs.
Bahaa M.Abu-Zied1,2,3，Youssef A.Mohamed2，Abdullah M.Asiri1,3
1. Chemistry Department,Faculty of Science,King Abdulaziz University,P.O.Box 80203,Jeddah 21589,Saudi Arabia2. Chemistry Department,Faculty of Science,Assiut University,71516 Assiut,Egypt3. Center of Excellence for Advanced Materials Research(CEAMR),King Abdulaziz University,P.O.Box 80203,Jeddah 21589,Saudi Arabia
摘 要：Pr6O11 nanoparticles were obtained by subsequent thermal decomposition of the as-prepared precipitate formed under ambient temperature and pressure using NaOH as precipitant.The calcination process was affected,for 1 h in static air atmosphere,at 400-700 °C temperature range.The different samples were characterized using X-ray diffraction（XRD）,transmission electron microscopy（TEM）,field emission scanning electron microscopy（FE-SEM）,thermogravimetric analysis（TGA）,in situ electrical conductivity,and N 2 adsorption/desorption.The obtained results demonstrated that nano-crystalline Pr6O11,with crystallites size of 6-12 nm,started to form at 500 °C.Such value increased to 20-33 nm for the sample calcined at 700 °C.The as-synthesized Pr6O11 nanoparticles presented high electrical conductivity due to electron hopping between Pr（III）-Pr（IV） pairs.
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