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RISS 인기검색어
- 검색키워드
- 저자 : Tran Thi Minh Nguyet (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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The Role of Zn Doping on the Catalytic Activity of the Nanoparticle Perovskite La0.7Sr0.3MnO3
Tran Thi Minh Nguyet,Nguyen Quang Huan,Tran Que Chi,Do The Chan,Nguyen Doan Thai,Nguyen Cong Trang,Luu Tien Hung,Le Van Tiep,Nguyen Van Qui 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5
The nanometer complex oxide La0:7Sr0.3Mn0.6Zn0.₄O₃ was prepared by using a Sol-Gel method with citric acid as a ligand. The in uence of Zn doping of La0.7Sr0.₃MnO₃ on the structure, the morphology, the surface properties and on the catalytic activity of material was studied by using X-ray diraction (XRD), transmission electron microscopy (TEM), a high-resolution images and selected area electron diraction (SAED), physical adsorption and temperature programmed surface reaction (TPSR) methods. The results showed that perovskite La0:7Sr0:3Mn0:6. Zn0.₄O₃ could well catalyse propene oxidation in the temperature range 190 { 280 ℃, which was reduced to 100 { 120 ℃ for catalyst La1-χSrχMnO₃ The nanometer complex oxide La0:7Sr0.3Mn0.6Zn0.₄O₃ was prepared by using a Sol-Gel method with citric acid as a ligand. The in uence of Zn doping of La0.7Sr0.₃MnO₃ on the structure, the morphology, the surface properties and on the catalytic activity of material was studied by using X-ray diraction (XRD), transmission electron microscopy (TEM), a high-resolution images and selected area electron diraction (SAED), physical adsorption and temperature programmed surface reaction (TPSR) methods. The results showed that perovskite La0:7Sr0:3Mn0:6. Zn0.₄O₃ could well catalyse propene oxidation in the temperature range 190 { 280 ℃, which was reduced to 100 { 120 ℃ for catalyst La1-χSrχMnO₃
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Tran Thi Minh Nguyet,Nguyen Cong Trang,Nguyen Quang Huan,Nguyen Xuan,Luu Tien Hung,Masakazu Date 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.52 No.5
Au=Fe₂O₃(Au : Fe = 1 : 50) catalyst was prepared by the co-precipitation method. The co- precipitate was studied by using dierential thermal analysis (DTA) and dierential thermal gravi- metric analysis (DTGA). The structure of the sample was investigated by using X-ray diraction (XRD) and transmission electron microscopy (TEM) and high-resolution transmission electron mi- croscopy (HRTEM). The particle size was determined to be within the range of 1.5 and 8 nm. Results of the study for catalytic properties showed that T1=2 for CO and H2 oxidation were 317 and 405 K respectively. Au=Fe₂O₃(Au : Fe = 1 : 50) catalyst was prepared by the co-precipitation method. The co-precipitate was studied by using DTA and DTGA. The structure of the sample was investigated by XRD, TEM and HRTEM. The particle size was determined to be within the range of 1.5 and 8 nm. Results of the study for catalytic properties showed that T1=2 for CO and H2 oxidation were 317 and 405 K respectively. Au=Fe₂O₃(Au : Fe = 1 : 50) catalyst was prepared by the co-precipitation method. The co- precipitate was studied by using dierential thermal analysis (DTA) and dierential thermal gravi- metric analysis (DTGA). The structure of the sample was investigated by using X-ray diraction (XRD) and transmission electron microscopy (TEM) and high-resolution transmission electron mi- croscopy (HRTEM). The particle size was determined to be within the range of 1.5 and 8 nm. Results of the study for catalytic properties showed that T1=2 for CO and H2 oxidation were 317 and 405 K respectively. Au=Fe₂O₃(Au : Fe = 1 : 50) catalyst was prepared by the co-precipitation method. The co-precipitate was studied by using DTA and DTGA. The structure of the sample was investigated by XRD, TEM and HRTEM. The particle size was determined to be within the range of 1.5 and 8 nm. Results of the study for catalytic properties showed that T1=2 for CO and H2 oxidation were 317 and 405 K respectively.
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Nguyen Thi Minh Nguyet,Le Van Thang,Nguyen Huu HuyPhuc,Vinh-Dat Vuong,Tran Van Khai,Mai Thanh Phong 한양대학교 세라믹연구소 2019 Journal of Ceramic Processing Research Vol.20 No.2
MoS2 nanosheets (NS) were directly grown on carbon nanofiber (CF) and employed as electrocatalyst for hydrogen evolutionreaction (HER). The structural, surface morphology and chemical composition of the nanocomposites were characterized byfield emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), energydispersiveX-ray spectroscopy (EDS), X-ray diffraction (XRD), and Raman spectroscopy. XRD and TEM-EDS measurementsshowed that the molybdenum oxide precursor was successfully transferred into MoS2 nanosheets. It was confirmed from FESEMand TEM images that NS was uniformly distribution on surface of the CF. The HR-TEM images disclosed that the NSwas formed perpendicular to surface of CF fibers via the MoS2 layers growth parallel to CF surface which act as interface. The HER current density was about 12 mA cm−2 at catalyst loading of only 60 μg cm−2 at -0.384 V (vs. RHE).
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