The single crystal nickel salicylate tetrahydrate was prepared with the rheological phase reaction method from nickelous hydroxide and salicylic acid. The crystal structure was determined. It is monoclinic, space grou...The single crystal nickel salicylate tetrahydrate was prepared with the rheological phase reaction method from nickelous hydroxide and salicylic acid. The crystal structure was determined. It is monoclinic, space group P2 1/n, a= 0.678 74 (3), b=0.515 91(2), c =2.313 30(9) nm, β= 90.928 6(17)° , V =0.809 94(6) nm 3, Z=2, ρ calcd = 1.661 g\5cm -3 . Final R indices: R =0.027 9 and wR= 0.065 0 \[I >2σ(I)\]. The thermal decomposition mechanism in an inert atmosphere was investigated via TG, DTG and DTA. The thermal decomposition products were characterized with IR and micro\|powder X\|ray diffraction method. A new coordination polymer (NiC 6 H 4 O) n as an intermediate product and nanoscale metal nickel were obtained in the ranges of 364\|429 ℃ and 429\|680 ℃, respectively.展开更多
A new structural copper (II) monosalicylate, Cu(OC6H4C02)·H20, was synthesized by the rheological phase reaction method from salicylic acid and copper oxide in 1∶1 mole ratio. The structure was characterized by ...A new structural copper (II) monosalicylate, Cu(OC6H4C02)·H20, was synthesized by the rheological phase reaction method from salicylic acid and copper oxide in 1∶1 mole ratio. The structure was characterized by powder X-ray diffraction, IR and thermogravimetry. The Cu(OC6 H4 CC2)·H20 belongs to monoclinic system, with cell dimension:a=2.136 28(67),b=0. 657 84(22),c=l. 594 09(50) nm, β=108.434(25) ,V=2.125 28(83) nm3,Z=12, Dcalc=2.041 kg·L?1,D obs=2.003 kg·L?1. The crystal water was lost at 96–250°C. The determined magnetic moment and magnetic susceptibility were 1. 947 B. M. and 6. 546×10?6 (287. 20 K), respectively.展开更多
A new phase, the rare earth complex oxide SnDy2O4 was synthesized by the thermal decomposition of its oxalate precursor that was prepared by rheological phase reaction method. TG, IR, XRD and EPS were used to prove t...A new phase, the rare earth complex oxide SnDy2O4 was synthesized by the thermal decomposition of its oxalate precursor that was prepared by rheological phase reaction method. TG, IR, XRD and EPS were used to prove the formation of the compound SnDy2O4. The structure of SnDy2O4 was refined by Rietveld analysis. SnDy2O4 is cubic, a = 7.40366 ? V = 405.82 ?, Z = 4.展开更多
Lanthanum-rhodamine (6G and B) complexes were synthesized by Rheological Phase Reaction Method. Lanthanum-rhodamine (6G and B) complexes doped polyethylene films which have a function of lights-conversion were prepare...Lanthanum-rhodamine (6G and B) complexes were synthesized by Rheological Phase Reaction Method. Lanthanum-rhodamine (6G and B) complexes doped polyethylene films which have a function of lights-conversion were prepared. The emission and excitation spectra were measured. The experiments of growing seedling and culture were carried out in the shed built with doped and undoped polyethylene films. Lanthanum-rhodamine doped polyethylene films which have a function of lights-conversion can efficiently convert the green light in the sunlight to the red light for photosynthesis of crops, to promote the maturing of crops and raise the yield of crops.展开更多
Lithium iron phosphate coated with carbon （LiFePO4/C） was synthesized by improved solid-state reaction using comparatively lower temperature and fewer sintering time. The carbon came from citric acid, which acted as...Lithium iron phosphate coated with carbon （LiFePO4/C） was synthesized by improved solid-state reaction using comparatively lower temperature and fewer sintering time. The carbon came from citric acid, which acted as a new carbon source. It was characterized by thermogravimetry and differential thermal analysis （TG/DTA）, X ray diffractometer （XRD）, Element Analysis （EA） and Scanning electron microscope （SEM）. We also studied the electrochemical properties of the material. The first discharge capacity of the LiFePO4/C is 121 mAh·g^-1 at 10 mA·g^-1 at room temperature. When the current density increased to 100 mA·g^-1, the first discharge capacity decreased to 110 mAh·g^-1 and retained 95% of the initial capacity after 100 cycles. The LiFePO4/C obtained shows a good electrochemical capacity and cycle ability at a large current density.展开更多
The structural evolution of the Co 3O 4 fine powders prepared by rheological phase reaction and pyrolysis method upon different temperature has been investigated using X ray diffraction (XRD) topography. The electr...The structural evolution of the Co 3O 4 fine powders prepared by rheological phase reaction and pyrolysis method upon different temperature has been investigated using X ray diffraction (XRD) topography. The electrochemical performance of Co 3O 4 electrode materials for Li ion batteries is studied in the form of Li/Co 3O 4 cells. The reversible capacity as high as 930 mAh/g for the Co 3O 4 sample heat treated at 600 ℃ is achieved and sustained over 30 times charge discharge cycles at room temperature. The detailed information concerning the reaction mechanism of Co 3O 4 active material together with lithium ion is obtained through ex situ XRD topography, X ray photoelectron spectroscopy (XPS) analysis and cyclic voltammetry (CV) technique. And it is revealed that a “two step” reaction is involved in the charge and discharge of the Li/Co 3O 4 cells, in which Co 3O 4 active material is reversibly reduced into x Co· (3- x )CoO and then into metallic Co.展开更多
文摘The single crystal nickel salicylate tetrahydrate was prepared with the rheological phase reaction method from nickelous hydroxide and salicylic acid. The crystal structure was determined. It is monoclinic, space group P2 1/n, a= 0.678 74 (3), b=0.515 91(2), c =2.313 30(9) nm, β= 90.928 6(17)° , V =0.809 94(6) nm 3, Z=2, ρ calcd = 1.661 g\5cm -3 . Final R indices: R =0.027 9 and wR= 0.065 0 \[I >2σ(I)\]. The thermal decomposition mechanism in an inert atmosphere was investigated via TG, DTG and DTA. The thermal decomposition products were characterized with IR and micro\|powder X\|ray diffraction method. A new coordination polymer (NiC 6 H 4 O) n as an intermediate product and nanoscale metal nickel were obtained in the ranges of 364\|429 ℃ and 429\|680 ℃, respectively.
基金The National Natural Science Foundation of China(29971024)
文摘A new structural copper (II) monosalicylate, Cu(OC6H4C02)·H20, was synthesized by the rheological phase reaction method from salicylic acid and copper oxide in 1∶1 mole ratio. The structure was characterized by powder X-ray diffraction, IR and thermogravimetry. The Cu(OC6 H4 CC2)·H20 belongs to monoclinic system, with cell dimension:a=2.136 28(67),b=0. 657 84(22),c=l. 594 09(50) nm, β=108.434(25) ,V=2.125 28(83) nm3,Z=12, Dcalc=2.041 kg·L?1,D obs=2.003 kg·L?1. The crystal water was lost at 96–250°C. The determined magnetic moment and magnetic susceptibility were 1. 947 B. M. and 6. 546×10?6 (287. 20 K), respectively.
基金This work was supported by the National Natural Science Foundation of China(No.20071026)
文摘A new phase, the rare earth complex oxide SnDy2O4 was synthesized by the thermal decomposition of its oxalate precursor that was prepared by rheological phase reaction method. TG, IR, XRD and EPS were used to prove the formation of the compound SnDy2O4. The structure of SnDy2O4 was refined by Rietveld analysis. SnDy2O4 is cubic, a = 7.40366 ? V = 405.82 ?, Z = 4.
文摘Lanthanum-rhodamine (6G and B) complexes were synthesized by Rheological Phase Reaction Method. Lanthanum-rhodamine (6G and B) complexes doped polyethylene films which have a function of lights-conversion were prepared. The emission and excitation spectra were measured. The experiments of growing seedling and culture were carried out in the shed built with doped and undoped polyethylene films. Lanthanum-rhodamine doped polyethylene films which have a function of lights-conversion can efficiently convert the green light in the sunlight to the red light for photosynthesis of crops, to promote the maturing of crops and raise the yield of crops.
文摘Lithium iron phosphate coated with carbon （LiFePO4/C） was synthesized by improved solid-state reaction using comparatively lower temperature and fewer sintering time. The carbon came from citric acid, which acted as a new carbon source. It was characterized by thermogravimetry and differential thermal analysis （TG/DTA）, X ray diffractometer （XRD）, Element Analysis （EA） and Scanning electron microscope （SEM）. We also studied the electrochemical properties of the material. The first discharge capacity of the LiFePO4/C is 121 mAh·g^-1 at 10 mA·g^-1 at room temperature. When the current density increased to 100 mA·g^-1, the first discharge capacity decreased to 110 mAh·g^-1 and retained 95% of the initial capacity after 100 cycles. The LiFePO4/C obtained shows a good electrochemical capacity and cycle ability at a large current density.
基金ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .2 983 3 0 90 )
文摘The structural evolution of the Co 3O 4 fine powders prepared by rheological phase reaction and pyrolysis method upon different temperature has been investigated using X ray diffraction (XRD) topography. The electrochemical performance of Co 3O 4 electrode materials for Li ion batteries is studied in the form of Li/Co 3O 4 cells. The reversible capacity as high as 930 mAh/g for the Co 3O 4 sample heat treated at 600 ℃ is achieved and sustained over 30 times charge discharge cycles at room temperature. The detailed information concerning the reaction mechanism of Co 3O 4 active material together with lithium ion is obtained through ex situ XRD topography, X ray photoelectron spectroscopy (XPS) analysis and cyclic voltammetry (CV) technique. And it is revealed that a “two step” reaction is involved in the charge and discharge of the Li/Co 3O 4 cells, in which Co 3O 4 active material is reversibly reduced into x Co· (3- x )CoO and then into metallic Co.
