l＇-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene （Fc-GSH） was synthesized from ferrocene dicarboxylic acid and reduced glutathione （GSH） with 4 steps. IR and 1^H-NMR were used to characterize the products. T...l＇-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene （Fc-GSH） was synthesized from ferrocene dicarboxylic acid and reduced glutathione （GSH） with 4 steps. IR and 1^H-NMR were used to characterize the products. Then Fc-GSH was immobilized on the surface of gold electrode. Cyclic votammetry （CV） was adopted to investigate the electrochemical properties of this Fc-GSH modified electrode in the absence and presence of Cd^2＋ aqueous solutions. The peak oxidation potential （Ea） and reduction potential （Ec） of Fc-GSH modified electrode were observed at Ea= 0.74 V and Ec= 0.64 V （vs Ag/AgCl） before the accumulation of Cd^2＋. This redox process is a monoelectron chemical reaction. The anodic shift is about 80 mV in the presence of 20 nmol/L of Cd^2＋ aqueous solution. Moreover, this shift is in proportion to the concentration of Cd^2＋ when the concentration of Cd^2＋ is lower than 20 nmol/L. So the modified electrode can be used as probes to detect cadmium ions with the limit of 0.1 nmol/L by cyclic voltammetry.展开更多
: The crystal structure of an inclusion compound formed between acetyl-ferrocene pyridine-2, 6-diformylhydrazone and ethanol was report in the present work.The crystal of C33,H35N5O3Fe2 is monoclinic, space group C2/c...: The crystal structure of an inclusion compound formed between acetyl-ferrocene pyridine-2, 6-diformylhydrazone and ethanol was report in the present work.The crystal of C33,H35N5O3Fe2 is monoclinic, space group C2/c with a = 23. 249 (3 ), b=ll. 576(2), c=22. 794(4) A, β=103. 53(l)’, V=5964(1) A3, Mr=66l- 37, Z=8, Dc= 1. 473g/cm3, F (000) = 2752. 00, μ = 10. l5 cm-1. It was found that theethanol molecule present in the crystal lattice depends on the van der Waals force ratherthan hydrogen bonding.展开更多
A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and wa- ter-free conditions. The dispersion, structure and morphology of the iron species on the Fe-Y c...A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and wa- ter-free conditions. The dispersion, structure and morphology of the iron species on the Fe-Y catalysts were characterized by XRD, TEM and UV-Vis. The catalytic activities of Fe-Y samples were measured in selective catalytic redaction of NO with ammonia （NH3-SCR）. The results showed that the iron species on the HY zeolite support were mainly made up of isolated Fe3＋ ions, FexOy oligomers and a little amount of 〈 3 nm spherical Fe203 particles. Isolated Fe3＋ ions are predominating among all the Fe-Y catalysts. The sum of isolated Fe3＋ ions and FexOy oligomers took up more than 90% percent of total iron species on the Fe-Y till 10.0 wt% loading of Fe.展开更多
基金Project(20676153) supported by the National Natural Science Foundation of China
文摘l＇-cysteaminecarbonyl-1-glutathionecarbonyl-ferrocene （Fc-GSH） was synthesized from ferrocene dicarboxylic acid and reduced glutathione （GSH） with 4 steps. IR and 1^H-NMR were used to characterize the products. Then Fc-GSH was immobilized on the surface of gold electrode. Cyclic votammetry （CV） was adopted to investigate the electrochemical properties of this Fc-GSH modified electrode in the absence and presence of Cd^2＋ aqueous solutions. The peak oxidation potential （Ea） and reduction potential （Ec） of Fc-GSH modified electrode were observed at Ea= 0.74 V and Ec= 0.64 V （vs Ag/AgCl） before the accumulation of Cd^2＋. This redox process is a monoelectron chemical reaction. The anodic shift is about 80 mV in the presence of 20 nmol/L of Cd^2＋ aqueous solution. Moreover, this shift is in proportion to the concentration of Cd^2＋ when the concentration of Cd^2＋ is lower than 20 nmol/L. So the modified electrode can be used as probes to detect cadmium ions with the limit of 0.1 nmol/L by cyclic voltammetry.
文摘: The crystal structure of an inclusion compound formed between acetyl-ferrocene pyridine-2, 6-diformylhydrazone and ethanol was report in the present work.The crystal of C33,H35N5O3Fe2 is monoclinic, space group C2/c with a = 23. 249 (3 ), b=ll. 576(2), c=22. 794(4) A, β=103. 53(l)’, V=5964(1) A3, Mr=66l- 37, Z=8, Dc= 1. 473g/cm3, F (000) = 2752. 00, μ = 10. l5 cm-1. It was found that theethanol molecule present in the crystal lattice depends on the van der Waals force ratherthan hydrogen bonding.
基金support of the National Natural Science Foundation of China(20903080)
文摘A series of Fe-Y zeolite catalysts with different Fe loading were prepared by ferrocene sublimation under solvent and wa- ter-free conditions. The dispersion, structure and morphology of the iron species on the Fe-Y catalysts were characterized by XRD, TEM and UV-Vis. The catalytic activities of Fe-Y samples were measured in selective catalytic redaction of NO with ammonia （NH3-SCR）. The results showed that the iron species on the HY zeolite support were mainly made up of isolated Fe3＋ ions, FexOy oligomers and a little amount of 〈 3 nm spherical Fe203 particles. Isolated Fe3＋ ions are predominating among all the Fe-Y catalysts. The sum of isolated Fe3＋ ions and FexOy oligomers took up more than 90% percent of total iron species on the Fe-Y till 10.0 wt% loading of Fe.
