The Pt/C catalyst was prepared with solid phase reaction method (Pt/C(S)) for the first time. Its performances were compared with that prepared by the traditional liquid phase reaction method. The results demonstrate ...The Pt/C catalyst was prepared with solid phase reaction method (Pt/C(S)) for the first time. Its performances were compared with that prepared by the traditional liquid phase reaction method. The results demonstrate that the electrocatalytic activity of Pt/C catalyst with solid phase reaction method for methanol oxidation is higher than that with liquid phase reaction method. XRD and TEM measurements indicate that the Pt/C(S) possesses low crystalline extent and small particle size.展开更多
An ordered carbon nanotubes (CNTs) film, which was template-synthesized within the porous of an alumina template, modified glassy carbon electrode is fabricated. The electrode exhibits potent electrocatalysis for NADH...An ordered carbon nanotubes (CNTs) film, which was template-synthesized within the porous of an alumina template, modified glassy carbon electrode is fabricated. The electrode exhibits potent electrocatalysis for NADH oxidation in PBS (pH 6.8) with a diminution of the overpotential of more than 600 mV. The anodic peak current increases linearly with NADH concentration from 2?0-5 mol/L to 1?0-3 mol/L with the detection limit of about 5?0-7 mol/L.展开更多
The PdCo bimetallic hollow nanospheres with 80 nm average diameter and around 9.0 nm thickness of the shell were prepared with a special reduction method and characterized with transmission electron microscopy (TEM), ...The PdCo bimetallic hollow nanospheres with 80 nm average diameter and around 9.0 nm thickness of the shell were prepared with a special reduction method and characterized with transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The electrochemical measurements illustrated that the electrocatalytic activity of the PdCo bimetallic hollow nanospheres for the oxidation of formic acid is much higher than that of the Pd solid nanospheres.展开更多
It was reported for the first time that phosphorictungstenic acid (PWA) could promote the oxygen reduction reaction (ORR) and inhibit the methanol oxidation reaction at the cathodic Pt/C catalyst in the direct methano...It was reported for the first time that phosphorictungstenic acid (PWA) could promote the oxygen reduction reaction (ORR) and inhibit the methanol oxidation reaction at the cathodic Pt/C catalyst in the direct methanol fuel cell (DMFC). When the weight ratio of PWA to Pt/C is 1, the composite catalyst increases the reduction current of oxygen by about 38% and decreases the oxidation current of methanol by about 76% compared with that of the Pt/C catalyst.展开更多
It was found for the first time that gramicidin D (GD) molecules can be incorporated intothe ODM monolayer which is self-assembled on the surface of the gold electrode and formmonovalent canon channels.
基金The authors are grateful for the financial support of "973" Project(G2000026408)the National Natural Science Foundation of China(20003005)+1 种基金the Natural Science Foundation of Jiangsu Province(BQ2000009)the Natural Science Foundation of Jilin Province(20000510)
文摘The Pt/C catalyst was prepared with solid phase reaction method (Pt/C(S)) for the first time. Its performances were compared with that prepared by the traditional liquid phase reaction method. The results demonstrate that the electrocatalytic activity of Pt/C catalyst with solid phase reaction method for methanol oxidation is higher than that with liquid phase reaction method. XRD and TEM measurements indicate that the Pt/C(S) possesses low crystalline extent and small particle size.
文摘An ordered carbon nanotubes (CNTs) film, which was template-synthesized within the porous of an alumina template, modified glassy carbon electrode is fabricated. The electrode exhibits potent electrocatalysis for NADH oxidation in PBS (pH 6.8) with a diminution of the overpotential of more than 600 mV. The anodic peak current increases linearly with NADH concentration from 2?0-5 mol/L to 1?0-3 mol/L with the detection limit of about 5?0-7 mol/L.
基金the National Natural Science Foundation of China(Nos.20473038,20573057)the Natural Science Foundation of Jiangsu Province(No.BK2005139,BG2003022,BK2006224)the Natural Science Foundation of the Education Committee of Jiangsu Province(No.05KJB 150061,04KJA 150066).
文摘The PdCo bimetallic hollow nanospheres with 80 nm average diameter and around 9.0 nm thickness of the shell were prepared with a special reduction method and characterized with transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS). The electrochemical measurements illustrated that the electrocatalytic activity of the PdCo bimetallic hollow nanospheres for the oxidation of formic acid is much higher than that of the Pd solid nanospheres.
基金The authors are grateful for the financial supports of“973”Project(G2000026408)“863"Project of Science and Technology Ministry of China(2001 AA323060,2003AA517060)+3 种基金the National Natural Science Foundation of China(20373068,20433060)Foundation of Department of Science and Technology of Jiangsu Province(BG200302)Industrialization Foundation of Advanced Technique of Jiangsu Province(JH02-080)National“211”Key Project.
文摘It was reported for the first time that phosphorictungstenic acid (PWA) could promote the oxygen reduction reaction (ORR) and inhibit the methanol oxidation reaction at the cathodic Pt/C catalyst in the direct methanol fuel cell (DMFC). When the weight ratio of PWA to Pt/C is 1, the composite catalyst increases the reduction current of oxygen by about 38% and decreases the oxidation current of methanol by about 76% compared with that of the Pt/C catalyst.
文摘It was found for the first time that gramicidin D (GD) molecules can be incorporated intothe ODM monolayer which is self-assembled on the surface of the gold electrode and formmonovalent canon channels.
