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- W2349273072 abstract "CNTs with 5 nm wall thickness and 140~220 nm tube diameter as well as CNTs with 50 nm wall thickness and 80~200 nm tube diameter were prepared,and the effects of the pretreatment of the two kinds of CNTs with concentrated HNO3 on the structure and surface groups of the CNTs were studied.It was found that after the pretreatment,the amount of the charge and discharge of the double electrode layer for the CNTs with the thick wall(Qd) and the amount of the electricity for the oxidation of the oxygen-containing groups on the CNTs surface(Qo) increased by 1.34 and 0.098 mC,respectively,while for the CNTs with the thin wall,they increased by 5.69 and 0.175 mC,respectively.The result indicates that the CNTs with the thin wall are easier to break apart and the carbon atoms on the wall surface easier to oxidize when the CNTs are treated with concentrated HNO3.When the Pt particles obtained with the general liquid phase reduction method were deposited on the CNTs surfaces pretreated,the Pt particles were easier to uniformly adsorb on the surface of the CNTs with the thin wall,due to the fact that the specific surface area of the CNTs with the thin wall after the pretreatment was larger and the content of the oxygen-containing groups was higher.Therefore,the electrocatalytic activity of the Pt catalyst supported on the CNTs with the thin wall after the pretreatment was very high for methanol oxidation." @default.
- W2349273072 created "2016-06-24" @default.
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- W2349273072 date "2008-01-01" @default.
- W2349273072 modified "2023-09-23" @default.
- W2349273072 title "Preparation and Electrocatalytic Activity of Pt Catalysts Supported on Nanotubes with Thick and Thin Walls for Methanol Oxidation" @default.
- W2349273072 hasPublicationYear "2008" @default.
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