昇温脱離法を利用した炭素材料の表面構造解析
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概要
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Temperature-progremmed desorption (TPD) method is useful for analyzing the surface structure, that is, oxygen-containing functional groups of carbon materials. This review introduced the analysis of the activated carbon fiber sample by TPD method, and discussed the change in the functional groups caused by the oxidation treatment and the relationship with the porosity parameters estimated from the nitrogen adsorption isotherm. In addition, the structure of single-walled carbon nanotube (SWCNT) samples treated with nitric acid and then heated in either an inert gas or a hydrogen flow were evaluated by TPD method. Subsequent heat treatment of the acid-treated SWCNT sample is effective for the increase in the nitrogen or hydrogen adsorption due to the removal of the functional groups introduced by the acid treatment, and a hydrogen flow was more effective than an inert gas flow.
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