Yuichiro Banba, T. Umeda, H. Kuroe, T. Toyama, Y. Musha, K. Itatani
{"title":"HOMOGENEOUS COATING OF HYDROXYAPATITE ON MULTI-WALL CARBON NANOTUBE IMMERSED IN CALCIUM PHOSPHATESOLUTION BY MICROWAVE HEATING","authors":"Yuichiro Banba, T. Umeda, H. Kuroe, T. Toyama, Y. Musha, K. Itatani","doi":"10.3363/PRB.28.51","DOIUrl":null,"url":null,"abstract":": The conditions for the homogeneous coating of hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 ; HAp) on the multi-wall carbon nanotubes (MWCNTs) were examined via the processes of (i) the acid treatment of conc . nitric and sulfuric acids at 50 C for 24 h or the citric acid at 300 and 350°C for 0.5 h in Ar atmosphere in order to form carboxyl group, and (ii) the microwave heating (100 C, 5 min) of acid-treated MWCNTs in the “apatite-dissolved solution” prepared by bubbling CO 2 gas into the commercial HAp-dispersed water. The microwave heating of surface-modified MWCNTs (the citric acid treatment at 300°C for 0.5 h) in the apatite-dissolved solution was effective in the homogeneous coating of calcium-deficient HAp (Ca/P ratio =1.57), compared to the case of surface modification by conc . nitric and","PeriodicalId":20022,"journal":{"name":"Phosphorus Research Bulletin","volume":"20 1","pages":"51-57"},"PeriodicalIF":0.0000,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Phosphorus Research Bulletin","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3363/PRB.28.51","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
: The conditions for the homogeneous coating of hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 ; HAp) on the multi-wall carbon nanotubes (MWCNTs) were examined via the processes of (i) the acid treatment of conc . nitric and sulfuric acids at 50 C for 24 h or the citric acid at 300 and 350°C for 0.5 h in Ar atmosphere in order to form carboxyl group, and (ii) the microwave heating (100 C, 5 min) of acid-treated MWCNTs in the “apatite-dissolved solution” prepared by bubbling CO 2 gas into the commercial HAp-dispersed water. The microwave heating of surface-modified MWCNTs (the citric acid treatment at 300°C for 0.5 h) in the apatite-dissolved solution was effective in the homogeneous coating of calcium-deficient HAp (Ca/P ratio =1.57), compared to the case of surface modification by conc . nitric and
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