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王翠翠,童晨光,蔡安琦,张意茹,李新宇,郭宏伟,殷海荣.Mg-Ta2O5纳米棒涂层的制备、表征及其体外生物活性[J].稀有金属材料与工程(英文),2021,50(5):1753~1759.[WANG Cuicui,TONG Chenguang,CAI Anqi,ZHANG Yiru,LI Xinyu,GUO Hongwei and YIN Hairong.Preparation, characterization and in vitro bioactivity of Mg-Ta2O5 nanorods[J].Rare Metal Materials and Engineering,2021,50(5):1753~1759.]
Preparation, characterization and in vitro bioactivity of Mg-Ta2O5 nanorods
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Received:May 16, 2020  
DOI:
Key words: Mg doping  Ta2O5 nanorods  hydrothermal treatment  biological activity
Foundation item:国家自然科学(青年)(51801117),陕西省自然科学(青年)(2018JQ8008),西安市未央区科技计划项目(201706),陕西省国际科技合作计划项目(2018KW-030),陕西省重点研发计划(2017ZDXM-NY-048)。
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WANG Cuicui,TONG Chenguang,CAI Anqi,ZHANG Yiru,LI Xinyu,GUO Hongwei and YIN Hairong  
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Abstract:
      In this research, tantalum was modified by two-step hydrothermal treatment, and magnesium-doped tantalum oxide nanorods with narrow rod spacing were obtained on the surface of tantalum. The morphology and microstructure of nanorods were observed with the change of the doping amount of magnesium. In the process of hydrothermal treatment, the best concentration of magnesium acetate solution was 0.05 M, and the content of Mg in tantalum oxide nanorods reached 4.25 at%, and magnesium was doped in the form of Mg2+. The roughness was measured by AFM and the roughness of Ta2O5 nanorods and Mg-Ta2O5 nanorods was higher than that of pure tantalum. ICP results showed that the precipitation rate of magnesium ions in normal saline increased greatly at first and then slowed down. Ta2O5 nanorod could not induce apatite until 12 days while apatite deposited on the surface of Mg-Ta2O5 nanorod coating for less than 8 days in biological activity test. Mg-Ta2O5 nanorod coating effectively improved the biological activity of tantalum substrate.