首先采用化学氧化在块体Ti表面制备出多孔纳米TiO_2,随后通过高能离子束轰击实现Ag纳米粒子在TiO_2表面的有效固定, 最终在Ti表面制备出Ag/TiO_2纳米复合材料.采用XRD、SEM及TEM手段对其进行了结构表征.结果表明,化学氧化法可制备出多孔纳米TiO_2,其晶粒尺寸为10 nm左右;通过调节高能Ar离子束轰击的时间,可对TiO_2晶粒尺寸进行小范围有效控制.
In present study, porous nanocrystalline TiO_2 was prepared firstly on surface of bulk Ti by chemical oxidation, and then Ag nanoparticles was effectively fixed on TiO_2 by high energy Ar ion beam bombardment. Finally, Ag/TiO_2 nanocomposites was formed on Ti surface. XRD, SEM and TEM were used for structure characterization. The results show that porous nanocrystalline TiO_2 with grain size ≈10 nm could be prepared by chemical oxidation, and the grain size of TiO_2 could be controlled by adjusting bombardment time.
参考文献
| [1] | Liu XY;Chu PK;Ding CX .Surface modification of titanium, titanium alloys, and related materials for biomedical applications[J].Materials Science & Engineering, R. Reports: A Review Journal,2004(3/4):49-121. |
| [2] | Kokubo T;Kim HM;Kawashita M .Novel bioactive materials with different mechanical properties.[J].Biomaterials,2003(13):2161-2175. |
| [3] | Thomsen P;Larsson C;Ericson LE;Sennerby L;Lausmaa J;Kasemo B .Structure of the interface between rabbit cortical bone and implants of gold, zirconium and titanium[J].Journal of Materials Science. Materials in Medicine,1997(11):653-665. |
| [4] | Ohtsuki C;Lida H;Hayakawa S et al.Bioactivity of titanium treated with hydrogen peroxide solutions containing metal chlorides[J].Journal of Biomedical Materials Research,1997,35:39-47. |
| [5] | Wang XX;Hayakawa S;Tsuru K;Osaka A .Bioactive titania-gel layers formed by chemical treatment of Ti substrate with a H2O2/HCl solution.[J].Biomaterials,2002(5):1353-1357. |
| [6] | Wang,XX;Hayakawa,S;Tsuru,K;Osaka,A .Improvement of bioactivity of H(2)O(2)/TaCl(5)-treated titanium after subsequent heat treatments.[J].Journal of Biomedical Materials Research. Part A, B,2000(1):171-176. |
| [7] | Wu JM;Wang M;Li YW;Zhao FD;Ding XJ;Osaka A .Crystallization of amorphous titania gel by hot water aging and induction of in vitro apatite formation by crystallized titania[J].Surface & Coatings Technology,2006(3/4):755-761. |
| [8] | Qing Ling Feng;Taik Nam Kim;Jing Wu;Eui Seo Park;Jong Ock Kim;Dae Young Lim;Fu Zhai Cui .Antibacterial effects of Ag-HAp thin films on alumina substrates[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,1998(1/2):214-219. |
| [9] | 宁远涛;赵怀志.银[M].长沙:中南工业大学出版社,2005:395-411. |
| [10] | C. Baker;A. Pradhan;L. Pakstis;Darrin J. Pochan;S. Ismat Shah .Synthesis and Antibacterial Properties of Silver Nanoparticles[J].Journal of nanoscience and nanotechnology,2005(2):244-249. |
| [11] | Cullity B D.Elements of X-ray Diffraction[M].Reading,MA:Addison-Wesley Publishing Company,1978 |
| [12] | J. Thiel;L. Pakstis;S. Buzby;M. Raffi;C. Ni;D. J. Pochan;S. Ismat Shah .Antibacterial Properties of Silver-Doped Titania[J].Small,2007(5):799-803. |
| [13] | Wang XH;Prokert F;Reuther H;Maitz MF;Zhang F .Chemical composition and biocompatibility of Ti-Ag-O films prepared by ion beam assisted deposition[J].Surface & Coatings Technology,2004(1):12-17. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%