以四乙氧基硅烷为原料,以氨水为催化剂,采用Sol-gel反应合成了单分散性SiO2小球.结果表明,通过控制原料及氨水的浓度,可以对小球的粒径(70～1 000 nm可调)进行控制;采用红外光谱、固体核磁共振、X射线衍射、扫描电镜及透射电镜等分析手段对小球的结构和形貌进行了表征,结果表明小球具有较为致密的实心结构,基本实现了无机化,并且具有较好的热稳定性能.
参考文献
| [1] | Jain RA;Rhodes CT;Railkar AM;Malick AW;Shah NH .Controlled release of drugs from injectable in situ formed biodegradable PLGA microspheres: effect of various formulation variables.[J].European journal of pharmaceutics and biopharmaceutics: official journal of Arbeitsgemeinschaft fuer Pharmazeutische Verfahrenstechnik e.V,2000(2):257-262. |
| [2] | Hart P W;Sommerfeld J T .Fluid discharge resulting from puncture of spherical process vessels[J].JOURNAL OF HAZARDOUS MATERIALS,1993,33:295-305. |
| [3] | Huang, Haiyong;Remsen, Edward E.;Kowalewski, Tomasz;Wooley, Karen L. .Nanocages derived from shell cross-linked micelle templates[J].Journal of the American Chemical Society,1999(15):3805-0. |
| [4] | Klein D L;Roth R;Lim A K L et al.A single-electron transistor made from a cadmium selenide nanocrystal[J].Nature,1997,389:699-701. |
| [5] | Hu Q;Verghese S;Wyss R A et al.High-frequency (f 1 THz) studies of quantum-effect devices[J].Semiconductor Science and Technology,1996,11:1888-1894. |
| [6] | Blanton S A;Dehestani A;Lin P C et al.Photoluminescence of single semi-conductor nanocrystallites by two-photon excitation microscopy[J].CHEMICAL PHYSICS LETTERS,1994,229:317-322. |
| [7] | S.A.Majetich;Y.Jin .Magnetization directions of individual nanoparticles[J].Science,1999(5413):470-473. |
| [8] | Zakhidov A A;Baughman R H;Iqbal Z .Carbon structures with three-dimensional periodicity at optical wavelengths[J].Science,1998,282:897-901. |
| [9] | San Ming Yang;Hernan Miguez;Geoffrey A. Ozin .Opal Circuits of Light - Planarized Microphotonic Crystal Chips[J].Advanced functional materials,2002(6/7):425-431. |
| [10] | Lu Y;Fan F;Stump A et al.Aerosol assisted self-assembly of mesostructured spherical nanoparticles[J].Nature,1999,398:223-226. |
| [11] | Schacht S;Huo Q;Voigt-Martin I G et al.Oil-Water interface templating of mesoporous macroscale structures[J].Science,1996,273:768-771. |
| [12] | Hotz J.;Meier W. .Vesicle-templated polymer hollow spheres[J].Langmuir: The ACS Journal of Surfaces and Colloids,1998(5):1031-1036. |
| [13] | Discher B M;Won Y Y;Ege D S et al.Polymersomes:tough vesicles made from diblock copolymers[J].Science,1999,284:1143-1146. |
| [14] | Pedro Tartaj;Teresita Gonzdlez-Carreho;Carlos J. Serna .From Hollow to Dense Spheres: Control of Dipolar Interactions by Tailoring the Architecture in Colloidal Aggregates of Superparamagnetic Iron Oxide Nanocrystals[J].Advanced Materials,2004(6):529-533. |
| [15] | Hartley T. Schmidt;Agnes E. Ostafin .Liposome Directed Growth of Calcium Phosphate Nanoshells[J].Advanced Materials,2002(7):532-535. |
| [16] | Buining PA.;Philipse AP.;Lizmarzan LM. .A SIMPLE PREPARATION OF SMALL, SMOOTH SILICA SPHERES IN A SEED ALCOSOL FOR STOBER SYNTHESIS[J].Journal of Colloid and Interface Science,1996(1):318-321. |
| [17] | McDonald R S .Surface functionality of amorphous silica by infrared spectroscopy[J].JOURNAL OF PHYSICAL CHEMISTRY,1958,59:1168-1178. |
| [18] | Lopez T;Sanchez E;Poulain E et al.Experimental and theoretical studies of tetraethoxysilane gelation doped with Mn (Ⅱ)[J].MATERIALS CHEMISTRY AND PHYSICS,1992,32:286-294. |
| [19] | C. Otero Arean;M. Rodriguez Delgado;V. Montouillout;J. C. Lavalley;C. Fernandez;J. J. Cuart Pascual;J. B. Parra .NMR and FTIR spectroscopic studies on the acidity of gallia-silica prepared by a sol-gel route[J].Microporous and Mesoporous Materials,2004(2/3):259-264. |
| [20] | Khalil K M S;Elsamahy A A;Elanany M S .Formation and characterization of high surface area thermally stabilized titania/silica composite materials via hydrolysis of titanium (Ⅳ)tetra-isopropoxide in sols of spherical silica particles[J].Journal of Colloid and Interface Science,2002,249:359-365. |
| [21] | Herdianita N R;Rodgers K A;Browne P R L .Routine instrumental procedures to characterize the mineralogy of modern and ancient silica sinters[J].GEOTHERMICS,2000,29:65-81. |
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%