以氯化镉和硫化钠为原料,2-巯基乙醇(ME)为有机配体,成功制备了粒径可控的、表面富有羟基的CdS纳米晶.采用不同的ME/Cd2+及H2O/DMF比例以观察有机配体及溶剂对生成粒子尺寸的影响.透射电子显微图证实了球形CdS纳米粒子很好地分散在H2O/DMF溶液中,没有任何团聚现象发生.傅立叶变换红外谱图(FT-IR)显示了羟基基团成功地包覆在纳米晶的表面.X线衍射(XRD)测试揭示了功能化CdS纳米晶的晶形主要为立方晶.
Cadmium chloride and sodium sulfide were employed as raw materials to prepare hydroxyl coated and size tunable CdS nanocrystal in the presence of 2-mercaptoethanol (ME) as organic ligand. Different ratios of ME/Cd2+ and H2O/DMF were performed to examine the effects of the organic ligand and solvents on the resulting particles size. The spherical nanoparticles prepared were well dispersed in H2 O/DMF solution without any aggregate, which was confirmed with transmission electron microscopy (TEM). Fourier transform infrared (FT-IR) spectra showed that hydroxyl group was coated on the surface of nanocrystal successfully. X-ray diffraction (XRD) characterization revealed the cubic phase was predominant in the functionalized CdS nanocrystal.
参考文献
| [1] | Hu K.;Bard AJ.;Brust M. .Characterization and surface charge measurement of self-assembled CdS nanoparticle films[J].Chemistry of Materials,1998(4):1160-1165. |
| [2] | Brus L E .[J].Journal of Physical Chemistry,1986,90(12):2555-2560. |
| [3] | Henglein A .[J].Chemical Reviews,1989,89(08):1861-1873. |
| [4] | Borrelli N F;Hall D W;Holland H J .[J].Journal of Applied Physics,1987,61:5399-5403. |
| [5] | Hidenori Otsuka;Yoshitsugu Akiyama;Yukio Nagasaki;Kazuori Kataoka .Quantitative and Reversible Lectin-induced Association of Gold Nanoparticles Modified with #alpha#-lactosyl-#omega#-mercapto-poly(ethyl glycol)[J].Journal of the American Chemical Society,2001(34):8226-8230. |
| [6] | Carrot G.;Rutot-Houze D.;Pottier A.;Degee P.;Hilborn J.;Dubois P. .Surface-initiated ring-opening polymerization: A versatile method for nanoparticle ordering[J].Macromolecules,2002(22):8400-8404. |
| [7] | Ohno K.;Koh K.;Tsujii Y.;Fukuda T. .Synthesis of gold nanoparticles coated with well-defined, high-density polymer brushes by surface-initiated living radical polymerization[J].Macromolecules,2002(24):8989-8993. |
| [8] | Ni T.;Nagesha DK.;Robles J.;Materer NF.;Mussig S.;Kotov NA. .CdS nanoparticles modified to chalcogen sites: New supramolecular complexes, butterfly bridging, and related optical effects [Review][J].Journal of the American Chemical Society,2002(15):3980-3992. |
| [9] | Du H.;Xu GQ.;Chin WS.;Huang L.;Ji W. .Synthesis, characterization, and nonlinear optical properties of hybridized CdS-polystyrene nanocomposites[J].Chemistry of Materials,2002(10):4473-4479. |
| [10] | Hirai T;Saito T;Komasawa I .[J].Journal of Physical Chemistry B,2001,105(40):9711-9714. |
| [11] | Lara I. Halaoui .Layer-by-Layer Assembly of Polyacrylate-Capped CdS Nanoparticles in Poly(diallyldimethylammonium chloride) on Solid Surfaces[J].Langmuir: The ACS Journal of Surfaces and Colloids,2001(22):7130-7136. |
| [12] | Murugan AV.;Kale BB.;Apte SK.;Kulkarni AV.;Sonawane RS. .Microwave-solvothermal synthesis of nanocrystalline cadmium sulfide[J].Materials Chemistry and Physics,2001(1):98-102. |
| [13] | Wang S H;Yang S H;Yang C L et al.[J].Journal of Physical Chemistry B,2000,104(50):11853-11858. |
| [14] | Tao C.;Zheng SP.;Mohwald H.;Li JB. .CdS crystal growth of lamellar morphology within templates of polyelectrolyte/surfactant complex[J].Langmuir: The ACS Journal of Surfaces and Colloids,2003(21):9039-9042. |
| [15] | Weller H;Schmidt H M;Koch U et al.[J].Chemical Physics Letters,1986,124:557-561. |
| [16] | Vossmeyer T;Katsikas L;Gierig M et al.[J].Journal of Physical Chemistry,1994,98(31):7665-7673. |
| [17] | Nanda K K;Sarangi S N;Sahu S N .[J].Nano-Structured Materials,1998,10(08):1401-1410. |
| [18] | Rrsseti R;Hill R;Gibson J M et al.[J].Journal of Chemical Physics,1995,82(05):552-558. |
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