Aqueous starch as a stabilizer in zinc oxide nanoparticle synthesis via laser ablation

JOURNAL OF ALLOYS AND COMPOUNDS

卷:516

Article

Zamiri, Reza²  Zakaria, Azmi²  Ahangar, Hossein Abbastabar³  Darroudi, Majid⁴  Zak, Ali Khorsand⁵  Drummen, Gregor P. C.¹ 

[1] Bio&Nano Solut, Cellular Stress & Ageing Program, Bionanosci & Bioimaging Program, D-40472 Dusseldorf, Germany

[2] Univ Putra Malaysia, Fac Sci, Dept Phys, Serdang 43400, Selangor, Malaysia

[3] Univ Putra Malaysia, Fac Sci, Dept Chem, Serdang 43400, Selangor, Malaysia

[4] Univ Putra Malaysia, Inst Adv Technol ITMA, Adv Mat & Nanotechnol Lab, Serdang 43400, Selangor, Malaysia

[5] Univ Malaya, Dept Phys, Low Dimens Mat Res Ctr, Kuala Lumpur 50603, Malaysia

关键词: Laser ablation;    Zinc oxide;    Semi conductor;    Nanoparticle;    Starch;    Stabilizer;    Photoluminescence;    UV-vis spectroscopy;    XRD;    FTIR;    TEM;   

DOI  :  10.1016/j.jallcom.2011.11.118

来源: Elsevier

【 摘 要 】

Zinc oxide is a semiconductor with exceptional thermal, luminescent and electrical properties, even compared with other semiconducting nanoparticles. Its potential for advanced applications in lasers and light emitting diodes, as bio-imaging agent, in biosensors and as drug delivery vehicles, in ointments, coatings and pigments has pulled zinc oxide into the focus of various scientific and engineering research fields. Recently we started investigating if nanoparticle synthesis via laser ablation in the presence of natural stabilizers allows control over size and shape and constitutes a useful, uncomplicated alternative over conventional synthesis methods. In the current paper, we determined the ability of natural starch to act as a size controller and stabilizer in the preparation of zinc oxide nanoparticles via ablation of a ZnO plate in a starch solution with a nanosecond Q-Switched Nd:YAG pulsed laser at its original wavelength (lambda = 1064 nm). Our results show that the particle diameter decreases with increasing laser irradiation time to a mean nanoparticle size of approximately 15 nm with a narrow size distribution. Furthermore, the obtained particle size in starch solution is considerably smaller compared with analogous ZnO nanoparticle synthesis in distilled water. The synthesized and capped nanoparticles retained their photoluminescent properties, but showed blue emission rather than the often reported green luminescence. Evaluation of old preparations compared with freshly made samples showed no agglomeration or flocculation, which was reflected in no significant change in the ZnO nanoparticle size and size distribution. Overall, our experimental results demonstrate that starch can indeed be effectively used to both control particle size and stabilize ZnO nanoparticles in solution. (C) 2011 Elsevier B.V. All rights reserved.

【 授权许可】

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