Hydrothermal synthesis of zinc oxide nanoparticles using rice as soft biotemplate

Chemistry Central Journal

Donya Ramimoghadam²  Mohd Zobir Bin Hussein¹  Yun Hin Taufiq-Yap¹ 

[1] Research center for Catalysis Science and Technology PutraCAT, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia

[2] Material Synthesis and Characterization Laboratory (MSCL), Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia

关键词: Hydrothermal method;    Starch;    Soft templating;    Biotemplate;    Rice;    Zinc oxide nanoparticles;   

Others  :  787857
DOI  :  10.1186/1752-153X-7-136

 received in 2013-04-24, accepted in 2013-07-25,  发布年份 2013

【 摘 要 】

Background

Rice as a renewable, abundant bio-resource with unique characteristics can be used as a bio-template to synthesize various functional nanomaterials. Therefore, the effect of uncooked rice flour as bio-template on physico-chemical properties, especially the morphology of zinc oxide nanostructures was investigated in this study.

The ZnO particles were synthesized through hydrothermal-biotemplate method using zinc acetate-sodium hydroxide and uncooked rice flour at various ratios as precursors at 120°C for 18 hours.

Results

The results indicate that rice as a bio-template can be used to modify the shape and size of zinc oxide particles. Different morphologies, namely flake-, flower-, rose-, star- and rod-like structures were obtained with particle size at micro- and nanometer range. Pore size and texture of the resulting zinc oxide particles were found to be template-dependent and the resulting specific surface area enhanced compared to the zinc oxide synthesized without rice under the same conditions. However, optical property particularly the band gap energy is generally quite similar.

Conclusion

Pure zinc oxide crystals were successfully synthesized using rice flour as biotemplate at various ratios of zinc salt to rice. The size- and shape-controlled capability of rice to assemble the ZnO particles can be employed for further useful practical applications.

【 授权许可】

   
2013 Ramimoghadam et al.; licensee Chemistry Central Ltd.

【 图 表 】

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