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Sustainable approach toward synthesis of green functional carbonaceous 3-D micro/nanostructures from biomass

Amirhossein Tavangar1, Bo Tan2 and Krishnan Venkatakrishnan1*

Author affiliations

1 Department of Mechanical and Industrial Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada

2 Department of Aerospace Engineering, Ryerson University, 350 Victoria Street, Toronto, ON M5B 2K3, Canada

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Citation and License

Nanoscale Research Letters 2013, 8:348  doi:10.1186/1556-276X-8-348

Published: 8 August 2013


This study proposes a novel technique to synthesize functional carbonaceous three-dimensional (3-D) micro/nanocompounds from agricultural by-products using femtosecond laser irradiation. Biowastes of rice husk and wheat straw are value-engineered to carbonaceous structures in a single-step process under ambient conditions. Our results demonstrate that by controlling the laser fluence, structures with a variety of different morphologies from nanostructures to microstructures can be achieved. Also, the results indicate that altering the laser processing parameters influences the chemical composition of the synthesized structures. This sustainable approach presents an important step towards synthesizing 3-D micro/nanofibrous compounds from biowaste materials. These structures, as-synthesized or as nanocomposite fillers, can have practical uses in electronic, sensing, biological, and environmental applications.

Femtosecond laser ablation; Carbonaceous compound; 3-D micro/nanostructures; Rice husk; Wheat straw; Biomass; Green approach