Au nanoparticles are expected for the media to transfer genes into plants. However, the control of particle size distribution （PSD） and shape of Au nanoparticles is too difficult to design and prepare particles with...Au nanoparticles are expected for the media to transfer genes into plants. However, the control of particle size distribution （PSD） and shape of Au nanoparticles is too difficult to design and prepare particles with suitable quality for the gene supporting media. Reduction crystal- lization experiments were performed in aqueous solution in order to clarify the effect of feeding conditions such as feeding profile, feeding rate, and feeding amount on PSD and shape of Au nanopartieles. Ascorbic acid （AsA） was selected as a reducing agent because it is safe for plants. Au particles of 50nm, 50-200nm, and 150-400nm were obtained in batch operation, single-jet, and double-jet, respectively. Moreover, in single-jet and double-jet, the mean size of the obtained Au particles increases with the decrease of feeding rate or the increase of feeding amount. It is concluded that PSD of Au nanoparticles can be controlled in the range of 50-400 nm by changing feeding conditions of AsA and HAuCl4 aqueous solution.展开更多
文摘Au nanoparticles are expected for the media to transfer genes into plants. However, the control of particle size distribution （PSD） and shape of Au nanoparticles is too difficult to design and prepare particles with suitable quality for the gene supporting media. Reduction crystal- lization experiments were performed in aqueous solution in order to clarify the effect of feeding conditions such as feeding profile, feeding rate, and feeding amount on PSD and shape of Au nanopartieles. Ascorbic acid （AsA） was selected as a reducing agent because it is safe for plants. Au particles of 50nm, 50-200nm, and 150-400nm were obtained in batch operation, single-jet, and double-jet, respectively. Moreover, in single-jet and double-jet, the mean size of the obtained Au particles increases with the decrease of feeding rate or the increase of feeding amount. It is concluded that PSD of Au nanoparticles can be controlled in the range of 50-400 nm by changing feeding conditions of AsA and HAuCl4 aqueous solution.
