01847nas a2200145   4500008004100000245011400041210006900155260000800224300001600232490000700248520126600255100002301521700003001544856012701574       2017                        eng d00aInsights in the diffusion controlled interfacial flow synthesis of Au nanostructures in a microfluidic system0 aInsights in the diffusion controlled interfacial flow synthesis   cDEC  a14315-143240 v333 aContinuous segmented flow interfacial synthesis of Au nanostructures is demonstrated in a microchannel reactor. This study brings new insights into the growth of nanostructures at continuous interfaces. The size as well as the shape of the nanostructures showed significant dependence on the reactant concentrations, reaction time, temperature, and surface tension, which actually controlled the interfacial mass transfer. The microchannel reactor assisted in achieving a high interfacial area, as well as uniformity in mass transfer effects. Hexagonal nanostructures were seen to be formed in synthesis times as short as 10 min. The wettability of the channel showed significant effect on the particle size as well as the actual shape. The hydrophobic channel yielded hexagonal structures of relatively smaller size than the hydrophilic microchannel, which yielded sharp hexagonal bipyramidal particles (diagonal distance of 30 nm). The evolution of particle size and shape for the case of hydrophilic microchannel is also shown as a function of the residence time. The interfacial synthesis approach based on a stable segmented flow promoted an excellent control on the reaction extent, reduction in axial dispersion as well as the particle size distribution.1 aKulkarni, Amol, A.1 aCabeza, Victor, Sebastian  uhttps://library.ncl.res.in/content/insights-diffusion-controlled-interfacial-flow-synthesis-au-nanostructures-microfluidic