Synthesis and photocatalytic property of Au-TiO<sub>2</sub> nanocomposites with controlled morphologies in microfluidic chips.
basic_science · Level V
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- Record sourced from PubMed, PMID 38483182.
- Also identified by DOI 10.1039/d3lc01053h.
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Abstract
We present an efficient approach for the consecutive synthesis of Au-TiO<sub>2</sub> nanocomposites with controlled morphologies in a microfluidic chip. The seed-mediated growth method was employed to synthesize Au nanorods as the core, and TiO<sub>2</sub> layers of varying thicknesses were deposited on the surface or tip of the Au nanorods. Au-TiO<sub>2</sub> nanocomposites with core-shell, dumbbell, and dandelion-like structures can be precisely synthesized in a one-step manner within the microfluidic chip by finely tuning the flow rate of NaHCO<sub>3</sub> and the amount of hexadecyl trimethyl ammonium bromide. Furthermore, we have investigated the photocatalytic activity of the synthesized nanocomposites, and it was found that Au NR-TiO<sub>2</sub> core-shell nanostructure with a thin TiO<sub>2</sub> shell exhibits superior catalytic performance. This work provides an effective and controlled method for the microscale preparation and photocatalytic application of various Au-TiO<sub>2</sub> nanocomposite structures.