Abstract
HighlightsGold@polydopamine particles with multi-compartment structure were synthesized by using block copolymer of PS-b-P2VP as soft template and characterized by 3D electron tomography technique.The particles can be applied as catalytic nanoreactors for the full kinetic study of reduction reaction of 4-nitrophenol by NaBH4.The nanoreactors show remarkable enhancement of the catalytic activity under NIR irradiation.
Highlights
Photothermal conversion (PTC) nanostructures, which can absorb incident photons and generate heat, have attracted tremendous attention due to their promising applications for photothermal steam generation, photothermal therapy, photothermal imaging, solar energy harvesting, sea water desalinization, and catalysis [1,2,3,4,5,6]
Reduced graphene oxide-based photothermal catalysts, Ni/reduced graphene oxide (rGO) and Cu/rGO nanocomposites were reported for the reduction of 4-nitrophenol to 4-aminophenol with NaBH4 as a reducing agent [14, 15]
These nanoreactors exhibit photothermal responsiveness upon NIR, and pro‐ vide multi-confinement at nanoscale for target molecules, which may contribute to potential applications in templated synthesis, biotechnology and controllable catalysis
Summary
Photothermal conversion (PTC) nanostructures, which can absorb incident photons and generate heat, have attracted tremendous attention due to their promising applications for photothermal steam generation, photothermal therapy, photothermal imaging, solar energy harvesting, sea water desalinization, and catalysis [1,2,3,4,5,6]. Despite their ability to successfully form vesicles, fatty acids and phospholipids often lack sufficient robustness due to their small bilayer thickness, which leads to low mechanical stability and leakiness This has triggered research in the area of polymer-based multi-compartment nanostructures. Compared with other photothermal materials, the relationship between the PDA nanostructures and their photothermal properties, as well as the influence of the complex structure on the kinetics of catalytic reactions under NIR irradiation, has not been intensively studied due to the synthetic difficulties. To the best of our knowledge, this is the first report on the synthesis of PDA-based nanoreactors with multi-compartment structure These nanoreactors exhibit photothermal responsiveness upon NIR, and pro‐ vide multi-confinement at nanoscale for target molecules, which may contribute to potential applications in templated synthesis, biotechnology and controllable catalysis
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