TY  - JOUR
A1  - Mei, Shilin
A1  - Kochovski, Zdravko
A1  - Roa, Rafael
A1  - Gu, Sasa
A1  - Xu, Xiaohui
A1  - Yu, Hongtao
A1  - Dzubiella, Joachim
A1  - Ballauff, Matthias
A1  - Lu, Yan
T1  - Enhanced Catalytic Activity of Gold@Polydopamine Nanoreactors with Multi-compartment Structure Under NIR Irradiation
JF  - Nano-Micro Letters
N2  - Photothermal conversion (PTC) nanostructures have great potential for applications in many fields, and therefore, they have attracted tremendous attention. However, the construction of a PTC nanoreactor with multi-compartment structure to achieve the combination of unique chemical properties and structural feature is still challenging due to the synthetic difficulties. Herein, we designed and synthesized a catalytically active, PTC gold (Au)@polydopamine (PDA) nanoreactor driven by infrared irradiation using assembled PS-b-P2VP nanosphere as soft template. The particles exhibit multi-compartment structure which is revealed by 3D electron tomography characterization technique. They feature permeable shells with tunable shell thickness. Full kinetics for the reduction reaction of 4-nitrophenol has been investigated using these particles as nanoreactors and compared with other reported systems. Notably, a remarkable acceleration of the catalytic reaction upon near-infrared irradiation is demonstrated, which reveals for the first time the importance of the synergistic effect of photothermal conversion and complex inner structure to the kinetics of the catalytic reduction. The ease of synthesis and fresh insights into catalysis will promote a new platform for novel nanoreactor studies.
KW  - Gold@polydopamine
KW  - 3D tomography
KW  - Nanoreactor
KW  - Catalysis
KW  - Photothermal conversion
Y1  - 2019
U6  - https://doi.org/10.1007/s40820-019-0314-9
SN  - 2311-6706
SN  - 2150-5551
VL  - 11
IS  - 1
PB  - Shanghai JIAO TONG univ press
CY  - Shanghai
ER  -