Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Enhanced Catalytic Activity of Gold@Polydopamine Nanoreactors with
  Multi-compartment Structure Under NIR Irradiation   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.

5
The categories of this paper are: gr-qc
14
The categories of this paper are: math-ph
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
31
The categories of this paper are: ao-sci
0
The categories of this paper are: hep-ph
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
20
The categories of this paper are: acc-phys
7
The categories of this paper are: hep-th
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org
26
The categories of this paper are: bayes-an
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat