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Title: Pressure-Induced Transformations of Three-Component Heterostructural Nanocrystals with CdS–Au2S Janus Nanoparticles as Hosts and Small Au Nanoparticles as Satellites

Journal Article · · ACS Applied Nano Materials
ORCiD logo [1];  [1]; ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [2];  [3];  [3]; ORCiD logo [1]
  1. Brown Univ., Providence, RI (United States). Dept. of Chemistry
  2. Univ. of Connecticut, Storrs, CT (United States)
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
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Heterostructural nanocrystals (HNCs) have drawn enormous attention because of the combined and synergistic properties inherited from their individual components and interactions. In this paper, we design a three-component CdS-Au2S-Au Janus-satellite HNC to study the pressure process of HNC superlattices (HNC-SLs). In situ small/wide-angle X-ray scattering shows that the HNC-SLs can undergo structural transformations at both atomic and meso scales. At the same time, CdS-Au2S-Au Janus-satellite HNCs can morphologically transform into CdS-Au2S-Au heterotrimer HNCs through intraparticle migration and coalescence of Au satellites. Our results demonstrate that pressure can be employed as a clean and efficient way to fabricate complex heterostructural nanomaterials suitable for potential applications in photocatalysis and theranostics.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
SC0012704; EAR-1606856; NA-0003858
OSTI ID:
1632391
Report Number(s):
BNL-216003-2020-JAAM
Journal Information:
ACS Applied Nano Materials, Vol. 2, Issue 11; ISSN 2574-0970
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

Figures / Tables (13)

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Table S1(p. 11)table Table S1
Figure S5(p. 12)figure Figure S5
Table S2(p. 13)table Table S2
Figure S6(p. 14)figure Figure S6
Table S3(p. 15)table Table S3
Table S4(p. 16)table Table S4
Figure S7(p. 17)figure Figure S7
Figure S8(p. 18)figure Figure S8
Figure S9(p. 19)figure Figure S9

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77 NANOSCIENCE AND NANOTECHNOLOGY
high-pressure processing
heterostructural nanocrystal
heterotrimer
coalescence
nanocrystal superlattice
gold
cadmium sulfide
lattices
x-ray scattering
transmission electron microscopy