Pickering Emulsions of Self-Assembled Lead Sulfide Quantum Dots with Janus-Ligand Shells as Nanoreactors for Photocatalytic Reactions

Zhiyuan Huang, Joshua Koubek, Alan Sellinger, Matthew Beard

Research output: Contribution to journalArticlepeer-review

6 Scopus Citations

Abstract

Here we prepare Pickering emulsions with semiconductor quantum dots (QDs). Amphiphilic PbS QDs are prepared by constructing Janus-ligand shells comprised of lipophilic oleic acid and hydrophilic 4-(2,2-dicyanovinyl)cinnamic acid ligands. Upon homogenization, the QDs with Janus-ligand shells self-assemble at the water-dichloromethane interface, forming stable Pickering emulsions. The photocatalytic properties are evaluated by the photodegradation reaction of methyl orange (MO) dye molecules. Under the same conditions, MO was significantly degraded when photocatalyzed by the QD Pickering emulsions, while no degradation was observed when PbS QDs without Janus-ligand shells were employed. This work provides a guide to designing QD-based nanoreactors.

Original languageAmerican English
Pages (from-to)3183-3187
Number of pages5
JournalACS Applied Nano Materials
Volume5
Issue number3
DOIs
StatePublished - 2022

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

NREL Publication Number

  • NREL/JA-5900-81461

Keywords

  • Janus-ligand shells
  • nanoreactors
  • PbS QDs
  • photocatalytic reactors
  • Pickering emulsions
  • semiconductor nanocrystals

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