Growing Poly(norepinephrine) Layer over Individual Nanoparticles to Boost Hybrid Perovskite Photocatalysts

Yidi Wang, Liangfeng Luo, Ziqi Wang, Benjamin Tawiah, Chang Liu, John H. Xin, Bin Fei, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)

Abstract

To address the poor stability of lead halide perovskite nanoparticles (NPs), monodisperse methylammonium lead bromide (MAPbBr3, M-PE) NPs were successfully encapsulated with a thin layer (10 nm) of poly(norepinephrine) (PNE) by in situ polymerization. The PNE layer endowed M-PE NPs with high structural stability against severe environmental conditions. Furthermore, the chemical interaction between M-PE and PNE facilitates the construction of the core@shell composite, as well as contributes to the enhanced light-harvesting capacity and improved photoelectronic conversion efficiency in photocatalytic activity. The encapsulated NP M-PE@PNE with a band gap of 2.04 eV degraded the organic pollutant of malachite green by 81% in less than 2 h under visible light, which was 4.5 times higher than pristine M-PE NPs. This work provides a practical approach to stabilize and boost the MAPbX3 photocatalyst and carries enormous potential in wide engineering applications.

Original languageEnglish
Pages (from-to)27578-27586
Number of pages9
JournalACS Applied Materials and Interfaces
Volume12
Issue number24
DOIs
Publication statusPublished - 17 Jun 2020

Keywords

  • core@shell structure
  • hybrid perovskite
  • interface activation
  • photocatalysis
  • stabilization

ASJC Scopus subject areas

  • Materials Science(all)

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