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

doi:10.1021/acsami.0c06081

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

ACS Appl Mater Interfaces. 2020 Jun 17;12(24):27578-27586. doi: 10.1021/acsami.0c06081. Epub 2020 Jun 4.

Authors

Yidi Wang¹, Liangfeng Luo¹, Ziqi Wang¹, Benjamin Tawiah¹, Chang Liu¹, John H Xin¹, Bin Fei¹, Wai-Yeung Wong²

Affiliations

¹ Nanotechnology Centre, Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China.
² Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong 999077, China.

PMID: 32456422
DOI: 10.1021/acsami.0c06081

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.

Keywords: core@shell structure; hybrid perovskite; interface activation; photocatalysis; stabilization.