Gamma-phase CsPbBr3 perovskite nanocrystals/polymethyl methacrylate electrospun nanofibrous membranes with superior photo-catalytic property

The Journal of Chemical Physics
Qi ZhangHong Lin

Abstract

Gamma-phase cesium lead tri-bromide perovskite nanocrystals (γ-CsPbBr3 NCs) possess potentially photo-catalytic degradation ability and long-term stability. However, their serious aggregation issue decreases their active surface area, and the recombination of photo-generated hole-electron pairs weakens their photo-catalytic property. Furthermore, these NCs can be easily absorbed on the surface of dyes [e.g., methylene blue (MB)] or dissolved in the dye solution during the photo-catalytic degradation process, thus reducing the amount of γ-CsPbBr3 NCs and their photo-catalytic degradation ability. Besides, the residual γ-CsPbBr3 NCs in the photo-catalytic degradation products also present the toxicity issue (containing Pb) and are hazardous to the ecological environment and human health. In the present study, we fabricated γ-CsPbBr3 NCs/polymethyl methacrylate electrospun nanofibrous membranes (γ-CsPbBr3 NCs/PMMA ENMs) by using electrospinning technology to solve the above problems. It is found that the synthesized γ-CsPbBr3 NCs/PMMA ENMs show a large surface area and the abundant functional groups on their surfaces, which are benefit for forming multiple kinds of chemical bonding effect between γ-CsPbBr3 NCs and PMMA ENMs. In ad...Continue Reading

References

Dec 10, 2013·Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy·Mojtaba Shamsipur, Hamid Reza Rajabi
Mar 19, 2014·Nature Materials·Guichuan XingTze Chien Sum
Nov 8, 2015·Angewandte Chemie·Abhishek SwarnkarAngshuman Nag
Dec 7, 2016·Chemical Communications : Chem Comm·Chujie WangJacek J Jasieniak
Apr 8, 2017·Journal of the American Chemical Society·Yang-Fan XuCheng-Yong Su
Apr 11, 2017·ACS Nano·Federica BertolottiAntonietta Guagliardi
Jan 13, 2018·Nature·Michael A BeckerAlexander L Efros
Jun 6, 2018·Science and Technology of Advanced Materials·Qi ZhangHong Lin
Dec 6, 2019·ACS Applied Materials & Interfaces·Andrés F Gualdrón-ReyesIván Mora-Seró

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Citations

Jul 10, 2021·The Journal of Chemical Physics·Victor BatistaDunwei Wang

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