Issue 9, 2021

Exfoliated conjugated porous polymer nanosheets for highly efficient photocatalytic hydrogen evolution

Abstract

In this contribution, we developed a simple, scalable, and universal strategy to exfoliate conjugated porous polymers (CPPs) into 2D nanosheets. A series of pyrenyl (Py)-, benzene (B)-, thienyl (T)-, thieno[3,2-b]thiophene (Tt)- and dithieno[3,2-b:2′,3′-d]thiophene (Ttt)-based CPPs were facilely exfoliated into 2D ultrathin sheets with a thickness of 5–18 nm in reasonable yields of 6–20% upon sonication in N-methyl pyrrolidone. Owing to more exposed active sites and shorter migration distances of charge carriers, the photocatalytic hydrogen production rate of the CPP 2-D nanosheets is 1.5–20 times higher than those of their bulk counterparts. The current study represents the first systematic report on the solvent-assisted exfoliation of CPP materials to produce 2D ultrathin lamellae from bulk CPPs with common structures, which might provide new possibilities for the practical application of 2D CPPs.

Graphical abstract: Exfoliated conjugated porous polymer nanosheets for highly efficient photocatalytic hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
25 Nov. 2020
Accepted
16 Janv. 2021
First published
16 Janv. 2021

J. Mater. Chem. A, 2021,9, 5787-5795

Exfoliated conjugated porous polymer nanosheets for highly efficient photocatalytic hydrogen evolution

J. Cheng, Z. Tan, Y. Xing, Z. Shen, Y. Zhang, L. Liu, K. Yang, L. Chen and S. Liu, J. Mater. Chem. A, 2021, 9, 5787 DOI: 10.1039/D0TA11479K

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