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Polar Aromatic Two-dimensional Dion-Jacobson Halide Perovskites for Efficient Photocatalytic H 2 Evolution.
- Source :
-
Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2024 Apr 08; Vol. 63 (15), pp. e202319882. Date of Electronic Publication: 2024 Feb 26. - Publication Year :
- 2024
-
Abstract
- Polar materials with spontaneous polarization (P <subscript>s</subscript> ) have emerged as highly promising photocatalysts for efficient photocatalytic H <subscript>2</subscript> evolution owing to the P <subscript>s</subscript> -enhanced photogenerated carrier separation. However, traditional inorganic polar materials often suffer from limitations such as wide band gaps and poor carrier transport, which hinders their photocatalytic H <subscript>2</subscript> evolution efficiency. Here, we rationally synthesized a series of isostructural two-dimensional (2D) aromatic Dion-Jacobson (DJ) perovskites, namely (2-(2-Aminoethyl)pyridinium)PbI <subscript>4</subscript> (2-APDPI), (3-(2-Aminoethyl)pyridinium)PbI <subscript>4</subscript> (3-APDPI), and (4-(2-Aminoethyl)pyridinium)PbI <subscript>4</subscript> (4-APDPI), where 2-APDPI and 4-APDPI crystalize in polar space groups with piezoelectric constants (d <subscript>33</subscript> ) of approximately 40 pm V <superscript>-1</superscript> and 3-APDPI adopts a centrosymmetric structure. Strikingly, owing to the P <subscript>s</subscript> -facilitated separation of photogenerated carriers, polar 2-APDPI and 4-APDPI exhibit a 3.9- and 2.8-fold increase, respectively, in photocatalytic H <subscript>2</subscript> evolution compared to the centrosymmetric 3-APDPI. As a pioneering study, this work provides an efficient approach for exploring new polar photocatalysts and highlights their potential in promoting photocatalytic H <subscript>2</subscript> evolution.<br /> (© 2024 Wiley‐VCH GmbH.)
Details
- Language :
- English
- ISSN :
- 1521-3773
- Volume :
- 63
- Issue :
- 15
- Database :
- MEDLINE
- Journal :
- Angewandte Chemie (International ed. in English)
- Publication Type :
- Academic Journal
- Accession number :
- 38337137
- Full Text :
- https://doi.org/10.1002/anie.202319882