Stabilized High-Membered and Phase-Pure 2D All Inorganic Ruddlesden–Popper Halide Perovskites Nanocrystals as Photocatalysts for the CO2 Reduction Reaction

Cheng Chieh Lin, Jia Ying Li, Nian Zu She, Shao Ku Huang, Chih Ying Huang, I. Ta Wang, Fu Li Tsai, Chuan Yu Wei, Ting Yi Lee, Di Yan Wang, Cheng Yen Wen, Shao Sian Li, Atsushi Yabushita, Chih Wei Luo, Chia Chun Chen, Chun Wei Chen*

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

In contrast to the 2D organic-inorganic hybrid Ruddlesden–Popper halide perovskites (RPP), a new class of 2D all inorganic RPP (IRPP) has been recently proposed by substituting the organic spacers with an optimal inorganic alternative of cesium cations (Cs+). Nevertheless, the synthesis of high-membered 2D IRPPs (n > 1) has been a very challenging task because the Cs+ need to act as both spacers and A-site cations simultaneously. This work presents the successful synthesis of stable phase-pure high-membered 2D IRPPs of Csn+1PbnBr3n+1 nanosheets (NSs) with n = 3 and 4 by employing the strategy of using additional strong binding bidentate ligands. The structures of the 2D IRPPs (n = 3 and 4) NSs are confirmed by powder X-ray diffraction and high-resolution aberration-corrected scanning transmission electron microscope measurements. These 2D IRPPs NSs exhibit a strong quantum confinement effect with tunable absorption and emission in the visible light range by varying their n values, attributed to their inherent 2D quantum-well structure. The superior structural and optical stability of the phase-pure high-membered 2D IRPPs make them a promising candidate as photocatalysts in CO2 reduction reactions with outstanding photocatalytic performance and long-term stability.

原文英語
文章編號2107881
期刊Small
18
發行號19
DOIs
出版狀態已發佈 - 2022 5月 12

ASJC Scopus subject areas

  • 生物技術
  • 生物材料
  • 化學 (全部)
  • 材料科學(全部)

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