Exfoliation of a Two-Dimensional Metal-Organic Framework for Enhanced Photocatalytic CO2 Reduction

Ke Zhang; Zhi-Bin Fang; Qian-Qian Huang; An-An Zhang; Ji-Long Li; Jun-Yu Li; Yue Zhang; Teng Zhang; Rong Cao

doi:10.1021/acs.inorgchem.3c01142

Exfoliation of a Two-Dimensional Metal-Organic Framework for Enhanced Photocatalytic CO₂ Reduction

Inorg Chem. 2023 Jun 5;62(22):8472-8477. doi: 10.1021/acs.inorgchem.3c01142. Epub 2023 May 24.

Authors

Ke Zhang^{1

2

3}, Zhi-Bin Fang¹, Qian-Qian Huang^{1

4}, An-An Zhang¹, Ji-Long Li⁵, Jun-Yu Li^{1

4}, Yue Zhang^{1

2

3}, Teng Zhang^{1

3

4}, Rong Cao^{1

3

4}

Affiliations

¹ State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
² College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350117, P. R. China.
³ Fujian College, University of Chinese Academy of Sciences, Fuzhou 350002, P. R. China.
⁴ University of Chinese Academy of Sciences, Beijing 100049, P. R. China.
⁵ College of Chemistry, Fuzhou University, Fuzhou 350108, P. R. China.

PMID: 37224063
DOI: 10.1021/acs.inorgchem.3c01142

Abstract

A two-dimensional metal-organic framework, FICN-12, was constructed from tris[4-(1H-pyrazole-4-yl)phenyl]amine (H₃TPPA) ligands and Ni₂ secondary building units. The triphenylamine moiety in the H₃TPPA ligand readily absorbs UV-visible photons and sensitizes the Ni center to drive photocatalytic CO₂ reduction. FICN-12 can be exfoliated into monolayer and few-layer nanosheets with a "top-down" approach, which exposes more catalytic sites and increases its catalytic activity. As a result, the nanosheets (FICN-12-MONs) showed photocatalytic CO and CH₄ production rates of 121.15 and 12.17 μmol/g/h, respectively, nearly 1.4 times higher than those of bulk FICN-12.