In Situ Synthesis Mechanism and Photocatalytic Performance of Cyano-Bridged Cu (I)/Cu (II) Ultrathin Nanosheets

Shixiong Li; Jiawei Qiang; Lifei Lu; Shaolong Yang; Yufeng Chen; Beiling Liao

doi:10.3389/fchem.2022.911238

In Situ Synthesis Mechanism and Photocatalytic Performance of Cyano-Bridged Cu (I)/Cu (II) Ultrathin Nanosheets

Front Chem. 2022 Jun 20:10:911238. doi: 10.3389/fchem.2022.911238. eCollection 2022.

Authors

Shixiong Li^{1

2}, Jiawei Qiang^{1

2}, Lifei Lu¹, Shaolong Yang^{1

2}, Yufeng Chen¹, Beiling Liao³

Affiliations

¹ School of Mechanical and Resource Engineering, Wuzhou University, Wuzhou, China.
² School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China.
³ School of Chemistry and Biological Engineering, Hechi University, Hechi, China.

Abstract

In situ synthesis of cyano-bridged Cu (I)/Cu (II) complexes usually requires organometallic catalysts or is carried out under high-temperature and high-pressure conditions. Herein, the cyano-bridged two-dimensional Cu (I)/Cu (II) photocatalyst, [Cu₂ (Py)₃(CN)₃]_n (1), is synthesized in situ at room temperature. The in situ synthesis mechanism of 1 shows that the partial Cu (II) complex catalyzed the C-C bond cleavage of 1,3-isophthalonitrile (L) to introduce -CN and generate Cu (I)/Cu (II). Its ultrathin nanosheets can be obtained by adding sodium dodecyl benzene sulfonate and performing ultrasonic synthesis in the process of synthesis 1. The ultrathin nanosheets of 1 have a lattice distance of about 0.31 nm, and it can rapidly decompose methylene blue (MB) (K = 0.25 mg L^-1 min^-1 at pH = 3). This research work is beneficial for in situ synthesis of cyano-bridged Cu (I)/Cu (II) complexes at room temperature and explores their synthesis and photocatalytic mechanism.

Keywords: Cu (I)/Cu (II); in situ synthesis; mechanism; nanosheets; photocatalyst.