In situ Raman monitoring of electroreductive dehalogenation of aryl halides at an Ag/aqueous solution interface

Abstract

The electroreductive dehalogenation as an efficient and green approach has attracted much attention in pollution remediation. Herein, we have employed shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS) technique to in situ probe...

Electrocatalytic dehalogenation in the applications of organic synthesis and environmental degradation

“…198,199 Zhou and Wang et al observed the electrochemical process of CTP and BTP on smooth Au electrode via SHINERS (Figure 15I). 121 The distinct Raman peaks (such as ν(C-Cl) at 1063 cm −1 , and ν(C-Br) at 1067 cm −1 ) identified the presence of CTP and BTP (Figure 15J,K). As the applied potential shifted negatively, the decreased intensities of ν(C-Cl) and ν(C-Br) and the emerging peaks illustrated the generation of TP and BPDT.…”

“…DFT calculation is also an important method to understand the adsorption behaviors of reactants on the catalyst surface, the surface charges of catalyst, the reaction pathways, and RDS in the reaction at atomic level. 121,200 Combining experimental data with theoretical calculations can helps validate experimental results and provides a more scientific understanding. Wang and co-workers reported the cobalt phthalocyanine molecules supported by multi-walled carbon nanotubes (CoPc/CNTs) for electrochemical converts of dichloroacetic acid (DCA) into ethylene.…”

“…Zhou et al. conducted the in situ Raman study on the electrocatalytic dehalogenation process of 4‐bromothiophenol (BTP) and 4‐chlorothiophenol (CTP) into a mixture of 4,4′‐biphenyldithiol (BPDT) and phenylthiol (TP) 121 . The value of the applied potentials for the cleavage of C‐Cl and C‐Br bonds in the solution pH of 7 were more positive than in pH of 1, illustrating the source of the higher dehalogenation activity in acidic solutions.…”

“…(J, K) The potential‐dependent Raman spectra of CTP and BTP. (I–K) Reproduced under terms of the CC‐BY license 121 . Copyright 2023, Royal Society of Chemistry.…”

“…DFT calculation is also an important method to understand the adsorption behaviors of reactants on the catalyst surface, the surface charges of catalyst, the reaction pathways, and RDS in the reaction at atomic level 121,200 . Combining experimental data with theoretical calculations can helps validate experimental results and provides a more scientific understanding.…”