A single-atom cobalt integrated flexible sensor for simultaneous detection of dihydroxybenzene isomers

Abstract

Simultaneous detection of dihydroxybenzene isomers including hydroquinone (HQ), catechol (CC) and resorcinol (RS) is significant for water quality control due to their high toxicity and often coexist. However, it is...

Structure Regulation of Single‐atom Catalysts for Electrocatalytic Sensing

“…[89] Some studies have shown that the reactive oxygen species (ROS) can attack the Fe atom sites or [89] (b) Bending tests of the SAÀ Co/NG@C/PET sensor. [90] (c) CVs behaviors of Ni, Ni(OH) 2 , Ni/CB, Ni(OH) 2 /CB, CB and Ni-SAC for 2 mM H 2 O 2 . [91] (d) CVs obtained with GCEs modified with C 3 N 4 /CNT and Cu 1 /C 3 N 4 /CNT in the presence of 5 mM H 2 O 2 .…”

“…[102] And Co SACs can be further employed to construct electrochemical flexible sensors, such as the SAÀ Co/NG@C/PET strip can be used to simultaneous sensing of hydroquinone, catechol, and resorcinol with reliable repeatability and long-term stability (Figure 8b). [90] For the case of Ni SACs, H 2 O 2 can be generated on the surface of Ni-SAC graphite felt via a two-electron transfer of electrochemical ORR, and these H 2 O 2 can be rapidly transferred and monitored on the Ni-SAC based GCE. [91] There is different with four-electron ORR pathway, the NiOOH intermediate on single Ni site play an important role in the trace detection of H 2 O 2 in alkaline environments (Figure 8c).…”

“…(a) CV responses of Fe-based SACs, N-doped/NW, and GCE for H 2 O 2 [89]. (b) Bending tests of the SAÀ Co/NG@C/PET sensor [90]. (c) CVs behaviors of Ni, Ni(OH) 2 , Ni/CB, Ni(OH) 2 /CB, CB and Ni-SAC for 2 mM H 2 O 2 [91].…”