Electrostatically assembling 2D hierarchical Nb2CTx and zifs-derivatives into Zn-Co-NC nanocage for the electrochemical detection of 4-nitrophenol

Facile synthesis of Ag/ZIF-8@ZIF-67 as an electrochemical sensing platform for sensitive detection of halonitrophenols in drinking water

“…As shown, three obvious redox peaks occurred at E values of −0.75 (R), 0.20 (O 1 ), and 0.19 V (R 1 ), of which O 1 and R 1 are couple of reversible redox peaks referring to an interconversion of 2,6-dichloro-4-hydroxylaminophenol and 2,6-dichloro-4-nitrosophenol. Also, reduction of 2,6-DCNP showed an intensely irreversible redox peak near E = −0.75 V, 58 which showed signicantly larger signals when using Ag/ZIF-8@ZIF-67 electrode than the others. The CV results of Ag/ZIF-8@ZIF-67 electrode without 2,6-DCNP in solution were shown in Fig.…”

In situ electrochemical synthesis of graphene-poly(arginine) composite for p-nitrophenol monitoring

“…Peak I at − 1200 mV is the irreversible reduction of nitrophenol. The reversible peak II at − 200 mV and peak III at − 170 mV represent the reduction of phydroxylaminophenol and p-nitrosophenol (Renu et al, 2021;Huang et al, 2021). Peak IV at 750 mV is attributed to the oxidation of the phenolic moiety of nitrophenol.…”

Double-Layer Carbon Encapsulated Co Particles Combined with Ionic Liquid for Enhancing Electrochemical Detection of Oxygen

“…Pt-based materials, as well known, are considered as the most active electrocatalysts for oxygen reduction. However, they are limitedly employed because of their scarcity and high cost. , Therefore, the transition-metal-containing nitrogen-doped carbon materials (M-N/Cs) are widely welcomed and show attractive ORR activity due to their large surface area, high electrical conductivity, and plentiful active sites. , The nitrogen-doped carbon materials encapsulated with metallic particles are well known for their high electrochemical activity and are effective oxygen reduction reaction (ORR) catalysts featuring a high surface area, rich M-N-C sites, and excellent electrochemical conductivity. , Therefore, they have been applied to numerous electrochemical fields like the production of oxidation catalysts and lithium ion batteries as well as electrochemical detection and gas sensing . In recent years, Co particles combined with nitrogen-doped carbon have been presented continually in diverse morphologies and structures.…”

“…44,45 The nitrogen-doped carbon materials encapsulated with metallic particles are well known for their high electrochemical activity and are effective oxygen reduction reaction (ORR) catalysts featuring a high surface area, rich M-N-C sites, and excellent electrochemical conductivity. 46,47 Therefore, they have been applied to numerous electrochemical fields like the production of oxidation catalysts 48 and lithium ion batteries 49 as well as electrochemical detection 50 and gas sensing. 51 In recent years, Co particles combined with nitrogen-doped carbon have been presented continually in diverse morphologies and structures.…”