Porphyrin-Based Covalent Organic Polymer Wrapped MWCNT Electrodes under Moderate Salt Concentration for Super-Stable Aqueous Sodium-Ion Intercalated Sustainable Supercapacitor.

To rival commercial organic electrolytes, it is important to focus on safe, cheap aqueous electrolytes with lower salt concentration (≈5.0 m) and a wider electrochemical stable potential window (ESPW). This study reports the facile synthesis of porphyrin-based covalent organic polymers (PTZ-COP, CBZ-COP, and TPA-COP) through a one-pot aromatic electrophilic polycondensation reaction between pyrrole and monomeric aldehydes (PTZ-CHO, CBZ-CHO and TPA-CHO).

Electrocatalysis Using Cobalt Porphyrin Covalently Linked with Multi-Walled Carbon Nanotubes: Hydrazine Sensing and Hydrazine-Assisted Green Hydrogen Synthesis.

Acid-treated multi-walled carbon nanotube (MWCNT) covalently functionalized with cobalt triphenothiazine porphyrin (CoTriPTZ-OH) AB type porphyrin, containing three phenothiazine moieties (represented as MWCNT-CoTriPTZ) is synthesized and characterized by various spectroscopic and microscopic techniques. The nanoconjugate, MWCNT-CoTriPTZ, exhibits a pair of distinct redox peaks due to the Co/Co redox process in 0.1 M pH 7.

Co(II) Porphyrin-MWCNT Nanoconjugate as an Efficient and Durable Electrocatalyst for Oxygen Reduction Reaction.

Recently, researchers are seeking alternatives to replace Pt-based oxygen reduction reaction (ORR) catalysts used in fuel cells due to their high cost and certain stability and selectivity issues. For this purpose, we have synthesized a nanoconjugate, cobalt(II) porphyrin (5,10,15-triphenyl-20-(4-aminophenyl)porphyrinatocobalt(II), CoTPP-NH) covalently attached to the acid-functionalized multiwalled carbon nanotubes and characterized by various techniques including UV-vis spectroscopy, FTIR, TGA, FESEM, TEM, and Raman spectroscopy. The oxygen reduction performance of the nanoconjugate is checked in basic medium.