Effects of Carboxyl Functionalized CNT on Electrochemical Behaviour of Polyluminol-CNT Composites

The effect of carboxyl groups on the redox activity polyluminol-carbon nanotube composites was studied. Carboxyl were selected due to their known contributions toward surface wettability and pseudocapacitance while often present naturally derived low-cost porous carbons. Density functional theory (DFT) predicted energetically favoured bonding a significantly reduced band gap between luminol carboxylated graphene relative that bare graphene, suggesting improved charge storage for carbon substrates. prediction validated using nanotubes (CNTs) CNTs (COOH-CNTs) as substrates in situ chemical polymerized (CpLum). Surface morphological studies showed ca. 1.1 nm thick coating CpLum CNT (CpLum/CNT) 1.3 COOH-CNT (CpLum/COOH-CNT), analysis revealed 10% nitrogen from both CpLum/CNT CpLum/COOH-CNT. However, with merely 4.4% COOH functionalization, CpLum/COOH-CNT able store more (137.1 ± 17.1 C cm?3) (86.1 14.1 had increased retention over 5000 cycles. insights these can be used engineer carbons such ACs improve interfacial properties active materials composites.