Carbon nanotube grafted pyridinuim compound as a neutral ion-carrier of carbon paste electrode for sub-nanomolar simultaneous monitoring of Cu (II) and Hg (II)

Recent advances in nanomaterial-based solid-contact ion-selective electrodes

“…67 In recent years, nanocarbon-based paste, particularly CNT paste, has been introduced into ISEs, which have exhibited improved performance for ion sensing. 68–71 For example, Ramezani and co-workers 72 developed multi-walled carbon nanotube (MWCNT)-grafted 2,6-bis[2-(amino methyl)phenol]pyridine (BAPP) synthetic ligands as novel ion carriers and signal boosters in carbon paste for the simultaneous detection of Hg 2+ and Cu 2+ . The modified ISE displayed satisfactory reproducibility, with LODs of 2.0 × 10 −9 and 7.9 × 10 −10 mol L −1 for Hg 2+ and Cu 2+ , respectively.…”