Nickel hexacyanoferrate on nitrogen-rich CNTs: An efficient bi-functional catalyst for crystal violet removal and electrochemical urea oxidation

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-01-14 DOI:10.1016/j.materresbull.2025.113300

Maged N. Shaddad, Mshari A. Alotaibi, Abdulrahman I. Alharthi, Abdulaziz A. Alanazi

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Abstract

Herein, a novel material composed of nickel-iron Prussian blue (NFPB) incorporated on nitrogen-rich carbon nanotube (NFPB/NCNT) core/shell nanostructured is prepared by combining melamine and nitric acid with the subsequent thermal treatment (200–600 °C) of the as-synthesised N-rich CNTs and NFPB as a coating layer. This material exhibits excellent crystal violet (CV) removal from water and electrochemical urea oxidation reaction (UOR). The findings provide a simple method for efficiently modifying CNT bulk and surface. The NFPB/NCNT core/shell nanostructure removes 83 % CV in 5 min and achieves 99 % removal efficiency after 30 min, compared to 40 % and 21 % for NCNTs and bare CNTs. Additionally, it demonstrates excellent electrocatalytic activity in 1.0 M KOH and 0.33 M urea for the UOR, compared to bare CNTs. The high conformity of the coating (10–15 nm NFPB shell) and nitrogen-rich doping are responsible for the remarkable adsorption ability and electrochemical activity of CNT. This research is essential for developing environmentally acceptable materials for a more efficient bifunctional catalyst for removing organic dyes and electrochemical UOR from water.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.