Upcycling Nickel Ions into self-supported Electrocatalyst by using ZIF-8/Bacterial cellulose adsorbent

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Jian-Yu Wu
  • Tian Liu
  • Lin Ma
  • Wen-Wei Li

Detail(s)

Original languageEnglish
Article number107890
Journal / PublicationResources, Conservation & Recycling
Volume212
Online published6 Sept 2024
Publication statusPublished - Jan 2025

Abstract

Upcycling valuable metals from wastewater promises addressing the metal resource recycling and water pollution control issues simultaneously. In particular, upcycling Nickel (Ni) ions into electrocatalytic material has been proven a feasible route, but the current methods are still restricted by the complicated, environmentally-aggressive operation. Herein, we propose a low-cost, 3D-structured adsorbent, constructed by in-situ growing ZIF-8 on network-structured bacterial cellulose, for efficient Ni capture. It exhibits superior stability and 7.3-times higher Ni adsorption kinetics than the ZIF-8 alone. Importantly, the Ni-enriched adsorbent, after treatment of Ni-containing electroplating wastewater, could be pyrolytically converted into an efficient self-supported electrocatalyst for oxygen evolution reaction (OER), showing comparable OER activity to the state-of-the-art Ni-based electrode. This work provides a sustainable, facile route for Ni upcycling into self-supported electrode, which may be extended to recovery of various valuable metals from waste streams. © 2024 Elsevier B.V.

Research Area(s)

  • Adsorption, Bacterial cellulose, Self-supported electrocatalyst, Upcycling, ZIF-8