Tailoring surface morphology of heterostructured iron-based fenton catalyst for highly improved catalytic activity

Document Type

Journal Article

Publication Title

Journal of Colloid and Interface Science

Volume

581

First Page

860

Last Page

873

PubMed ID

32818686

Publisher

Elsevier

School

School of Engineering

RAS ID

32759

Funders

Alexander von Humboldt Foundation Research Fellowship for postdoctoral researchers Australian Research Council National Natural Science Foundation of China

Grant Number

ARC Number : DP130103592

Grant Link

http://purl.org/au-research/grants/arc/DP130103592

Comments

Liang, S. X., Zhang, Q., Jia, Z., Zhang, W., Wang, W., & Zhang, L. C. (2021). Tailoring surface morphology of heterostructured iron-based Fenton catalyst for highly improved catalytic activity. Journal of Colloid and Interface Science, 581(Part B), 860-873. https://doi.org/10.1016/j.jcis.2020.07.138

Abstract

© 2020 Elsevier Inc. Due to the great limitation of glass forming ability, precisely controlling the chemical compositions of metallic glasses (MGs) still dramatically inhibits their widespread applications in wastewater remediation. Here, heterostructured catalysts were exploited by rapid annealing of Fe-based MGs and subsequent ball milling (BM) as advanced alternatives for amorphous counterparts in Fenton-like process. It was found that the surface characteristics tailored by ball milling enable more chemically active sites due to its enlarged specific surface area, surface defects and nanosized amorphous oxide layer that significantly enhance surface-catalyzed reaction in Fenton-like process. On the other hand, high-temperature annealing induced grain growth and electrochemical potential difference induced effect of galvanic cells in multiple crystalline phases (e.g. α-Fe (Si), Fe2B and Fe3Si) further provide an important contribution to high efficiency of electron transfer in heterostructured catalysts. Since the multiphase heterostructure is easily formed by a high-temperature annealing of MGs/amorphous-crystalline composite alloys, this work aims to provide an advanced alternative of MG catalyst without the elemental limitation of glass forming ability for wastewater remediation.

DOI

10.1016/j.jcis.2020.07.138

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