Scalable Ir-Doped NiFe2O4/TiO2 Heterojunction Anode for Decentralized Saline Wastewater Treatment and H2 Production

Sukhwa Hong; Jiseon Kim; Jaebeom Park; Sunmi Im; Michael R. Hoffmann; Kangwoo Cho

doi:10.1007/s40820-024-01542-x

Nano-Micro Letters (Oct 2024)

Scalable Ir-Doped NiFe2O4/TiO2 Heterojunction Anode for Decentralized Saline Wastewater Treatment and H2 Production

Sukhwa Hong,
Jiseon Kim,
Jaebeom Park,
Sunmi Im,
Michael R. Hoffmann,
Kangwoo Cho

Affiliations

Sukhwa Hong: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)
Jiseon Kim: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)
Jaebeom Park: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)
Sunmi Im: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)
Michael R. Hoffmann: Linde Laboratory, California Institute of Technology
Kangwoo Cho: Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH)

DOI: https://doi.org/10.1007/s40820-024-01542-x
Journal volume & issue: Vol. 17, no. 1
pp. 1 – 18

Abstract

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Highlights Ir-doped NiFe2O4 (NFI) spinel with TiO2 heterojunction overlayer brought about outstanding chlorine evolution reaction in circumneutral pH. Electroanalyses including operando X-ray absorption spectroscopy uncovered the active role of TiO2 for Cl− chemisorption. NFI/TiO2 anode boosted both NH4 +-to-N2 conversion and H2 generation in wastewater, and the practical applicability was confirmed with scaled-up anodes and real wastewater.

Published in Nano-Micro Letters

ISSN: 2311-6706 (Print); 2150-5551 (Online)
Publisher: SpringerOpen
Country of publisher: Germany
LCC subjects: Technology
Website: http://www.springer.com/40820

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