Heme-like structure of iron-based photocatalyst mediate oxalic acid for simultaneous remediation of Cr(VI) and As(III)

The presence of carcinogenic heavy metals hexavalent chromium (Cr(VI)) and trivalent arsenic (As(III)) poses significant threats to human health and environmental safety. In order to address this issue, an iron-based photocatalyst with a heme-like structure (HMS-Fe) was developed. HMS-Fe combined with oxalic acid (OA) demonstrated effective removal of both Cr(VI) and As(III) under light condition. It converts highly toxic Cr(VI) into low-toxicity Cr(III) and oxidizes As(III) to more treatable As(V). Moreover, HMS-Fe demonstrates the same long-lasting, effective performance as commercial catalysts over multiple cycles. Overall, the simultaneous remediation of Cr(VI) and As(III) via Heme-like structure of iron-based photocatalyst provides an effective treatment for heavy metals in wastewater.

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Published
2025-09-19
DOI
https://doi.org/10.1117/12.3085358
Primary Topic
Arsenic contamination and mitigation
Type
article
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article

Heme-like structure of iron-based photocatalyst mediate oxalic acid for simultaneous remediation of Cr(VI) and As(III)

Song Xue, Zhi Xiang, Min Gan, Jianyu Zhu et al.
Arsenic contamination and mitigation
article

Heme-like structure of iron-based photocatalyst mediate oxalic acid for simultaneous remediation of Cr(VI) and As(III)

Song Xue, Zhi Xiang, Min Gan, Jianyu Zhu, Liang Zhang, Yong Du, Jiancheng Chen, Junwen Chen, Guangyu Tang, Zongman Jiang
article en

Abstract

The presence of carcinogenic heavy metals hexavalent chromium (Cr(VI)) and trivalent arsenic (As(III)) poses significant threats to human health and environmental safety. In order to address this issue, an iron-based photocatalyst with a heme-like structure (HMS-Fe) was developed. HMS-Fe combined with oxalic acid (OA) demonstrated effective removal of both Cr(VI) and As(III) under light condition. It converts highly toxic Cr(VI) into low-toxicity Cr(III) and oxidizes As(III) to more treatable As(V). Moreover, HMS-Fe demonstrates the same long-lasting, effective performance as commercial catalysts over multiple cycles. Overall, the simultaneous remediation of Cr(VI) and As(III) via Heme-like structure of iron-based photocatalyst provides an effective treatment for heavy metals in wastewater.

Central South University (CN), China Geological Survey (CN), Changjiang Water Resources Commission (CN), Shanghai Institute of Geological Survey (CN), China Institute of Geological Environmental Monitoring (CN)
National Natural Science Foundation of China, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection
Openalex Percentile: Top 78%
Arsenic contamination and mitigation
DOIOpen Access PDFOpenAlex
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Heme-like structure of iron-based photocatalyst mediate oxalic acid for simultaneous remediation of Cr(VI) and As(III) — Song Xue, Zhi Xiang, et al. · (2025) | TGRS Research Map | TGRS