NDLI: Removal of Chromium(VI) by Nanoscale Zero-Valent Iron Supported on Melamine Carbon Foam

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Removal of Chromium(VI) by Nanoscale Zero-Valent Iron Supported on Melamine Carbon Foam

Content Provider	MDPI
Author	Li, Qiming Liu, Meili Qiu, Xuchun Liu, Xiang Dapaah, Malcom Frimpong Niu, Qijian Cheng, Liang
Copyright Year	2022
Description	The overuse of chromium (Cr) has significantly negatively impacted human life and environmental sustainability. Recently, the employment of nano zero-valent iron (nZVI) for Cr(VI) removal is becoming an emerging approach. In this study, carbonized melamine foam-supported nZVI composites, prepared by a simple impregnation–carbonization–reduction method, were assessed for efficient Cr(VI) removal. The prepared composites were characterized by XPS, SEM, TEM, BET and XRD. Batch experiments at different conditions revealed that the amount of iron added, the temperature of carbonization and the initial Cr(VI) concentration were critical factors. Fe@MF-12.5-800 exhibited the highest removal efficiency of 99% Cr(VI) (10 mg/L) at neutral pH among the carbonized melamine foam-supported nZVI composites. Its iron particles were effectively soldered onto the carbonaceous surfaces within the pore networks. Moreover, Fe@MF-12.5-800 demonstrated remarkable stability (60%, 7 days) in an open environment compared with nZVI particles.
Starting Page	1866
e-ISSN	20794991
DOI	10.3390/nano12111866
Journal	Nanomaterials
Issue Number	11
Volume Number	12
Language	English
Publisher	MDPI
Publisher Date	2022-05-30
Access Restriction	Open
Subject Keyword	Nanomaterials Environmental Engineering Environmental Sciences Melamine Foam Nano Zero-valent Iron Cr(vi) Removal Safety Evaluation
Content Type	Text
Resource Type	Article

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