Review 2025 · 18 citations

MXene-based composites for enhanced photocatalytic Cr(VI) removal in wastewater: A comprehensive review

Fattah-alhosseini, Arash, Sangarimotlagh, Zahra, Dikici, Burak, Kaseem, Mosab

Abstract

The conversion of hazardous hexavalent chromium (Cr(VI)) to safer trivalent chromium (Cr(III)) is critical for mitigating industrial wastewater pollution. This review highlights the potential of photocatalytic technology in treating Cr(VI)-containing effluents, with a focus on MXenes-advanced 2D materials composed of transition metal carbides and carbonitrides. Among them, Ti3C2 MXene stands out for its high surface area, hydrophilic functional groups, and exceptional electrical conductivity, enabling rapid electron transfer and enhanced photocatalytic efficiency. Recent studies demonstrate Cr(VI) degradation rates of 80-100 % using MXene-based composites, primarily through mechanisms like Schottky barriers that improve electron mobility and reduce recombination rates. Particular attention is given to MXene composites combined with bismuth compounds, which exhibit enhanced performance due to synergistic effects. Despite these advancements, challenges remain regarding stability, reusability, and scalability. Future research should focus on developing innovative composites and addressing practical application challenges to fully harness MXene-based photocatalysts for environmental remediation.

Keywords

Photocatalytic MXene-based composites Heavy metal Toxic chromium Wastewater HETEROJUNCTION DEGRADATION CHROMIUM SPECTROSCOPY NANOSHEETS CATALYST

WoS Categories

Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering

Citation

Journal: JOURNAL OF ALLOYS AND COMPOUNDS
Year: 2025
Volume: 1015
ISSN: 0925-8388
eISSN: 1873-4669
DOI: 10.1016/j.jallcom.2025.178846
WoS UID: WOS:001421339700001

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