Amino-grafting functionalization of MIL-53(Al) via N₂:H₂ ECR plasma treatment
Abstract
The present study delves into the functionalization of the commercial Metal-Organic Framework (MOF) MIL-53(Al) using multi-dipolar electron cyclotron resonance (MDECR) plasma treatment under an N₂:H₂ gas mixture. The objective is to evaluate the potential of such plasma treatment to graft nitrogen-containing groups onto the organic linker of MIL-53(Al). To fulfill this objective, plasma diagnostics via optical emission spectroscopy (OES) and material characterization techniques such as FTIR and XPS are employed. OES was first used to determine the optimal N2:H2 condition that maximizes NH radical excitation, as these radicals are key reactive species that are potentially involved in the nitrogen functionalization mechanism. This optimal gas mixture condition was subsequently used during the plasma treatment of MIL-53(Al). A 1.6-fold enhancement of the N–H bonding signature was evidenced by FTIR, this increase being determined from the maximum peak intensity, thus highlighting the effectiveness of the MDECR treatment. XPS analysis of the treated material further confirmed the presence of chemically bonded nitrogen, indicating a nitrogen enrichment 4.7 times higher than that of the untreated material. These results conclusively demonstrate the successful functionalization of MIL-53(Al) through MDECR plasma treatment, opening new routes for post-functionalization processes of Metal-Organic Frameworks. This preliminary study will serve as a basis for future investigations into the potential of these materials as components for gas storage or filtration.
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BibTeX
@article{jeanmariedesiree2026aminografting,
title = {{Amino-grafting functionalization of MIL-53(Al) via N₂:H₂ ECR plasma treatment}},
author = {Ronny Jean-Marie-Desiree and Aymane Najah and Maria Teresa Teresa Izquierdo and Isabelle Royaud and Ludovic de Poucques and Vanessa Fierro and Stephane Cuynet and Gregory Marcos},
journal = {Materials Research Express},
year = {2026},
month = oct,
doi = {10.1088/2053-1591/aeb2a8},
url = {https://hal.science/hal-05793609v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Amino-grafting functionalization of MIL-53(Al) via N₂:H₂ ECR plasma treatment
AU - Ronny Jean-Marie-Desiree
AU - Aymane Najah
AU - Maria Teresa Teresa Izquierdo
AU - Isabelle Royaud
AU - Ludovic de Poucques
AU - Vanessa Fierro
AU - Stephane Cuynet
AU - Gregory Marcos
PY - 2026
DA - 2026/10/09
JO - Materials Research Express
DO - 10.1088/2053-1591/aeb2a8
UR - https://hal.science/hal-05793609v1
AB - The present study delves into the functionalization of the commercial Metal-Organic Framework (MOF) MIL-53(Al) using multi-dipolar electron cyclotron resonance (MDECR) plasma treatment under an N₂:H₂ gas mixture. The objective is to evaluate the potential of such plasma treatment to graft nitrogen-containing groups onto the organic linker of MIL-53(Al). To fulfill this objective, plasma diagnostics via optical emission spectroscopy (OES) and material characterization techniques such as FTIR and XPS are employed. OES was first used to determine the optimal N2:H2 condition that maximizes NH radical excitation, as these radicals are key reactive species that are potentially involved in the nitrogen functionalization mechanism. This optimal gas mixture condition was subsequently used during the plasma treatment of MIL-53(Al). A 1.6-fold enhancement of the N–H bonding signature was evidenced by FTIR, this increase being determined from the maximum peak intensity, thus highlighting the effectiveness of the MDECR treatment. XPS analysis of the treated material further confirmed the presence of chemically bonded nitrogen, indicating a nitrogen enrichment 4.7 times higher than that of the untreated material. These results conclusively demonstrate the successful functionalization of MIL-53(Al) through MDECR plasma treatment, opening new routes for post-functionalization processes of Metal-Organic Frameworks. This preliminary study will serve as a basis for future investigations into the potential of these materials as components for gas storage or filtration.
SN - 2053-1591
ER -