| Authors | Marzieh Simani - Hossein Dehghani |
|---|---|
| Journal | ACS Applied Energy Materials |
| Dor Code | https://doi.org/10.1021/acsaem.5c03726 |
| Presented by | University of Kashan |
| Volume number | 9 |
| Paper Type | Full Paper |
| Published At | 2026-02-18 |
| Journal Grade | ISI |
| Journal Type | Electronic |
| Journal Country | Iran, Islamic Republic Of |
| Journal Index | Scopus-JCR-ESI |
| Keywords | Marzieh Simani - Hossein Dehghani |
Abstract
Hydrogen is a promising source of noncarbon-based energy that is steadily replacing fossil fuels. As an alternative fuel, hydrogen production, its separation, and storage are critical components of advancing a global green energy economy. In this study, the syntheses and hydrogen sorption characteristics of three vanadium-based MOFs [MIL-47(V), MIL-88B(V), and MIL-101(V)] are presented. Additionally, graphene quantum dots (GQDs) having distinctive physiochemical properties were synthesized using a rapid, straightforward, and cost-effective technique and subsequently incorporated with MoS2 nanoparticles at varying molar ratios. The GQDs(0.4)/MoS2 electrode showed outstanding electrochemical hydrogen storage performance, achieving a maximum value of 9100 mAh g−1 after 20 cycles under a steady current of 1 mA, which represents a growth of more than 1.4 times in comparison with the pure MoS2 electrode. In addition, GQDs(0.4)/MoS2/MIL-101(V) nanocomposites are prepared and optimized via an environmentally friendly method at room temperature. The GQDs(0.4)/MoS2/MIL-101(V)-2 nanocomposites demonstrate superior electrochemical hydrogen storage efficiency, delivering a capacity of 10500 mAh g−1, nearly 1.2 times greater than the that for GQDs(0.4)/MoS2 nanoparticles and approximately 4.6 times higher than that of the MIL-101(V) framework. KEYWORDS: noncarbon-based energy, green energy economy, vanadium-based MOFs, electrochemical hydrogen storage, GQDs(0.4)/MoS2/MIL-101(V)-2 nanocomposites