Synergistic Enhancement of Photocatalytic H<sub>2</sub> Evolution over NH<sub>2</sub>‑MIL-125 Modified with Dual\nCocatalyst
Jun-Qing Ye (17599495)Yan-Zi Dai (17599498)Shu-Ying Xu (9870233)Pin-Xi Wang (17599501)Zhong-Hua Sun (9640318)Jun-Feng Qian (3138987)Qian Liang (228504)Ming-Yang He (543900)Qun Chen (313764)
Abstract
The\nconstruction of efficient photocatalysts for water splitting\nto enable H<sub>2</sub> evolution is pivotal to alleviate energy issues\nand environmental concerns. In this work, carbon dots (CDs) were prepared\nby employing “green solvent” ionic liquids as carbon\nsources and then combined with Pt/NH<sub>2</sub>-MIL-125, resulting\nin the emergence of a high-efficiency photocatalyst termed CDs-Pt/NH<sub>2</sub>-MIL-125 for the first time. This composite photocatalyst\nexhibited outstanding photocatalytic activity in H<sub>2</sub> production\nunder visible light irradiation. Notably, the H<sub>2</sub> production\nrate of CDs<sub>100</sub>-Pt/NH<sub>2</sub>-MIL-125 reaches up to\n951.4 μmol/g/h, which was 3.1 times that of Pt/NH<sub>2</sub>-MIL-125. The characterization results indicate that CDs and Pt uniformly\ndispersed on the surface of NH<sub>2</sub>-MIL-125 and fabricated\na synergistic compact structure, providing a high BET surface area\n(985 m<sup>2</sup> g<sup>–1</sup>) and a suitable band gap.\nFurthermore, the distinctive embeddable-dispersed CDs and Pt, as dual\ncocatalyst, can harvest light and facilitate the transfer of photogenerated\nelectrons, thereby significantly augmenting the exploitation of visible\nlight. The plausible mechanism of photocatalytic H<sub>2</sub> evolution\nover the CDs-Pt/NH<sub>2</sub>-MIL-125 catalyst was also discussed.\nThis work introduces a promising strategy for designing high-performance\nCDs-MOFs-based photocatalysts, an innovative step toward achieving\nefficient photocatalytic water splitting for H<sub>2</sub> production.
Metrics
Topics
Related Documents
Synthesis, Structure and Photocatalytic Property of [Ni(en)<sub>2</sub>]{[Ni(en)<sub>2</sub>]<sub>2</sub>[Mo<sub>8</sub>V<sub>8</sub>O<sub>40</sub>(VO<sub>4</sub>)]}[(NH<sub>2</sub>)<sub>2</sub>(C<sub>2</sub>H<sub>4</sub>)<sub>2</sub>NH]<sub>2</sub>·2H<sub>2</sub>O
Optical Absorption Spectra of Mn<sup>2+</sup> in of (C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>CH<sub>2</sub>NH<sub>3</sub>)<sub>2</sub>-MnCl<sub>4</sub> and (NH<sub>2</sub>CH<sub>2</sub>CH<sub>2</sub>NH<sub>2</sub>)<sub>2</sub>-MnCl<sub>4</sub> Hybrid Compounds
Muneer Aziz SalehAgustinus Agung NugrohoKadek DewiA.R. SupandiDjulia OnggoHenning KühnP. H. M. van Loosdrecht
Equilibrium Studies on the System H<sub>2</sub>O-H<sub>2</sub>O<sub>2</sub>-CO(NH<sub>2</sub>)<sub>2</sub>-C<sub>3</sub>H<sub>8</sub>
Yu GaoJi Lin CaoPanpan ChenHong F. GuoZhao Yang Tan
Solubility of NH<sub>4</sub>VO<sub>3</sub> in NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub>-H<sub>2</sub>O and (NH<sub>4</sub>)<sub>3</sub>PO<sub>4</sub>-H<sub>2</sub>O Systems
Xu-Li GONGChang-Qiao ZHANGPeng-Ge NINGHong-Bin CAOYi Zhang
Influence of Hydrogen Bonding on the Assembly of Six-Membered Vanadium\nBorophosphate Cluster Anions: Synthesis and Structures of\n(NH<sub>4</sub>)<sub>2</sub>(C<sub>2</sub>H<sub>10</sub>N<sub>2</sub>)<sub>6</sub>[Sr(H<sub>2</sub>O)<sub>5</sub>]<sub>2</sub>[V<sub>2</sub>P<sub>2</sub>BO<sub>12</sub>]<sub>6</sub>·10H<sub>2</sub>O,\n(NH<sub>4</sub>)<sub>2</sub>(C<sub>3</sub>H<sub>12</sub>N<sub>2</sub>)<sub>6</sub>[Sr(H<sub>2</sub>O)<sub>4</sub>]<sub>2</sub>[V<sub>2</sub>P<sub>2</sub>BO<sub>12</sub>]<sub>6</sub>·17H<sub>2</sub>O, and\n(NH<sub>4</sub>)<sub>3</sub>(C<sub>4</sub>H<sub>14</sub>N<sub>2</sub>)<sub>4.5</sub>[Sr(H<sub>2</sub>O)<sub>5</sub>]<sub>2</sub>[Sr(H<sub>2</sub>O)<sub>4</sub>][V<sub>2</sub>P<sub>2</sub>BO<sub>12</sub>]<sub>6</sub>·10H<sub>2</sub>O
Junghwan Do (2102317)Ranko P. Bontchev (2425492)Allan J. Jacobson (1644922)