Photocatalytic hydrogen generation from a visible-light responsive metal-organic framework system: the impact of nickel phosphide nanoparticles

被引：97

作者：

Kampouri, Stavroula ^{[1
]}

Nguyen, Tu N. ^{[1
]}

Ireland, Christopher P. ^{[1
]}

Valizadeh, Bardiya ^{[1
]}

Ebrahim, Fatmah Mish ^{[1
]}

Capano, Gloria ^{[1
]}

Ongari, Daniele ^{[1
]}

Mace, Amber ^{[1
,2
]}

Guijarro, Nestor ^{[3
]}

Sivula, Kevin ^{[3
]}

Sienkiewicz, Andrzej ^{[4
]}

Forro, Laszlo ^{[4
]}

Smit, Berend ^{[1
]}

Stylianou, Kyriakos C. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne EPFL Valais, Inst Chem Sci & Engn ISIC, Rue Ind 17, CH-1951 Sion, Switzerland

[2] Stockholm Univ, Arrhenius Lab, Dept Mat & Environm Chem, Stockholm, Sweden

[3] Ecole Polytech Fed Lausanne, Inst Chem Sci & Engn ISIC, Stn 6, CH-1015 Lausanne, Switzerland

[4] Ecole Polytech Fed Lausanne, Inst Phys, Stn 3, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2018年 / 6卷 / 06期

基金：

欧洲研究理事会; 瑞士国家科学基金会; 瑞典研究理事会;

关键词：

HIGHLY EFFICIENT; EVOLUTION; WATER; REDUCTION; CATALYSTS; IRRADIATION; COCATALYST; SURFACE; NI2P;

D O I：

10.1039/c7ta10225a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, we report the performance of a photocatalytic system based on visible-light active MIL-125-NH2 mixed with nickel phosphide (Ni2P) nanoparticles. This combination boosts the H-2 evolution rate to an outstanding value of 894 mu mol h(-1) g(-1) under visible-light irradiation, which is among the highest H-2 evolution rates reported to date for metal-organic frameworks (MOFs). The H-2 generation rate exhibited by Ni2P/MIL-125-NH2 is almost 3 times higher than that of the Pt/MIL-125-NH2 system, highlighting the impact of the co-catalyst on photocatalytic water splitting. Additionally, our system outperforms the Ni2P/TiO2 system under UV-vis irradiation. The exceptional performance of Ni2P/MIL-125-NH2 is due to the efficient transfer of photogenerated electrons from MIL-125-NH2 to Ni2P, high intrinsic activity of Ni2P and exceptional synergy between them. This system exhibits the highest apparent quantum yields of 27.0 and 6.6% at 400 and 450 nm, respectively, ever reported for MOFs.

引用

页码：2476 / 2481

页数：6

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