Plasmonic Photocatalysis of Urea Oxidation and Visible-Light Fuel Cells

被引：43

作者：

An, Xingda ^{[1
,2
]}

Stelter, David ^{[1
]}

Keyes, Tom ^{[1
]}

Reinhard, Bjorn M. ^{[1
,2
]}

机构：

[1] Boston Univ, Dept Chem, 590 Commonwealth Ave, Boston, MA 02215 USA

[2] Boston Univ, Photon Ctr, Boston, MA 02215 USA

来源：

CHEM | 2019年 / 5卷 / 08期

基金：

美国国家科学基金会;

关键词：

STEERED MOLECULAR-DYNAMICS; CHEMICAL ENERGY; HOT CARRIERS; SOLAR-CELL; METAL; NANOPARTICLES; FLUORESCENCE; CONVERSION; SIZE; ABSORPTION;

D O I：

10.1016/j.chempr.2019.06.014

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The intense electric (E-) field associated with the localized surface plasmon resonance (LSPR) of noble-metal nanoantennas provides a rational strategy for enhancing photoinduced charge transfer in photocatalysts. Here, we demonstrate E-field-enhanced direct photocatalytic urea oxidation and a visible-light-driven direct urea fuel cell (LDUFC) with tris(bipyridine)ruthenium(II) ([Ru(bpy)(3)](2+))-enabled plasmonic nanopigments that contain a phospholipid membrane self-assembled around a Ag nanoparticle (NP) whose LSPR overlaps the [Ru(bpy)(3)](2+) metal-to-ligand charge transfer (MLCT). In the hierarchical plasmonic nanopigment design, the membrane serves as scaffold and spacer to localize [Ru(bpy)(3)](2+) in an electromagnetic "sweet spot" where substantial plasmonic enhancement of photoexcitation is achieved while strong metal-associated quenching of the reactive excited state is avoided. The demonstration of plasmon-enhanced photocatalytic urea oxidation and the implementation of the LDUFC represent important advancements toward improved light-driven waste-water treatment and efficient solar energy conversion.

引用

页码：2228 / 2242

页数：15

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