Assembly and Photocarrier Dynamics of Heterostructured Nanocomposite Photoanodes from Multicomponent Colloidal Nanocrystals

被引：28

作者：

Loiudice, Anna ^{[1
,2
]}

Cooper, Jason K. ^{[1
,2
]}

Hess, Lucas H. ^{[1
,2
]}

Mattox, Tracy M. ^{[3
]}

Sharp, Ian D. ^{[1
,4
]}

Buonsanti, R. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Joint Ctr Artificial Photosynth, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Mol Foundry, Berkeley, CA 94720 USA

[4] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

来源：

NANO LETTERS | 2015年 / 15卷 / 11期

关键词：

Colloidal synthesis; ternary oxides; assembly; photoelectrochemistry; charge dynamics; EFFICIENT LIGHT-ABSORPTION; PHOTOCATALYTIC PROPERTIES; PHOTOGENERATED HOLES; CHARGE SEPARATION; BIVO4; PHOTOANODES; WATER OXIDATION; SOLAR; CONVERSION; TRANSPORT; ROUTE;

D O I：

10.1021/acs.nanolett.5b03871

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multicomponent oxides and their heterostructures are rapidly emerging as promising light absorbers to drive oxidative chemistry. To fully exploit their functionality, precise tuning of their composition and structure is crucial. Here, we report a novel solution-based route to nanostructured bismuth vanadate (BiVO4) that facilitates the assembly of BiVO4/metal oxide (TiO2, WO3, and Al2O3) nanocomposites in which the morphology of the metal oxide building blocks is finely tailored. The combination of transient absorption spectroscopy spanning from picoseconds to second time scales-and photoelectrochemical measurements reveals that the achieved structural tunability is key to understanding and directing charge separation, transport, and efficiency in these complex oxide heterostructured films.

引用

页码：7347 / 7354

页数：8

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