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

Anna Loiudice; Jason K. Cooper; Lucas H. Hess; Tracy M. Mattox; Ian D. Sharp; R. Buonsanti

doi:10.1021/acs.nanolett.5b03871

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

Anna Loiudice, Jason K. Cooper, Lucas H. Hess, Tracy M. Mattox, Ian D. Sharp, R. Buonsanti

Lawrence Berkeley National Laboratory

Research output: Contribution to journal › Article › peer-review

29 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	7347-7354
Number of pages	8
Journal	Nano Letters
Volume	15
Issue number	11
DOIs	https://doi.org/10.1021/acs.nanolett.5b03871
State	Published - 11 Nov 2015
Externally published	Yes

Keywords

Colloidal synthesis
assembly
charge dynamics
photoelectrochemistry
ternary oxides

Access to Document

10.1021/acs.nanolett.5b03871

Cite this

@article{acb2923bd0ad4495a7adc8da1779f317,

title = "Assembly and Photocarrier Dynamics of Heterostructured Nanocomposite Photoanodes from Multicomponent Colloidal Nanocrystals",

abstract = "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.",

keywords = "Colloidal synthesis, assembly, charge dynamics, photoelectrochemistry, ternary oxides",

author = "Anna Loiudice and Cooper, {Jason K.} and Hess, {Lucas H.} and Mattox, {Tracy M.} and Sharp, {Ian D.} and R. Buonsanti",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

month = nov,

day = "11",

doi = "10.1021/acs.nanolett.5b03871",

language = "English",

volume = "15",

pages = "7347--7354",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "11",

}

TY - JOUR

T1 - Assembly and Photocarrier Dynamics of Heterostructured Nanocomposite Photoanodes from Multicomponent Colloidal Nanocrystals

AU - Loiudice, Anna

AU - Cooper, Jason K.

AU - Hess, Lucas H.

AU - Mattox, Tracy M.

AU - Sharp, Ian D.

AU - Buonsanti, R.

PY - 2015/11/11

Y1 - 2015/11/11

N2 - 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.

AB - 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.

KW - Colloidal synthesis

KW - assembly

KW - charge dynamics

KW - photoelectrochemistry

KW - ternary oxides

UR - http://www.scopus.com/inward/record.url?scp=84946887548&partnerID=8YFLogxK

U2 - 10.1021/acs.nanolett.5b03871

DO - 10.1021/acs.nanolett.5b03871

M3 - Article

AN - SCOPUS:84946887548

SN - 1530-6984

VL - 15

SP - 7347

EP - 7354

JO - Nano Letters

JF - Nano Letters

IS - 11

ER -

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

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this