Integration of gold nanoparticles into BiVO4/WO3 photoanodes via electrochromic activation of WO3 for enhanced photoelectrochemical water splitting

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F25%3A63594504" target="_blank" >RIV/70883521:28110/25:63594504 - isvavai.cz</a>

Alternative codes found

RIV/70883521:28610/25:63594504

Result on the web

<a href="https://pubs.acs.org/doi/10.1021/acsaem.4c02735" target="_blank" >https://pubs.acs.org/doi/10.1021/acsaem.4c02735</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsaem.4c02735" target="_blank" >10.1021/acsaem.4c02735</a>

Result language

angličtina

Original language name

Integration of gold nanoparticles into BiVO4/WO3 photoanodes via electrochromic activation of WO3 for enhanced photoelectrochemical water splitting

Original language description

The development of highly efficient photoanodes is crucial for enhancing the energy conversion efficiency in photoelectrochemical water splitting. Herein, we report an innovative approach to fabricating an Au/BiVO4/WO3 ternary junction that leverages the unique benefits of WO3 for efficient electron transport, BiVO4 for broadband light absorption, and Au nanoparticles (NPs) for surface plasmon effects. The BiVO4/WO3 binary junction was constructed by depositing a BiVO4 layer onto the surface of the WO3 nanobricks via consecutive drop casting. Au NPs were subsequently integrated into the BiVO4/WO3 structure through electrochromic activation of WO3. The optimal BiVO4 loading for the highest-performing BiVO4/WO3 heterostructure and the light intensity dependence of the photocurrent efficiency were also determined. Flat-band potential measurements confirmed an appropriate band alignment that facilitates electron transfer from BiVO4 to WO3, while work function measurements corroborated the formation of a Schottky barrier between the incorporated Au NPs and BiVO4/WO3, improving charge separation. The best-performing Au NP-sensitized BiVO4/WO3 photoanode thin films exhibited a photocurrent density of 0.578 mA cm-2 at 1.23 V vs RHE under AM 1.5G (1 sun) illumination and a maximum applied-bias photoconversion efficiency of 0.036% at 1.09 V vs RHE, representing an enhancement factor of 12 and 2.3 compared to those of pristine BiVO4 and WO3 photoanodes, respectively. This study presents a promising and scalable route for fabricating noble metal-sensitized, metal oxide-based nanocomposite photoanodes for solar water splitting.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/LTT20010" target="_blank" >LTT20010: Surface functionalized glass: Concept of heterostructured nanoparticles inspired by artificial photosynthesis</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

ACS Applied Energy Materials

ISSN

2574-0962

e-ISSN

—

Volume of the periodical

8

Issue of the periodical within the volume

7

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

4090-4102

UT code for WoS article

001455051000001

EID of the result in the Scopus database

2-s2.0-105003088302