Importance of energy band theory and screening charge effect in piezo-electrocatalytical processes

Franziska Bößl; Valentin C. Menzel; Karina Jeronimo; Ayushi Arora; Yishu Zhang; Tim P. Comyn; Peter Cowin; Caroline Kirk; Neil Robertson; Ignacio Tudela

doi:10.1016/j.electacta.2023.142730

Importance of energy band theory and screening charge effect in piezo-electrocatalytical processes

Franziska Bößl^*, Valentin C. Menzel, Karina Jeronimo, Ayushi Arora, Yishu Zhang, Tim P. Comyn, Peter Cowin, Caroline Kirk, Neil Robertson, Ignacio Tudela

^*Corresponding author for this work

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

Abstract / Description of output

The present study tries to shed more light on the controversial discussion around the ‘true’ mechanism behind piezo-electrocatalysis: energy band theory or screening charge effects. For this purpose, piezo-electrocatalysts made of three different materials with different energy band levels and piezoelectric properties, ZnO, BaTiO₃ and BF-KBT-PT, were used to degrade Rhodamine B in aqueous solutions where combined ultrasound and mechanical agitation was used as the excitation method. The results suggest that both mechanisms may actually play an important role in the overall process, as the largest overall dye degradation was achieved with the piezo-electrocatalyst most likely to generate radicals via both piezo-electrocatalytic mechanisms.

Original language	English
Article number	142730
Journal	Electrochimica Acta
Volume	462
Early online date	16 Jun 2023
DOIs	https://doi.org/10.1016/j.electacta.2023.142730
Publication status	E-pub ahead of print - 16 Jun 2023

Keywords / Materials (for Non-textual outputs)

Energy band theory
Piezo-electrocatalysis
Piezocatalysis
Screen charge effect
Sonocatalysis
Sonochemistry

Access to Document

10.1016/j.electacta.2023.142730

20230610RobertsonjelectactaVoRFinal published version, 7.44 MBLicence: CC BY-NC-ND

https://www.sciencedirect.com/science/article/pii/S0013468623009088

Cryo-FIB-SEM-CT: A ‘three-in-one’ Imaging Facility For Opaque Soft Matter
Poon, W., Gregoryanz, E., Mcwilliams, S., Royer, J. & Thijssen, J.
EPSRC
1/04/17 → 31/03/18
Project: Research

Cite this

@article{ba9427eae3034aaa9725646c0619719f,

title = "Importance of energy band theory and screening charge effect in piezo-electrocatalytical processes",

abstract = "The present study tries to shed more light on the controversial discussion around the {\textquoteleft}true{\textquoteright} mechanism behind piezo-electrocatalysis: energy band theory or screening charge effects. For this purpose, piezo-electrocatalysts made of three different materials with different energy band levels and piezoelectric properties, ZnO, BaTiO3 and BF-KBT-PT, were used to degrade Rhodamine B in aqueous solutions where combined ultrasound and mechanical agitation was used as the excitation method. The results suggest that both mechanisms may actually play an important role in the overall process, as the largest overall dye degradation was achieved with the piezo-electrocatalyst most likely to generate radicals via both piezo-electrocatalytic mechanisms.",

keywords = "Energy band theory, Piezo-electrocatalysis, Piezocatalysis, Screen charge effect, Sonocatalysis, Sonochemistry",

author = "Franziska B{\"o}{\ss}l and Menzel, {Valentin C.} and Karina Jeronimo and Ayushi Arora and Yishu Zhang and Comyn, {Tim P.} and Peter Cowin and Caroline Kirk and Neil Robertson and Ignacio Tudela",

note = "Funding Information: FB and IT acknowledge the University of Edinburgh for funding this research through its Start Up fund. The authors acknowledge the use of the Zeiss Crossbeam 550 FIB-SEM funded with EPSRC grant EP/P030564/1 , and would like to thank Dr Thomas Glenn and Dr Fraser Laidlaw at the University of Edinburgh for their kind support in FIB-SEM analysis. The authors would also like to thank Dr Stephen Francis at the University of St Andrews for his support with XPS analysis. Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

month = jun,

day = "16",

doi = "10.1016/j.electacta.2023.142730",

language = "English",

volume = "462",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier",

}

TY - JOUR

T1 - Importance of energy band theory and screening charge effect in piezo-electrocatalytical processes

AU - Bößl, Franziska

AU - Menzel, Valentin C.

AU - Jeronimo, Karina

AU - Arora, Ayushi

AU - Zhang, Yishu

AU - Comyn, Tim P.

AU - Cowin, Peter

AU - Kirk, Caroline

AU - Robertson, Neil

AU - Tudela, Ignacio

N1 - Funding Information: FB and IT acknowledge the University of Edinburgh for funding this research through its Start Up fund. The authors acknowledge the use of the Zeiss Crossbeam 550 FIB-SEM funded with EPSRC grant EP/P030564/1 , and would like to thank Dr Thomas Glenn and Dr Fraser Laidlaw at the University of Edinburgh for their kind support in FIB-SEM analysis. The authors would also like to thank Dr Stephen Francis at the University of St Andrews for his support with XPS analysis. Publisher Copyright: © 2023 The Authors

PY - 2023/6/16

Y1 - 2023/6/16

N2 - The present study tries to shed more light on the controversial discussion around the ‘true’ mechanism behind piezo-electrocatalysis: energy band theory or screening charge effects. For this purpose, piezo-electrocatalysts made of three different materials with different energy band levels and piezoelectric properties, ZnO, BaTiO3 and BF-KBT-PT, were used to degrade Rhodamine B in aqueous solutions where combined ultrasound and mechanical agitation was used as the excitation method. The results suggest that both mechanisms may actually play an important role in the overall process, as the largest overall dye degradation was achieved with the piezo-electrocatalyst most likely to generate radicals via both piezo-electrocatalytic mechanisms.

AB - The present study tries to shed more light on the controversial discussion around the ‘true’ mechanism behind piezo-electrocatalysis: energy band theory or screening charge effects. For this purpose, piezo-electrocatalysts made of three different materials with different energy band levels and piezoelectric properties, ZnO, BaTiO3 and BF-KBT-PT, were used to degrade Rhodamine B in aqueous solutions where combined ultrasound and mechanical agitation was used as the excitation method. The results suggest that both mechanisms may actually play an important role in the overall process, as the largest overall dye degradation was achieved with the piezo-electrocatalyst most likely to generate radicals via both piezo-electrocatalytic mechanisms.

KW - Energy band theory

KW - Piezo-electrocatalysis

KW - Piezocatalysis

KW - Screen charge effect

KW - Sonocatalysis

KW - Sonochemistry

U2 - 10.1016/j.electacta.2023.142730

DO - 10.1016/j.electacta.2023.142730

M3 - Article

AN - SCOPUS:85163202556

SN - 0013-4686

VL - 462

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 142730

ER -

Importance of energy band theory and screening charge effect in piezo-electrocatalytical processes

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

Access to Document

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Cryo-FIB-SEM-CT: A ‘three-in-one’ Imaging Facility For Opaque Soft Matter

Cite this