2020
DOI: 10.1002/smll.202003361
|View full text |Cite|
|
Sign up to set email alerts
|

Regulation of Ferroelectric Polarization to Achieve Efficient Charge Separation and Transfer in Particulate RuO2/BiFeO3 for High Photocatalytic Water Oxidation Activity

Abstract: Exploiting spontaneous polarization of ferroelectric materials to achieve high charge separation efficiency is an intriguing but challenging research topic in solar energy conversion. This work shows that loading high work function RuO2 cocatalyst on BiFeO3 (BFO) nanoparticles enhances the intrinsic ferroelectric polarization by efficient screening of charges to RuO2 via RuO2/BFO heterojunction. This leads to enhancement of the surface photovoltage of RuO2/BFO single nanoparticles nearly 3 times, the driving f… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
4
1

Citation Types

0
24
0

Year Published

2022
2022
2024
2024

Publication Types

Select...
10

Relationship

1
9

Authors

Journals

citations
Cited by 58 publications
(24 citation statements)
references
References 56 publications
0
24
0
Order By: Relevance
“…Ferroelectric perovskites have also been an interesting class of nanomaterials for photocatalysis, since their internal electric field can be used to enhance electron–hole separation. , As a recent example, improved photocatalytic oxygen evolution activity has been reported using both bare ferroelectric (e.g., BaTiO 3 , BiFeO 3 , ) films and ferroelectric-supported catalysts, such as RuO 2 /BiFeO 3 . In these studies the heterostructure was used as a photoanode, where ferroelectric polarization enhanced the accumulation of photogenerated holes near the surface to facilitate water oxidation.…”
Section: Introductionmentioning
confidence: 99%
“…Ferroelectric perovskites have also been an interesting class of nanomaterials for photocatalysis, since their internal electric field can be used to enhance electron–hole separation. , As a recent example, improved photocatalytic oxygen evolution activity has been reported using both bare ferroelectric (e.g., BaTiO 3 , BiFeO 3 , ) films and ferroelectric-supported catalysts, such as RuO 2 /BiFeO 3 . In these studies the heterostructure was used as a photoanode, where ferroelectric polarization enhanced the accumulation of photogenerated holes near the surface to facilitate water oxidation.…”
Section: Introductionmentioning
confidence: 99%
“…Noble metal compounds such as RuO 2 have been initially used as the ideal anodic photocatalysts because of their excellent OER activity but are still limited due to their ultrahigh production cost. [3][4][5] The earth-abundant and non-precious metal oxides such as TiO 2 , WO 3 , a-Fe 2 O 3 , BiVO 4 , etc. are also widely studied for the anode materials.…”
Section: Introductionmentioning
confidence: 99%
“…Shah et al fabricated RuO 2 /BiFeO 3 heterojunction (Figure 7a and b), on which loading the RuO 2 cocatalyst with a high work function on BiFeO 3 nanoparticles enhanced the intrinsic polarization by efficient screening of charges to RuO 2 in RuO 2 /BFO heterojunction (Figure 7c). [56] The enhancement of ferroelectric properties of RuO 2 /BFO was attributed to the synergy of internal electric field of BFO for the primary separation of photogenerated charges and further regulation of separated charges to RuO 2 by the interfacial electric field generated by RuO 2 /BFO heterojunction, which provided synergetic effect to photocatalytic OER with achieving a quantum efficiency as high as 5.36 % at 560 nm. Utilizing the polar nature of ferroelectrics to develop composite semiconductors can form uniform hybrid structure to facilitate spatial distribution of active sites.…”
Section: Water Splittingmentioning
confidence: 99%