Oxygen vacancies activating surface reactivity to favor charge separation and transfer in nanoporous BiVO4 photoanodes
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Jin, Sen; Ma, Xiaoxue; Pan, Jing; Zhu, Chongyang; Saji, Sandra; Hu, Jing-Guo; Xu, Xiao-Yong; Sun, Litao; Yin, Zongyou
Description
The sluggish catalytic reactivity on the surface of most semiconductors is a common obstacle in developing photo-electrochemical (PEC) electrodes. Loading cocatalysts becomes a plausible scenario but remains challenging in the integration with semiconductors due to the complicated interfacial issues. This work introduces an feasible strategy of activating surface reactivity, alternative to cocatalysis, in cooperating with semiconductor photoactivity to boost PEC performance. We apply an ionized...[Show more]
dc.contributor.author | Jin, Sen | |
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dc.contributor.author | Ma, Xiaoxue | |
dc.contributor.author | Pan, Jing | |
dc.contributor.author | Zhu, Chongyang | |
dc.contributor.author | Saji, Sandra | |
dc.contributor.author | Hu, Jing-Guo | |
dc.contributor.author | Xu, Xiao-Yong | |
dc.contributor.author | Sun, Litao | |
dc.contributor.author | Yin, Zongyou | |
dc.date.accessioned | 2022-10-19T03:45:28Z | |
dc.identifier.issn | 0926-3373 | |
dc.identifier.uri | http://hdl.handle.net/1885/275626 | |
dc.description.abstract | The sluggish catalytic reactivity on the surface of most semiconductors is a common obstacle in developing photo-electrochemical (PEC) electrodes. Loading cocatalysts becomes a plausible scenario but remains challenging in the integration with semiconductors due to the complicated interfacial issues. This work introduces an feasible strategy of activating surface reactivity, alternative to cocatalysis, in cooperating with semiconductor photoactivity to boost PEC performance. We apply an ionized argon plasma technology on three-dimensional (3D) nanoporous BiVO4 (BVO) to controllably generate surface oxygen vacancies, which enable surface activation favoring charge separation and transfer towards water oxidation reaction (WOR). A remarkable photocurrent density of 4.32 mA cm−2 is achieved at 1.23 V versus reversible hydrogen electrode (RHE) under AM 1.5 G illumination, which is a record among the reported single BVO photoanodes and even surpasses the performances of most cocatalyst-assisted ones. This study provides an alternative solution to sluggish catalytic kinetics on semiconductor photoelectrodes, thus paving a novel avenue to modulate cooperation with photoactivity in PEC technology. | |
dc.description.sponsorship | This work was supported by the National Natural Science Foundation of China (Nos. 11974303, 11674276 and 11774302), the ANU Futures Scheme (Q4601024), the Australian Research Council (DP190100295, LE190100014), and the Qing Lan Project of Jiangsu Province and the Talent Program of Yangzhou University | |
dc.format.mimetype | application/pdf | |
dc.language.iso | en_AU | |
dc.publisher | Elsevier | |
dc.rights | © 2020 Elsevier B.V | |
dc.source | Applied Catalysis B: Environmental | |
dc.subject | Bismuth vanadate | |
dc.subject | Photo-electrochemical water splitting | |
dc.subject | Surface reactivity | |
dc.subject | Charge kinetics | |
dc.title | Oxygen vacancies activating surface reactivity to favor charge separation and transfer in nanoporous BiVO4 photoanodes | |
dc.type | Journal article | |
local.description.notes | Imported from ARIES | |
local.identifier.citationvolume | 281 | |
dcterms.dateAccepted | 2020-08-23 | |
dc.date.issued | 2020-09-02 | |
local.identifier.ariespublication | a383154xPUB17305 | |
local.publisher.url | https://www.sciencedirect.com/ | |
local.type.status | Published Version | |
local.contributor.affiliation | Jin, Sen, Yangzhou University | |
local.contributor.affiliation | Ma, Xiaoxue, Yangzhou University | |
local.contributor.affiliation | Pan, Jing, Yangzhou University | |
local.contributor.affiliation | Zhu, Chongyang, Southeast University | |
local.contributor.affiliation | Saji, Sandra, OTH Other Departments, ANU | |
local.contributor.affiliation | Hu, Jing-Guo, Yangzhou University | |
local.contributor.affiliation | Xu, Xiaoyong, Yangzhou University | |
local.contributor.affiliation | Sun, Litao, Southeast University | |
local.contributor.affiliation | Yin, Zongyou, College of Science, ANU | |
local.description.embargo | 2099-12-31 | |
dc.relation | http://purl.org/au-research/grants/arc/DP190100295 | |
dc.relation | http://purl.org/au-research/grants/arc/LE190100014 | |
local.bibliographicCitation.startpage | 1 | |
local.bibliographicCitation.lastpage | 9 | |
local.identifier.doi | 10.1016/j.apcatb.2020.119477 | |
dc.date.updated | 2021-11-28T07:23:56Z | |
local.identifier.scopusID | 2-s2.0-85090033983 | |
Collections | ANU Research Publications |
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