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Bespoke selenium nanowires with comprehensive piezo-phototronic effects as viable p-type semiconductor-based piezo-photocatalysts
- Title
- Bespoke selenium nanowires with comprehensive piezo-phototronic effects as viable p-type semiconductor-based piezo-photocatalysts
- Authors
- Kim M.; Kwon J.; Lee H.J.; Park K.S.; Kim J.; Baek K.; Yuan H.; Hyun J.K.; Cho Y.S.; Yeom J.; Kim D.H.
- Ewha Authors
- 김동하
- SCOPUS Author ID
- 김동하
- Issue Date
- 2023
- Journal Title
- Nano Energy
- ISSN
- 2211-2855
- Citation
- Nano Energy vol. 114
- Keywords
- Electron-proton co-doping; Piezo-photocatalysis; Piezo-phototronic effect; Selenium nanowire; Surface plasmon resonance
- Publisher
- Elsevier Ltd
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- As the demand for environmental purification and energy harvesting continues to grow, research on maximizing the efficiency of catalysts is attracting great attention. The piezo-phototronic effect has emerged as an effective strategy to enhance the photocatalytic activity of semiconductors. While p-type semiconductors exhibit high photoresponsivity across a wide spectral range, their potential as piezo-photocatalysts has been limited due to their low carrier concentration and inferior carrier migration behavior. Therefore, it is hypothesized that overcoming these limitations would allow p-type semiconductors to achieve catalytic performance comparable to, or even surpassing, that of n-type systems. Here, we introduce two effective strategies into p-type trigonal selenium nanowires (Se NWs): electron-proton co-doping and localized surface plasmon resonance effect. These approaches improve the light absorption capacity, charge transport ability, and piezoelectricity, thereby significantly enhancing the piezo-photocatalytic performance. Under the influence of the piezo-phototronic effect, the post-treated Se NWs exhibit markedly enhanced evolution rates of reactive oxygen species compared to pure Se NWs. Consequently, the degradation efficiency of organic contaminants is increased up to 4-fold. This breakthrough opens up a new pathway for the development of p-type piezoelectric materials, which can potentially replace their n-type counterparts in catalytic applications. © 2023
- DOI
- 10.1016/j.nanoen.2023.108680
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
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