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P-doped Co3S4/NiS2 ...
P-doped Co3S4/NiS2 heterostructures embedded in N-doped carbon nanoboxes: Synergistical electronic structure regulation for overall water splitting
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- Huang, Shoushuang (author)
- Shanghai Univ, Peoples R China
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- Ma, Shuzhen (author)
- Shanghai Univ, Peoples R China
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- Liu, Libin (author)
- Shanghai Univ, Peoples R China
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- Jin, Zhiqiang (author)
- Shanghai Univ, Peoples R China
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- Gao, Pengyan (author)
- Shanghai Univ, Peoples R China
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- Peng, Kaimei (author)
- Qiannan Normal Univ Nationalities, Peoples R China
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- Jiang, Yong (author)
- Shanghai Univ, Peoples R China
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- Naseri, Amene (author)
- Agr Res Educ & Extens Org AREEO, Iran
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- Hu, Zhang-Jun (author)
- Linköpings universitet,Molekylär ytfysik och nanovetenskap,Tekniska fakulteten
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- Zhang, Jiujun (author)
- Shanghai Univ, Peoples R China
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(creator_code:org_t)
- ACADEMIC PRESS INC ELSEVIER SCIENCE, 2023
- 2023
- English.
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In: Journal of Colloid and Interface Science. - : ACADEMIC PRESS INC ELSEVIER SCIENCE. - 0021-9797 .- 1095-7103. ; 652, s. 369-379
- Related links:
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https://liu.diva-por... (primary) (Raw object)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- Water splitting using transition metal sulfides as electrocatalysts has gained considerable attention in the field of renewable energy. However, their electrocatalytic activity is often hindered by unfavorable free energies of adsorbed hydrogen and oxygen-containing intermediates. Herein, phosphorus (P)-doped Co3S4/NiS2 hetero-structures embedded in N-doped carbon nanoboxes were rationally synthesized via a pyrolysis-sulfidation-phosphorization strategy. The hollow structure of the carbon matrix and the nanoparticles contained within it not only result in a high specific surface area, but also protects them from corrosion and acts as a conductive pathway for efficient electron transfer. Density functional theory (DFT) calculations indicate that the intro-duction of P dopants improves the conductivity of NiS2 and Co3S4, promotes the charge transfer process, and creates new electrocatalytic sites. Additionally, the NiS2-Co3S4 heterojunctions can enhance the adsorption efficiency of hydrogen intermediates (H*) and lower the energy barrier of water splitting via a synergistic effect with P-doping. These characteristics collectively enable the titled catalyst to exhibit excellent electrocatalytic activity for water splitting in alkaline medium, requiring only small overpotentials of 150 and 257 mV to achieve a current density of 10 mA cm-2 for hydrogen and oxygen evolution reactions, respectively. This work sheds light on the design and optimization of efficient electrocatalysts for water splitting, with potential implications for renewable energy production.
Subject headings
- NATURVETENSKAP -- Kemi -- Oorganisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Inorganic Chemistry (hsv//eng)
Keyword
- Prussian blue analogues; Sulfides; Heteroatom doping; Electrocatalysis; Heterojunctions
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Huang, Shoushuan ...
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Ma, Shuzhen
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Liu, Libin
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Jin, Zhiqiang
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Gao, Pengyan
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Peng, Kaimei
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show more...
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Jiang, Yong
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Naseri, Amene
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Hu, Zhang-Jun
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Zhang, Jiujun
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Inorganic Chemis ...
- Articles in the publication
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Journal of Collo ...
- By the university
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Linköping University