1 Ocak 2022 Dergi makalesi Açık Erişim

Celebi, Nuray; Salimi, Kouroush

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  "@id": 237664, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Ankara Yildirim Beyazit Univ, Fac Engn & Nat Sci, Dept Energy Syst Engn, Ankara, Turkey", 
      "name": "Celebi, Nuray"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Ankara Yildirim Beyazit Univ, Fac Engn & Nat Sci, Dept Chem Engn, Ankara, Turkey", 
      "name": "Salimi, Kouroush"
    }
  ], 
  "datePublished": "2022-01-01", 
  "description": "Herein, carbon-incorporated yolk-shell ZnO@C-CeO2 ternary heterostructures are employed as visible light responsive photocatalyst for highly efficient photoelectrochemical (PEC) water splitting. Compared to conventional ZnO/CeO2 semiconductors, introduction of a thin PDA shell layer assures the generation of a conductive N-doped graphitic carbon layer after a calcination post-treatment with mesoporous hollow morphologies. The evaluation of PEC water splitting performance of ZnO@C-CeO2 photoanodes reveals the maximum photocurrent density as 7.43 mA/cm(2) at 1.18 V RHE under light whereas almost no response is recorded at dark. These superior PEC H-2 evolution performance strongly implies efficient charge separation, facilitated charge transfer between photoanode and electrolyte inter-face as well as within the semiconductor bulk by means of rapid electron transfer ability of N-doped graphitic carbon layer and prolong life time of light inside yolk-shell structure. Furthermore, considerable depression in PL intensity of ZnO@C-CeO2 photoanodes compared to ZnO clearly reveals a higher photon absorption due to the reflection of light in hollow region and increase in electron hole separation effi-ciency. Moreover, plausible Z-scheme charge transfer mechanism using ZnO@C-CeO2 photoanodes under visible light illumination is verified using radical trapping experiments and X-ray photoelectron spectroscopy (XPS) methods, suggesting new generation of heterostructures for sufficient conversion of sun-light to H-2 fuels. (C) 2021 Elsevier Inc. All rights reserved.", 
  "headline": "Yolk-shell ZnO@C-CeO2 ternary heterostructures with conductive N-doped carbon mediated electron transfer for highly efficient water splitting", 
  "identifier": 237664, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "Yolk-shell ZnO@C-CeO2 ternary heterostructures with conductive N-doped carbon mediated electron transfer for highly efficient water splitting", 
  "url": "https://aperta.ulakbim.gov.tr/record/237664"
}