1 Ocak 2022 Dergi makalesi Açık Erişim

Celebi, Nuray; Salimi, Kouroush

Citation Style Language JSON

{
  "DOI": "10.1016/j.jcis.2021.07.052", 
  "abstract": "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.", 
  "author": [
    {
      "family": "Celebi", 
      "given": " Nuray"
    }, 
    {
      "family": "Salimi", 
      "given": " Kouroush"
    }
  ], 
  "container_title": "JOURNAL OF COLLOID AND INTERFACE SCIENCE", 
  "id": "237664", 
  "issued": {
    "date-parts": [
      [
        2022, 
        1, 
        1
      ]
    ]
  }, 
  "page": "23-32", 
  "title": "Yolk-shell ZnO@C-CeO2 ternary heterostructures with conductive N-doped carbon mediated electron transfer for highly efficient water splitting", 
  "type": "article-journal", 
  "volume": "605"
}