مورد إلكتروني
Effect of Synthesis Method on Reaction Mechanism for Hydrogen Evolution over CuxOy/TiO2 Photocatalysts : A Kinetic Analysis
| العنوان: | Effect of Synthesis Method on Reaction Mechanism for Hydrogen Evolution over CuxOy/TiO2 Photocatalysts : A Kinetic Analysis |
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| بيانات النشر: | Uppsala universitet, Fysikalisk kemi Univ Naples Feder II, Dept Chem Mat & Ind Prod Engn, p le V Tecchio 80, I-80125 Naples, Italy. Univ Naples Feder II, Dept Chem Mat & Ind Prod Engn, p le V Tecchio 80, I-80125 Naples, Italy.;CSGI Ctr Colloid & Interface Sci, via Lastruccia 3, I-50019 Sesto Fiorentino, Italy. Polish Acad Sci, Inst Phys Chem, Kasprzaka 44-52, PL-01224 Warsaw, Poland. Univ Naples Feder II, Dept Chem Mat & Ind Prod Engn, p le V Tecchio 80, I-80125 Naples, Italy. CNR, Ist Sci & Tecnol Energia & Mobil Sostenibili STEMS, p le V Tecchio 80, I-80125 Naples, Italy. Univ Naples Feder II, Dept Chem Mat & Ind Prod Engn, p le V Tecchio 80, I-80125 Naples, Italy. Univ Naples Feder II, Dept Chem Mat & Ind Prod Engn, p le V Tecchio 80, I-80125 Naples, Italy. 2023 |
| تفاصيل مُضافة: | Clarizia, Laura Vitiello, Giuseppe Vadell, Robert Bericat Sá, Jacinto Marotta, Raffaele Di Somma, Ilaria Andreozzi, Roberto Luciani, Giuseppina |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The existing literature survey reports rare and conflicting studies on the effect of the preparation method of metal-based semiconductor photocatalysts on structural/morphological features, electronic properties, and kinetics regulating the photocatalytic H-2 generation reaction. In this investigation, we compare the different copper/titania-based photocatalysts for H-2 generation synthesized via distinct methods (i.e., photodeposition and impregnation). Our study aims to establish a stringent correlation between physicochemical/electronic properties and photocatalytic performances for H-2 generation based on material characterization and kinetic modeling of the experimental outcomes. Estimating unknown kinetic parameters, such as charge recombination rate and quantum yield, suggests a mechanism regulating charge carrier lifetime depending on copper distribution on the TiO2 surface. We demonstrate that H-2 generation photoefficiency recorded over impregnated CuxOy/TiO2 is related to an even distribution of Cu(0)/Cu(I) on TiO2, and the formation of an Ohmic junction concertedly extended charge carrier lifetime and separation. The outcomes of the kinetic analysis and the related modeling investigation underpin photocatalyst physicochemical and electronic properties. Overall, the present study lays the groundwork for the future design of metal-based semiconductor photocatalysts with high photoefficiencies for H-2 evolution. |
| مصطلحات الفهرس: | photocatalysis, hydrogen production, kinetic modeling, CuxOy, TiO2, Ohmic junction, long-lived charge-separated state, charge carrier recombination, Physical Chemistry, Fysikalisk kemi, Article in journal, info:eu-repo/semantics/article, text |
| DOI: | 10.3390.ijms24032004 |
| URL: | International Journal of Molecular Sciences, 1661-6596, 2023, 24:3 |
| الإتاحة: | Open access content. Open access content info:eu-repo/semantics/openAccess |
| ملاحظة: | application/pdf English |
| أرقام أخرى: | UPE oai:DiVA.org:uu-498890 0000-0003-2124-9510 0000-0002-0548-7087 doi:10.3390/ijms24032004 PMID 36768327 ISI:000931062900001 1376537208 |
| المصدر المساهم: | UPPSALA UNIV LIBR From OAIster®, provided by the OCLC Cooperative. |
| رقم الأكسشن: | edsoai.on1376537208 |
| قاعدة البيانات: | OAIster |
| DOI: | 10.3390.ijms24032004 |
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