Dissertation/ Thesis
Porous mesoscopic assemblies of spinel chalcogenide and transition metal phosphide nanoparticles for photocatalytic energy conversion applications ; Πορώδη μεσοσκοπικά δίκτυα νανοσωματιδίων χαλκογονιδίου σπινελίου και φωσφιδίου μετάλλου μετάπτωσης για εφαρμογές φωτοκαταλυτικής μετατροπής ενέργειας
| العنوان: | Porous mesoscopic assemblies of spinel chalcogenide and transition metal phosphide nanoparticles for photocatalytic energy conversion applications ; Πορώδη μεσοσκοπικά δίκτυα νανοσωματιδίων χαλκογονιδίου σπινελίου και φωσφιδίου μετάλλου μετάπτωσης για εφαρμογές φωτοκαταλυτικής μετατροπής ενέργειας |
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| المؤلفون: | Andreou, Evangelos, Ανδρέου, Ευάγγελος |
| بيانات النشر: | University of Crete (UOC) Πανεπιστήμιο Κρήτης |
| سنة النشر: | 2024 |
| المجموعة: | National Archive of PhD Theses (National Documentation Centre Greece) |
| مصطلحات موضوعية: | Ημιαγωγοί, Φωτοκατάλυση, Φωτοκαταλυτική παραγωγή υδρογόνου, Semiconductor, Photocatalysis, Photocatalytic hydrogen production, Χημεία, Φυσικές Επιστήμες, άλλοι τομείς, Chemical Sciences, Natural Sciences, Chemistry, miscellaneous |
| الوصف: | The persistent rise in fossil fuel consumption, driven by the need to satisfy current energy demands, poses a significant environmental hazard, primarily due to the substantial emissions of hazardous gases into the atmosphere. While it is evident that renewable energy sources must replace a significant portion of fossil fuels, existing renewable energy production methods often lack efficiency and still present environmental challenges. Photocatalytic water splitting for hydrogen production stands out as a low-cost technique, offering a high solar to chemical conversion efficiency while emitting zero hazardous gases. Over the last few decades, the research community has explored various photocatalysts, including metal oxides, chalcogenides, nitrides, and more. Despite considerable progress in the development of photocatalysts, current synthetic methods often fail to provide precise control over electrochemical properties, morphology, and size of particles, leading to subpar photocatalytic performance. In this dissertation, we introduce a new, cost-effective and environmentally friendly synthetic protocol for fabricating mesoporous networks of interconnected thiospinel nanocrystals, serving as versatile building blocks. This synthetic approach provides the advantage of controlling the size of the constituent inorganic nanocrystals, offering significant benefits for photocatalytic energy conversion applications. This control enables precise engineering of the optical and electronic properties of the resulting photocatalysts. Namely, employing a straightforward polymer-templated self-assembly process, the thiospinel nanocrystals are organized into three-dimensional (3D) mesoporous networks with large internal surface area and uniform mesopores. This structural arrangement leads to improved charge transfer kinetics and better intraparticle diffusion of the electrolyte. Given their advantageous characteristics, these mesoporous ensembles were investigated as potential photocatalysts for the water splitting reaction ... |
| نوع الوثيقة: | doctoral or postdoctoral thesis |
| اللغة: | English |
| Relation: | http://hdl.handle.net/10442/hedi/56844 |
| DOI: | 10.12681/eadd/56844 |
| الاتاحة: | http://hdl.handle.net/10442/hedi/56844 https://doi.org/10.12681/eadd/56844 |
| رقم الانضمام: | edsbas.F84F3A4F |
| قاعدة البيانات: | BASE |
| DOI: | 10.12681/eadd/56844 |
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