Preparation and characterization of ZnO nanoparticles from different precursors and their photocatalytic activity on Rhodamine B

Γώγου, Αλεξάνδρα; Gogou, Alexandra

dc.contributor.author	Γώγου, Αλεξάνδρα	el
dc.contributor.author	Gogou, Alexandra	en
dc.date.accessioned	2021-03-16T10:25:14Z
dc.date.available	2021-03-16T10:25:14Z
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/53059
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.20757
dc.description	Εθνικό Μετσόβιο Πολυτεχνείο--Μεταπτυχιακή Εργασία. Διεπιστημονικό-Διατμηματικό Πρόγραμμα Μεταπτυχιακών Σπουδών (Δ.Π.Μ.Σ.) “Επιστήμη και Τεχνολογία Υλικών”	el
dc.rights	Default License
dc.subject	ZnO	en
dc.subject	Nanoparticles	en
dc.subject	Rhodamine B	en
dc.subject	Semiconductors	en
dc.subject	Photocatalysis	en
dc.subject	Οξείδιο του ψευδαργύρου	el
dc.subject	Φωτοκατάλυση	el
dc.subject	Νανοσωματίδια	el
dc.subject	Ροδαμίνη Β	el
dc.subject	Ημιαγωγοί	el
dc.title	Preparation and characterization of ZnO nanoparticles from different precursors and their photocatalytic activity on Rhodamine B	en
heal.type	masterThesis
heal.classification	Materials Science	en
heal.classification	Materials Engineering	en
heal.classification	Επιστήμη των Υλικών	el
heal.classification	Nanoscience and nanotechnology	el
heal.language	en
heal.access	campus
heal.recordProvider	ntua	el
heal.publicationDate	2021-03-05
heal.abstract	Semiconductors photocatalysts, particularly ZnO nanoparticles, were synthesized from four different precursors (Zinc acetate/nitrate/sulfate/chloride) and afterwards they were compared according to their structural, morphological and photocatalytic properties. The used synthesis method was the precipitation method. The XRD patterns and the Raman spectra demonstrated a pure wurtzite structure, and the SEM images also confirmed a micro-nano crystalline structure of the produced ZnO crystalls. The DLS study proved that the sizes of the particles are in a range of 20- 45 nm, except the sample from the zinc sulfate precursor, which shows more dispersion. The BET results revealed that enahnced surface area was achived in the case of zinc acetate precursor sample and the FTIR spectra proved the purity of the produced powders. The photocatalysis was conducted under UV and visible light, using Rhodamine B as the pollutant. The adsorption progress of the pollutant was inspected by applying the UV-Visible technique every 30 minutes. It was observed that the highest photocatalysis efficiency was obtained by the nanoparticles that were prepared from the zinc nitrate and zinc acetate precursor materials. The nanoparticles that were produced from zinc chloride and zinc sulfate are less efficient and include more impurities. What is more, the size distribution of the nanoparticles is wider than of those created from zinc acetate and zinc nitrate.	en
heal.advisorName	Παυλάτου, Ευαγγελία	el
heal.committeeMemberName	Κυρίτσης, Απόστολος	el
heal.committeeMemberName	Κορδάτος, Κωνσταντίνος	el
heal.committeeMemberName	Παυλάτου, Ευαγγελία	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Χημικών Μηχανικών	el
heal.academicPublisherID	ntua
heal.numberOfPages	98 σ.	el
heal.fullTextAvailability	false