Vpliv reakcijskih parametrov na lastnosti cink-kromovih plastovitih dvojnih hidroksidov

diplomsko delo

Jošt Vodušek (Author), Romana Cerc Korošec (Mentor)

Abstract

Namen diplomske naloge je bila sinteza in karakterizacija Zn-Cr plastovitih dvojnih hidroksidov (LDH) pri različnih sinteznih pogojih. LDH materiali so zanimivi zaradi svoje enostavne priprave in široke uporabnosti, zlasti pri odstranjevanju organskih onesnaževal iz vodnih raztopin s sorpcijo ali fotokatalizo. V okviru naloge sem z metodo soobarjanja sintetiziral Zn-Cr LDH pri vrednostih pH 6,0, 7,0, 8,0 in 9,0. Pri pH 6,0 sem izvedel tudi ponovitev sinteze, ki ji je sledila dodatna hidrotermalna obdelava. Vse dobljene vzorce sem nato termično obdelal, s čimer sem pripravil mešane okside. Vse pripravljene produkte sem karakteriziral z rentgensko praškovno difrakcijo (XRD) in termogravimetrično analizo, sklopljeno z masno spektrometrijo (TG-MS). Preučil sem njihove sorpcijske sposobnosti v raztopini barvila Plasmocorinth B, medtem ko sem fotokatalitske lastnosti ovrednotil za termično obdelane vzorce. Najbolj kristaliničen in najbolj učinkovit sorbent je hidrotermalno obdelani Zn-Cr LDH, sintetiziran pri pH 6,0.

Keywords

plastoviti dvojni hidroksidi;gline;soobarjanje;hidrotermalna sinteza;sorpcija;diplomska dela;

Data

Language:	Slovenian
Year of publishing:	2025
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FKKT - Faculty of Chemistry and Chemical Technology
Publisher:	[J. Vodušek]
UDC:	620.1(043.2)
COBISS:	243709187
Views:	100
Downloads:	46
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	The influence of reaction parameters on the properties of zinc-chromium layered double hydroxides
Secondary abstract:	The aim of this thesis was the synthesis and characterization of Zn-Cr layered double hydroxides (LDHs) under different synthesis conditions. LDH materials are of great interest due to their ease of preparation and wide applicability, especially in the removal of organic pollutants from aqueous solutions by sorption or photocatalysis. In this work, Zn-Cr LDHs were synthesized using a coprecipitation method at pH values of 6.0, 7.0, 8.0 and 9.0. Repeated synthesis was carried out at pH 6.0 followed by additional hydrothermal treatment. All synthesised samples were then thermally treated to obtain mixed metal oxides. The final products were characterized using X-ray powder diffraction (XRD) and thermogravimetric analysis coupled with mass spectrometry (TGMS). The sorption capacities of the samples were evaluated with a solution of Plasmocorinth B dye, while their photocatalytic properties were investigated on the thermally treated samples. The most crystalline and most efficient sorbent is the hydrothermally treated Zn-Cr LDH synthesized at pH 6.0.
Secondary keywords:	layered double hydroxide;photocatalysis;sorption;Fotokataliza;Materiali;Univerzitetna in visokošolska dela;
Type (COBISS):	Bachelor thesis/paper
Study programme:	1000374
Thesis comment:	Univ. v Ljubljani, Fak. za kemijo in kemijsko tehnologijo, VSŠ Kemijska tehnologija
Pages:	1 spletni vir (1 datoteka PDF (37 str.))
ID:	26733393