XIV
h
International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
180
T1: P–47
Spectroscopic and antimicrobial characterisation of Ag, Cu, Zn
and combined bimetal exchanged zeolites
Roman Jędrzejczyk
1
, Anna Dziedzicka
2
, Damian Chlebda
3
, Łukasz Kuterasiński
2,4
,
Rafał Ważny
1
, Marta Śliwa
1
, and Przemysław Jodłowski
2
1
The Malopolska Centre of Biotechnology, Jagiellonian University, ul. Gronostajowa 7A, Kraków,
Poland, e-mail: roman.jedrzejczyk@uj.edu.pl
2
Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska
24, 30-155 Kraków, Poland
3
Faculty of Chemistry, Jagiellonian University, ul. Ingardena 3, 30-060 Kraków, Poland
4
Jerzy Haber Institute of Catalysis and Surface Chemistry Polish Academy of Sciences, ul.
Niezapominajek 8, 30-239 Cracow, Poland
Zeolites and zeolite based materials are biocompatible minerals which are commonly used in
a variety of antibacterial and antifungal applications. They may be also used as an effective
catalyst for Volatile Organic Compounds (VOCs) combustion. The main problem is that even
for catalytically active zeolites the antimicrobial application is rather limited due to the
migration of the ions or nanoparticles (NPs) to the surrounding environment. This fact can
eliminate the designed catalyst from the usage in such applications as food packaging, medicine,
clothing etc. This limitation will be more restricted because of the hot debate in the literature
dealing with the negative impact of NPs and metal ions on environment and human beings [1].
Therefore, there is a strong demand to find the best candidate for using as multifunctional
materials with catalytic and antimicrobial properties. Zeolites can be easily modified by
compounds which are able for complexing the ions and NPs such as EDTA [2]. In this study, we
tested the series of zeolite catalysts (one natural – clinoptylolite, and two synthesized – ZSM-5,
Y) in acetaldehyde, methane, n-nonan combustion and in the antimicrobial activity against
Mortierella alpina, Bacillus subtilis and Rhodothorula species. To determine the catalytic
activity of prepared samples, the in-situ DRIFT and photoacoustic IR spectroscopies as well as
CO and NH
3
sorption experiments were performed. The obtained antimicrobial results revealed,
that for the EDTA treated Ag
+
exchanged zeolites, the observed catalytic and microbial activity
was noticeably higher than for the bimetal Cu
2+
/Zn
2+
, untreated with EDTA. The tests of
catalytic activity also showed that the prepared catalyst are active in combustion VOC’s. As a
result, the best antimicrobial and catalytic activity was revealed by Cu/Zn/Ag based zeolites.
Keywords: zeolites; catalyst; antimicrobial activity
Acknowledgment
The Project was partly financed within National Centre for Research and Development – grant No
LIDER/204/L-6/14/NCBR/2015 and partially within 2015/17/D/ST8/01252 . The project was also
supported by the Malopolska Centre of Biotechnology.
References
[1] C. Marambio-Jones, EM V. Hoek, J. Nanoparticle Res. 12 (2010) 1531.
[2] E. Koohsaryan, M. Anbia, Chin. J. Catal. 37 (2016) 447.
XIV
h
International Conference on Molecular Spectroscopy, Białka Tatrzańska 2017
181
T1: P–48
IR spectroscopy in analysis of zeolite structures
obtained in hydrothermal conditions
Magdalena Król
1
1
Department of Silicate Chemistry and Macromolecular Compounds, Faculty of Materials Science
and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków,
Poland, e-mail: mkrol@agh.edu.pl
The aim of this work is selection of appropriate parameters of zeolite synthesis for a new
type of absorbent material obtained on the basis of expanded glass aggregates. The results of the
synthesis of zeolites from expanded glass aggregate using hydrothermal method were presented.
It was assumed that such granulate would be a composite of the zeolite phases characterized by
good sorption properties supported by durable amorphous structure.
It has been found that optimal process conditions, such as: NaOH and alumina source
concentrations, time and temperature, the zeolite granules with expected properties can be
obtained. Properties of resulting material have been detailed analyzed by means of XRD, SEM,
FT-IR, and TG/DSC studies. In particular, the structures of materials were examined using FT-
IR spectroscopy in the middle infrared range. Pseudolattice range, i.e. 800–400 cm
–1
, was
detailed analyzed. In this range, there are bands associated with the ring vibrations, which are
characteristic for zeolite structure. Depending on the time, temperature and NaOH
concentration, zeolite X, A, Na-P1 and hydroksysodalite as synthesis products in autogenous
pressure have been identified. In the experiments carried out in an autoclave, analcime,
phillipsite, zeolite Na-P1 and hydroksysodalite have formed.
Keywords: zeolite granulate; fly ash; alkali-activation; FTIR spectroscopy
Acknowledgment
This work was financially supported by the National Science Centre in Poland under grant no.
2016/21/D/ST8/01692.
References
[1] M. Król, A. Mikuła, Synthesis of the zeolite granulate for potential sorption application, Microporous
and Mesoporous Materials 243 (2017) 201.
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