Publication detail

Effect of platinum nanoparticles on dissolved organic matter

ŘEZÁČOVÁ, V. ŠRAM, M. KOMENDOVÁ, R. KUČERÍK, J.

Original Title

Type

abstract

Language

English

Original Abstract

Nanoparticles (NPs), defined as particles 1-100 nanometers in length, can be classified as emerging pollutants. The impact of their presence on the environment is complex and of interest to various scientific fields. NPs fate and transport in the environment depend on material properties such as surface chemistry, particle size, and biological and abiotic processes in environmental media. Platinum (Pt) is widely used in a variety of areas (catalysis, medicine, etc.) due to its properties. Pt can therefore subsequently enter the environment, often in the form of nanoparticles. This work is focused on investigate the influence of heat/cool amplitude on structural changes of Dissolved Organic Matter (DOM) in the presence of platinum nanoparticles (Pt-NPs). For this purpose, we measured simultaneously the density and ultrasonic velocity of solutions of DOM, specifically six fulvic acids, with Pt-NPs. The measured values were used for the determination of the adiabatic compressibility, which reflects state of DOM physical structure. Recent studies have shown that heating and cooling cycles change the conformation of DOM. The cycles are followed by a slow structural relaxation [1]. Our results show that the presence of Pt-NPs prolongs the relaxation time, especially for fulvic acids with low aromaticity and higher aliphatic carbon content. This fact supports the hypothesis that in the Pt-NPs presence, aliphatic chains contribute more to the strength of the fulvic acids conformation than aromatic structures. [1] V. Řezáčová, P. Conte, R. Komendová, F. Novák, M. Repková, J. Kučerík, Ecotoxicol. Environ. Safety, 167 (2019) 422

Keywords

Pt nanomarticles, dissolved organic matter

Authors

ŘEZÁČOVÁ, V.; ŠRAM, M.; KOMENDOVÁ, R.; KUČERÍK, J.

Released

26. 7. 2022

Publisher

1st Central and Eastern European Conference on Physical Chemistry and Materials Science

Location

Split, Chorvatsko

ISBN

ISBN 978-606-11-8164

Book

CEEC-PCMS1 BOOK OF ABSTRACTS

Edition

1st Central and Eastern European Conference on Physical Chemistry and Materials Science

Pages from

119

Pages to

119

Pages count

234

URL

http://ceec-physchem.org/download.php?f=../download/BoA%20CEEC-PCMS1.pdf

BibTex

@misc{BUT179077,
  author="Veronika {Řezáčová} and Matěj {Šram} and Renata {Komendová} and Jiří {Kučerík}",
  title="Effect of platinum nanoparticles on dissolved organic matter",
  booktitle="CEEC-PCMS1 BOOK OF ABSTRACTS",
  year="2022",
  series="1st Central and Eastern European Conference on Physical Chemistry and Materials Science",
  pages="119--119",
  publisher="1st Central and Eastern European Conference on Physical Chemistry and Materials Science",
  address="Split, Chorvatsko",
  isbn="ISBN 978-606-11-8164",
  url="http://ceec-physchem.org/download.php?f=../download/BoA%20CEEC-PCMS1.pdf",
  note="abstract"
}