Nano-QSAR modeling for ecosafe design of heterogeneous TiO2-based nano-photocatalysts

Alicja Mikołajczyk , Agnieszka Gajewicz , Ewa Mulkiewicz , Bakhtiyor Rasulev , Martyna Marchelek , Magdalena Diak , Seishiro Hirano , Adriana Zaleska-Medynska , Tomasz Puzyn

Abstract

The human health and environmental risk assessment of engineered nanomaterials (NPs) is nowadays of high interest. It is important to assess and predict the biological activity, toxicity, physicochemical proper- ties, fate and transport of NPs. In this work, a combined experimental and computational study is performed in order to estimate the toxicity and develop a predictive model for heterogeneous NPs ( i.e. modified NPs, created from more than one type of NPs). Quantitative structure – activity relationship (QSAR) methods have not been yet adopted for predicting the toxicity/physicochemical properties of modified heterogeneous nanoparticles (so-called heterogeneous NPs). Since the main problem for nano-QSAR/ nano-QSPR modeling of heterogeneous NPs was a lack of appropriate descriptors that are able to ex- press the specific characteristics of 2nd generation NPs, we developed here a novel approach. The novel approach to encode heterogeneous NPs is based on the idea of additive descriptors for mixture systems previously applied only to mixtures of organic/inorganic compounds. Thus, based on the proposed novel approach, we have performed experimental and theoretical studies to develop nano-QSAR models de- scribing the cytotoxicity of 34 TiO 2 -based NPs modified by (poly)metallic clusters (Au, Ag, Pt) to the Chi- nese hamster ovary cell line. The models showed a good predictive ability and robustness. This approach can be used as an efficient tool for assessing the toxicity as well as physicochemical properties of unexplored heterogeneous NPs.
Author Alicja Mikołajczyk PChŚ
Alicja Mikołajczyk,,
- Laboratory of Environmental Chemometrics
, Agnieszka Gajewicz PChŚ
Agnieszka Gajewicz,,
- Laboratory of Environmental Chemometrics
, Ewa Mulkiewicz PAiDCh
Ewa Mulkiewicz,,
- Laboratory of Chemical Analytics and Diagnostics
, Bakhtiyor Rasulev
Bakhtiyor Rasulev,,
-
, Martyna Marchelek PFotokatalizy
Martyna Marchelek ,,
- Laboratory of Photocatalysis
, Magdalena Diak PFotokatalizy
Magdalena Diak,,
- Laboratory of Photocatalysis
, Seishiro Hirano
Seishiro Hirano,,
-
, Adriana Zaleska-Medynska PFotokatalizy
Adriana Zaleska-Medynska,,
- Laboratory of Photocatalysis
, Tomasz Puzyn PChŚ
Tomasz Puzyn,,
- Laboratory of Environmental Chemometrics
Journal seriesEnvironmental Science-Nano, ISSN 2051-8153
Issue year2018
Vol5
No5
Pages1150-1160
Publication size in sheets0.5
DOIDOI:10.1039/C8EN00085A
URL http://pubs.rsc.org/en/content/articlehtml/2018/en/c8en00085a
Languageen angielski
Score (nominal)40
ScoreMinisterial score = 40.0, 11-04-2018, ArticleFromJournal
Ministerial score (2013-2016) = 40.0, 11-04-2018, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 6.047 (2) - 2016=6.056 (5)
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