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Synthesis, characterization and toxicological evaluation of a core-shell copper oxide/polyaniline nanocomposite.
Chemosphere. 2014 Aug; 108:107-14.C

Abstract

The newest generation of copper oxide NPs (CuO NPs) is the CuO core-shell (CS), which has potential applications in several areas (e.g., electronics and paint) and is able to provide a greater service life due to its coating; however, its toxicity is not fully understood. The objective of this study was to synthesize, characterize and evaluate the aquatic toxicology of CuO NPs and CuO core-shells through acute and chronic toxicity tests with the freshwater microcrustaceans Daphnia magna and to evaluate its acute toxicity with the marine bioluminescent bacteria Vibrio fischeri. The NPs were synthesized by direct thermal decomposition after being coated as a CS with polyaniline (PANI). With respect to acute toxicity with D. magna, the CuO NPs and CS CuO/PANI presented EC50 values of 0.32 mg L(-1) and 0.48 mg L(-1), respectively. For the tests with V. fischeri, the CuO NPs (EC50-15 min=7.79 mg L(-1)) exhibited behavior similar to that of the CS CuO/PANI (EC50-15 min=9.05 mg L(-1)) after 15 min of exposure. Regarding chronic toxicity, both forms showed a statistically significant effect (p<0.05) on the growth and reproduction parameters. Based on the characterization and toxicity results, it can be concluded that both forms of CuO were toxic and presented similar behaviors during the acute tests; however, after 21 d of exposure, CS CuO/PANI showed higher toxicity to the reproduction parameter, highlighting the importance of a complete study of the NP to better understand its toxicity mechanism.

Authors+Show Affiliations

Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brazil.Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brazil.Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brazil.Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brazil.Laboratório de Toxicologia Ambiental, LABTOX, Departamento de Engenharia Sanitária e Ambiental, Universidade Federal de Santa Catarina, Campus Universitário, CEP: 88040-970, Florianópolis, SC, Brazil. Electronic address: william.g.matias@ufsc.br.

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

24875919

Citation

Rossetto, Ana Letícia de O F., et al. "Synthesis, Characterization and Toxicological Evaluation of a Core-shell Copper Oxide/polyaniline Nanocomposite." Chemosphere, vol. 108, 2014, pp. 107-14.
Rossetto AL, Vicentini DS, Costa CH, et al. Synthesis, characterization and toxicological evaluation of a core-shell copper oxide/polyaniline nanocomposite. Chemosphere. 2014;108:107-14.
Rossetto, A. L., Vicentini, D. S., Costa, C. H., Melegari, S. P., & Matias, W. G. (2014). Synthesis, characterization and toxicological evaluation of a core-shell copper oxide/polyaniline nanocomposite. Chemosphere, 108, 107-14. https://doi.org/10.1016/j.chemosphere.2014.03.038
Rossetto AL, et al. Synthesis, Characterization and Toxicological Evaluation of a Core-shell Copper Oxide/polyaniline Nanocomposite. Chemosphere. 2014;108:107-14. PubMed PMID: 24875919.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Synthesis, characterization and toxicological evaluation of a core-shell copper oxide/polyaniline nanocomposite. AU - Rossetto,Ana Letícia de O F, AU - Vicentini,Denice S, AU - Costa,Cristina H, AU - Melegari,Silvia P, AU - Matias,William G, Y1 - 2014/04/12/ PY - 2013/08/02/received PY - 2014/02/01/revised PY - 2014/03/08/accepted PY - 2014/5/31/entrez PY - 2014/5/31/pubmed PY - 2014/10/22/medline KW - Core–shell KW - CuO nanoparticle KW - Daphnia magna KW - Nanotoxicology KW - Polyaniline KW - Vibrio fischeri SP - 107 EP - 14 JF - Chemosphere JO - Chemosphere VL - 108 N2 - The newest generation of copper oxide NPs (CuO NPs) is the CuO core-shell (CS), which has potential applications in several areas (e.g., electronics and paint) and is able to provide a greater service life due to its coating; however, its toxicity is not fully understood. The objective of this study was to synthesize, characterize and evaluate the aquatic toxicology of CuO NPs and CuO core-shells through acute and chronic toxicity tests with the freshwater microcrustaceans Daphnia magna and to evaluate its acute toxicity with the marine bioluminescent bacteria Vibrio fischeri. The NPs were synthesized by direct thermal decomposition after being coated as a CS with polyaniline (PANI). With respect to acute toxicity with D. magna, the CuO NPs and CS CuO/PANI presented EC50 values of 0.32 mg L(-1) and 0.48 mg L(-1), respectively. For the tests with V. fischeri, the CuO NPs (EC50-15 min=7.79 mg L(-1)) exhibited behavior similar to that of the CS CuO/PANI (EC50-15 min=9.05 mg L(-1)) after 15 min of exposure. Regarding chronic toxicity, both forms showed a statistically significant effect (p<0.05) on the growth and reproduction parameters. Based on the characterization and toxicity results, it can be concluded that both forms of CuO were toxic and presented similar behaviors during the acute tests; however, after 21 d of exposure, CS CuO/PANI showed higher toxicity to the reproduction parameter, highlighting the importance of a complete study of the NP to better understand its toxicity mechanism. SN - 1879-1298 UR - https://www.unboundmedicine.com/medline/citation/24875919/Synthesis_characterization_and_toxicological_evaluation_of_a_core_shell_copper_oxide/polyaniline_nanocomposite_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0045-6535(14)00387-7 DB - PRIME DP - Unbound Medicine ER -