Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii

Abstract We demonstrate for the first time the toxicity of carbon nanotube (CNT) metal hybrids on freshwater algae. Carbon nanotube-silver (CNT-Ag) and platinum hybrids (CNT-Pt) were synthesized and exposed to Chlamydomonas reinhardtii (C. reinhardtii), and their toxicity was compared to the pure me...

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Autores principales:	Worawit Intrchom, Megha Thakkar, Raymond F. Hamilton, Andrij Holian, Somenath Mitra
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Algal Cells Light Conversion Process Pristine Multiwalled Carbon Nanotubes Quantum Yield Efficiency Silver Ion Release Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bf6b1e78c8f84a9ba0965284a7f0d6ea
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spelling	oai:doaj.org-article:bf6b1e78c8f84a9ba0965284a7f0d6ea2021-12-02T15:08:35ZEffect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii10.1038/s41598-018-33674-72045-2322https://doaj.org/article/bf6b1e78c8f84a9ba0965284a7f0d6ea2018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33674-7https://doaj.org/toc/2045-2322Abstract We demonstrate for the first time the toxicity of carbon nanotube (CNT) metal hybrids on freshwater algae. Carbon nanotube-silver (CNT-Ag) and platinum hybrids (CNT-Pt) were synthesized and exposed to Chlamydomonas reinhardtii (C. reinhardtii), and their toxicity was compared to the pure metal salts. Interactions between CNT-metal and algae were studied using electron microscopy and it was observed that while outer membrane of the algal cell was damaged as a result of Ag+ toxicity from pure Ag, the CNT-Ag only caused the distortion of the cell wall. It was also observed that the CNT-Ag particles could be internalized and enclosed in internal vesicles in the algal cells. Long-term exposure of the CNT-metals showed delay in algal growth. CNT-Ag at a concentration of 5.0 mg/L showed 90% growth inhibition and also showed a significant effect on photosynthetic yield with a 21% drop compared to the control. It was observed that pure silver was more toxic compared with CNT-Ag for both growth and photosynthesis in the 96-hour exposure. In general, CNT-Pt showed significantly less toxic effects on the algae than CNT-Ag. Based on this study, it is postulated that the CNT suppressed the release of Ag+ from CNT-Ag hybrids, thus reducing overall toxicity.Worawit IntrchomMegha ThakkarRaymond F. HamiltonAndrij HolianSomenath MitraNature PortfolioarticleAlgal CellsLight Conversion ProcessPristine Multiwalled Carbon NanotubesQuantum Yield EfficiencySilver Ion ReleaseMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Algal Cells Light Conversion Process Pristine Multiwalled Carbon Nanotubes Quantum Yield Efficiency Silver Ion Release Medicine R Science Q
spellingShingle	Algal Cells Light Conversion Process Pristine Multiwalled Carbon Nanotubes Quantum Yield Efficiency Silver Ion Release Medicine R Science Q Worawit Intrchom Megha Thakkar Raymond F. Hamilton Andrij Holian Somenath Mitra Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
description	Abstract We demonstrate for the first time the toxicity of carbon nanotube (CNT) metal hybrids on freshwater algae. Carbon nanotube-silver (CNT-Ag) and platinum hybrids (CNT-Pt) were synthesized and exposed to Chlamydomonas reinhardtii (C. reinhardtii), and their toxicity was compared to the pure metal salts. Interactions between CNT-metal and algae were studied using electron microscopy and it was observed that while outer membrane of the algal cell was damaged as a result of Ag+ toxicity from pure Ag, the CNT-Ag only caused the distortion of the cell wall. It was also observed that the CNT-Ag particles could be internalized and enclosed in internal vesicles in the algal cells. Long-term exposure of the CNT-metals showed delay in algal growth. CNT-Ag at a concentration of 5.0 mg/L showed 90% growth inhibition and also showed a significant effect on photosynthetic yield with a 21% drop compared to the control. It was observed that pure silver was more toxic compared with CNT-Ag for both growth and photosynthesis in the 96-hour exposure. In general, CNT-Pt showed significantly less toxic effects on the algae than CNT-Ag. Based on this study, it is postulated that the CNT suppressed the release of Ag+ from CNT-Ag hybrids, thus reducing overall toxicity.
format	article
author	Worawit Intrchom Megha Thakkar Raymond F. Hamilton Andrij Holian Somenath Mitra
author_facet	Worawit Intrchom Megha Thakkar Raymond F. Hamilton Andrij Holian Somenath Mitra
author_sort	Worawit Intrchom
title	Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
title_short	Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
title_full	Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
title_fullStr	Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
title_full_unstemmed	Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii
title_sort	effect of carbon nanotube-metal hybrid particle exposure to freshwater algae chlamydomonas reinhardtii
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/bf6b1e78c8f84a9ba0965284a7f0d6ea
work_keys_str_mv	AT worawitintrchom effectofcarbonnanotubemetalhybridparticleexposuretofreshwateralgaechlamydomonasreinhardtii AT meghathakkar effectofcarbonnanotubemetalhybridparticleexposuretofreshwateralgaechlamydomonasreinhardtii AT raymondfhamilton effectofcarbonnanotubemetalhybridparticleexposuretofreshwateralgaechlamydomonasreinhardtii AT andrijholian effectofcarbonnanotubemetalhybridparticleexposuretofreshwateralgaechlamydomonasreinhardtii AT somenathmitra effectofcarbonnanotubemetalhybridparticleexposuretofreshwateralgaechlamydomonasreinhardtii
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Effect of Carbon Nanotube-Metal Hybrid Particle Exposure to Freshwater Algae Chlamydomonas reinhardtii

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