Toxicity of Ag, CuO and ZnO nanoparticles to selected environmentally relevant test organisms and mammalian cells in vitro: a critical review
Olesja Bondarenko,Katre Juganson,Katre Juganson,Angela Ivask,Kaja Kasemets,Monika Mortimer,Monika Mortimer,Anne Kahru +7 more
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TLDR
The toxic range of all the three metal-containing NPs to target- and non-target organisms overlaps, indicating that the leaching of biocidal NPs from consumer products should be addressed.Abstract:
Nanoparticles (NPs) of copper oxide (CuO), zinc oxide (ZnO) and especially nanosilver are intentionally used to fight the undesirable growth of bacteria, fungi and algae. Release of these NPs from consumer and household products into waste streams and further into the environment may, however, pose threat to the ‘non-target’ organisms, such as natural microbes and aquatic organisms. This review summarizes the recent research on (eco)toxicity of silver (Ag), CuO and ZnO NPs. Organism-wise it focuses on key test species used for the analysis of ecotoxicological hazard. For comparison, the toxic effects of studied NPs toward mammalian cells in vitro were addressed. Altogether 317 L(E)C50 or minimal inhibitory concentrations (MIC) values were obtained for algae, crustaceans, fish, bacteria, yeast, nematodes, protozoa and mammalian cell lines. As a rule, crustaceans, algae and fish proved most sensitive to the studied NPs. The median L(E)C50 values of Ag NPs, CuO NPs and ZnO NPs (mg/L) were 0.01, 2.1 and 2.3 for crustaceans; 0.36, 2.8 and 0.08 for algae; and 1.36, 100 and 3.0 for fish, respectively. Surprisingly, the NPs were less toxic to bacteria than to aquatic organisms: the median MIC values for bacteria were 7.1, 200 and 500 mg/L for Ag, CuO and ZnO NPs, respectively. In comparison, the respective median L(E)C50 values for mammalian cells were 11.3, 25 and 43 mg/L. Thus, the toxic range of all the three metal-containing NPs to target- and non-target organisms overlaps, indicating that the leaching of biocidal NPs from consumer products should be addressed.read more
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Journal ArticleDOI
Toxicity of differently sized and charged silver nanoparticles to yeast Saccharomyces cerevisiae BY4741: a nano-biointeraction perspective.
TL;DR: The size, and especially the coating/charge of AgNPs can be efficiently used for the design of new more efficient antifungals.
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Boosting photocatalytic chlorophenols remediation with addition of sulfite and mechanism investigation by in-situ DRIFTs.
Kejian Li,Xiaozhong Fang,Zhaoyang Fu,Yang Yang,Iqra Nabi,Yiqing Feng,Aziz-Ur-Rahim Bacha,Liwu Zhang +7 more
TL;DR: 4-chlorophenol (4-CP) photodegradation was systematically investigated in a sulfite mediated system with g-C3N4 as photocatalyst, suggesting that sulfite could be universally applied in photocatalytic wastewater purification.
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Emerging Cellulose-Based Nanomaterials and Nanocomposites
TL;DR: This chapter endeavor to concisely communicate the history, rationale, and engineering motivations underlying the recent advances of nanocelluloses and their nanocomposites and detail the emerging aspects of nano celluloses, which encompass new nanocellULose families and their superior properties, enhanced functionality, and novel applications.
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Photosynthetic, morphological and biochemical biomarkers as tools to investigate copper oxide nanoparticle toxicity to a freshwater chlorophyceae.
Lays de Oliveira Gonçalves Alho,Jaqueline Pérola Souza,Giseli Swerts Rocha,Adrislaine da Silva Mansano,Ana Teresa Lombardi,Hugo Sarmento,Mariada Graça Gama Melão +6 more
TL;DR: This research demonstrated that CuO NP may affect the physiology of R. subcapitata, and because they were observed in a primary producer, the results indicate potential risks of the NP to microalgae and foresee consequences to higher trophic levels in aquatic communities.
Journal ArticleDOI
Recent advances on state-of-the-art copper (I/II) oxide as photoelectrode for solar green fuel generation: Challenges and mitigation strategies
Mohd Nur Ikhmal Salehmin,Lorna Jeffery Minggu,Khuzaimah Arifin,Rozan Mohamad Yunus,Mohamad Azuwa Mohamed,Mohammad B. Kassim +5 more
TL;DR: In this article, the state of the art in morphological modulation of CuxO as a photocathode is presented, including the state-of-the-art for photoelectrochemical green fuel generation, such as hydrogen, methane, ethane, methanol and ethanol.
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