As one of the most widely used nanomaterials, CeO nanoparticles (NPs) might be released into the aquatic environment. In this paper, the interaction of CeO NPs and Ce ions (0~10 mg/L) with duckweed ( L.) was investigated. CeO NPs significantly inhibited the root elongation of duckweed at concentrations higher than 0.1 mg/L, while the inhibition threshold of Ce ions was 0.02 mg/L. At high doses, both reduced photosynthetic pigment contents led to cell death and induced stomatal deformation, but the toxicity of Ce ions was greater than that of CeO NPs at the same concentration. According to the in situ distribution of Ce in plant tissues by -XRF, the intensity of Ce signal was in the order of root > old frond > new frond, suggesting that roots play a major role in the uptake of Ce. The result of XANES showed that 27.6% of Ce(IV) was reduced to Ce(III) in duckweed treated with CeO NPs. We speculated that the toxicity of CeO NPs to duckweed was mainly due to its high sensitivity to the released Ce ions. To our knowledge, this is the first study on the toxicity of CeO NPs to an aquatic higher plant.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10535116 | PMC |
| http://dx.doi.org/10.3390/nano13182523 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Foam-based antibacterial hydrogel composed of carboxymethyl cellulose/polyvinyl alcohol/cerium oxide nanoparticles for potential wound dressing.
Int J Biol Macromol
December 2024
Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, Maslak, Istanbul, Turkey. Electronic address:
Foam-based wound dressing materials produced by dispersing gas phases in a polymeric material are soft, adapt to the body shape, and allow the absorption of wound exudate due to their porous structure. Most of these formulations are based on synthetic substances such as polyurethane. However, biopolymers have entered the field as a new player thanks to their biocompatible and sustainable nature.
View Article and Find Full Text PDFBifunctional Electrospun Nanocomposite Dressing: Integrating Antibacterial Efficacy and Controllable Antioxidant Properties for Expedited Wound Healing.
ACS Appl Mater Interfaces
December 2024
Key Laboratory of Superlight Materials & Surface Technology, Ministry of Education, College of Materials Science and Chemical Engineering, Harbin Engineering University, Harbin 150001, P. R. China.
Current wound dressings are insufficient in simultaneously addressing bacterial infections and oxidative stress, which severely affects wound healing outcomes. To solve this problem, we introduced poly(ionic liquid) (PIL) with strong antibacterial properties and cerium oxide nanoparticles (CeONPs) with excellent antioxidant capabilities into polyacrylonitrile (PAN) nanofiber membranes to prepare a novel composite dressing. The PIL-CeONPs-PAN nanofiber membrane provides sustained antibacterial activity through stably embedded PIL, while the uniformly distributed CeONPs achieve controlled release, avoiding safety issues caused by the rapid release of active substances.
View Article and Find Full Text PDFExploring the innovative application of cerium oxide nanoparticles for addressing oxidative stress in ovarian tissue regeneration.
J Ovarian Res
December 2024
Manipal Institute of Regenerative Medicine, Manipal Academy of Higher Education, Manipal, Karnataka, 576104, India.
Article Synopsis
Algae-synthesized cerium oxide nanoparticles for antibiotic degradation in water and subsequent bioenergy production.
3 Biotech
December 2024
Amity Institute of Nanotechnology, Amity University, Noida, Uttar Pradesh 201313 India.
Unlabelled: In the present study, CeO nanoparticles were synthesized using one-pot green route with high yield using microalgae The synthesized CeO nanoparticles (CeO-np) exhibited rapid photocatalytic degradation 98.2% of doxycycline (DC) (20 mg/L) in only 30 min under visible light at pH7 in water. It was encouraging that CeO-np did not demonstrate a loss of photocatalytic activity up to five repeated cycles, confirming its stability during the degradation process.
View Article and Find Full Text PDFInterface Engineering: Enhanced Catalysis Through Precise Control of Metal Nanocluster Transformation.
Inorg Chem
December 2024
College of Materials Science and Engineering, Fuzhou University, Fuzhou 350108, PR China.
Article Synopsis
- - Atomically precise metal nanoclusters (NCs) are interesting for their unique structures and catalytic potential, but they have issues like instability and self-aggregation.
- - This research presents a method to stabilize metal NCs by anchoring them to a metal oxide matrix, creating a hollow core-shell structure through thermal treatment.
- - The resulting metal NPs@metal oxide heterostructures show improved catalytic activity and stability for reducing aromatic nitro compounds, suggesting a new approach to utilize the instability of metal NCs in catalysis.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!