Nanostructured materials: An overview and commercial analysis

Rittner, M.; Abraham, Thomas

doi:10.1007/s11837-998-0065-4

Cited by 48 publications

(30 citation statements)

References 3 publications

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“…Twoway ANOVA also suggested that the effect of nano-CeO 2 treatment on the EC, TDS and % TKN in the soils depended on the SOM content in situ, with interaction at p ≤ 0.001. Nanoscale materials have been used for synthesis of ceramics, metals, alloys, or semiconductors, and composite materials for various applications due to its ability to increase EC (Rittner and Abraham, 1998). Thus, an increase in EC and TDS in the soils on nano-CeO 2 addition was noted, irrespective of soil type.…”

Section: Effect Of Nano-ceo 2 On Soil Properties and Ce Distribution mentioning

confidence: 99%

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Majumdar

Peralta-Videa

Trujillo-Reyes

et al. 2016

Science of The Total Environment

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Soil organic matter plays a major role in determining the fate of the engineered nanomaterials (ENMs) in the soil matrix and effects on the residing plants. In this study, kidney bean plants were grown in soils varying in organic matter content and amended with 0-500mg/kg cerium oxide nanoparticles (nano-CeO2) under greenhouse condition. After 52days of exposure, cerium accumulation in tissues, plant growth and physiological parameters including photosynthetic pigments (chlorophylls and carotenoids), net photosynthesis rate, transpiration rate, and stomatal conductance were recorded. Additionally, catalase and ascorbate peroxidase activities were measured to evaluate oxidative stress in the tissues. The translocation factor of cerium in the nano-CeO2 exposed plants grown in organic matter enriched soil (OMES) was twice as the plants grown in low organic matter soil (LOMS). Although the leaf cover area increased by 65-111% with increasing nano-CeO2 concentration in LOMS, the effect on the physiological processes were inconsequential. In OMES leaves, exposure to 62.5-250mg/kg nano-CeO2 led to an enhancement in the transpiration rate and stomatal conductance, but to a simultaneous decrease in carotenoid contents by 25-28%. Chlorophyll a in the OMES leaves also decreased by 27 and 18% on exposure to 125 and 250mg/kg nano-CeO2. In addition, catalase activity increased in LOMS stems, and ascorbate peroxidase increased in OMES leaves of nano-CeO2 exposed plants, with respect to control. Thus, this study provides clear evidence that the properties of the complex soil matrix play decisive roles in determining the fate, bioavailability, and biological transport of ENMs in the environment.

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Section: Effect Of Nano-ceo 2 On Soil Properties and Ce Distribution mentioning

confidence: 99%

Soil organic matter influences cerium translocation and physiological processes in kidney bean plants exposed to cerium oxide nanoparticles

Majumdar

Peralta-Videa

Trujillo-Reyes

et al. 2016

Science of The Total Environment

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“…Some studies forecasted that the production of metal oxide nanoparticles (NPs) might reach 1,663,168 tons by 2020. Nanoalumina (nano-Al 2 O 3 ) leads the nanomaterial industry, with an estimated share of 20% of the total market production (Future Markets Inc 2013; Rittner and Abraham 1998). Nano-Al 2 O 3 could be used as an abrasive material, an absorbent material, in biomaterials and in antibacterial materials (Zielínski et al 1993;Ganguly and Poole 2003;Martínez et al 2003;Sadiq et al 2009).…”

Section: Introductionmentioning

confidence: 99%

Enhanced uptake of antibiotic resistance genes in the presence of nanoalumina

Ding

Pan

Jin³

et al. 2016

Nanotoxicology

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Nanomaterial pollution and the spread of antibiotic resistance genes (ARGs) are global public health and environmental concerns. Whether nanomaterials could aid the transfer of ARGs released from dead bacteria into live bacteria to cause spread of ARGs is still unknown. Here, we demonstrated that nano-Al2O3 could significantly promote plasmid-mediated ARGs transformation into Gram-negative Escherichia coli strains and into Gram-positive Staphylococcus aureus; however, bulk Al2O3 did not have this effect. Under suitable conditions, 7.4 × 10(6) transformants of E. coli and 2.9 × 10(5) transformants of S. aureus were obtained from 100 ng of a pBR322-based plasmid when bacteria were treated with nano-Al2O3. Nanoparticles concentrations, plasmid concentrations, bacterial concentrations, interaction time between the nanomaterial and bacterial cells and the vortexing time affected the transformation efficiency. We also explored the mechanisms underlying this phenomenon. Using fluorescence in situ hybridization and scanning electron microscopy, we found that nano-Al2O3 damaged the cell membrane to produce pores, through which plasmid could enter bacterial cells. Results from reactive oxygen species (ROS) assays, genome-wide expression microarray profiling and quantitative real-time polymerase chain reactions suggested that intracellular ROS damaged the cell membrane, and that an SOS response promoted plasmid transformation. Our results indicated the environmental and health risk resulting from nanomaterials helping sensitive bacteria to obtain antibiotic resistance.

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“…However, while an understanding of the range and nature of functionalities that can be accessed through nanostructuring is just beginning to unfold, its considerable potential for revolutionizing the ways in which materials and products are created is already clear. It is already having a significant commercial impact and it will certainly have a much greater influence in the future [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…for avoiding the problems created by sudden brittle failure, which still hinder wider application of ceramic materials [5][6][7]. However, a breakthrough into widespread and general use in engineering, such as heat engine parts, heat exchangers and fuel cell components, will be permitted only by cost-effective solutions of the mechanical reliability problem [5][6][7]. It follows that there is need for the development of a new class of ceramic materials with improved mechanical and physico-chemical properties on an industrial scale.…”

Section: Introductionmentioning

confidence: 99%