Nanoparticles For Growth Research Articles

A brief study on the role of cerium oxide nanoparticles in growth and alleviation of mercury-induced stress in Vigna radiata and soil bacteriaBacillus coagulans.

Cerium oxide nanoparticles have so far been investigated for their role as an antioxidant in pathologies involving inflammation and high oxidative stress. However, its role as a plant and bacterial growth modulator and heavy metal stress reliever has been overlooked to date. Heavy metal contamination poses a major threat to mankind and the life-sustaining ecosystem. This study emphasizes the role of cerium oxide produced by the combustion method in promoting growth in Vigna radiata and Bacillus coagulans in the presence of mercury. The results show that cerium oxide nanoparticles significantly reduce the production of reactive oxygen species, hydrogen peroxide, and product of lipid peroxidation malondialdehyde in plants grown in the presence of 50 ppm mercury, thereby reducing oxidative stress. Nanoceria also increases plant growth with respect to those growing solely in mercury. Nanoceria alone does not significantly affect the growth of Vigna radiata as well as Bacillus coagulans and Escherichia coli, thereby proving its non-hazardous nature. It also significantly increases the growth of Bacillus coagulans at 25 ppm and 50 ppm of mercury. This study throws light upon the biologically non-hazardous nature of this particle by revealing how it promotes the growth of two soil bacteria Bacillus coagulans and E.coli at various dosages. The results of this study pave the way for the use of cerium oxide nanoparticles in plants and various other organisms to combat abiotic stress.

Effect of nanoparticles in growth of test - bacteria

Confident effect of five magnetic composite nanoparticles (FeP@Ag, FeP@Pd, CoP, NiP, Fe2O3@AГ) on growth of test bacteria colonies (Acinetobacter baumannii, Еscherichia coli, Klebsiella pneumoniae, Pseudomonas aeruginosa, Staphylococcus aureus) in five replicates each is considered. Reliable inhibitors of colonies of all five test bacteria were nanoparticles FeP@Ag. CoP nanoparticles are reliable inhibitors of growth of 4 test bacteria (except for test bacteria Escherichia сoli). NiP nanoparticles are reliable inhibitors of growth of 2 test bacteria: Escherichia сoli and Klebsiella pneumoniae. Bacteria Escherichia сoli were most sensitive to the effect of magnetic nanoparticles; and bacteria Pseudomonas aeruginosa and Staphylococcus aureus were most resistant to the effect of magnetic nanoparticles. The prospects of the method are in the possibility of multiple reuse of the magnetic particles with antimicrobial properties for bacterial decontamination of the studied sources of water and removal of magnetic nanoparticles from the treated liquids by electromagnet. The method can find use in water treatment facilities for household, Industrial and medical wastes.

Crystallization of Iron Nanostructures with Secondary‐Laser‐Assisted Pulsed Laser Ablation

SUMMARYIn this paper, we have investigated the growth technique of graphite‐coated nanomagnet particles to apply a sustainable environment technology by millisecond YAG pulsed laser ablation (PLA) method in ethanol solution using Fe bulk target. To control crystallized forms and/or grain size of nanomagnet materials, laser diode (LD) beam was irradiated to the ablation plumes, which were generated by this PLA method. In addition, magnetic field was applied to the ablation plumes, in order to separate a nanomagnet particle and a nonmagnet one. Ablation plumes were observed by high‐speed camera images, and they were reexcited by LD laser beam irradiation. In the case of magnetic field assist, ablation plumes were attracted to the magnet. This suggested that growth nanoparticles had magnetic property. Typical carbon‐coated nanoparticles, which grown by nonassisted PLA, were observed by TEM images, and these grain sizes were dependent on the pulsed width of PLA source. On the other hand, LD‐assisted samples showed there were rod‐sharped nanomaterials, and crystallization of these materials was β‐Fe3O4, γ‐Fe2O3 surmised by electron diffraction.

Role of nanoparticles in growth and development ofplants: a review

Nanotechnology is the most novel field of 21 st century. Nanotechnology has the ability to transform the agricultural and food industry with the help of various innovative tools for the molecular management of diseases, rapid disease detection, enhancing the ability of plants to absorb nutrients. Nanotechnology has the potential to increase yield of nutrient values and also plays a vital role in developing improved systems for monitoring ecological conditions and increasing the capacity of crops to absorb nutrients or pesticides. There are majority of nano-material which is known for its plant growth promoting effects. This paper reportedly contains the key role of nanoparticles in plants. This present review highlights the effects of nanoparticles on growth, flowering and seed production in plants. Recent researches on effects of nanoparticles on various plant crops have reported for an increased germination and growth of seed. The aim of this project is to study the roles of nanoparticles on various plants. Effects of these nanoparticles on plant growth and development can be easily highlighted in this review.