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Sustainable Exploitation of Agricultural, Forestry, and Food Residues for Green Nanotechnology Applications
Published in Devarajan Thangadurai, Saher Islam, Jeyabalan Sangeetha, Natália Cruz-Martins, Biogenic Nanomaterials, 2023
Luciano Paulino Silva, Ariane Pandolfo Silveira, Cínthia Caetano Bonatto, Eduardo Fernandes Barbosa, Kelliane Almeida Medeiros, Lívia Cristina De Souza Viol, Tatiane Melo Pereira, Thaís Ribeiro Santiago, Vera Lúcia Perussi Polez, Victoria Baggi Mendonça Lauria
Notwithstanding the advances related to studies of green nanotechnology solutions to control pests and diseases, green nanomaterials can also be employed to increase productivity as nano-fertilizer. In fact, some green nanoparticles can enhance plant growth and promote seed germination. More than half of the nitrogen and phosphate applied to soils stay unavailable to the plant due to the incorporation into soil organic matter. So, the use of nanoparticles and nanomaterials can reduce this loss of macronutrients and micronutrients. In such case, the nutrients can be applied individually or together in the same nanosystem. Shebl et al. (2019) synthesized manganese zinc ferrite nanoparticles (Mn0.5Zn0.5Fe2O4 NPs) using a green chemistry route and applied via foliar in squash plants (Cucurbita pepo L). In sum, the use of the nano-fertilizer at lower concentration resulted in the highest vegetative growth when the nanoparticles were synthesized at 180°C compared with nanoparticles prepared at lower microwave holding temperature (140 and 160°C). Nanocarriers (NCs) are also reported enhancing the plant growth and to control the release of nutrients. Joshi et al. (2018) studied the influence of CNTs in germination and growth of wheat. CNTs dilated in 80% the xylem and phloem, enhancing the transport of water and nutrients, consequently increasing the yield in 63%. Additionally, the controlled release of nitrogen was investigated using urea-hydroxyapatite nanoparticles. Kotte-goda et al. (2017) observed a rate of 12 times slower of nitrogen compared to pure urea.
Nanotechnology as a Clean Technology and a Vision for the Future
Published in Satya Bir Singh, Alexander V. Vakhrushev, A. K. Haghi, Materials Physics and Chemistry, 2020
Sukanchan Palit, Chaudhery Mustansar Hussain
Green nanotechnology and the application of environmental biotechnology are the scientific prowess and scientific vision of today’s research pursuit. Nanotechnology integrated with environmental engineering science will surely open up new doors of scientific enquiry in years to come. Novel separation processes, conventional, and nonconventional environmental engineering techniques are the utmost needs of science and civilization today. Thus, also comes the importance of green nanotechnology. Green nanotechnology refers to the use of nanotechnology to enhance and envision the environmental sustainability of the processes. It also refers to the use of products of nanotechnology to veritably enhance environmental sustainability. It includes making green nanoproducts and using nano-products in support of sustainability.27,28 Green nanotechnology has been described as the development of clean technologies to minimize environmental risks associated with the manufacture and use of nanotechnology products, and to highly encourage replacement of existing products with more new nanoproducts that are more environmental friendly. Civilization’s vast knowledge prowess, the success of science, and the world of scientific challenges will surely open up new recommendations in the field of nanoscience and nanotechnology.27,28
Fabrication and Functionalization of Other Inorganic Nanoparticles and Nanocomposites
Published in Vineet Kumar, Praveen Guleria, Nandita Dasgupta, Shivendu Ranjan, Functionalized Nanomaterials I, 2020
Kiranmai Mandava, Uma Rajeswari B.
Living organisms have huge potential for the fabrication of nanoparticles for wide applications (Ghorbani et al., 2011). Moreover, only a few of the reported synthetic methods have the potential of producing stable copper nanoparticles due to the higher oxidation rate (Aslam et al., 2002). Because of the limitations of physical and chemical methods, green nanotechnology has attracted significant attention because it enhances the quality of the environment, reduces pollution, and conserves natural and non-renewable resources. However, many reaction conditions and toxic chemicals may not be suitable for biological and biochemical application (Rajender, 2011). Therefore, various green stabilizing agents such as polyphenols, enzymes, citric acid, vitamins (B, C, D, K), biodegradable polymers, and silica are able to stabilize and functionalize metallic nanoparticles without showing any deleterious effect on the environment and biosystems.
Nanomaterials against pathogenic viruses: greener and sustainable approaches
Published in Inorganic and Nano-Metal Chemistry, 2020
Ghazaleh Jamalipour Soufi, Siavash Iravani
Generally, green nanotechnology includes the green chemistry principles to use natural and renewable feedstocks and less hazardous resources for synthesis, and to reduce derivatives and employ benign solvents and auxiliaries. Green nanomedicine has currently been improved as one of the newest approaches combining green nanotechnology with the pharmaceutical and biomedical sciences for manufacturing and developing NP-based therapeutics.[24–28] In this regard, systematic studies to find innovative green-based methods for preparation of eco-friendly and harmless nano-assemblies are vital.[29,30] Importantly, the production of nanomaterials should follow the green chemistry principles to avoid and/or minimize both the environmental impacts and the potential adverse health effects with regards to less toxic synthesis and avoidance of utilizing hazardous resources/substances in the synthetic procedures;[30,31] this field of science employs natural, cost-effective, eco-friendly, less hazardous and readily accessible biorenewable resources for constructing nanomaterials.[30,32,33] These nanomaterials are promising alternatives for elimination of pathogenic viruses and treatment of viral infections.[24–28] However, various concepts of green nanomedicine are still at the early stages of development, and still diverse vital challenging issues should be pointed out regarding the antiviral applications of the fabricated nanomaterials (especially for clinical practices).
Avicennia marina mediated synthesis of TiO2 nanoparticles: its antibacterial potential against some aquatic pathogens
Published in Inorganic and Nano-Metal Chemistry, 2021
Mina Shahin Lefteh, Iman Sourinejad, Zahra Ghasemi
Green nanotechnology aims to produce nanoscale materials and particles through environmental-friendly bioengineering and has become more attractive to scientists as it is safe, clean and eco-friendly.[5,6] There is a list of sources used in the bio-production of metallic NPs including bacteria,[7,8] fungi,[9,10] seaweed,[11,12] plants and plant extracts.[5,13]
Silver nanoparticles (AgNPs) facilitated by plant parts of Crataegus ambigua Becker AK extracts and their antibacterial, antioxidant and antimalarial activities
Published in Green Chemistry Letters and Reviews, 2021
Mike O. Ojemaye, Sunday O. Okoh, Anthony I. Okoh
Nanoparticle is a microscopic material that has at least one dimension below 100 nanometers in size. Owing to their significant thermal, chemical, optical, physical, and electrical properties; they are very useful in consumer goods, pharmaceutical, chemical, environmental, energy, agricultural, and communication industries (1, 2). Nanoparticles (NPs) synthesis involved the use of different chemicals including ascorbate, sodium borohydride, elemental hydrogen, sodium citrate, Tollen’s reagent, and ethylene glycol etc., which reduced metal ions in polar and non-polar solutions. These substances are very harmful and produced non-eco-friendly compounds (3). Studies have shown that plants facilitate better stable metal NPs, proven to be the greatest candidate for quick and large-scale production as compared to microbes and hazardous substances (4, 5). Recent studies have shown that production of metallic NPs via plant parts including the seed, leaf, and stem, is the most reproducible approach, cost effective, and simplest (5, 6). The preference for plant extract in NPs synthesis is due to presence of bioactive metabolites in most plants, including terpenes, alkaloids, protein and others, which serves as effective bioreducing compounds in synthesis of NPs. It has been suggested that metal nanoparticles mediated by plant’s extract enhanced the bioactivity, broad spectrum properties and applications of NPs (3, 4). Biotechnology and pharmacological evaluation of many medicinal plant have been documented by several research scientists in the last two decades (7–9). Therefore, the use of phytochemicals in the preparation of NPs will builds a significant synergy between natural products and nanotechnology. Consequently, green nanotechnology which is performed devoid of significant environmental pollution will create novel sustainable, economically viable, eco-friendly and cutting edge technology.