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Overview and Emergence of Nanobiotechnology in Plants
Published in Khalid Rehman Hakeem, Majid Kamli, Jamal S. M. Sabir, Hesham F. Alharby, Diverse Applications of Nanotechnology in the Biological Sciences, 2022
Saheed Adekunle Akinola, Rasheed Omotayo Adeyemo, Ismail Abiola Adebayo
According to Baybordi (2005), nanofertilizers made from micronutrients help lessen the effect of environmental stress such as temperature, salinity, drought, and heavy metals on the growth of plant. Amidst other micronu-trients, zinc has been proven to be very important plant growth-promoting mineral and help activate important metabolic activities in proximal plant. As shown on Table 6.1, ZnO-NPs help improve biomass production, tolerance to drought and also promote sprouting by increasing auxin IAA level at the root of plant. A research conducted by Adhikari et al. (2015) showed zinc oxide nanoparticle enhance the growth of Z. mays grown under different soil stressors by exhibiting good features such as increased shoot, root, and height of plant. Also, in another study conducted on lettuce and rice exposed to cadmium (Cd) stressed soil, synergistic effect of ZnO-NPs and biochar instigated a decrease in Cd concentration in the soil and a better yield of plant noticed either in the presence or the absence of biochar compared to the control (Ali et al., 2019) (Table 6.1). At a very small amount, ZnO-NPs tend to improve crop growth under the influence of different stressors with little toxicity and hence, considered eco-friendly material for agricultural enhancement.
Pb(II) removal and its adsorption from aqueous solution using zinc oxide/graphene oxide composite
Published in Chemical Engineering Communications, 2021
Siti Zu Nurain Ahmad, Wan Norharyati Wan Salleh, Norhaniza Yusof, Mohd Zamri Mohd Yusop, Rafidah Hamdan, Nor Asikin Awang, Nor Hafiza Ismail, Norafiqah Rosman, Norazlianie Sazali, Ahmad Fauzi Ismail
Meanwhile, zinc oxide nanoparticle, a relatively affordable metal oxide, has also attracted attention due to its numerous established and potential industrial applications, for instance, in piezoelectric devices, antireflection coatings, sensors, solar cells, UV protection, photocatalysis, and photodiode devices (Hatamie et al. 2015; Stark et al. 2015). Even with the other outstanding abilities, ZnO also has high porosity, which is a good property as potential adsorbents. The combination of both graphene oxide and zinc oxide is thought to unveil excellent materials with enhanced function. Therefore, a few studies have been demonstrated on synthesizing zinc oxide/graphene or graphene oxide hybrid for different applications, for instance electrochemical sensor (Salih et al. 2016), methylene blue removal by photocatalysis (Atchudan et al. 2016), adsorbents for methylene blue and methyl orange (Archana et al. 2018), as well as adsorbents for Ni, Cu, Cd and Ag (Mashhadzadeh et al. 2018). However, to our best knowledge, no extensive study has been done on the utilization of zinc oxide modified graphene oxide as the adsorbents in the adsorptive removal of Pb(II) ions in aqueous solution despite their potential ability in combination. Therefore, this current study would focus on fabricating the ZnO/GO composite with the purpose of removing Pb(II) from the synthetic wastewater through adsorption. The adsorption uptake of Pb(II) of the composite was evaluated via the batch adsorption test by using different initial pH value of the synthetic wastewater, initial Pb(II) concentration, the dosage of the adsorbent, and the performance of the adsorbents with respect to the increase in contact time.
Gold nanoparticles: a novel paradigm for targeted drug delivery
Published in Inorganic and Nano-Metal Chemistry, 2023
Kamalavarshini S, Ranjani S, Hemalatha S
Metals, semiconductors, carbon dots, carbon nanotubes, oxides all compose of inorganic nanoparticles are each of these are separately and keenly explored currently for oncologic diagnosis and therapeutic goals (Figure 2). Recently, Nanodiamonds have greatly contributed to stem cell therapy and as novel drug delivery vectors. Magnetic and catalytic properties of iron oxide nanoparticles have contributed toward accomplishing their superiority in nanomaterial synthesis for disease medications. Sun et al. conducted a research on IONPs conjugated with methotrexate, a chemo-drug along with chlorotoxin ligand during MRI studies revealed their toxicity in tumor cells.[43] SIONPs capped along bovine serum albumin were utilized as contrast agents for pancreatic cancer imaging and diagnosis.[44] Nontoxicity and biocompatible nature of zinc oxide nanoparticle favors their utility as potential candidates for wide range of biomedical applications. cancer cells death produced by cell cytotoxicity and ROS generation was initiated by application of ZnONPs.[45] In 2016, Experiments carried out demonstrated that conjugating siRNA and irinotecan for inhibiting growth of breast cancer cells by Akt kinase activation and degradation initiated by Mdm2 regulation were successful, added advantages of tumor growth inhibition and mediation of apoptosis were observed. Silver nanoparticles have unique plasmonic structure that promotes absorption and light dispersion, dual purpose is served by utilizing these NPs as they account for tumor cells elimination by increasing thermal conditions and imagining of tumor regions are also possible. In 2014 Boca et al.[46] conducted an experiment in which chitosan mediated silver nanoparticle labeled with a p-aminothiophenol were used to target cancer cell treatment for producing therapeutic response by irradiation with a NIR laser in resonance with AgNPs plasmonic band.
Comparison of the effect of metal oxide nanoparticles (copper, zinc, and iron) on the removal of cobalt by electrocoagulation processes from refinery wastewater
Published in Journal of Dispersion Science and Technology, 2023
Mansour Jahangiri, Hossein Bargahi Nasab, Hossein Abdipour, Hossein Jafari Mansoorian, Farshid jaberi Ansari
Zinc oxide nanoparticle was synthesized by the mechanochemical method.[12] Also, copper oxide nanoparticle was synthesized by electrochemical reduction method.[13]