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Your search keyword '"Rajiv Periakaruppan"' showing total 2 results
Start Over Author "Rajiv Periakaruppan" Publisher academic press
2 results on '"Rajiv Periakaruppan"'

1. Nanometal Oxides in Horticulture and Agronomy

Author

Li Xinghui, Rajiv Periakaruppan, Remya Mohanraj, Sugapriya Dhanasekaran, Li Xinghui, Rajiv Periakaruppan, Remya Mohanraj, and Sugapriya Dhanasekaran

Abstract

Nanometal Oxides in Horticulture and Agronomy, a volume in the Nanomaterial-Plant Interactions series, summarizes the physiological, morphological, biochemical, and molecular regulation of metal oxide nanoparticles in plants under normal conditions as well as during different stresses. With a focus on impact and applications, it presents the latest advances in the roles of metal oxide nanoparticles in both horticulture and agriculture. Metal oxide nanoparticles have been reported as beneficial inorganic materials for the growth and development of plants, playing a protective role against the abiotic and biotic stresses. Researchers need to understand the different regulatory pathways of metal oxide nanoparticles, including their mechanisms of operation under different stressful conditions. This volume presents the physiological, morphological, biochemical, and molecular regulation of metal oxide nanoparticles in plants in normal conditions as well as during different stresses. It also discusses tolerance mechanisms and the variety of roles and applications that metal oxide nanoparticles have within plant biology. Beginning with an introductory overview to metal oxide nanomaterials, chapters discuss the effect of metal oxide nanomaterials on biochemical pathways within the plant, highlighting key applications such as fertilizers, weed control systems and pest control systems. It describes the impact of metal oxide nanoparticles in different challenging environmental conditions. Concluding with a discussion of the strengths and weaknesses of metal oxide nanoparticles in agriculture, Nanometal Oxides in Horticulture and Agronomy provides inspiration for further research and advancement. This book is an essential read for researchers and students interested in horticulture, agronomy, and plant nanomaterials. - Bridges the interdisciplinary knowledge gap between metal oxide nanoparticle synthesis and biological relevance in agriculture and horticulture - Evaluates why metal oxide nanoparticles are superior to other nanomaterials for horticultural and agricultural applications - Interprets the impact of metal oxide nanoparticles against a variety of different stressors, including drought, salinity and heavy metal contamination

Published
2023

2. Development of sonophotocatalytic process for degradation of acid orange 7 dye by using titanium dioxide nanoparticles/graphene oxide nanocomposite as a catalyst.

Author

Al-Musawi TJ, Rajiv P, Mengelizadeh N, Mohammed IA, and Balarak D

Subjects
Azo Compounds, Benzenesulfonates, Catalysis, Escherichia coli, Titanium, Graphite, Nanocomposites, Nanoparticles
Abstract

In the present study, the sonophotocatalytic degradation of acid orange 7 (AO7) dye was evaluated. The catalyst used was the titanium dioxide nanoparticles/graphene oxide (TiO 2 /GO) nanocomposite, which was synthesized using the Hummers and Hoffman's method and the liquid phase deposition method. TiO 2 /GO nanocomposite was characterized through the analyses of transmission electron microscopy (TEM), X-ray diffraction (XRD), Energy Dispersive X-ray (EDX) spectroscopy, Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy. In addition, properties of the surface area and pore size were determined by N 2 adsorption-desorption and the Barrett-Joyner-Halenda methods. After modification, the nanocomposite properties showed successful stabilization of TiO 2 on the graphene substrate and reduction of the recombinant carrier loads. By utilizing the proposed treatment, complete degradation of AO7 could be achieved under optimal operating parameters (pH = 5, initial concentration of AO7 dye = 50 mg/L, TiO 2 /GO nanocomposite dose = 0.5 g/L, UV light intensity = 36 W, ultrasonic wave intensity = 35 kHz, and reaction time = 30 min). Scavenging experiments confirmed that OH and h + radicals were the predominant species in the sonophotocatalytic degradation reactions of the AO7 dye. The stability study confirmed the excellent shelf life of the TiO 2 /GO nanocomposite, with only a slight reduction in the degradation efficiency of the AO7 dye (<8.27%) detected, after six consecutive cycles of the sonophotocatalytic process. Studies related to the degradability of the AO7 dye and the biodegradability of the effluent from the process showed that the applied sonophotocatalytic system was able to remove the TOC concentration by 83% after a reaction time of 30 min. Moreover, the increase in the BOD 5 /COD ratio was also a confirmation for the increase in biodegradability of the treated AO7 dye effluent. Finally, the toxicity test showed that the growth inhibition rate of Escherichia coli (E. coli), as a viability index, decreased to about 7.34% after a reaction time of 180 min. This result indicated the formation of compounds with low toxicity and molecular weight over the reaction time of the sonophotocatalytic process of AO7 dye., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

Published
2021
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