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90 articles for “copper”
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Agronomy of Rice Husks
Abstract: Rice husk and hull is the waste material of rice mill. These have been hard, fibrous and abraded capabilities. Bio active and biodegradable rice husk/hull have been studied to claim remaining form by firing at scaled opts of amorphous and crystal forms of silica. Metallic constitutive like iron, manganese, sodium, potassium, lead, copper have suggestive towards route to subscribe purest form after firing. Preparations out of raw forms have subjectively …
Published in International Journal of Agrochemistry · Vol. 6, Issue 1, 2020 · pp. 52–57 Read article
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Review on Antioxidant Evaluation of 1,2,3-triazole Derivatives Synthesized by Click Chemistry
Abstract: In this review, an important method for preparing 1,2,3-triazole from a simple reaction is considered within the topic of green chemistry, which is the reaction of the click chemistry of the azide-alkyne cycloaddition reaction in the presence of copper as a catalyst. This reaction is characterized by the preparation of 1,4 disubstituted 1,2,3-triazoles with a single isomer without the use of high temperature and by using a non-hazardous solvent and …
Published in International Journal of Green Chemistry · Vol. 7, Issue 1, 2021 · pp. 42–69 Read article
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Revolutionizing Nanoparticle’s Synthesis Through Green Chemistry: A Brief Review
Abstract: Abstract Nanotechnology has experienced remarkable strides in response to the pressing need for environmentally friendly synthesis routes, with a paramount focus on minimizing deleterious by-products. This paradigm shift has galvanized researchers to delve into green biotechnology alternatives, harnessing the potential of plant extracts to reduce metal ions efficiently and yield green nanoparticles. These resultant nanoparticles not only showcase significant potential as antimicrobial agents but also hold profound implications for advancements …
Published in International Journal of Green Chemistry · Vol. 9, Issue 2, 2023 · pp. 26–37 Read article
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A Study on the Effect of Current Density on Electrocatalytic Behavior of Ni–Co Alloy
Abstract: Active, stable and more efficient electrocatalysts are the requirements for water splitting applications. In this direction, the present paper presents the experimental results on electrolytic development of Ni–Co alloy coatings, and their application as electrode material for hydrogen evolution reactions (HER) and oxygen evolution reactions (OER). The Ni–Co alloy coatings were electrodeposited on copper substrate from a sulfate bath, using the glycerol as additive. The deposited coatings were then tested …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 1, 2017 · pp. 9–23 Read article
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Impact of Solid Waste Disposal on Soil Physicochemical Parameters and Selected Enzyme Activities: A Case Study from Nekede Dumpsite, Nigeria
Abstract: This study assessed the influence of solid waste disposal on soil physicochemical parameters in Nekede dumpsite Owerri, Imo state Nigeria. The study area is a solid waste dumpsite located between latitude 5° 25' 59.99"N and longitude 7°01'60.00"E DMS coordinates along No. 1 old Nekede road and beside the Otamiri river. The study area was partitioned into four (4) quadrants while facing the river with samples collected at three (3) different …
Published in International Journal of Environmental Chemistry · Vol. 9, Issue 2, 2023 · pp. 40–49 Read article
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Effect of TiO2 on HER Activity of Electrodeposited Zn–Ni Coatings
Abstract: This paper demonstrates the improved electrocatalytic behavior of Zn–Ni alloy coatings for alkaline hydrogen evolution reaction (HER), due to addition of TiO2 nanoparticles into the bath. Zn–Ni alloy coatings have been electrodeposited galvanostatically on copper, with wide compositional range (2.31–7.91 wt. % of Zn) at different current densities (c.d.) between 2.0 and 5.0 A dm-2. The electrocatalytic behaviors of all coatings have been studied for alkaline HER in 1.0 M …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 3, Issue 1, 2017 Read article
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Eco-friendly Color Production for Holi Celebration: A Mini Review
Abstract: Many synthetic colours formed from chemicals have adverse effects on environment. Biocolours are nowadays used in holi festival. Colours are also becoming integral part of modern day life. Use of colours are becoming a part of our everyday life. There is need of nontoxic colours in order to remove substances like lead, cadmium, chromium and cobalt entering in the food chain. Biocolours are mainly prepared from plant origins. The current …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 8, Issue 1, 2022 · pp. 7–12 Read article
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Synthesis of Nanoparticles from Plant Extract
Abstract: Green nanoparticle manufacturing has several applications in the environmental and medical fields. Green synthesis, in particular, aims to decrease the usage of harmful chemicals. The use of biological components like plants, for example, is generally thought to be safe. Plants also contain reducing and capping agents. This chapter covers the fundamentals of green chemistry as well as a review of plant-mediated nanoparticle synthesis and current applications. Nanoparticles include gold, silver, …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 9, Issue 2, 2023 · pp. 1–9 Read article
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Yamuna River Degradation due to Heavy Metals in Delhi-NCR: A Review
Abstract: Yamuna river, which is a heart river for Delhi-NCR, is the most-polluted river in the country. Highly populated Delhi-NCR pollute the river Yamuna in all aspects weather we talk about domestic or industrial waste; which I turn affect in increasing significance for ecological, evolutionary, and environmental reasons. Mythologically Yamuna River is associated with the Hindus but apart it fulfills the need of people in other way as well. The water …
Published in International Journal of Water Resources Engineering · Vol. 2, Issue 2, 2016 · pp. 19–23 Read article
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Rating of Water Quality of Rivers Water in Asari Toru L.G.A, Rivers State, Nigeria
Abstract: The aim of the assessment was to compute the water quality index (WQI) of Sama and Tema River at 20metres interval along horizontal direction of the river to determine the suitability of the water for purposes of public drinking, recreation and other usage. In this paper the functional parameters in evaluating quality of a water body were used in evaluating the water quality index (WQI) of the two river and …
Published in International Journal of Water Resources Engineering · Vol. 3, Issue 2, 2017 · pp. 62–69 Read article
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The Study of Electrical Performance of Perovskite (CH3NH3PbX3, X=I, Br, Cl) Solar Cell at Different Absorption Coefficient
Abstract: Electrical Performance and numerical simulation of perovskite solar cells were carried out utilizing perovskite materials such "methyl ammonium lead halide (MAPbX3, MA= CH3NH3, X=I, Br, Cl)" with different absorption coefficients with the help of SCAPS tools and calculated the open-circuit voltage (Voc), fill factor (FF), power conversion efficiency (PCE), and short-circuit current density (Jsc) of the MAPbI3, MAPbBr3 and MAPbCl3 material used as active layer, respectively. The hole transport layer …
Published in International Journal of Electrical Power System and Technology · Vol. 9, Issue 1, 2023 · pp. 16–22 Read article
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Wearable Textile Antenna for Body Centric Wireless Application
Abstract: This article introduces minimal effort wearable textile antenna with the absconded ground is proposed. The foreseen antenna can get the recurrence between 2.185 and 6.625 GHz. An examination between the measured result and the estimated result has been considered in this article. The foreseen wearable antenna is appropriate to get radio wave vitality accessible in the range of 2.185–6.625 GHz. Keywords: copper tape, flexible antenna and CST software, jeans substrate, …
Published in International Journal of Microwave Engineering and Technology · Vol. 4, Issue 2, 2018 · pp. 27–32 Read article
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Design and Analysis of Broadband Flexible Antenna for Remote System
Abstract: ABSTRACT In this anticipated antenna, jeans have been utilized as a substrate. The dielectric constant of substrate is 1.7 and patch has been made by copper tape. The benefits of jeans are long wearing, simple consideration attire, and cost effective. This anticipated antenna provides gain of 3.592 dBi at 5.27 GHz. In this paper, the analysis has been focused on S11, radiation pattern, directivity and polar plot. Keywords: Jeans, microstrip …
Published in International Journal of Microwave Engineering and Technology · Vol. 5, Issue 1, 2019 · pp. 19–23 Read article
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A Microstrip Rat-Race Coupler for Narrow-Band Operation in the X-Band
Abstract: This paper proposes, designs, describes, analyses, and simulates a novel microstrip rat-race coupler for narrow-band operations in the X-band (8 GHz to 12 GHz), namely the 9.5 GHz to 10.3 GHz sub-band. This proposed four-port passive microwave device was realized utilizing microstrip technology with pure copper (lossy) being used as a metal in the conducting layers (transmission and ground plates) and Rogers TMM6 (lossy) being used in the dielectric layer. …
Published in International Journal of Microwave Engineering and Technology · Vol. 7, Issue 1, 2021 · pp. 18–22 Read article
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A Meandered Spiral Antenna for Operation in the X-band
Abstract: This study proposes a wideband meandered spiral antenna based on microstrip technology for optimal operation in the X-band (8 GHz to 12 GHz). This design is based on a two-arm Archimedean spiral antenna with a coaxial feed line. This antenna exhibits good performance for operations in the X-band. This antenna was simulated with FR-4 being used as the dielectric and copper for the metallization and ground plane. This antenna was …
Published in International Journal of Telecommunications & Emerging Technologies · Vol. 4, Issue 2, 2018 · pp. 15–19 Read article
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Recent Advancement of Nanotechnology in Plant Disease Management
Abstract: Nanoparticles are small size particles having potential to work in large surface area. Size of nanoparticles vary from 1-100 nm. The composition of nano-formulation should break down quickly in the soil and sluggishly in plants with remnant levels under the regulatory standards in foodstuffs. The nanoparticle synthesis methods can be categorized into bottom-up or top-down method Physical- Ball milling, nanolithography, pulsed laser, electrochemical; Chemical- Vaccum deposition and vaporization, chemical vapor …
Published in International Journal of Applied Nanotechnology · Vol. 7, Issue 2, 2021 · pp. 34–42 Read article
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Basic Fundamentals of Different Solar Cells, Solar Energy Materials and Photovoltaic Performances
Abstract: Solar cell is one of the thrust areas of modern technology in the field of renewable energy. Crystalline semiconductor wafer based solar cells (SCs) (thicknesses almost 200–300 μm) mainly crystalline-Si or GaAs based solar cells are playing the legend role in last few decades. With technological revolution, thin film SCs (thickness range 1–2 μm), dye-sensitized or Graetzel, organic/polymer and plasmonic solar cell respectively are known as 2nd,3rd, 4th and 5th …
Published in International Journal of Energetic Materials · Vol. 1, Issue 1, 2015 · pp. 1–9 Read article
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Investigations of Ruthenium an Energetic Material
Abstract: The energy of ruthenium catalyzed degradative oxidation of methylparaben by the copper complex, is researched at 30ºC and at an ionic strength of 60 × 10−3mol dm−3. In the presence of catalyst ruthenium(III), the reaction between methyl and diperiodatocuprate in aqueous alkaline medium exhibits 1:1 stoichiometry.
Published in International Journal of Energetic Materials · Vol. 2, Issue 1, 2016 · pp. 27–30 Read article
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A Short Review on Surface Plasmon Polaritons (SPPs) and Its Applications
Abstract: A surface plasmon polariton (SPP) is a two-dimensional electromagnetic (EM) mode occurring at the interface of noble metals whose amplitude exponentially decay down to zero when going away from the boundary of the metal. In the last five decades, the investigation is done related to understanding of the excitation of SPPs and their interaction with the features related to the surface of metals. The dispersion of light from the nanostructured …
Published in International Journal of Energetic Materials · Vol. 5, Issue 1, 2019 · pp. 21–35 Read article
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Floral System Act as a Reservoir for Nanobiotechnology (Silver Nanoparticles)
Abstract: The coming era of Nanotechnology is considered the first book on the topic of nanotechnology. It consists of processing of separation, consolidation and deformation of materials by one atom or by one molecule. There are two main approaches used in nanotechnology such as 1) “bottom-up” approach in which materials or devices are built from components and assemble themselves chemically by the principles of molecular recognition 2) “top-down” approach reflects the …
Published in International journal of Nanobiotechnology · Vol. 1, Issue 1-2, 2015 · pp. 5–7 Read article