Magnetic properties of Ni/NiO nanocomposites synthesized by one step solution combustion method

Prabhu, V. Ganeshchandra; Shajira, P.S.; Lakshmi, N.; Bushiri, M. Junaid

doi:10.1016/j.jpcs.2015.09.001

Cited by 21 publications

(3 citation statements)

References 38 publications

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“…Given the non-charged character of L-CHT, the lower degradation performance cannot be associated with electrostatic repulsion or attraction effects. The most common reactive oxygen species involved in the degradation of organic pollutants following photocatalytic processes are hydroxyl radical and superoxide radical [26,76,77]. Note that the reduction potential of reactive oxygen species is dependent on the pH; therefore, lower oxidation abilities are expected at a higher pH.…”

Section: Understanding the Impact Of Operational Variables On Pesticide Removalmentioning

confidence: 99%

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

et al. 2021

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Green manufacturing of catalysts enables sustainable advanced oxidation processes and water treatment processes for removing trace contaminants such as pesticides. An environmentally friendly biosynthesis process produced high-surface-area CuO and NiO nanocatalysts using phytochemicals in the Capparis decidua leaf extract, which served as a reductant and influenced catalyst shape. Capparis decidua is a bushy shrub, widely distributed in dry and arid regions of Africa, Pakistan, India, Egypt, Jordan, Sudan, Saudi Arabia. The synthesized CuO and NiO nanoparticles were characterized by UV-vis spectroscopy (UV-vis), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) and thermo-gravimetric analysis/differential thermal analysis (TGA/DTA). The produced nanoparticles were spherical and flower-like in shape and have a characteristic face-centered cubic structure of CuO and NiO. Biosynthesized catalysts were photoactive and degraded recalcitrant pesticide Lambda-cyhalothrin (L-CHT). Photocatalytic degradation of L-CHT was affected by the initial L-CHT concentration, solution pH levels between 5 and 9, and photocatalyst concentration. The L-CHT removal percentage attained by CuO photocatalyst (~99%) was higher than for NiO photocatalyst (~89%). The degradation of L-CHT follows a pseudo-first-order kinetic model, and the apparent rate constant (kapp) decreased from 0.033 min−1 for CuO to 0.0084 min−1 for NiO photocatalyst. The novel flower-shaped nanoparticles demonstrated high stability in water and recyclability for removing L-CHT pesticide contamination in water.

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Section: Understanding the Impact Of Operational Variables On Pesticide Removalmentioning

confidence: 99%

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

et al. 2021

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“…The NiO and Ni nanoparticles (∼15–30 nm) in the nanoporous branch connect into grids, with the captured lattice fringes of 0.24 and 0.20 nm matching well with the (111) plane of NiO and (111) plane of Ni, respectively . And the mass contents of NiO and Ni in NiO/Ni/CC are 138.7 and 13.1 mg g –1 , respectively, with a mass density of 0.46 g cm –3 according to the VSM − and ICP data (Figure S4, Table S1). The uniform dispersion of the Ni and O element on and between carbon fibers in the CC bundle was further corroborated by the SEM-EDS element maps in Figure g, suggesting the multiscale porous NiO/Ni nanobranches are well dispersed among the vertically weaved carbon fiber bundles in CC.…”

Section: Resultsmentioning

confidence: 73%

High-Coulombic-Efficiency Lithium Metal Anodes Enabled by Three-Dimensional Lithiophilic Nanostructures with Multiscale Porosity

Zhang

Jin

et al. 2022

ACS Sustainable Chem. Eng.

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The formation and growth of lithium dendrites have dramatically limited the application of lithium metal anodes due to their shortened lifespan and safety hazards. We fabricated a three-dimensional (3D) matrix comprised of interconnected NiO/Ni nanobranches linking carbon fibers in carbon cloth (NiO/Ni/CC). In-situ transformation of NiO to Li 2 O/Ni renders stronger binding between the carbon cloth and lithium ions, guiding homogeneous lithium plating in nano-and microscale pores of nanobranches. In parallel, the macroscale pores between carbon fibers in a 3D framework facilitate the infiltration of electrolytes and thus regulate ion transport. The NiO/Ni/CC showcases excellent electrochemical reversibility upon lithium plating/stripping with an exceptionally high Coulombic efficiency of 99.97% for 800 cycles, and an excellent cycling stability of 700 h at a a high current density of 3 mA cm −2 for a high areal capacity of 3 mAh cm −2 . Moreover, full cells paired with both LiFePO 4 and LiNi 0.5 Co 0.2 Mn 0.3 O 2 cathodes demonstrate a superior rate capability and stability. This work manifests an efficient and scalable route on the dual design of lithiophilicity and porosity of 3D lithium metal hosts for high-performance lithium metal batteries.

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“…SCS was employed to fabricate MoO 3 -ZrO 2 [260] and Bi 2 O 3 -Bi 2 WO 6 [261] composites with notable visible light photocatalytic activities. This method was also successfully used to fabricate metal-oxide nanocomposites, for example, Ni/NiO [262] and Cu/Al 2 O 3 [263]. Ni/NiO nanomaterial can be used for absorption of dyes, lithium storage, and in magnetic devices.…”

Section: Oxide-based Composite Materialsmentioning

confidence: 99%

Self-propagating high-temperature synthesis of advanced materials and coatings

Левашов

Mukas'yan

Rogachev

et al. 2016

International Materials Reviews

302

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Self-propagating high-temperature synthesis (SHS) or combustion synthesis (CS) is a rapidly developing research area. SHS materials are being used in various fields, including mechanical and chemical engineering, medical and bioscience, aerospace and nuclear industries. The goal of the present paper is to provide a comprehensive state-of-the-art review and to analyse a critical mass of knowledge in the field of SHS materials and coatings. We also briefly discuss the history and scientific foundations of SHS along with an overview of the technological aspects for synthesis of different materials, including powders, ceramics, metal-ceramics, intermetallides, and composite materials. Application of CS in the field of surface engineering is also discussed focusing on two main routes for applying SHS to coating deposition: (i) single-step formation of the desired coatings and (ii) use of SHSderived powders, targets or electrodes in the coating deposition processes.

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Magnetic properties of Ni/NiO nanocomposites synthesized by one step solution combustion method

Cited by 21 publications

References 38 publications

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

Green Synthesis of Flower-Shaped Copper Oxide and Nickel Oxide Nanoparticles via Capparis decidua Leaf Extract for Synergic Adsorption-Photocatalytic Degradation of Pesticides

High-Coulombic-Efficiency Lithium Metal Anodes Enabled by Three-Dimensional Lithiophilic Nanostructures with Multiscale Porosity

Self-propagating high-temperature synthesis of advanced materials and coatings

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