Spectral, antimicrobial, TGA and photocatalytic degradation studies of copper neem–urea complex using synthetic, nano and doped ZnO

Kumawat, Priyanka; Sharma, Rishabh; Sharma, Arun Kumar

doi:10.1080/03067319.2019.1651302

International Journal of Environmental Analytical Chemistry

2019

DOI: 10.1080/03067319.2019.1651302

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Spectral, antimicrobial, TGA and photocatalytic degradation studies of copper neem–urea complex using synthetic, nano and doped ZnO

Priyanka Kumawat

Rishabh Sharma

Arun Kumar Sharma³

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Cited by 6 publications

References 58 publications

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Super-Hydrophobic Silicon Carbide Reinforced Epoxy Resin Composites

Yan¹,

Tanida²,

Zhao³

et al. 2023

Surf. Rev. Lett.

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In marine, aviation and railway transportation, dirt, corrosion, and wear lead to rapid failure of equipment, and organic coating is the main protective means. Epoxy (EP) coating is a widely used film-forming material in organic coating. We report a new modification method — fluorine modified silicon carbide (F–SiC) modified EP coating. The hydrophobicity, wear resistance and corrosion resistance of the EP coating were improved by grafting fluorinated organic compound (F–SiC) onto the surface of silicon carbide particles and adding it to the EP coating. When the content of F–SiC is 3[Formula: see text]wt.%, compared with the EP coating without F–SiC, the contact angle between 3[Formula: see text]wt.% F–SiC EP coating and water increases by 63%, and the friction coefficient decreases by 73%. The corrosion resistance of 3[Formula: see text]wt.% F–SiC EP coating is about three orders of magnitude higher than that of the EP coating soaked for six days.

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Super-Hydrophobic Silicon Carbide Reinforced Epoxy Resin Composites

Yan¹,

Tanida²,

Zhao³

et al. 2023

Surf. Rev. Lett.

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A new 3D supramolecular Cu(ii) framework: Crystal structure and photocatalytic characteristics

Li,

Ren,

et al. 2023

Open Chemistry

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Reported here is a new Cu(ii) compound with the formula of {Cu4(μ 2-Cl)6(μ 4-O)(4-NH2-py)4} n (1, 4-NH2-py = 4-amino-pyridine). The analysis of X-ray diffraction shows that the complex 1 indicates a 0D separated skeleton with {Cu4(μ 2-Cl)6(μ 4-O)} tetranuclear cluster. The interactions of H-bond between the amino groups and μ 2-Cl anions from adjacent 0D cluster further extended this 0D cluster into a 3D supramolecular framework. In addition, this compound has excellent photocatalytic activities for the degradation of methyl blue under UV radiation. The cyclic testing results indicate that complex 1 exhibits good recyclability, as it can be repeated for as many as five cycles with no noticeable loss of performance, revealing its potential application in pollutant degradation within the environmental field.

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Solid State Kinetics and Antimicrobial Studies for Copper (II) Sesame and Copper (II) Groundnut Complexes with Substituted Benzothiazole Ligand

Meena

Sukhadia

Sharma

2021

LOC

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: The aim of this manuscript is to give an overview of new findings in the field of thermal degradation and antimicrobial studies for copper (II) sesame and copper (II) groundnut complexes with substituted benzothiazole ligand. Solid state kinetics and thermal degradation has attracted the attention of scientific community not only due to its numerous applications in environment, energy, waste water treatment, pollution control and green chemistry but also due to their wide range of biological activities. This work aims to explore the study of chemical steps of the investigated degradation and the evaluation of the kinetic and thermodynamic parameters of the newly synthesized biologically active complexes (CSBe and CGBe) derived from two different edible oils i.e. sesame and groundnut and ligand containing nitrogen, oxygen and sulphur atoms i.e. 2-amino-6- ethoxy benzothiazole. The studies include Coats-Redfern equation (CRE), Horowitz-Metzger equation (HME), Broido equation (BE) and PiloyanNovikova equation (PNE) for analysis of the degradation and energetic for each step using kinetic data. The observation suggests that CGBe takes longer time and higher temperature to decompose completely than CSBe. Antimicrobial activities against Staphylococus aureus of these compounds also have been analysed which may provide an important account of information about their industrial utilization. The TGA study reveals that CSBe and CGBe complexes undergoes stepwise thermal degradation of ligand-soap bond of complex and saturated and unsaturated fatty acid components of edible oils i.e. sesame and groundnut. The order of antimicrobial activities of the two complexes studied is – CSBe > CGBe These results reveals that nature of different nitrogen, oxygen and sulphur containing ligands coordinated with copper ion play a significant role in the inhibition activity.

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Spectral, antimicrobial, TGA and photocatalytic degradation studies of copper neem–urea complex using synthetic, nano and doped ZnO

Cited by 6 publications

References 58 publications

Super-Hydrophobic Silicon Carbide Reinforced Epoxy Resin Composites

Super-Hydrophobic Silicon Carbide Reinforced Epoxy Resin Composites

A new 3D supramolecular Cu(ii) framework: Crystal structure and photocatalytic characteristics

Solid State Kinetics and Antimicrobial Studies for Copper (II) Sesame and Copper (II) Groundnut Complexes with Substituted Benzothiazole Ligand

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