Magnetically separable chicken feathers: a biopolymer based heterogeneous catalyst for the oxidation of organic substrates

Patnam, Padma L.; Bhatt, Mukesh; Singh, Raghuvir; Saran, Saurabh; Jain, Suman L.

doi:10.1039/c6ra03978b

Cited by 9 publications

(8 citation statements)

References 45 publications

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“…Due to its keratin structure, the feather is a suitable substrate for heterogeneous catalysis and works very well in hydrogenation reactions [ 49 ], heterocycle click synthesis [ 50 ] and organics oxidations [ 51 ]. Nevertheless, little is known about reactions involving feathers as a catalyst.…”

Section: Feathersmentioning

confidence: 99%

Appealing Renewable Materials in Green Chemistry

et al. 2022

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In just a few years, chemists have significantly changed their approach to the synthesis of organic molecules in the laboratory and industry. Researchers are encouraged to approach “greener” reagents, solvents, and methodologies, to go hand in hand with the world’s environmental matter, such as water, soil, and air pollution. The employment of plant and animal derivates that are commonly regarded as “waste material” has paved the way for the development of new green strategies. In this review, the most important innovations in this field have been highlighted, paying due attention to those materials that have played a crucial role in organic reactions: wool, silk, and feather. Moreover, we decided to focus on the other most important supports and catalysts in green syntheses, such as proteins and their derivates. Different materials have shown prominent activity in the adsorption of metals and organic dyes, which has constituted a relevant scope in the last two decades. We intend to furnish a complete screening of the application given to these materials and contribute to their potential future utilization.

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Section: Feathersmentioning

confidence: 99%

Appealing Renewable Materials in Green Chemistry

et al. 2022

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“…The developed catalyst could be easily recycled and exhibited higher stability and activity than the bare magnetic nanoparticles. 123 Recycled eggshell biowaste was used as a starting material to prepare an eggshell/Fe 3 O 4 nanocomposite. This material was evaluated as a catalyst enabling the synthesis of 1,8-dioxooctahydroxanthenes under solvent-free conditions.…”

Section: Journal Of Agricultural and Food Chemistrymentioning

confidence: 99%

“…Complete selectivity of the reactions and high conversions were observed. The developed catalyst could be easily recycled and exhibited higher stability and activity than the bare magnetic nanoparticles …”

Section: Magnetically Modified Biological Wastes and Their Applicationsmentioning

confidence: 99%

Magnetically Modified Agricultural and Food Waste: Preparation and Application

Šafařı́k

Baldíková

Procházková

et al. 2018

J. Agric. Food Chem.

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The annual food and agricultural waste production reaches enormous numbers. Therefore, an increasing need to valorize produced wastes arises. Waste materials originating from the food and agricultural industry can be considered as functional materials with interesting properties and broad application potential. Moreover, using an appropriate magnetic modification, smart materials exhibiting a rapid response to an external magnetic field can be obtained. Such materials can be easily and selectively separated from desired environments. Magnetically responsive waste derivatives of biological origins have already been prepared and used as efficient biosorbents for the isolation and removal of both biologically active compounds and organic and inorganic pollutants and radionuclides, as biocompatible carriers for the immobilization of diverse types of (bio)molecules, cells, nano- and microparticles, or (bio)catalysts. Potential bactericidal, algicidal, or anti-biofilm properties of magnetic waste composites have also been tested. Furthermore, low cost and availability of waste biomaterials in larger amounts predetermine their utilization in large-scale processes.

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“…Furthermore, exploiting thermophilic bacteria for ZnO NPs biosynthesis has many benefits, including the production of active biomolecules within the supernatant, which can convert metal ions to metal NPs. [17] Nanotechnology has transformed the developmental process of a wide range of novel materials, for vivid applications including therapeutic applications for early symptom identification, treatment, and prevention. [11,[18][19][20] ZnO NPs are synthesized by various methods such as the physical (vapor deposition, thermal evaporation, arc plasma method, laser ablation), [21][22][23][24][25] wet-chemical methods (microemulsion, sol-gel synthesis, [26] precipitation, [27] hydrothermal and solvothermal method) [28] and the biological synthesis (bacteria, yeast, fungi, and plant extracts).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Zinc Oxide Nanoparticles Using Thermophilic Bacteria Isolated from Arid Region of Rajasthan

et al. 2022

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This publication is part of a Special Collection for the Conference on ''Cutting-Edge Research in Materials and Sustainable Chemical Technologies'' (CRMSCT-2022). Please follow to visit the whole collection.Four bacterial strains were used for biosynthesis of zinc oxide (ZnO) nanoparticles (NPs), namely Bacillus tropicus SHJP5, Bacillus tropicus LKJP6, Aeribacillus composti SJP25, and Aeribacillus pallidus SJP28. The synthesized nanoparticles were characterized using UV-Visible spectroscopy (UV-Vis), Fourier transform infrared spectroscopy (FTIR), Field Emission Scanning Electron Microscopy (FESEM), Photoluminescence spectroscopy (PL), Thermogravimetric analysis (TGA), and X-ray diffraction (XRD). The XRD pattern of NPs (bio-synthesized) shows the polycrystalline hexagonal wurtzite structure with the three major planes (100), (002), and (001). The average crystallite size determined by the Debye-Scherrer equation is between 8-54 nm. A reduction in crystallite size of as-prepared nanoparticles was observed in the presence of bacterial strains. The FTIR analysis reveals the amide, carboxyl, and hydroxyl groups found on the surface of biosynthesized ZnO NPs. These groups behave as reducing and stabilizing agents. The UV-Vis spectra reveal the absorption bands for control, SHJP5, LKJP6, SJP25, and SJP28 at 373, 363, 382, 358, and 380 nm respectively. The corresponding energy band gap was found to be 3. 324, 3.415, 3.246, 3.463, and 3.263 eV respectively, with the decreasing size of the nanoparticles produced by bacterial strains. The FESEM analysis confirms the hexagonal structure of bio-synthesized ZnO NPs. The nanoparticles have a uniform distribution of spherical shape except for the strain Aeribacillus pallidus LKJP6 which exhibits uniform and thin nanorods. Minimum inhibitory concentration (MIC) tests against E. coli (7.1 mg/ml) and S. aureus (3.2 mg/ml) verified the antibacterial activity of produced ZnO NPs. The use of isolated strains for the extracellular manufacture of ZnO NPs is encouraged in this work. To the best of our knowledge, this might be the first study that has been presented that shows the structural, optical, and surface morphology of a thermophilic bacterium, Bacillus tropicus SHJP5, Bacillus tropicus LKJP6, Aeribacillus composti SJP25, and Aeribacillus pallidus SJP28 for the biosynthesis of ZnO NPs in particular.

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Magnetically separable chicken feathers: a biopolymer based heterogeneous catalyst for the oxidation of organic substrates

Cited by 9 publications

References 45 publications

Appealing Renewable Materials in Green Chemistry

Appealing Renewable Materials in Green Chemistry

Magnetically Modified Agricultural and Food Waste: Preparation and Application

Synthesis and Characterization of Zinc Oxide Nanoparticles Using Thermophilic Bacteria Isolated from Arid Region of Rajasthan

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