A sustainable transparent biotemplate from fish scale waste for ultralow volume high-sensitive UV-Vis spectroscopy

Parimi, Divya S.; Bhatt, Chandra S.; Bollu, Tharun K.; U, Madhura H.; Jacob, Noah; Motapothula, M.; Suresh, Anil K.

doi:10.1039/d1gc02569d

Cited by 11 publications

(3 citation statements)

References 32 publications

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“…Unless otherwise stated, a 1 cm × 1 cm portion of the Au@megacatalyst was used for all the physical characterizations. UV–vis spectra were performed on a multi-scanner sky spectrophotometer (Thermo Scientific, USA) operated at a wavelength resolution of 1 nm by placing the catalyst in an adapter designed by us so as to measure the absorbance of thin films. The surface morphology of the AuNPs formed on the surface eggshell was assessed for the intact samples using HR-SEM (Thermo Scientific, USA).…”

Section: Methodsmentioning

confidence: 99%

Sustainable Bioengineering of Gold Structured Wide-Area Supported Catalysts for Hand-Recyclable Ultra-Efficient Heterogeneous Catalysis

Bhatt

Parimi

Bollu

et al. 2022

ACS Appl. Mater. Interfaces

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Metal nanoparticles grafted within inert and porous wide-area supports are emerging as recyclable, sustainable catalysts for modern industry applications. Here, we bioengineered gold nanoparticle-based supported catalysts by utilizing the innate metal binding and reductive potential of eggshell as a sustainable strategy. Variable hand-recyclable wide-area three-dimensional catalysts between ∼80 ± 7 and 0.5 ± 0.1 cm2 are generated simply by controlling the size of the support. The catalyst possessed high-temperature stability (300 °C) and compatibility toward polar and nonpolar solvents, electrolytes, acids, and bases facilitating ultra-efficient catalysis of accordingly suspended substrates. Validation was done by large-volume (2.8 liters) dye detoxification, gram-scale hydrogenation of nitroarene, and the synthesis of propargylamine. Moreover, persistent recyclability, monitoring of reaction kinetics, and product intermediates are possible due to physical retrievability and interchangeability of the catalyst. Finally, the bionature of the support permits ∼76.9 ± 8% recovery of noble gold simply by immersing in a royal solution. Our naturally created, low-cost, scalable, hand-recyclable, and resilient supported mega-catalyst dwarfs most challenges for large-scale metal-based heterogeneous catalysis.

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Section: Methodsmentioning

confidence: 99%

Sustainable Bioengineering of Gold Structured Wide-Area Supported Catalysts for Hand-Recyclable Ultra-Efficient Heterogeneous Catalysis

Bhatt

Parimi

Bollu

et al. 2022

ACS Appl. Mater. Interfaces

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“…Fish scales are one such biowaste that are released in millions of tons globally, and if unutilized can lead to landfills, disposal expenses, environmental hazards, and pathogen propagation. Therefore, as an approach for sustainable advancement, fish scales have been transformed to valuable products such as television displays, piezoelectric nanogenerators, and biotemplate for spectroscopy 26 and are applied for heavy metal remediation, wound healing, and blood grouping. 27 In this work, simply by exposing the gold precursor to fish scales under extreme alkaline conditions and elevated temperatures, remarkably stable monodispersed AuNPs of ∼12 ± 4 nm are biosynthesized in a single step, devoid of additional surface modifications.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sustainable Exscalar Monodispersed Gold Nanoparticles with Enhanced Dispersion Stability and Biocompatibility for Theragnostics

Bhatt,

Rajavel,

Parimi

et al. 2023

ACS Appl. Nano Mater.

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The stability and dispersity of gold nanoparticles (AuNPs) against various biological, physicochemical, and physiological transformations while retaining biocompatibility are fundamental for their myriad utilization in various theragnostic applications. Besides, it would be highly imperative if the AuNPs could be generated using environmentally sustainable procedures. Remarkably stable, monodispersed AuNPs with robustness against centrifugation, freeze-thawing, lyophilization, acids, bases, electrolytes, and polar solvents are generated by utilizing fish scale wastes. The AuNPs inherited self-integrity and dispersity across various clinically significant biological fluids including phosphate buffer saline, growth mediums, human blood serum, saliva, and urine. Human blood serum interactions revealed negligible protein corona consortium and biocompatibility with no hemolysis or cytotoxicity toward peripheral blood mononuclear cells. Astonishingly, endurance to all these biological, physicochemical, and physiological discrepancies was comparable to that of universal stabilizer thiolated polyethylene glycol (PEG) sorbed AuNPs. Such high stability and wide dispersity are attributed to the firm shielding of AuNPs by the oligopeptide fragments excreted from the scales, which also endowed AuNP functionalization to diverse drugs. Notably, our results develop a biogenic production of monodispersed AuNPs with natural sturdiness against harsh laboratory and clinical environments to substitute the plunged biocompatibility of PEG-Au sulfur chemisorption and PEG-Au physisorption approaches for various imaging and drug delivery applications.

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Ag nanoparticle-embedded fish scales as SERS substrates for sensitive detection of forever chemical in real samples

Kumar,

Jinachandran,

Ponnusamy

et al. 2024

Applied Surface Science

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A sustainable transparent biotemplate from fish scale waste for ultralow volume high-sensitive UV-Vis spectroscopy

Abstract: UV-Vis spectroscopy is a versatile analytical tool used to examine the nature of various synthetic, biological and clinical molecules for pharmaceutical and environmental applications. The analysis is typically performed in...

Cited by 11 publications

References 32 publications

Sustainable Bioengineering of Gold Structured Wide-Area Supported Catalysts for Hand-Recyclable Ultra-Efficient Heterogeneous Catalysis

Sustainable Bioengineering of Gold Structured Wide-Area Supported Catalysts for Hand-Recyclable Ultra-Efficient Heterogeneous Catalysis

Sustainable Exscalar Monodispersed Gold Nanoparticles with Enhanced Dispersion Stability and Biocompatibility for Theragnostics

Ag nanoparticle-embedded fish scales as SERS substrates for sensitive detection of forever chemical in real samples

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