Application of fungal copper carbonate nanoparticles as environmental catalysts: organic dye degradation and chromate removal

Biomineralization is a ubiquitous process in organisms to produce biominerals, and a wide range of metallic nanoscale minerals can be produced as a consequence of the interactions of micro-organisms with metals and minerals. Copper-bearing nanoparticles produced by biomineralization mechanisms have a variety of applications due to their remarkable catalytic efficiency, antibacterial properties and low production cost. In this study, we demonstrate the biotechnological potential of copper carbonate nanoparticles (CuNPs) synthesized using a carbonate-enriched biomass-free ureolytic fungal spent culture supernatant. The efficiency of the CuNPs in pollutant remediation was investigated using a dye (methyl red) and a toxic metal oxyanion, chromate Cr(VI). The biogenic CuNPs exhibited excellent catalytic properties in a Fenton-like reaction to degrade methyl red, and efficiently removed Cr(VI) from solution due to both adsorption and reduction of Cr(VI). X-ray photoelectron spectroscopy (XPS) identified the oxidation of reducing Cu species of the CuNPs during the reaction with Cr(VI). This work shows that urease-positive fungi can play an important role not only in the biorecovery of metals through the production of insoluble nanoscale carbonates, but also provides novel and simple strategies for the preparation of sustainable nanomineral products with catalytic properties applicable to the bioremediation of organic and metallic pollutants, solely and in mixtures.

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Fabrication of ZnO nanocatalyst as an excellent heterogeneous catalyst applicant for Methyl Orange dye degradation in aqueous medium.

10.21203/rs.3.rs-888933/v1 ◽

2021 ◽

Author(s):

Zaheer Ahmed Mahar ◽

Ghulam Qadir Shar ◽

Aamna Balouch

Keyword(s):

Methyl Orange ◽

Aqueous Medium ◽

Photoelectron Spectroscopy ◽

Dye Degradation ◽

Catalytic Efficiency ◽

Chemical Degradation ◽

X Ray ◽

Nano Catalyst ◽

Methyl Orange Dye ◽

Short Time

Abstract The current paper describes the fabrication of an excellent and economical heterogeneous nanocatalyst for the degradation of methyl orange dye in aqueous medium. ZnO/PVP nanocatalyst has been successfully synthesized by the chemical degradation route, followed by ultrasonication. The size, shape and crystalline structure of synthesized ZnO/PVP nano composite was characterized by UV-visible spectroscopy, X-ray diffractometry, Dynamic Scattering Light, Zeta Potential, Fourier transform infrared spectroscopy, Scanning Electron Microscope, Energy Dispersive X-ray and X-ray photoelectron spectroscopy. To authenticate the catalytic efficiency of nanocatalyst, the fabricated ZnO/PVP nanocompoiste was screened for methyl orange dye degradation. Finally, synthesized nanocatalyst exhibited an admirable catalytic efficiency, above 98% of methyl orange degradation observed just in 90 seconds using least catalyst dose (150μg) in aqueous medium. The engineered ZnO/PVA nanocomposite shows several advantages over traditional methods for the degradation of hazard and toxic dyes, such as high percentage degradation, short time and minimum dose of nano catalyst and excellent reusability. It is suggested that this rare nanocatalyst may be used successfully on commercial level for degradation toxic pollutants.

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Persea americana seed extract mediated gold nanoparticles for mercury(ii)/iron(iii) sensing, 4-nitrophenol reduction, and organic dye degradation

RSC Advances ◽

10.1039/c9ra08233f ◽

2019 ◽

Vol 9 (68) ◽

pp. 39834-39842 ◽

Cited By ~ 1

Author(s):

Naveen Kumar Reddy Bogireddy ◽

Vivechana Agarwal

Keyword(s):

Gold Nanoparticles ◽

Organic Dyes ◽

Dye Degradation ◽

Catalytic Efficiency ◽

Seed Extract ◽

Persea Americana ◽

Nitrophenol Reduction ◽

Highly Sensitive ◽

Organic Dye Degradation ◽

Highly Sensitive Detection

Gold nanoparticles for highly sensitive detection of Hg(ii)/Fe(iii) and catalytic efficiency towards the reduction/degradation of 4-nitrophenol and organic dyes.

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Directed evolution improves the catalytic efficiency of TEV protease

10.1101/811570 ◽

2019 ◽

Author(s):

Mateo I Sanchez ◽

Alice Y Ting

Keyword(s):

Directed Evolution ◽

Catalytic Properties ◽

Light Exposure ◽

Catalytic Efficiency ◽

Tobacco Etch Virus ◽

Sequence Specificity ◽

Tobacco Etch Virus Protease ◽

Tev Protease ◽

Wide Range ◽

Catalytic Rate

AbstractTobacco etch virus protease (TEV) is one of the most widely-used proteases in biotechnology because of its exquisite sequence-specificity. A limitation, however, is its slow catalytic rate. We developed a generalizable yeast-based platform for directed evolution of protease catalytic properties. Protease activity is read out via proteolytic release of a membrane-anchored transcription factor, and we temporally regulate access to TEV’s cleavage substrate using a photosensory LOV domain. By gradually decreasing light exposure time, we enriched faster variants of TEV over multiple rounds of selection. Our S153N mutant (uTEV1Δ), when incorporated into the calcium integrator FLARE, improved the signal/background ratio by 27-fold, and enabled recording of neuronal activity in culture with 60-second temporal resolution. Given the widespread use of TEV in biotechnology, both our evolved TEV mutants and the directed evolution platform used to generate them, could be beneficial across a wide range of applications.

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Phylogenetically diverse bacteria isolated from tattoo inks, an azo dye-rich environment, decoloize a wide range of azo dyes

10.21203/rs.3.rs-540195/v1 ◽

2021 ◽

Author(s):

Seong Won Nho ◽

Xue Wen Cui ◽

Ohgew Kweon ◽

Jinshan Jin ◽

Huizhong Chen ◽

...

Keyword(s):

High Throughput ◽

Azo Dyes ◽

Azo Dye ◽

Dye Degradation ◽

Methyl Red ◽

Diverse Range ◽

Optical Absorbance ◽

Wide Range ◽

Systematic Understanding ◽

Tattoo Inks

Abstract Purpose: There has been an interest in the microbial azo dye degradation as an optional method for the treatment of azo dye-containing wastes. Tattoo ink is an extremely unique azo dye-rich environment, which never been explored in terms of microorganisms capable of degrading azo dyes. Previously, we isolated 81 phylogenetically diverse bacteria, belonging to 20 genera and 49 species, contaminated in tattoo inks. In this study, we investigated if these bacteria, which can survive in the azo dye-rich environment, have an ability to degrade azo dyes. Methods: We conducted a two-step azo dye degradation (or decolorization) assay. In step 1, a high-throughput degradability assay was done for 81 bacterial isolates using Methyl Red and Oragne II. In step 2, a further degradation assay was done for 10 selected bacteria with a representative of 11 azo dyes, including 3 commercial tattoo ink azo dyes. Degradation of azo dyes were calculated from measuring optical absorbance of souble dyes at specific wavelenths. Results: The initial high-throughput azo dye assay (step 1) showed that 79 isolates had a complete or partial degradation of azo dyes; >90% of Methyl Red and Orange II were degraded within 24 h, by 74 and 20 isolates, respectively. A further evaluation of azo dye degradability for 10 selected isolates in step 2 showed that the isolates, belonging to Bacillus , Brevibacillus , Paenibacillus , and Pseudomonas , exhibited an excellent decolorization ability for a wide range of azo dyes. Conclusions: This study showed that phylogenetically diverse bacteria, isolated from azo dye-rich tattoo inks, is able to degrade a diverse range of azo dyes, including 3 azo dyes used in commercial tattoo inks. Some of the strains would be good candidates for future studies to provide a systematic understanding of azo dye degradation mechanisms

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Controlled synthesis of CuS caved superstructures and their application to the catalysis of organic dye degradation in the absence of light

CrystEngComm ◽

10.1039/c4ce02120g ◽

2015 ◽

Vol 17 (6) ◽

pp. 1374-1380 ◽

Cited By ~ 49

Author(s):

Qun Wei Shu ◽

Jing Lan ◽

Ming Xuan Gao ◽

Jian Wang ◽

Cheng Zhi Huang

Keyword(s):

Methylene Blue ◽

Catalytic Properties ◽

Dye Degradation ◽

Organic Dye ◽

Controlled Synthesis ◽

One Pot ◽

Organic Dye Degradation

CuS caved superstructures with a variety of sizes and regular shapes were synthesized by an innovative one-pot method, which showed excellent catalytic properties evaluated by degradation of methylene blue (MB) without light.

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Silver nanoparticles: facile synthesis and their catalytic application for the degradation of dyes

RSC Advances ◽

10.1039/c5ra02909k ◽

2015 ◽

Vol 5 (33) ◽

pp. 25781-25788 ◽

Cited By ~ 26

Author(s):

Kamaldeep Sharma ◽

Gurpreet Singh ◽

Manoj Kumar ◽

Vandana Bhalla

Keyword(s):

Room Temperature ◽

Dye Degradation ◽

Catalytic Efficiency ◽

Organic Dye ◽

Facile Synthesis ◽

Catalytic Application ◽

Degradation Of Dyes ◽

Organic Dye Degradation ◽

Aldehyde Groups

The aggregates of pentacenequinone, HPB and PDI derivatives 3, 5 and 7 having aldehyde groups bind strongly with Ag+ and serve as reactors and stabilizers for the preparation of AgNPs at room temperature. In situ generated AgNPs show high catalytic efficiency for industrially important organic dye degradation.

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Bi3O4Br nanoplates as an efficient piezo-photocatalyst for organic dye degradation

Modern Physics Letters B ◽

10.1142/s0217984921501190 ◽

2021 ◽

pp. 2150119

Author(s):

Qin Zhou ◽

Jing Jiang

Keyword(s):

Ultrasonic Vibration ◽

Apparent Rate Constant ◽

Dye Degradation ◽

Catalytic Efficiency ◽

Organic Dye ◽

Charge Carriers ◽

Calcination Process ◽

Organic Dye Degradation ◽

Piezoelectric Field ◽

The Individual

The layered Bi3O4Br nanoplates were synthesized through a simple calcination process, which can simultaneously harvest visible light and ultrasonic vibration to realize the effective piezo-photocatalysis. The piezo-photocatalysis over the Bi3O4Br leads to a great enhancement in catalytic efficiency with respect to the pure photocatalysis or piezocatalysis. The apparent rate constant of piezo-photocatalysis for the degradation of MO achieves to be 0.008 min[Formula: see text], which is 5.20 and 1.51 times as high as the individual piezocatalysis and photocatalysis, respectively. This enhancement would be attributed to the built-in piezoelectric field induced by ultrasonic vibration facilitating the separation of charge carriers in photoexcited Bi3O4Br.

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Phylogenetically diverse bacteria isolated from tattoo inks, an azo dye-rich environment, decolorize a wide range of azo dyes

Annals of Microbiology ◽

10.1186/s13213-021-01648-2 ◽

2021 ◽

Vol 71 (1) ◽

Author(s):

Seong Won Nho ◽

Xuewen Cui ◽

Ohgew Kweon ◽

Jinshan Jin ◽

Huizhong Chen ◽

...

Keyword(s):

High Throughput ◽

Azo Dyes ◽

Azo Dye ◽

Dye Degradation ◽

Orange Ii ◽

Methyl Red ◽

Diverse Range ◽

Optical Absorbance ◽

Wide Range ◽

Tattoo Inks

Abstract Purpose There has been an interest in the microbial azo dye degradation as an optional method for the treatment of azo dye-containing wastes. Tattoo ink is an extremely unique azo dye-rich environment, which have never been explored in terms of microorganisms capable of degrading azo dyes. Previously, we isolated 81 phylogenetically diverse bacteria, belonging to 18 genera and 52 species, contaminated in tattoo inks. In this study, we investigated if these bacteria, which can survive in the azo dye-rich environment, have an ability to degrade azo dyes. Methods We conducted a two-step azo dye degradation (or decolorization) assay. In step 1, a high-throughput degradability assay was done for 79 bacterial isolates using Methyl Red and Orange II. In step 2, a further degradation assay was done for 10 selected bacteria with a representative of 11 azo dyes, including 3 commercial tattoo ink azo dyes. Degradation of azo dyes were calculated from measuring optical absorbance of soluble dyes at specific wavelengths. Results The initial high-throughput azo dye assay (step 1) showed that 79 isolates had a complete or partial degradation of azo dyes; > 90% of Methyl Red and Orange II were degraded within 24 h, by 74 and 20 isolates, respectively. A further evaluation of azo dye degradability for 10 selected isolates in step 2 showed that the isolates, belonging to Bacillus, Brevibacillus, Paenibacillus, and Pseudomonas, exhibited an excellent decolorization ability for a wide range of azo dyes. Conclusions This study showed that phylogenetically diverse bacteria, isolated from azo dye-rich tattoo inks, is able to degrade a diverse range of azo dyes, including 3 azo dyes used in commercial tattoo inks. Some of the strains would be good candidates for future studies to provide a systematic understanding of azo dye degradation mechanisms.

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Magnetic Nanoparticles of Fe3O4 Biosynthesized by Cnicus Benedictus Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

10.20944/preprints202007.0223.v1 ◽

2020 ◽

Author(s):

Álvaro de Jesús Ruíz-Baltazar ◽

Simón Yobanny Reyes-López ◽

Daniel Larrañaga-Ordáz ◽

Nestor Méndez-Lozano ◽

Marco Antonio Zamora-Antuñano ◽

...

Keyword(s):

Magnetic Nanoparticles ◽

Dye Degradation ◽

Chemical Reduction ◽

Low Cost ◽

Antibacterial Properties ◽

Natural Antioxidants ◽

Sustainable Chemistry ◽

Endemic Plant ◽

Magnetite Fe3o4 ◽

Organic Dye Degradation

Currently, the use of sustainable chemistry as an ecological alternative for the generation of products or processes, free of polluting substance has assumed a preponderant role. The aim of this work is propose a bioinspired, facile, at low cost, non-toxic and environmentally friendly alternative to obtaining magnetic nanoparticles whit a majority phase of magnetite (Fe3O4). Is important to empathize that the synthesis was based on the chemical reduction through the Cnicus Benedictus extract, whose use as reducing agent has not been reported in the synthesis of iron oxides nanoparticles. In addition, the Cnicus Benedictus is abundant endemic plant in Mexico, with several medicinal properties and a large number of natural antioxidants. The obtained nanoparticles exhibited significant magnetic and antibacterial properties and an enhanced photocatalytic activity. The crystallite size of the Fe3O4 nanoparticles (Fe3O4 NP’s) was calculated by Williamson-Hall method. The photocatalytic properties of the Fe3O4 NP´s were studied by kinetics absorptions models in the Congo red (CR) degradation. Finally the antibacterial effect of the Fe3O4 NP´s were evaluated mediated the Kirby-Bauer method against E. coli and S. aureus bacteria. This route offers a green alternative to obtain Fe3O4 NP´s with remarkable magnetic, photocatalytic and antibacterial properties.

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Magnetic Nanoparticles of Fe3O4 Biosynthesized by Cnicus benedictus Extract: Photocatalytic Study of Organic Dye Degradation and Antibacterial Behavior

Processes ◽

10.3390/pr8080946 ◽

2020 ◽

Vol 8 (8) ◽

pp. 946

Author(s):

Álvaro de Jesús Ruíz-Baltazar ◽

Nestor Méndez-Lozano ◽

Daniel Larrañaga-Ordáz ◽

Simón Yobanny Reyes-López ◽

Marco Antonio Zamora Antuñano ◽

...

Keyword(s):

Magnetic Nanoparticles ◽

Dye Degradation ◽

Chemical Reduction ◽

Low Cost ◽

Antibacterial Properties ◽

Natural Antioxidants ◽

Sustainable Chemistry ◽

Endemic Plant ◽

Fe3o4 Nps ◽

Organic Dye Degradation

Currently, the use of sustainable chemistry as an ecological alternative for the generation of products or processes that are free of a polluting substance has assumed a preponderant role. The aim of this work is to propose a bioinspired, facile, low cost, non-toxic, and environmentally friendly alternative to obtaining magnetic nanoparticles with a majority phase of magnetite (Fe3O4). It is important to emphasize that the synthesis was based on the chemical reduction through the Cnicus benedictus extract, whose use as reducing agent has not been reported in the synthesis of iron oxides nanoparticles. In addition, the Cnicus benedictus is an abundant endemic plant in Mexico with several medicinal properties and a large number of natural antioxidants. The obtained nanoparticles exhibited significant magnetic and antibacterial properties and an enhanced photocatalytic activity. The crystallite size of the Fe3O4 nanoparticles (Fe3O4 NP’s) was calculated by the Williamson-Hall method. The photocatalytic properties of the Fe3O4 NP’s were studied by kinetics absorptions models in the Congo red (CR) degradation. Finally, the antibacterial effects of the Fe3O4 NPs were evaluated mediated the Kirby–Bauer method against Escherichia coli and Staphylococcus aureus bacteria. This route offers a green alternative to obtain Fe3O4 NPs with remarkable magnetic, photocatalytic, and antibacterial properties.

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