Studies on catalytic degradation of organic pollutants and anti-bacterial property using biosynthesized CuO nanostructures

Sreeju, N.; Rufus, Alex; Philip, Daizy

doi:10.1016/j.molliq.2017.07.077

Cited by 73 publications

(16 citation statements)

References 57 publications

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“…The slope of the linear plot gives the rate constant of 0.0497 ± 0.0005 s −1 . The larger rate constant with Pd/C‐dots was achieved compared to other reported catalysts (Table S3, Supporting Information) showing the superior catalytic performance in the reduction of EY …”

Section: Resultsmentioning

confidence: 85%

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Dhenadhayalan

Hsin

Lin

2019

Adv Materials Inter

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and textile. [2,7] It can be readily bound to biomolecules and consequently used as a strain to tissue and cells. [8] However, the application of abnormal level of EY becomes toxic and unfriendly to both the environment and living things. The development of reduction/degradation of nitro compound and dye is thus much needed to convert these materials into harmless products. For instance, the 4-NP and EY could be catalytically reduced into the formation of 4-aminophenol and reduced form of EY, respectively, and believe that this process could become potentially an effective way to treat 4-NP and EY in polluted water. Accordingly, the design and development of proficient catalyst are a significant task for the catalytic reduction of 4-NP and EY with aspects of the efficient and fast process. The nanomaterial-based catalysts are enormously developed for their superior catalytic performance in the reduction of pollutants. [9][10][11][12][13] In general, metal nanoparticles are usually adopted for the catalysis application; especially palladium nanoparticles (Pd NPs) exhibited excellent catalytic activities. [14][15][16] Such metal nanoparticles play a vital role in the catalytic reduction showing effective performance compared to other bare nanomaterials. In order to further improve their catalytic activity, the metal nanoparticles were incorporated with diverse nanomaterials including carbon-based materials, transition metal dichalcogenides (TMD), and porous organic cages. [17][18][19][20][21][22][23][24][25] Compared to other fluorescent nanomaterials, the C-dots can be easily synthesized from different kind of sources including organic molecules, biowastes, proteins, amino acids, and so on. [26][27][28][29][30][31][32] Moreover, the surface of C-dots can be modified with several capping agents to improve their fluorescence properties according to the applications. [33][34][35][36][37] That's why the C-dots have been extensively utilized in the fields of chemo-and biosensors, and optoelectronic applications. Thus far, the C-dots are much less utilized in the catalysis as in the sensing application. By taking advantage of C-dots and Pd NPs, this work aims to develop a superior multifunctional nanohybrid in the multiple applications including chemical sensor and catalysis.With this intention, we have synthesized carbon-dots to encapsulate palladium nanoparticles (Pd/C-dots) by the photochemical method. Prior to the synthesis of Pd/C-dots, Palladium nanoparticles encapsulated in the carbon dots (Pd/C-dots) are demonstrated to play a role of multifunctional nanohybrid in the synergetic applications of sensor and catalysis. The photochemical method is applied to synthesize Pd/C-dots in which Pd nanoparticles (NPs) are dispersedly encapsulated by C-dots layer. The nanohybrid can function as a fluorescent sensor and reductive catalyst, due to the inherent properties of C-dots and Pd NPs, respectively. The Pd/C-dots exhibit a highly selective and sensitive detection toward the nickel (Ni 2+ ) ion with a detection limit of ...

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Section: Resultsmentioning

confidence: 85%

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Dhenadhayalan

Hsin

Lin

2019

Adv Materials Inter

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“…CuO nanoparticles synthesized using leaf extracts had shown good photocatalytic efficiency against methylene blue (MB) dye [45][46][47]. Moreover, Sreeju [48] had reported that the CuO-NPs are effective against bacteria killing. Biosynthesized CuO nanoparticles exhibit good antibacterial property for both gram-positive and gram-negative microbes [35].…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

Siddiqui¹,

2020

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HIGHLIGHTS• Eugenol (4-allyl-2-methoxyphenol) extracted from O. sanctum leaves is used as a natural reducing agent for the synthesis of CuO nanoflowers (NFs).• CuO-NFs can degrade methylene blue with an efficiency of 90%. • CuO-NFs offer a new vision to deactivate multi-drug microorganisms. A B S T R AC T C o pper oxide nanoflowers (CuO-NFs) have been synthesized through a novel green route using Tulsi leaves-extracted eugenol (4-allyl-2-methoxyphenol) as reducing agent. Characterizations results reveal the growth of crystalline singlephase CuO-NFs with monoclinic structure. The prepared CuO-NFs can effectively degrade methylene blue with 90% efficiency. They also show strong barrier against E. coli (27 ± 2 mm) at the concentration of 100 µg mL −1 , while at the concentration of 25 µg mL −1 weak barrier has been found against all examined bacterial organisms. The results provide important evidence that CuO-NFs have sustainable performance in methylene blue degradation as well as bacterial organisms.

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“…This strategy offers a convenient method to develop further studies envisaging the optimization of the substrate performance by adsorbing the magnetic particles with Au colloidal NPs with distinct SERS activity. The focus of this research was mainly to demonstrate the potential of such substrates for PG detection using the SERS effect, although there is potential for using the magneto-plasmonic properties of such materials in other water remediation processes [59,60]. For example, multifunctional nanosorbents combining magnetic and plasmonic components can be explored for the removal and laboratorial detection of a certain analyte or for monitoring a water purification process.…”

Section: Discussionmentioning

confidence: 99%

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

2017

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Sensitive and reliable procedures for detecting vestigial antibiotics are of great relevance for water quality monitoring due to the occurrence of such emergent pollutants in the aquatic environment. As such, we describe here research concerning the use of multifunctional nanomaterials combining magnetic and plasmonic components. These nanomaterials have been prepared by decorating magnetite nanoparticles (MNP) with colloidal gold nanoparticles (Au NPs) of distinct particle size distributions. Several analytical conditions were investigated in order to optimize the surface enhanced Raman scattering (SERS) detection of penicillin G (PG) dissolved in water. In particular, the dependence of the SERS signal by using distinct sized Au NPs adsorbed at the MNP was investigated. Additionally, microscopic methods, including Raman confocal microscopy, were employed to characterize the SERS substrates and then to qualitatively detect penicillin G using such substrates. For example, magnetic-plasmonic nanocomposites can be employed for magnetically concentrate analyte molecules and their removal from solution. As a proof of concept, we applied magneto-plasmonic nanosorbents in the removal of aqueous penicillin G and demonstrate the possibility of SERS sensing this antibiotic.

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Studies on catalytic degradation of organic pollutants and anti-bacterial property using biosynthesized CuO nanostructures

Cited by 73 publications

References 57 publications

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Multifunctional Nanohybrid of Palladium Nanoparticles Encapsulated by Carbon‐Dots for Exploiting Synergetic Applications

Biosynthesis of Flower-Shaped CuO Nanostructures and Their Photocatalytic and Antibacterial Activities

SERS Detection of Penicillin G Using Magnetite Decorated with Gold Nanoparticles

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