Enhanced bactericidal action and dye degradation of spicy roots’ extract-incorporated fine-tuned metal oxide nanoparticles

Haider, Ali; Ijaz, Muhammad; Imran, Muhammad; Naz, Misbah; Majeed, Hamid; Khan, Jawaria Ali; Ali, Muhammad Muddassir; Ikram, Muhammad

doi:10.1007/s13204-019-01188-x

Cited by 90 publications

(64 citation statements)

References 27 publications

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“…Utilization of solar light and semiconductors for photocatalytic purpose is still a research hotspot, which is found wide applications in energy conversion and environmental remediation [1,2]. Nano-heterojunctions have also received attention that has to be taken seriously, because they can be applied to various aspects and have achieved extraordinary results in many potential applications [3][4][5][6][7][8]. Furthermore, due to its advantages of high efficiency, environmentally friendly, and renewable energy, photocatalytic antibacterial technology has an irreplaceable role in environmental governance and sterilization [9,10].…”

Section: Introductionmentioning

confidence: 99%

Understanding the Structural-Dependent Photocatalytic Antibacterial Activity: a Case Study of Ag Modified BiVO4

et al. 2020

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In this work, Ag/BiVO 4 heterostructural photocatalysts were developed in order to reveal exceptional structuraldependent photoinduced charge migration kinetics as well as the underlying photocatalytic antibacterial dynamic process. The structure-dependent interface of BiVO 4 and Ag nanoparticles was successfully constructed to improve the photoinduced interface charge transfer efficiency and interface correlation. DFT calculation indicated that a net charge of about 0.33 e between Ag and tz-BiVO 4 was achieved by extraordinary interface charge transfer, being far larger than that between Ag and ms-BiVO 4. Larger net charge has consequences on mobility of charge carriers of tz-BiVO 4 that can raise the migration and separation of charge carriers for Ag/tz-BiVO 4 heterojunction. Fine interfacial contact between Ag and tz-BiVO 4 led to the optimized photocatalytic performance toward E. coli inactivation, being predominately higher than that of tz-BiVO 4 , ms-BiVO 4 , and Ag/ms-BiVO 4 catalysts. Besides photocatalytic activity, the thermocatalytic inactivation activity of Ag/tz-BiVO 4 also exhibited a factor of about 7.2 and 3.1 times higher than that of tz-BiVO 4 and Ag/ms-BiVO 4. Trapping and EPR measurements suggested that the structural-dependent photocatalytic activity of Ag/BiVO 4 mainly originated from the pronounced variation of the capability to produce H 2 O 2 active species, where the capability of generating H 2 O 2 over Ag/tz-BiVO 4 is highly accelerated. Moreover, it cannot be ignored that this study provides an ideal candidate for many aspects, such as environmental and water pollution caused by pathogenic microorganisms and disinfection of medical materials, food packaging, household materials, and public places, etc.

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Section: Introductionmentioning

confidence: 99%

Understanding the Structural-Dependent Photocatalytic Antibacterial Activity: a Case Study of Ag Modified BiVO4

et al. 2020

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“…So, these developments improves or enhance the quality of lots of nano-products as well as, it causes economics savings. [1][2][3][4][5][6][7] Cerium oxide nanoparticles (CeO 2 -NPs) have a cubic uorite structure with each cerium atom surrounded by 8 atoms of oxygen and each oxygen atom surrounded by 4 cerium atoms. When an element with a lower oxidation number than that of a cerium atom enters CeO 2 -NPs, oxygen is removed, resulting in oxygen defects in the crystalline structure.…”

Section: Introductionmentioning

confidence: 99%

Nickel-doped cerium oxide nanoparticles: biosynthesis, cytotoxicity and UV protection studies

2020

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“…Bar graph represents negligible bactericidal activity for sample C3 (TaSe 3 ) and C4 (Nb 2 Se 3 ) due to the presence of selenium (Se) since it is an essential micronutrient that enhances bacterial growth and decreases the antibacterial potential of samples [84]. The marked decrease in bacterial growth in case of tellurites with an increase in nanoparticles concentration is attributed to the formation of reactive oxygen species (ROS) that causes oxidative stress as a result of the redox reaction of metal ions, which inhibits the growth of particular enzymes and destroys the bacterial DNA leading to the death of bacteria [85]. The overall charge on harvested composites was positive while the bacterial cell wall is anionic in nature.…”

Section: Resultsmentioning

confidence: 99%

Comparative Study of Selenides and Tellurides of Transition Metals (Nb and Ta) with Respect to its Catalytic, Antimicrobial, and Molecular Docking Performance

et al. 2020

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The present research is a comparative study that reports an economical and accessible method to synthesize niobium (Nb) and Tantalum (Ta) selenides and tellurides with useful application in the removal of pollutants in textile, paper, and dyeing industries as well as in medical field. In this study, solid-state process was used to generate nanocomposites and various characterization techniques were employed to compare two groups of materials under investigation. Structure, morphology, elemental constitution, and functional groups of synthesized materials were analyzed with XRD, FESEM coupled with EDS, FTIR, and Raman spectroscopy, respectively. HR-TEM images displayed nanoscale particles with tetragonal and monoclinic crystal structures. The optical properties were evaluated in terms of cutoff wavelength and optical band gap using UV-visible spectroscopy. A comparative behavior of both groups of compounds was assessed with regards to their catalytic and microcidal properties. Extracted nanocomposites when used as catalysts, though isomorphs of each other, showed markedly different behavior in catalytic degradation of MB dye in the presence of NaBH 4 that was employed as a reducing agent. This peculiar deviation might be attributed to slight structural differences between them. Escherichia coli and Staphylococcus aureus (G-ve and + ve bacteria, respectively) were designated as model strains for in vitro antibacterial tests of both clusters by employing disk diffusion method. Superior antibacterial efficacy was observed for telluride system (significant inhibition zones of 26-35 mm) compared with selenide system (diameter of inhibition zone ranged from 0.8 mm to 1.9 mm). In addition, molecular docking study was undertaken to ascertain the binding interaction pattern between NPs and active sites in targeted cell protein. The findings were in agreement with antimicrobial test results suggesting NbTe 4 to be the best inhibitor against FabH and FabI enzymes.

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Enhanced bactericidal action and dye degradation of spicy roots’ extract-incorporated fine-tuned metal oxide nanoparticles

Cited by 90 publications

References 27 publications

Understanding the Structural-Dependent Photocatalytic Antibacterial Activity: a Case Study of Ag Modified BiVO4

Understanding the Structural-Dependent Photocatalytic Antibacterial Activity: a Case Study of Ag Modified BiVO4

Nickel-doped cerium oxide nanoparticles: biosynthesis, cytotoxicity and UV protection studies

Comparative Study of Selenides and Tellurides of Transition Metals (Nb and Ta) with Respect to its Catalytic, Antimicrobial, and Molecular Docking Performance

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