Efficient template based synthesis of Ni nanorods by etching porous alumina for their enhanced photocatalytic activities against Methyl Red and Methyl Orange dyes

Khan, Shakeel Ahmad; Shahid, Sammia; Nazir, M.; Kanwal, Sadia; Zaman, Sabah; Sarwar, Muhammad Nazim; Haroon, Shah Muhammad

doi:10.1016/j.molstruc.2019.02.038

Cited by 25 publications

(11 citation statements)

References 21 publications

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“…Similar results were reported by Arasu et al and Sheikhshoaie et al in the degradation of MB with MnO and Mn3O4 photocatalyst under the sunlight spectrum, respectively [48,54]. The rate of disintegration of the synthetic dyes entirely relies on physical features such as less bandgap, highly crystalline nature, shape, large pore size, and specific surface area of the photochemical-catalyst [54,55]. In our study, green-synthesized AI-MnO NAPs demonstrated the moderate rate of photocatalytic degradation of MB.…”

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyesupporting

confidence: 82%

“…The rate of disintegration of the synthetic dyes entirely relies on physical features such as less bandgap, highly crystalline nature, shape, large pore size, and specific surface area of the photochemical-catalyst [54,55]. In our study, green-synthesized AI-MnO NAPs demonstrated the moderate rate of photocatalytic degradation of MB.…”

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 65%

“…Based on our findings, the possible mode of action of AI-MnO NAPs (photocatalyst) to disintegrate the MB dye into other degraded products is as follows [54,55]:…”

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 89%

“…In photocatalysis reactions, the recyclability and stability of the photocatalyst have significant importance [3,55]. The recyclability and stability of the green-synthesized photocatalyst were assessed.…”

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 99%

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Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Khan

Shahid

et al. 2020

Biomolecules

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We report the synthesis of MnO nanoparticles (AI-MnO NAPs) using biological molecules of Abutilon indicum leaf extract. Further, they were evaluated for antibacterial and cytotoxicity activity against different pathogenic microbes (Escherichia coli, Bordetella bronchiseptica, Staphylococcus aureus, and Bacillus subtilis) and HeLa cancerous cells. Synthesized NAPs were also investigated for photocatalytic dye degradation potential against methylene blue (MB), and adsorption activity against Cr(VI) was also determined. Results from Scanning electron microscope (SEM), X-ray powder diffraction (XRD), Energy-dispersive X-ray (EDX), and Fourier-transform infrared spectroscopy (FTIR) confirmed the successful synthesis of NAPs with spherical morphology and crystalline nature. Biological activity results demonstrated that synthesized AI-MnO NAPs exhibited significant antibacterial and cytotoxicity propensities against pathogenic microbes and cancerous cells, respectively, compared with plant extract. Moreover, synthesized AI-MnO NAPs demonstrated the comparable biological activities results to standard drugs. These excellent biological activities results are attributed to the existence of the plant’s biological molecules on their surfaces and small particle size (synergetic effect). Synthesized NAPs displayed better MB-photocatalyzing properties under sunlight than an ultraviolet lamp. The Cr(VI) adsorption result showed that synthesized NAPs efficiently adsorbed more Cr(VI) at higher acidic pH than at basic pH. Hence, the current findings suggest that Abutilon indicum is a valuable source for tailoring the potential of NAPs toward various enhanced biological, photocatalytic, and adsorption activities. Consequently, the plant’s biological molecule-mediated synthesized AI-MnO NAPs could be excellent contenders for future therapeutic applications.

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Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyesupporting

confidence: 82%

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 65%

“…Based on our findings, the possible mode of action of AI-MnO NAPs (photocatalyst) to disintegrate the MB dye into other degraded products is as follows [54,55]:…”

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 89%

Section: Photocatalytic Activity Against Methylene Blue (Mb) Dyementioning

confidence: 99%

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Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Khan

Shahid

et al. 2020

Biomolecules

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“…The synthesized ZnONPs successfully degraded the MB dye in a concentration‐dependent manner and the complete degradation was achieved on using 200 mg ZnONPs. Recently, metallic nanoparticles have gained considerable attention in the field of catalytic activation of industrial wastes (Khan et al , ). In the literature, data regarding the photocatalytic activity of ZnONPs synthesized by microbes are rare.…”

Section: Discussionmentioning

confidence: 99%

Biosynthesis of zinc oxide nanoparticles with antimicrobial, anticancer, antioxidant and photocatalytic activities by the endophytic Alternaria tenuissima

2020

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Aims Zinc oxide nanoparticles (ZnONPs) were successfully synthesized using the culture filtrate of the endophytic fungus Alternaria tenuissima as a rapid, eco‐friendly and cost‐effective method. Methods and Results The rapid synthesis of ZnONPs was completed after 20 min as confirmed by UV–Vis spectroscopy. The synthesized ZnONPs showed a single‐phase crystalline structure. Dynamic light scattering analysis showed that the synthesized ZnONPs were monodispersed and the recorded polydispersity index value was 0·311. Zeta potential value of –23·92 mV indicated the high stability of ZnONPs. Transmission electron microscope revealed the spherical shape and the mean particle size was 15.45 nm. Functional groups present in the prepared samples of ZnONPs were confirmed by Fourier transform infrared spectroscopy. Additionally, the biological activities of in vitro antimicrobial, anticancer, antioxidant as well as the photocatalytic activities were evaluated. ZnONPs showed broad spectrum of antimicrobial potential against all the tested plant and human pathogens. Based on the MTT assay, ZnONPs inhibited the proliferation of normal human melanocytes, human breast and liver cancer cell lines with IC50 concentrations of 55·76, 18·02 and 16·87 µg ml−1. ZnONPs exhibited promising antioxidant potential with 50% inhibitory concentration of 102·13 µg ml−1. Moreover, ZnONPs showed efficient degradation of methylene blue dye. Conclusions The synthesized ZnONPs showed promising activities that can be better explored in the near future for many medical, agricultural and industrial applications. Significance and Impact of the Study This study suggests a new and alternate approach with the excellent biotechnological potentiality for the production of ZnONPs which could open up the way for the industrial manufacture of nanoparticles using microbial platforms.

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Application of visible light active photocatalysis for water contaminants: A review

Sun

O’Connell

2022

Water Environment Research

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Organic water pollutants are ubiquitous in the natural environment arising from domestic products as well as current and legacy industrial processes. Many of these organic water pollutants are recalcitrant and only partially degraded using conventional water and wastewater treatment processes. In recent decades, visible light active photocatalyst has gained attention as a non‐conventional alternative for the removal of organic pollutants during water treatment, including industrial wastewater and drinking water treatment. This paper reviews the current state of research on the use of visible light active photocatalysts, their modified methods, efficacy, and pilot‐scale applications for the degradation of organic pollutants in water supplies and waste streams. Initially, the general mechanism of the visible light active photocatalyst is evaluated, followed by an overview of the major synthesis techniques. Because few of these photocatalysts are commercialized, particular attention was given to summarizing the different types of visible light active photocatalysts developed to the pilot‐scale stage for practical application and commercialization. The organic pollutant degradation ability of these visible light active photocatalysts was found to be considerable and in many cases comparable with existing and commercially available advanced oxidation processes. Finally, this review concludes with a summary of current achievements and challenges as well as possible directions for further research. Practitioner Points Visible light active photocatalysis is a promising advanced oxidation process (AOP) for the reduction of organic water pollutants. Various mechanisms of photocatalysis using visible light active materials are identified and discussed. Many recent photocatalysts are synthesized from renewable materials that are more sustainable for applications in the 21st century. Only a small number of pilot‐scale applications exist and these are outlined in this review.

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Efficient template based synthesis of Ni nanorods by etching porous alumina for their enhanced photocatalytic activities against Methyl Red and Methyl Orange dyes

Cited by 25 publications

References 21 publications

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Green Synthesis of MnO Nanoparticles Using Abutilon indicum Leaf Extract for Biological, Photocatalytic, and Adsorption Activities

Biosynthesis of zinc oxide nanoparticles with antimicrobial, anticancer, antioxidant and photocatalytic activities by the endophytic Alternaria tenuissima

Application of visible light active photocatalysis for water contaminants: A review

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