Synthesis of needle like nano composite of rGO-Mn2O and their applications as photo-catalyst

Zubair, Naila; Jamil, Saba; Fatima, Shumaila; Khan, Shanza Rauf; Khan, Muhammad Usman; Janjua, Muhammad Ramzan Saeed Ashraf

doi:10.1016/j.cplett.2020.137874

Cited by 5 publications

(2 citation statements)

References 38 publications

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“…Oxygen is introduced into the chamber to form the oxide flms using a second ion source, which can also be utilized to ionize the introduced oxygen. Ionized oxygen is more reactive than molecular oxygen and the required ionized oxygen fow for full oxidation of the sputtered material is comparatively lower [3,23]. Te whole assembly is enclosed inside a 450-liter chamber.…”

Section: Methodsmentioning

confidence: 99%

Continuously Varying Thickness Interference Bandpass Filter for the Visible Spectral Range: Using Ion Beam Sputter Deposition

Ullah

Amirzada

Jahan

et al. 2022

Advances in Materials Science and Engineering

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Optical bandpass filters, used to restrict certain wavelengths while allowing other wavelengths to pass, are a common element in many optical devices, such as spectroscopic sensors and hyperspectral imagers. Such filters can be implemented using interference filters, which operate on the principle of constructive and destructive interference. In this work, an interference bandpass filter with continuously varying thicknesses of the constituent films is designed and fabricated for the visible spectral range. Niobium pentoxide and silicon dioxide are used as the filter materials due to the high refractive index contrast between them, resulting in a smaller number of required material films. Ion beam sputter deposition is used as the deposition method due to its ability to produce accurate thickness high optical quality films. The fabricated filter has a transmission band of 130 nm, i.e., 470–600 nm, and can block wavelengths as low as 300 nm and as high as 1080 nm, which is sufficient for use with silicon-based detectors in the visible spectral range. The maximum and minimum transmission inside the transmission band is 96% and 71%, respectively, with an average transmission of 88%. The transmission outside the transmission band is less than 1.6%.

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Section: Methodsmentioning

confidence: 99%

Continuously Varying Thickness Interference Bandpass Filter for the Visible Spectral Range: Using Ion Beam Sputter Deposition

Ullah

Amirzada

Jahan

et al. 2022

Advances in Materials Science and Engineering

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“…Graphene was synthesized using the Hummers method [52]. We used the same graphene that was already prepared and explained in our paper: Ali et al [29].…”

Section: Synthesis Of Graphenementioning

confidence: 99%

Assembly of Smart Microgels and Hybrid Microgels on Graphene Sheets for Catalytic Reduction of Nitroarenes

et al. 2022

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Poly (N-isopropylacrylamide-acrylic acid) [p(NIPAM-AAc)] microgel was successfully fabricated using the precipitation polymerization method. Silver (Ag) nanoparticles and graphene oxide (G) were used to fabricate the following hybrid microgels: Ag-p(NIPAM-AAc) (Ag-HMG), Ag-G-p(NIPAM-AAc) (Ag-G-HMG), and G-p(NIPAM-AAc) (G-HMG). Ag-HMG, Ag-G-HMG, and G-HMG were characterized using a Zetasizer and UV-Vis spectroscopy. The reduction of a series of different compounds with comparable and distinct chemical structures was catalyzed by synthesized Ag-HMG, Ag-G-HMG, and G-HMG hybrid microgels. The average size of Ag nanoparticles was found to be ~50 nm. Ag nanoparticles were synthesized within microgels attached to G sheets. Ag-p(NIPAM-AAc), Ag-G-p(NIPAM-AAc), and G-p(NIPAM-AAc) hybrid microgels were used for the catalytic reduction of nitroarenes and dyes. By comparing their apparent rate constant (kapp), reduction duration, and percentage reduction, the activity of HMG (hybrid microgel) as a catalyst towards different substrates was investigated. Graphene sheets play role in electron relay among Ag nanoparticles and microgels.

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Zirconium nanoparticles-poly (N-isopropylacrylamide-methacrylic acid) hybrid microgels decorated graphene sheets for catalytic reduction of organic pollutants

Ali

Shah

Jamil

et al. 2021

Chemical Physics Letters

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Synthesis of needle like nano composite of rGO-Mn2O and their applications as photo-catalyst

Cited by 5 publications

References 38 publications

Continuously Varying Thickness Interference Bandpass Filter for the Visible Spectral Range: Using Ion Beam Sputter Deposition

Continuously Varying Thickness Interference Bandpass Filter for the Visible Spectral Range: Using Ion Beam Sputter Deposition

Assembly of Smart Microgels and Hybrid Microgels on Graphene Sheets for Catalytic Reduction of Nitroarenes

Zirconium nanoparticles-poly (N-isopropylacrylamide-methacrylic acid) hybrid microgels decorated graphene sheets for catalytic reduction of organic pollutants

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