Amine Modified Magnetic Diatomite Particles as an Effcicent Adsorbent for Pecticide Removal

10.20944/preprints202107.0287.v1 ◽

2021 ◽

Author(s):

İhsan Alacabey

Keyword(s):

Surface Area ◽

Emerging Contaminants ◽

High Surface ◽

High Surface Area ◽

Scan Ning Electron Microscopy ◽

Promising Alternative ◽

Pesticide Removal ◽

Spin Resonance ◽

Ft Ir ◽

Surface Modified

Pesticides are one of the most critical emerging contaminants which are highly toxic for the environment and have potential risk to human health. In this study, surface-modified magnetic diatomite particles (m-DE-APTES) have been suc-cessfully synthesized and used as a sorbent for the removal of endosulfan from an aqueous solution. Magnetic diatomite particles with surface modification were characterized by Fourier transform-infrared spectroscopy (FT-IR), scan-ning electron microscopy (SEM), energy dispersive X-ray (EDX), electron spin resonance (ESR), and surface area measurements. Characterization results sug-gest that magnetic diatomite has a high surface area and porous structure. In addition, m-DE-APTES has higher adsorption capacity (97.2 mg/g) for en-dosulfan pesticide than unmodified diatomite particles (DE) (16.6 mg/g). The adsorption data fit the Langmuir model (R2=0.9905), and the adsorption process took place spontaneously with the values of ΔGo as -2.576. In conclusion, the surface-modified diatomite particles are promising alternative adsorbents for pesticide removal from aqueous solutions.

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Electron spin resonance and volumetric investigations of oxygen adsorption on high surface area CoO–MgO

Journal of the Chemical Society Faraday Transactions 1 Physical Chemistry in Condensed Phases ◽

10.1039/f19797500533 ◽

1979 ◽

Vol 75 (0) ◽

pp. 533 ◽

Cited By ~ 27

Author(s):

Dante Cordischi ◽

Valerio Indovina ◽

Manlio Occhiuzzi ◽

Angelo Arieti

Keyword(s):

Electron Spin Resonance ◽

Surface Area ◽

Electron Spin ◽

High Surface ◽

High Surface Area ◽

Oxygen Adsorption ◽

Spin Resonance

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Synthesis of a high-surface area V2O5/TiO2–SiO2 catalyst and its application in the visible light photocatalytic degradation of methylene blue

RSC Advances ◽

10.1039/c9ra03866c ◽

2019 ◽

Vol 9 (42) ◽

pp. 24368-24376 ◽

Cited By ~ 4

Author(s):

Ajay Kumar Adepu ◽

Srinath Goskula ◽

Suman Chirra ◽

Suresh Siliveri ◽

Sripal Reddy Gujjula ◽

...

Keyword(s):

Methylene Blue ◽

Visible Light ◽

Surface Area ◽

High Surface ◽

High Surface Area ◽

Bet Surface Area ◽

Titanium Silicate ◽

Ft Ir ◽

Synthesized Materials ◽

Visible Light Photocatalytic

In the present study, we synthesized several high-surface area V2O5/TiO2–SiO2 catalysts (vanado titanium silicate, VTS). The synthesized materials are characterized by PXRD, FE-SEM/EDAX, TEM, BET-surface area, FT-IR, UV-Vis, XPS, fluorescence and photocatalytic studies.

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ChemInform Abstract: ELECTRON SPIN RESONANCE AND VOLUMETRIC INVESTIGATIONS OF OXYGEN ADSORPTION ON HIGH SURFACE AREA COBALT OXIDE-MAGNESIUM OXIDE

Chemischer Informationsdienst ◽

10.1002/chin.197918031 ◽

1979 ◽

Vol 10 (18) ◽

Author(s):

D. CORDISCHI ◽

V. INDOVINA ◽

M. OCCHIUZZI ◽

A. ARIETI

Keyword(s):

Electron Spin Resonance ◽

Surface Area ◽

Cobalt Oxide ◽

Magnesium Oxide ◽

Electron Spin ◽

High Surface ◽

High Surface Area ◽

Oxygen Adsorption ◽

Spin Resonance

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A Novel N-Doped Nanoporous Bio-Graphene Synthesized from Pistacia lentiscus Gum and Its Nanocomposite with WO3 Nanoparticles: Visible-Light-Driven Photocatalytic Activity

Molecules ◽

10.3390/molecules26216569 ◽

2021 ◽

Vol 26 (21) ◽

pp. 6569

Author(s):

Maryam Afsharpour ◽

Mehdi Elyasi ◽

Hamedreza Javadian

Keyword(s):

Visible Light ◽

Surface Area ◽

High Surface ◽

High Surface Area ◽

Nanoporous Structure ◽

Pistacia Lentiscus ◽

Nitrogen Doped ◽

Visible Light Driven ◽

Ft Ir ◽

Natural Carbon

This paper reports the synthesis of a new nitrogen-doped porous bio-graphene (NPBG) with a specific biomorphic structure, using Pistacia lentiscus as a natural carbon source containing nitrogen that also acts as a bio-template. The obtained NPBG demonstrated the unique feature of doped nitrogen with a 3D nanoporous structure. Next, a WO3/N-doped porous bio-graphene nanocomposite (WO3/NPBG-NC) was synthesized, and the products were characterized using XPS, SEM, TEM, FT-IR, EDX, XRD, and Raman analyses. The presence of nitrogen doped in the structure of the bio-graphene (BG) was confirmed to be pyridinic-N and pyrrolic-N with N1 peaks at 398.3 eV and 400.5 eV, respectively. The photocatalytic degradation of the anionic azo dyes and drugs was investigated, and the results indicated that the obtained NPBG with a high surface area (151.98 m2/g), unique electronic properties, and modified surface improved the adsorption and photocatalytic properties in combination with WO3 nanoparticles (WO3-NPs) as an effective visible-light-driven photocatalyst. The synthesized WO3/NPBG-NC with a surface area of 226.92 m2/g displayed lower bandgap and higher electron transfer compared with blank WO3-NPs, leading to an increase in the photocatalytic performance through the enhancement of the separation of charge and a reduction in the recombination rate. At the optimum conditions of 0.015 g of the nanocomposite, a contact time of 15 min, and 100 mg/L of dyes, the removal percentages were 100%, 99.8%, and 98% for methyl red (MR), Congo red (CR), and methyl orange (MO), respectively. In the case of the drugs, 99% and 87% of tetracycline and acetaminophen, respectively, at a concentration of 10 mg/L, were removed after 20 min.

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