Interaction profiles in poly (amidoamine) dendrimer/montmorillonite or rice straw ash hybrids-immobilized magnetite nanoparticles governing their removal efficiencies of various pollutants in wastewater

Hassan, Salah A.; Darwish, Atef S.; Gobara, Heba M.; Abed-elsatar, Nour E.A.; Fouda, Safaa R.

doi:10.1016/j.molliq.2017.01.060

Cited by 28 publications

(7 citation statements)

References 77 publications

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“…(b) Synthetic path for the formation of magnetite @PAMAM/montmorillonite nanocomposites (left) and right magnetite @PAMAM/rice straw ash nanocomposites. Reproduced with permission from [167].…”

Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

“…These two hybrids although designed for optimal adsorption properties (NH 4 + , NO 3 − for magnetite @PAMAM/montmorillonite), (Hg 2− , Br − for magnetite @PAMAM/rice straw ash) also displayed oxidative degradation potential to xylenol-orange (~85%) and malachite-green (~99%) respectively. Mineralization in the first instance was justified by the interactions of the dye with the chemical linkage of magnetite NPs to amidic groups of PAMAM whereas in the second case by the anchorage of magnetite NPs to the terminal amine groups [167].…”

Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

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Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

et al. 2022

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Radially polymerized dendritic compounds are nowadays an established polymer category next to their linear, branched, and cross-linked counterparts. Their uncommon tree-like architecture is characterized by adjustable internal cavities and external groups. They are therefore exceptional absorbents and this attainment of high concentrations in their interior renders them ideal reaction media. In this framework, they are applied in many environmentally benign implementations. One of the most important among them is water purification through pollutant decomposition. Simple and composite catalysts and photo-catalysts containing dendritic polymers and applied in water remediation will be discussed jointly with some unconventional solutions and prospects.

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Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

et al. 2022

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“…These two hybrids although designed for optimal adsorption properties (NH4 + , NO3 -for Magnetite @PA-MAM/Montmorillonite), (Hg 2-, Brfor Magnetite @PAMAM/Rice Straw Ash) they also displayed oxidative degradation potential to xylenol-orange (~ 85%) and malachite-green (~ 99%) respectively. Mineralization in the first instance was justified by the interactions of the dye with the chemical linkage of Magnetite NPs to amidic groups of PAMAM whereas in the second case by the anchorage of Magnetite NPs to the terminal amine groups [155]. [154].…”

Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

“…(b) Synthetic path for the formation of Magnetite @PAMAM/Montmorillonite nanocomposites (left) and right Magnetite @PAMAM/Rice Straw Ash nanocomposites. Reproduced with permission from [155].…”

Section: Unconventional Catalysis Involving Dendritic Polymersmentioning

confidence: 99%

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

Arkas¹,

Anastopoulos²,

Giannakoudakis³

et al. 2021

Preprint

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Radially polymerized dendritic compounds are nowadays an established polymer category next to their linear, branched and cross-linked counterparts. Their uncommon tree-like architecture is characterized by adjustable internal cavities and external groups. They are therefore exceptional absorbents and this attainment of high concentrations into their interior renders them ideal reac-tion media. In this framework they are applied in many environmentally benign implementa-tions. One of the most important among them is water purification though pollutant decomposi-tion. Simple and composite catalysts and photo-catalysts containing dendritic polymers and ap-plied in water remediation will be discussed jointly with some unconventional solutions and fu-ture prospects.

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“…2 and Table 1. All isotherms are similar to CNTs (the mother sample) and classified to kind II according to IUPAC types [35][36][37][38][39]. The N2 was taken at minimal relative pressure P/Po, indicating the micropore filling from adsorbentadsorbate interaction and is distinct from the adsorption in micropore multilayer, which ascribed to the multilayer adsorption.…”

Section: Surface Area Measurementmentioning

confidence: 99%

Photocatalytic Degradation of Congo Red Dye via Multi-Walled Carbon Nanotubes Modified CuO and ZnO Nanoparticles under Visible Light Irradiation

2020

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The photocatalytic degradation of congo red dye (CR) using nanocomposites materials of multi-walled carbon nanotubes combined with some transition metal oxide under visible light irradiation was studied. Multi-walled carbon nanotubes were prepared via chemical vapour synthesis (CVS) and loaded with some transition elements as Cu, Zn, and Cu0.1Zn0.9O nanoparticles, where the ratio of metal was kept constant in all catalysts (20% M). Various Characteristic techniques were adopted such as X-Ray Diffraction (XRD), Nitrogen adsorption-desorption, Transmission Electron Microscope (TEM), Fourier Transform Infra-Red (FT-IR), Ultra Violet reflectance analysis (UV), Scanning Electron Microscope (SEM), Energy dispersive X-ray Spectroscopy (EDX), Photoluminescence (PL) spectroscopy and Raman spectroscopy. The results proved that the mother carbon nanotubes have a high surface area and total pore volume and are found to be 247m 2 /g and 0.569 cm 3 /g, respectively, and its surface area decreased upon loading the metal nanoparticles. Pore size distribution curve (PSD) exhibited a wide mesopore centered at 30 nm. TEM results revealed that Cu and Zn metals are randomly distributed and located at the nanotube's surface and the tips of the tube via the tip-growth mechanism. It is seen that the Zn/CNTs have a homogenously uniform diameter as compared to the neat CNTs. The nanocomposites' photodegradation% rank was Zn/CNT > Cu/CNT > Cu-Zn/CNT, which related mainly to the chemical composition of Zn/CNT composite. Zn/CNT composite showed the highest degradation efficiency among the prepared composites, which achieved 97.7% after 70 minutes under visible light irradiation. The mechanism of the photocatalytic degradation of congo red dye under visible light irradiation was discussed.

show abstract

Interaction profiles in poly (amidoamine) dendrimer/montmorillonite or rice straw ash hybrids-immobilized magnetite nanoparticles governing their removal efficiencies of various pollutants in wastewater

Cited by 28 publications

References 77 publications

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

Catalytic Neutralization of Water Pollutants Mediated by Dendritic Polymers

Photocatalytic Degradation of Congo Red Dye via Multi-Walled Carbon Nanotubes Modified CuO and ZnO Nanoparticles under Visible Light Irradiation

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