| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hallam, Kr
University of Bristol
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Creep cavitation evolution in polycrystalline copper under conditions of stress relaxationcitations
- 2023A novel approach for evaluating creep damage and cavitation in copper bicrystals subject to constant loadcitations
- 2022Investigating the mechanical behaviour of Fukushima MCCI using synchrotron Xray tomography and digital volume correlationcitations
- 2021Investigating the microstructure and mechanical behaviour of simulant "lava-like" fuel containing materials from the Chernobyl reactor unit 4 meltdowncitations
- 2021NiWO4-induced partial oxidation of MXene for photo-electrochemical detection of prostate-specific antigen
- 2019Carbon quantum dot coated Fe 3 O 4 hybrid composites for sensitive electrochemical detection of uric acidcitations
- 2018In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 2citations
- 2017In-situ, time resolved monitoring of uranium in BFS:OPC grout. Part 1:citations
- 2016An experimental and modelling evaluation of the deformation and fracture of quasi-brittle reticulated vitreous carbon foam
- 2016Chitin and carbon nanotube composites as biocompatible scaffolds for neuron growthcitations
- 2015Nuclear waste viewed in a new lightcitations
- 2015Focused ion Beam Analysis of Banana Peel and its Application for Arsenate ion Removal
- 2015An investigation on the persistence of uranium hydride during storage of simulant nuclear waste packagescitations
- 2009Spatial variation of residual stresses in a welded pipe for high temperature applicationscitations
- 2005Exploring the distribution of copper-Schiff base complex covalently anchored onto the surface of mesoporous MCM 41 silica
- 2005A strategy for accommodating residual stresses in the assessment of repair weldments based upon measurement of near surface stresses
Places of action
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article
Exploring the distribution of copper-Schiff base complex covalently anchored onto the surface of mesoporous MCM 41 silica
Abstract
A series of copper-Schiff base MCM 41 materials, synthesized by post-synthetic grafting, was studied by X-ray photoelectron spectroscopy (XPS) and nitrogen sorption (77 K) to explore distribution of the copper-Schiff base complex immobilized on the porous Si-MCM 41. Additional information on the physico-chemical properties of the functionalized materials was obtained by powder X-ray diffraction (XRD), atomic absorption spectroscopy (AAS), CHN microanalysis, FTIR spectroscopy, 29Si and 13C CP MAS NMR spectroscopy. The effect of copper-Schiff base complex loading and reaction times on the surface properties of Si-MCM 41 (surface area and pore parameters) in addition to its distribution within the Si-MCM 41 was explored by nitrogen sorption and XPS coupled with argon etching. Argon etching of a surface to a depth of 45A confirmed that the copper-Schiff base complex was distributed both on the external surface (pore end) and within the pores of Si-MCM 41. The amount of complex located in the pores at this depth was about onethird of the amount detected on the external surface of MCM 41. Nitrogen sorption isotherms measured at 77K confirmed the reduction in total pore volume and surface area was the result of pore narrowing of Si-MCM 41 following grafting of complex in the 8 h samples. A significant decrease in surface area and pore volume for the 20 h sample (longer reaction time), with the highest copper loading (0.65 mmol g1), confirmed pore blocking in this material. The uneven distribution of the copper complex between the external and internal surface of Si-MCM 41 was attributed to the bulky nature of the complex, which restricted access to the pores. ; A series of copper-Schiff base MCM 41 materials, synthesized by post-synthetic grafting, was studied by X-ray photoelectron spectroscopy (XPS) and nitrogen sorption (77 K) to explore distribution of the copper-Schiff base complex immobilized on the porous Si-MCM 41. Additional information on the physico-chemical properties of the functionalized materials was ...