Browsing NTNU Open by Author "Fossum, Jon Otto"

A nano-silicate material with exceptional capacity for CO2 capture and storage at room temperature

Cavalcanti, Leide Passos; Kalantzopoulos, Georgios N.; Eckert, J.; Knudsen, Kenneth Dahl; Fossum, Jon Otto (Journal article; Peer reviewed, 2018)

In order to mitigate climate change driven by the observed high levels of carbon dioxide (CO2) in the atmosphere, many micro and nano-porous materials are being investigated for CO2 selectivity, capture and storage (CCS) ...

A simple way for targeted delivery of an antibiotic: In vitro evaluation of a nanoclay-based composite

Valdes, Leslie; Perez, Irela; De Menorval, Louis Charles; Altshuler, Ernesto; Fossum, Jon Otto; Rivera, Aramis (Journal article; Peer reviewed, 2017)

The sodium-modified form of fluorohectorite nanoclay (NaFh) is introduced as a potential drug carrier, demonstrating its ability for the controlled release of the broad-spectrum antibiotic Ciprofloxacin through in vitro ...

Active matter - Collective Motion due to Quincke Rotation

Kristiansen, Tommy Fjelde (Master thesis, 2015)

his thesis investigates Quincke induced collective motion. It is mostly a qualitative study, but it attempts to connect Quincke induced collective motion to the field of active matter as a whole. The thesis has two objectives. ...

Active structuring of colloidal armour on liquid drops

Dommersnes, Paul; Rozynek, Zbigniew; Mikkelsen, Alexander; Castberg, Rene; Kjerstad, Knut; Hersvik, Kjetil; Fossum, Jon Otto (Journal article; Peer reviewed, 2013)

Adsorption and assembly of colloidal particles at the surface of liquid droplets are at the base of particle-stabilized emulsions and templating. Here we report that electrohydrodynamic and electro-rheological effects ...

Análise da Reflexão 001 da Níquel-Fluorohectorita por Difração de Raios X Síncrotron

de Oliveira, J. S.; Michels, Leander; Sousa, Marcelo Henrique; Fossum, Jon Otto; Da Silva, G.J.; Mundim, Kleber Carlos; Ribeiro, L. (Journal article; Peer reviewed, 2016)

In the present work X-ray diffraction was used in order to observe the stable hydration states of the clay nickel-fluorohectorite. The diffraction patterns were measured as function of relative humidity and temperature. ...

Bright, noniridescent structural coloration from clay mineral nanosheet suspensions

Michels Brito, Paulo Henrique; Dudko, Volodymyr; Wagner, Daniel; Markus, Paul; Papastavrou, Georg; Michels Brito Miranda, Leander Edward; Breu, Josef; Fossum, Jon Otto (Journal article; Peer reviewed, 2022)

Carbon Dioxide Intercalation in Sodium Fluorohectorite Clay

Rolseth, Erlend Granbo (Master thesis, 2011)

Wide angle X-ray Scattering (WAXS) measurements of the layered synthetic silicatesodium fluorohectorite (NaFh) when exposed to pressurized carbon dioxideare reported. With a custom made sample holder placed on top of a ...

Ciprofloxacin intercalated in fluorohectorite clay: Identical pure drug activity and toxicity with higher adsorption and controlled release rate

Dos Santos, Éverton Carvalho; Rozynek, Zbigniew Jerzy; Hansen, Elisabeth Lindbo; Hartmann-Petersen, R; Klitgaard, RN; Løbner-Olesen, Anders; Michels, Leander; Mikkelsen, Alexander; Plivelic, Tomás S.; Bordallo, HN; Fossum, Jon Otto (Journal article; Peer reviewed, 2017)

Different natural clay minerals, including halloysite, montmorillonite and kaolinite, have been proven to be efficient drug carriers providing for high and long lasting drug concentrations owing to their adsorption capacity ...

Clay alignment in electric fields

Castberg, Rene; Rozynek, Zbigniew; Fossum, Jon Otto; Måløy, Knut Jørgen; Dommersnes, Paul; Flekkøy, Eirik Grude (Journal article; Peer reviewed, 2012)

The response of rotational alignment of lithium fluorohectorite (Li-Fh) to an external electric field has been studied by employing image analysis. Large aggregates consisting of many single clay particles were prepared ...

Clay-Oil Droplet Suspensions in Electric Field

Kjerstad, Knut Brøndbo (Master thesis, 2012)

Silicone oil droplets containing synthetic smectite clay submerged in another immiscible organic oil have been studied by observing clay particle movement, oil circulation and drop deformation when an electric field is ...

CO2 Adsorption Enhanced by Tuning the Layer Charge in a Clay Mineral

Hunvik, Kristoffer William Bø; Loch, Patrick; Wallacher, Dirk; Kirch, Alexsandro; Cavalcanti, Leide Passos; Rieß, Martin; Daab, Matthias; Josvanger, Vegard; Grätz, Sven; Yokaichiya, Fabiano; Knudsen, Kenneth Dahl; Miranda, Caetano Rodrigues; Breu, Josef; Fossum, Jon Otto (Peer reviewed; Journal article, 2021)

Due to the compact two-dimensional interlayer pore space and the high density of interlayer molecular adsorption sites, clay minerals are competitive adsorption materials for carbon dioxide capture. We demonstrate that ...

Complex behaviors of clay particles in air and CO2

Dahesh, Mohsen (Master thesis, 2011)

ABSTRACTPart IThe shear rheology of nano-clay particles when dispersed in liquid CO2 underelevated pressure using the Couette geometry is studied. A high pressure attachmentwith two different measuring systems - the double ...

Complex flows in active and driven granular matter: a study of turbulent and intermittent dynamics

Roman, Etien Martinez (Doktoravhandlinger ved NTNU;2022:174, Doctoral thesis, 2022)

Turbulence and intermittency are manifestations of non-linear dynamics that have central influence in transport mechanisms in fluids. These phenomena have been mainly studied in inertial flows, but this situation is recently ...

Continuous water adsorption states promoted by Ni2+ confined in a synthetic smectite

Altoé, Mário Alberto Simonato; Michels, Leander; dos Santos, Everton; Droppa Jr., Roosevelt; Grassi, Giovanni; Ribeiro, Luciano; Knudsen, Kenneth; Bordallo, Heloisa N.; Fossum, Jon Otto; da Silva, Geraldo José (Journal article, 2016)

The water adsorption isotherms of Ni-fluorohectorite have been obtained from the relative humidity dependence of X-ray diffraction intensities, and continuous transitions between the stable hydration states were observed. ...

Controlled microfluidic emulsification of oil in a clay nanofluid: Role of salt for Pickering stabilization

Gholamipour-Shirazi, A; Carvalho, MS; Fossum, Jon Otto (Journal article; Peer reviewed, 2016)

Research on emulsions is driven by their widespread use in different industries, such as food, cosmetic, pharmaceutical and oil recovery. Emulsions are stabilized by suitable surfactants, polymers, solid particles or a ...

Dehydration and Intercalation of CO2 in Fe-Fluorohectorites and Thermogravimetric Analysis of Cation Exchanged Fluorohectorites

Nordvik, Torstein (Master thesis, 2023)

Karbonfangst i leire er blitt undersøkt som et resultat av økende CO2 i atmosfæren. CO2 kan absorberes i leire [1] og i denne oppgaven er denne absorpsjon undersøkt for prøvene Fe(III)-FHT og Fe(III)-FHT-sim, som er ...

Designing and developing X-ray diffraction cell for pressure and temperature controlled absorption studies of greenhouse gases.

Josvanger, Vegard (Master thesis, 2019)

Smektitt er en type leire som på grunn av sin svakt negative lag-ladning og ladningskompenserende kation, har evnen til å adsorbere karbondioksid. Leiren har stor adsorbsjonskapasitet og finnes rikelig mengder i takbergarter ...