D
David M. Tobaldi
Researcher at University of Aveiro
Publications - 122
Citations - 3591
David M. Tobaldi is an academic researcher from University of Aveiro. The author has contributed to research in topics: Photocatalysis & Anatase. The author has an hindex of 32, co-authored 107 publications receiving 2577 citations. Previous affiliations of David M. Tobaldi include University of Bologna & University of Modena and Reggio Emilia.
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Biomass fly ash geopolymer monoliths for effective methylene blue removal from wastewaters
TL;DR: In this article, fly ash-based monoliths were used as adsorbents for the removal of methylene blue from synthetic wastewaters, and the maximum uptake reported was 15.4 mg/g.
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Oxygen vacancies, the optical band gap (Eg) and photocatalysis of hydroxyapatite: Comparing modelling with measured data
Vladimir Bystrov,Clara Piccirillo,David M. Tobaldi,Paula M. L. Castro,José Coutinho,Svitlana Kopyl,Robert C. Pullar +6 more
TL;DR: In this paper, Density functional theory (DFT) was used to calculate the optical band gap energy (E g ) created by various possible oxygen vacancies in the HAp lattice: O from PO 4, O from OH, the loss of an entire HO group, or the simultaneous loss of PO 4 and an entire OH group.
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Sol gel graphene/TiO2 nanoparticles for the photocatalytic-assisted sensing and abatement of NO2
Andrea Giampiccolo,David M. Tobaldi,Salvatore Leonardi,Billy J. Murdoch,Maria Paula Seabra,Martin P. Ansell,Giovanni Neri,Richard J Ball +7 more
TL;DR: In this paper, a conductometric sensor based on TiO2/graphene prepared using material GTiO2S showed a higher response to NO2 compared to sensors based on pure TiO 2 and TiO 1/Graphene 2 hybrid synthesized through a sol-gel route.
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Synthesis of porous biomass fly ash-based geopolymer spheres for efficient removal of methylene blue from wastewaters
Rui M. Novais,João Carvalheiras,David M. Tobaldi,Maria Paula Seabra,Robert C. Pullar,João A. Labrincha +5 more
TL;DR: In this article, fly ash (FA)-based adsorbents were used to extract methylene blue from synthetic wastewaters, and the influence of sorption time, dye initial concentration and adsorbent amount on the dye removal efficiency and uptake by the porous spheres was evaluated.
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Effects of SiO2 addition on TiO2 crystal structure and photocatalytic activity
TL;DR: In this paper, the photocatalytic activity of a series of TiO 2 powders was assessed in gas phase and the results were explained by taking into account the anatase and rutile relative amounts in the samples, their crystallite size, the surface hydroxyl groups adsorbed on the photocats, and the surface area of the mixtures.