5 documents found, page 1 of 1
Arsenic entrapment by nanocrystals of Al-magnetite: The role of Al in crystal g...
Mello, Jaime W.V. de; Freitas, Erico T.F.; Stroppa, Daniel G.; Montoro, Luciano A.; Gasparon, Massimo; Ciminelli, Virginia S.T.The nature of As-Al-Fe co-precipitates aged for 120 days are investigated in detail by High Resolution Transmission Electron Microscopy (HRTEM), Scanning TEM (STEM), electron diffraction, Energy Dispersive X-Ray Spectroscopy (EDS), Electron Energy-Loss Spectroscopy (EELS), and Energy Filtered Transmission Electron Microscopy (EFTEM). The Al present in magnetite is shown to favour As incorporation (up to 1.10 wt...
Evolution of reduced Ti containing phase(s) in MgH2/TiO2 system and its effect ...
Pukazhselvan, D.; Nasani, Narendar; Correia, Pedro; Carbó-Argibay, Enrique; Otero-Irurueta, Gonzalo; Stroppa, Daniel G.; Fagg, Duncan Paul
A supramolecular strategy based on molecular dipole moments for high-quality co...
Salonen, Laura M.; Medina, Dana D.; Argibay, Enrique Carbó; Goesten, Maarten G.; Mafra, Luís; Guldris, Noelia; Rotter, Julian M.; Stroppa, Daniel G.A supramolecular strategy based on strongmolecular dipole moments is presented to gain access to covalent organic framework structures with high crystallinity and porosity. Antiparallel alignment of the molecules within the pore walls is proposed to lead to reinforced columnar stacking, thus affording a high-quality material. As a proof of principle, a novel pyrene dione building block was prepared and reacted ...
A supramolecular strategy based on molecular dipole moments for high-quality co...
Salonen, Laura M.; Medina, Dana D.; Carbo-Argibay, Enrique; Goesten, Maarten G.; Mafra, Luis; Guldris, Noelia; Rotter, Julian M.; Stroppa, Daniel G.A supramolecular strategy based on strongmolecular dipole moments is presented to gain access to covalent organic framework structures with high crystallinity and porosity. Antiparallel alignment of the molecules within the pore walls is proposed to lead to reinforced columnar stacking, thus affording a high-quality material. As a proof of principle, a novel pyrene dione building block was prepared and reacted ...
Amorphous oxygen-rich molybdenum oxysulfide Decorated p-type silicon microwire ...
Xiao-Qing Bao; Petrovykh, D. Y.; Alpuim, P.; Stroppa, Daniel G.; Guldris, Noelia; Fonseca, Helder; Costa, Margaret; Gaspar, Joao; Chuanhong JinWe report the fabrication of p-type silicon (Si) photocathodes consisting of well-ordered Si microwire (Si-MW) arrays coupled with non-precious and earth-abundant amorphous oxygen-rich molybdenum oxysulfide (MoOxSy) as both a hydrogen evolution catalyst and a passivation layer. The MoOxSyis conformally grown on the Si-MW surface through photo-assisted cyclic voltammetric (CV) deposition. By adjusting the cycle ...