In our preceding paper (Y. Fukui , , 2023, , 25594-25602), we reported a systematic study of the Ag-ion conducting behaviour of silver iodide (AgI)-loaded mesoporous aluminas (MPAs) with different pore diameters and AgI-loading ratios. By optimising the control parameters, the Ag-ion conductivity has reached 7.
View Article and Find Full Text PDFA systematic study of Ag-ion conducting behavior in Ag-loaded porous materials was conducted over the entire sub-10 nm region for the first time. The effects of the pore diameter of mesoporous aluminas (MPAs) and the amount of silver iodide (AgI) loaded into MPAs were investigated using N gas adsorption/desorption, powder X-ray diffraction, differential scanning calorimetry, and electrochemical impedance spectroscopy measurements. Confinement of AgI in the mesoporous space lowers the phase transition temperature between the β/γ- and α-phases relative to that of bulk AgI.
View Article and Find Full Text PDFTo enhance the decomposition properties of ethylene, Pt-loaded mesoporous silica (SiO) was coated onto the scaffolds of cordierite (MgAlSiO) membranes (CM) and glass fibers (GF). The surface areas of the mesostructured SiO layers coated on CM (CM/meso-SiO) and GF (GF/meso-SiO) were, respectively, 118 and 323 times higher than those of the CM and GF. In addition, Pt nanoparticles were homogeneously loaded in the mesopores, which acted as a catalyst.
View Article and Find Full Text PDFIn this work, we fabricate a highly effective catalyst for carbon monoxide oxidation based on gold-loaded mesoporous maghemite nanoflakes which exhibit nearly 100% CO conversion and a very high specific activity of 8.41 molCO gAu-1 h-1 at room temperature. Such excellent catalytic activity is promoted by the synergistic cooperation of their high surface area, large pore volume, and mesoporous structure.
View Article and Find Full Text PDFHerein, we report the synthesis of gold (Au)-loaded mesoporous iron oxide (FeO) as a catalyst for both CO and NH oxidation. The mesoporous FeO is firstly prepared using polymeric micelles made of an asymmetric triblock copolymer poly(styrene-b-acrylic acid-b-ethylene glycol) (PS-b-PAA-b-PEG). Owing to its unique porous structure and large surface area (87.
View Article and Find Full Text PDFIn the present work, 2.4 nm gold nanoparticles (Au NPs) are uniformly dispersed on mesoporous titania thin films which are structurally tuned by controlling the calcination temperature. The gold content of the catalyst is as high as 27.
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