Understanding the effect of porosity and pore size distribution on low loading catalyst layers

CO-Free H2 Production by Aqueous-Phase Reforming of Methanol Utilizing Heterogenized Ru-MACHO at Low Temperature

“…The results showed that the porosity observed in the catalyst before the reaction was lost in the catalyst after the reaction. A heterogeneous catalyst with porosity offers the advantage of higher contact efficiency between the active site and the reactant compared to a catalyst without porosity. − However, the decrease in the activity of catalyst 1 is expected to be due to the loss of porosity after the APRM process, resulting in a decrease in the number of active sites exposed on the surface. All characteristics of used 1 in the reaction remained the same, except for the decrease in porosity, leading to the conclusion that the loss of porosity of the catalyst was the primary reason for the decreased activity in cycle 2.…”

Multi‐Pleated Alkalized Ti3C2Tx MXene‐Based Sandwich‐Like Structure Composite Nanofibers for High‐Performance Sodium/Lithium Storage

“…[30] The C 1s spectra located at 281.6, 282.6, 284.8, 286.5, and 289.1 eV, which can be attributed to C─Ti, C─Ti-O, C─C, C─O, and C═O bonds, respectively (Figure 1f). [31] O 1s was composed of four peaks, which can be assigned to metal─O, Ti─OH, O─C, and Ti─O bonds (Figure 1g), indicating the co-existence of a-Ti 3 C 2 T x and Co-Fe oxide. [32] In order to clarify the interaction between MXene and CFO@C NFs, XPS measurement of CFO@C NFs was performed (Figure S2a, Supporting Information).…”

Optimized mass transfer in a Pt-based cathode catalyst layer for PEM fuel cells

“…3e). 64 Hydrophilicity is also an important characteristic of the CL and can be evaluated by the contact angle measurement. When a droplet is placed on a surface, the contact angle is formed between the outer edge of the droplet and the solid surface.…”