Characterization of porous cubic silicon carbide deposited with Pd and Pt nanoparticles as a hydrogen sensor

Quasi-Solid-State Hybrid Electrolytes for Electrochemical Hydrogen Gas Sensor

“…Accordingly, the sensor response was more rapid and the initial sensing current was higher in the liquid electrolyte-based sensor than sensor employing quasi-solid-state hybrid electrolyte. This result demonstrates that a type of electrolyte system plays an important role in determining the gas sensing performance of the electrochemical sensor [29,30]. It should be noted that the current response of the sensor with quasi-solid-state electrolyte was more stable during the repeated cycles, indicating the stable and reproducible redox processes at the electrodes.…”

Reliability of hydrogen sensing based on bimetallic Ni–Pd/graphene composites

“…1(a) describes SEM images of Ni/PdeGr composites that were successfully synthesized in one step from an aqueous solution of GO and PdCl 2 , and a NiCl 2 solution. The postannealing process was performed in Ar at 400 C, which caused the small Pd NPs and NiNPs to coalesce and form larger nanoparticles of bimetallic NiePd on the graphene as a result of thermal energy [40,42]. Due to the excellent thermal conductivity of graphene and its presence in the composites, the Pd and NiNPs easily coalesced to form larger NPs, even at low post-thermal annealing temperatures (400 C) [40,42].…”

Optical properties of mesoporous 4H-SiC prepared by anodic electrochemical etching

“…[13][14][15] The strong absorption in the ultraviolet (UV) has applications for photodetectors, 16,17 while the large surface area is suitable for gas sensors. [18][19][20] Furthermore, as a material that is chemically inert and biocompatible, por-SiC has recently been used to produce SiC based quantum dots (QDs) for biomarkers in living cells. [21][22][23][24][25][26] As in the case of por-Si, one of the most widely used methods to produce mesoporous (2-50 nm pore size) por-SiC structures is anodic electrochemical etching of the bulk using hydrofluoric acid (HF) electrolyte.…”