Novel tungsten carbide nanorods: An intrinsic peroxidase mimetic with high activity and stability in aqueous and organic solvents

Ion Beams for Space Applications

“…On average, there are only about 2 rods in every 100 μm 2 . One can suggest that the W content of the coating coupled with the high temperatures inherent to the PLD process might have favoured the formation of these rods [16][17][18][19][20]. However, their formation mechanism is not fully understood yet, mainly because of the way in which they melt under proton irradiation.…”

“…Thermal excitation has been reported to favour the growth of nanorods in the presence of Zinc [26] and Tungsten [16] as catalysts. Furthermore, WC nanorods were reported to be synthesised in processes where WO 3 nanorods and thermal treatment played a key role [17][18][19][20].…”

Magnetosomes extracted from Magnetospirillum magneticum strain AMB-1 showed enhanced peroxidase-like activity under visible-light irradiation

“…Many nanomaterials possess peroxidase activity, and some of them [11,31] are characteristic of ping-pong mechanisms, as has been observed for HRP [32]. Meanwhile, some nanomaterials have a different characteristic [33].…”

Nanostructured molybdenum disulfide based catalysts for electrochemical hydrogen evolution reaction

“…46,47 Thus, they have shown sufficient HER activity to be considered as stand-alone HER electrocatalysts. 7,48,49 Moreover, the good stability in acidic environments is also an important reason for choosing WC or W 2 C electrodes as candidates for HER application. [50][51][52] Studies have showed that their catalytic properties strongly depend on its surface composition and conditions, such as the surface carbon coverage, the particle size, lattice defects and pseudometallic surfaces and so on.…”

“…Therefore, it remains challenging to develop highly effective HER electrocatalysts with high abundance and low cost and to replace the noble metal Pt-based catalysts. Recent advances in material science and nanotechnologies have revealed that transition metal carbides 6,7 and chalcogenides, 8,9 especially nanostructured molybdenum sulfides (MoSx, x ≈ 2 to 3), 10,11 would be the promising and inexpensive alternatives to Pt for the electrochemical generation of hydrogen from water. 12 As the half-reaction for water splitting, HER process would be explained by three possible reaction steps on various electrocatalysts in acidic media.…”