Radiation synthesis of size-controllable ruthenium-based electrocatalysts for hydrogen evolution reaction

Revealing and magnifying interfacial effects between ruthenium and carbon supports for efficient hydrogen evolution

“…5b and S4†). As compared to commercial HER catalysts, Ru/ZC-E50 shows superior HER activity to Pt/C with a loading of 20 wt% (54 mV), Ru/C with a loading of 5.0 wt% (56 mV), and other supported Ru catalysts, as summarized in Table S6 † 28,29,40–47 . In addition, the etched catalysts also show improved HER kinetics.…”

“…As compared to commercial HER catalysts, Ru/ZC-E50 shows superior HER activity to Pt/C with a loading of 20 wt% (54 mV), Ru/C with a loading of 5.0 wt% (56 mV), and other supported Ru catalysts, as summarized in Table S6. † 28,29,[40][41][42][43][44][45][46][47] In addition, the etched catalysts also show improved HER kinetics. The Tafel slopes were reduced to 82 mV dec À1 and 92 mV dec À1 for Ru/ZC-E50 and Ru/ZC-E100, respectively (Fig.…”

Ambient γ‐Rays‐Mediated Noble‐Metal Deposition on Defect‐Rich Manganese Oxide for Glycerol‐Assisted H2 Evolution at Industrial‐Level Current Density

“…The difference is attributed to the extended penetration depth of typical γ-rays, which allows diffusive radical generation over a large volume of water and, thus, the uniform distribution of Ru NPs deposited on nanowire support. [13][14]18] TEM images of Ru@MnO 2-x and Ru@MnO 2 show a uniform nanowire morphology with diameters between 30-50 nm and lengths on the micrometer scale (Figure 1b; Figure S8). The bright field HRTEM images showed the dspacing values of the Ru nanoparticle and MnO 2 crystalline planes.…”

“…[13] γ-rays ionize and excite the water to produce abundant reactive species such as solvated electrons and H * radicals. [14] The transient reducing species can quickly reduce metal ions to the zero valent states and give rise to metal NPs in metal oxides. [15] The formation of metal NPs can be manipulated via the irradiation parameters, such as absorbed dose or absorbed dose rate.…”

Highly dispersed ruthenium nanoparticles on nitrogen doped carbon toward efficient hydrogen evolution in both alkaline and acidic electrolytes

“…20,28 Meanwhile, Ru frequently exhibits attractive electrocatalytic performance similar to Pt. 3,[29][30][31][32][33][34] These aspects indicate that Ru-based HER electrocatalysts might become an inexpensive alternative to Pt-based ones.…”