size dependent24,47. To focus our attention on the effect of hydrogen, all of the tested NWs in this work were selected to have nearly identical diameter of 71 ± 3 nm (see Methods). As shown in Fig.1b, with the increase of hydrogen concentration (cHfrom 0 to 75 wt p.p.m...
Hetero atom doping in RGO and TiO2 imparted positive effect on hydrogen production, however, excess noble metal doping reduces hydrogen production rate [81,82,94]. Hydrogen production yield is about 13.1 times to that of pure TiO2due to available N-active site in RGO layer for feasible ...
H2O is H-bonded, where the first MSA behaves as an H-bond donor at the OH group with the O-atom of S–O in the second MSA as an H-bond acceptor with a bond distance of 1.762 Å. On the other side, the second MSA behaves as an H-bond donor in the methyl group with the O...
Download: Download full-size image Figure 4. DFT Calculation Models and Results (A and B) Side view of DFT calculation models of CdSe/ZnS (A) and CdSe/Zn1−xFexS (B) with adsorbed H atom. (C) Calculated DOS diagram of FeS. (D) The calculated free energy diagram of HER at the ...
The rare gas–hydrogen clusters with one H atom have a simple R k (RH)+ structure with k neutral rare gas atoms attracted to the (RH)+ molecule by polarization forces. Two H atoms can bind with Ar atoms to form quasistable clusters Ar n H+ 2 which dissociate to (n−1)Ar+H+(...
A maximum mass activity of Pt for the HOR is found at particle sizes of 3–3.5 nm. The observed particle size effect is interpreted in terms of the size dependent distribution of surface atoms on the facets and edges, which is implied by the voltammetric responses of Pt/C catalysts with ...
Photoionization dynamics of bounded electrons in the ground state, the first and second excited states of a hydrogen atom, triggered by ultrashort near-infrared laser pulses, have been investigated in a transition regime (γ∼1) that offers both multip
Small organic molecules containing pyridine modules have also been used in the construction of HOFs because the N atom in pyridine has a good electron-donating ability and can form strong hydrogen bonds with the H atom. As with the carboxyl group, two pyrazole functional groups are connected by...
Depiction of a hydrogen atom with size of central proton shown, and the atomic diameter shown as about twice the Bohr model radius (image not to scale) The ground state energy level of the electron in a hydrogen atom is −13.6 eV,[25] which is equivalent to an ultraviolet photon of ro...
On another way, in catalytic processes, the metal has the role of “activating” hydrogen by reversibly dissociating H2into metal-H atom (hydride) species on its surface. It has been observed that, for instance, by heating Pt dispersed on carbon at 623 K, Pt/Al2O3at 473–573 K, Pd/...