Enhanced electrocatalytic nitrate reduction through phosphorus-vacancy-mediated kinetics in heterogeneous bimetallic phosphide hollow nanotube array

Enhancing the selective electrochemical conversion of nitrate via π back-donation on Lewis acid sites induced by noble-metal doped CoP

“…1e, there are two significant differences in the P 2p XPS spectra before and after doping: firstly, compared with the P 2p XPS spectrum of CoP, the area of P 2p3/2 and P 2p1/2 characteristic peaks in Pd/CoP significantly increased, which is attributed to the significant enhancement of electronic interactions between elements by Pd doping, thereby improving the conductivity of the material; secondly, the P 2p XPS characteristic peak of Pd/CoP exhibits a slight negative shift as compared to the P 2p XPS spectrum of CoP, which may be due to the decrease in electron density around Pd atoms caused by the introduction of Pd. 26 In addition, for the Pd/CoP, the Pd 3d spectrum shows characteristic diffraction peaks belonging to Pd–P (337.3 eV). satellite peak and oxidized species caused by inevitable air oxidation (Fig.…”

“…In recent research, transition-metal phosphides have gradually shown their brilliance in the eld of electrocatalytic NO 3 − RR due to their easily adjustable electronic structure. 26,27 Through metal doping in transition metal phosphides, the electronic interaction between metal atoms can be effectively regulated, thereby enhancing their catalytic activity. For example, Zhi et al prepared irondoped nickel phosphide (Fe/Ni 2 P), which changes the electronic structure of the metal center through the strong interaction between nickel and iron, thus signicantly improving the electrocatalytic activity of Fe/Ni 2 P. 28 Compared with common metals, noble metals usually have better catalytic activity and selectivity for nitrate reduction.…”

Ag‐Co3O4‐CoOOH‐Nanowires Tandem Catalyst for Efficient Electrocatalytic Conversion of Nitrate to Ammonia at Low Overpotential via Triple Reactions

“…[52] In situ FTIR study revealed that due to the absence of synergistic action among Ag, Co S28a (Supporting Information) and superior to most Zn-NO 3 ‾ batteries have been reported. [80] Figure 6b shows the discharge curves of the i-Ag/Co 3 O 4 NWs-based Zn-NO 3 ‾ battery. The discharging curve for such Zn-NO 3 ‾ cell shows an increased output current density with a more negative cathodic potential.…”

Ruthenium‐Induced Activation of Molybdenum‐Cobalt Phosphide for High‐Efficiency Water Splitting

“…This is evidenced by the presence of numerous discontinuities and dislocations of lattice stripe in Figure S12 (Supporting Information), which may be attributed to phosphorus vacancies. [37,38] To further investigate the vacancy defects in Ru-MoCoP, electron paramagnetic resonance (EPR) testing was conducted. As illustrated in Figure 2d, MoCoP and Ru-MoCoP exhibit varying degrees of signal intensity at g-value of 2.004 indicating the presence of unpaired electrons in the samples.…”