Order engineering on the lattice of intermetallic PdCu co-catalysts for boosting the photocatalytic conversion of CO₂ into CH₄

Abstract

Order engineering has been performed on PdCu co-catalysts for enhanced photocatalytic performance in conversion of CO2 to CH4 based on the disorder–order transformation from an A1 alloy phase to a B2 intermetallic phase.

Molecular Engineering toward Pyrrolic N‐Rich M‐N4 (M = Cr, Mn, Fe, Co, Cu) Single‐Atom Sites for Enhanced Heterogeneous Fenton‐Like Reaction

“…The absorption edge at ≈460 nm is consistent with the bandgap of g‐C 3 N 4 (2.7 eV). [ 23 ] The photoluminescence (PL), time‐dependent photocurrent ( I – t ) and electrochemical impedance spectroscopy (EIS) were applied to determine the ability for the generation and separation of the charge carriers of the samples. As compared with pure PN‐g‐C 3 N 4 (Figure S12b, Supporting Information), the PL intensity of SA‐Cr/PN‐g‐C 3 N 4 is slightly quenched, indicating that the implanted single‐atom Cr‐N 4 sites can trap the photo‐generated electrons which inhibit the recombination of the charge carriers.…”

Ultra-small intermetallic NiZn nanoparticles: a non-precious metal catalyst for efficient electrocatalysis

“…Nanocrystalline alloys and intermetallics have emerged as a novel class of materials, which are being explored in the development of green sources of energy in fuel cells, [9][10][11][12][13][14] Li-ion batteries, 15,16 photocatalysts, [17][18][19] thermoelectric power generation 20,21 and other diverse applications [22][23][24][25] owing to their robust stability and excellent activity. Since the discovery of intermetallic compounds, they demonstrated excellent prospects by playing a leading role for the fabrication of low-cost high performance potential catalysts.…”

Integration of Plasmonic Metal and Cocatalyst: An Efficient Strategy for Boosting the Visible and Broad‐Spectrum Photocatalytic H2 Evolution

“…The peaks with binding energies of 459.0 and 464.7 eV in the Ti2p spectrum are attributed to Ti2p 3/2 and Ti2p 1/2 of TiO 2 (Figure S7b, Supporting Information), while O1s peaks located at 530.0 and 531.6 eV are assigned to O–Ti of TiO 2 and O–H of surface adsorbed OH groups, respectively (Figure S7c, Supporting Information) . Moreover, in the Pd3d and Au4f spectra, Pd3d 5/2 (335.3 eV), Pd3d 3/2 (340.6 eV), Au4f 7/2 (83.7 eV), and Au4f 5/2 (87.4 eV) peaks indicate the zero valence Pd and Au, while a trace amount of Pd(II) states are also detected and shown as doublets (336.6 and 341.9 eV), which are typical features for solution‐synthesized Pd (Figure S7d,e, Supporting Information) . The binding energies of Pd3d and Au4f peaks are higher and lower than those of pure Pd and Au, respectively, which is caused by the electron transfer from Pd to Au due to the smaller electronegativity of Pd (2.2) than Au (2.4) …”