Scalable synthesis of Ca-doped α-Fe2O3 with abundant oxygen vacancies for enhanced degradation of organic pollutants through peroxymonosulfate activation

Highly Enhanced Full Solar Spectrum‐Driven Photocatalytic CO2 Reduction Performance in Cu2–xS/g‐C3N4 Composite: Efficient Charge Transfer and Mechanism Insight

“…The electrochemical impedance spectroscopy (EIS) results were analyzed to further reveal the photoelectrochemical properties of the as‐prepared samples. As shown in Figure 9f, a smaller arc radius was observed for CSCN(0.4) composite than that for pure g‐C 3 N 4 and Cu 2– x S, indicating that the resistance of charge transfer was markedly decreased in the CSCN(0.4) composite photocatalyst, [ 66 ] which can be in accordance with the results of transient photocurrent spectra and the time‐resolved fluorescence spectra. These results indicate that the plasmonic CSCN(0.4) is perfectly integrated in a cheap nonmetal composite, which exhibit not only a full solar‐spectrum‐driven performance for photocatalytic CO 2 reduction, but also an enhanced charge carriers separation.…”

Enhancement of photo-Fenton catalytic activity with the assistance of oxalic acid on the kaolin–FeOOH system for the degradation of organic dyes

“…These results revealed that the lattice fringe spacing of the K-Fe lattice was enhanced. 26,27 To conrm the existence of the FeOOH species and to study the electronic states of the elements in the composite, XPS analysis of the K-Fe samples was carried out. High-resolution XPS spectra of Fe 2p (c) and O 1s (d) are illustrated in Fig.…”

Aerobic Oil-Phase Cyclic Magnetic Adsorption to Synthesize 1D Fe2O3@TiO2 Nanotube Composites for Enhanced Visible-Light Photocatalytic Degradation

“…However, the major drawbacks of iron oxides including low charge carriers’ mobility and rapid photogenerated electron–hole recombination rate restrict its practical applications in photocatalysis [ 12 ]. Consequently, various strategies were developed to enhance its photocatalytic properties, such as controlling diverse morphologies (e.g., nanoparticles, nanocubes and nanodiscs) [ 13 ], doping metal or non-metal ions such as Ca and I [ 14 , 15 ], and coupling with other semiconductors to generate satisfactory photocatalytic heterostructures. Among them, the coupling strategy with other semiconductors has been receiving extensive attentions since these heterostructures can efficiently suppress recombination rates and promote transportation rates of photo-generated charge carriers.…”