Photoelectrochemical properties of Fe2O3 nanorods grown with an Na2SO4 additive

Multi-ion Modulated Single-Step Synthesis of a Nanocarbon Embedded with a Defect-Rich Nanoparticle Catalyst for a High Loading Sulfur Cathode

“…47 To clarify the role of oxygen defects on electrical properties, electrochemical impedance spectroscopy (EIS) measurements were performed. 48 As shown in Figure 1i ), the smaller slope for the ODFO@3DGC system indicates that it possesses a higher donor density than the FO@3DGC sample, 42 which could attribute to the larger number of oxygen defects in ODFO@ 3DGC.…”

“…Compared to FO@3DGC, the peak intensity at 1.44 Å is lower in ODFO@3DGC (Figure g), indicating that the Fe coordination number is lower owing to higher concentration of oxygen defects. ,− Although the presence of more Fe 2+ sites and oxygen defects is not directly observable in EPR, it will affect the resonance values through electronic coupling with Fe 3+ , resulting in different EPR spectrum features and a distinctly different g value for the ODFO@3DGC sample (Figure h) . To clarify the role of oxygen defects on electrical properties, electrochemical impedance spectroscopy (EIS) measurements were performed . As shown in Figure i, both samples display a positive slope in the Mott–Schottky plots, revealing their n -type semiconductor nature.…”

Fe2O3/FePO4/FeOOH Ternary Stepped Energy Band Heterojunction Photoanode with Cascade‐Driven Charge Transfer and Enhanced Photoelectrochemical Performance

“…[7][8][9][10] To date, semiconductor photoelectrodes have shown great potential for efficient solar energy conversion. [11][12][13][14] In a variety of semiconductor materials, hematite (Fe 2 O 3 ) is a promising photoanode material because of its narrow bandgap (~2.0 eV), [15][16][17][18] outstanding chemical stability in alkaline electrolyte, nontoxicity for human, and abundance in the earth. [19] The theoretical research shows that the highest solar-to-hydrogen efficiency of Fe 2 O 3 can reach up to 16.8 %.…”