Hierarchical interfacial engineering of α-Fe2O3 via Al-MOF-anchored Ru for enhanced charge separation
Hierarchical interfacial engineering of α-Fe2O3 via Al-MOF-anchored Ru for enhanced charge separation
研究概述
以Al-MOF作为α-Fe2O3与Ru之间的界面层，兼顾空穴定向传输和Ru活性位点固定，改善三元界面电荷分离及析氧动力学。优化光阳极在1.23 V（相对RHE）达到1.87 mA/cm²光电流，约为原始α-Fe2O3的2.2倍。
谱图与表征信息
Fig. 3. The XPS spectra of Fe 2p (a), O 1s (b) and Al 2p (c) of α-Fe2O3/Al-MOF/Ru photoanode. Fe K-edge XANES spectra (d) of α-Fe2O3/Al-MOF/Ru photoanode, Fe2O3, FeO and Fe foil. K-space EXAFS spectra (e) and Fourier-transformed EXAFS spectra (f) for α-Fe2O3 and α-Fe2O3/Al-MOF/Ru photoanodes; Wavelet transform contour plots (g-i) of Fe K-edge for Fe foil, α-Fe2O3 and α-Fe2O3/Al-MOF/Ru photoanode.