2019年9月10日 · Electrochemical tip-enhanced Raman spectroscopy (EC-TERS) has been implemented to investigate the structure and activity of iron(II) phthalocyanine (FePc)—a model catalyst for the oxygen reduction reaction (ORR). Using EC-TERS, both reversible change and irreversible degradation to FePc have been observed during ORR.

2022年12月15日 · XAS and in situ Raman spectra confirm the FePc-Co-N 3 is the main ORR active site. Coupling the FePc with Co-N 3 can induce the electron delocalization, resulting in a strong electronic interaction to promote O 2 adsorption and activation.

2022年6月16日 · By in situ (isotope-labeled) Raman spectroscopy of molecular Fe phthalocyanine (FePc) model catalysts and pyrolyzed Fe–N–C catalysts, we achieve direct, simultaneous spectral identification of the ORR intermediates/RDSs at different active sites under different pH conditions, from which their intrinsic activities and ORR mechanisms can be ...

2015年3月1日 · The structural properties of the FePc thin films were determined by an X-Ray Diffraction (XRD) analysis and Raman Spectroscopy. Surface morphology of FePc films was determined by Scanning Electron Microscopy (SEM).

2020年8月20日 · Iron phthalocyanine (FePc) is a promising non-precious catalyst for the oxygen reduction reaction (ORR). Unfortunately, FePc with plane-symmetric FeN 4 site usually...

Using iron phthalocyanine (FePc) as a model catalyst, we elucidate how the local strain can enhance the ORR performance of Fe–N–Cs. We use density functional theory to predict the reaction mechanism for the four-electron reduction of oxygen to water.

We measured the Raman spectra of FePc α and β powders and compared them with the spectrum of FePc thin film on Au as shown in Figure 5, in order to demonstrate the type of phase adopted by...

2019年4月1日 · The structure of FePc in the catalsyt was examined using Raman spectroscopy. As shown in Fig. 2, the as-received FePc (powder) exhibits 3 major Raman peaks together with 7 weak peaks. These peaks are also observed for FePc-VC and FePc-Flotube, indicating that a large amount of undissolved FePc particles (aggregates) remained in these two catalysts.

2018年2月12日 · Raman spectroscopic analysis of FePc and CoPc thin films of about 50 nm thickness deposited on polycrystalline gold, SiOx/Si, and indium tin oxide (ITO) substrates reveals lower intensity for macrocy...

2011年9月21日 · The micro-Raman scattering spectra of FePc thin layers were investigated in the spectral range 550–1,800 cm−1 using 488-nm excitation wavelength. The Raman scattering and atomic force microscopy studies were performed at …