研究目的
Investigating the electrocatalytic fixation of N2 to NH3 by C-doped TiO2 nanoparticles under ambient conditions as a more environmentally friendly and sustainable alternative to the conventional Haber–Bosch process.
研究成果
C-doped TiO2 nanoparticles have been proven as an effective non-noble-metal electrocatalyst for the NRR at moderate temperatures and atmospheric pressure, achieving an NH3 yield of 16.22 mg h?1 mgcat.?1 and a faradaic efficiency of 1.84% at ?0.7 V vs. RHE in 0.1 M Na2SO4. This work opens up a new avenue for the design and development of doped Ti-based catalysts with enhanced performances toward electrocatalytic N2 reduction.
研究不足
The study does not address the scalability of the C-doped TiO2 nanoparticles for industrial applications or the long-term stability under continuous operation.
1：Experimental Design and Method Selection:
The study employed a facile calcination assisted solvothermal method for the preparation of C-doped TiO2 nanoparticles. The electrocatalytic NRR performance was tested using a typical two-compartment and three-electrode device.
2：Sample Selection and Data Sources:
C-doped TiO2 nanoparticles were prepared and characterized using XRD, SEM, TEM, HRTEM, SAED, XPS, and UV-vis absorption spectra.
3：List of Experimental Equipment and Materials:
Carbon paper (CP) was used as the substrate for the electrocatalyst. The produced NH3 was detected by spectrophotometry with salicylic acid.
4：Experimental Procedures and Operational Workflow:
The electrocatalytic NRR performance was tested in N2-saturated 0.1 M Na2SO4, with NH3 yield and faradaic efficiency calculated at various potentials.
5：1 M Na2SO4, with NH3 yield and faradaic efficiency calculated at various potentials.
Data Analysis Methods:
5. Data Analysis Methods: The NH3 yield and faradaic efficiency were calculated based on UV-vis absorption spectra and chronoamperometry curves.
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