研究目的
Investigating the fabrication of Ag3PO4/fish scale-like graphitic carbon nitride (g-C3N4) sheet composites for enhanced solar-driven photocatalytic oxygen evolution.
研究成果
The fabrication of Ag3PO4/fish scale-like g-C3N4 sheet heterojunction photocatalyst with intimate interfacial contact significantly enhances solar-driven photocatalytic oxygen evolution. The improved performance is attributed to effective surface modification, strong interfacial interactions, and a tandem Z-scheme configuration for efficient charge transfer. This study provides insights into the design of high-performance Z-scheme photocatalytic systems for water splitting.
研究不足
The study focuses on the photocatalytic oxygen evolution performance under specific conditions and may not cover all potential variables affecting the process. The scalability and long-term stability of the fabricated photocatalysts under real-world conditions are not extensively discussed.
1：Experimental Design and Method Selection:
The study combines KOH-assisted surface modification of g-C3N4 and interfacial ion-exchange process to fabricate Ag3PO4/fish scale-like g-C3N4 sheet heterostructures.
2：Sample Selection and Data Sources:
g-C3N4 sheets were prepared by calcination of melamine with KOH, followed by the removal of KOH residues. Ag3PO4 was then deposited on the g-C3N4 sheets via electrostatic assembly.
3：List of Experimental Equipment and Materials:
Field-emission scanning electron microscopy (FE-SEM, FEI Nova Nano450), transmission electron microscopy (TEM, JEOL JEM-2100), X-ray diffraction (XRD, D/MAX2500PC), X-ray photoelectron spectrometer (XPS, Perkin-Elmer PHI 5000C), UV–vis diffuse reflection spectroscopy (DRS, Shimadzu UV2450), photoluminescence (PL) spectra (QuantaMaster? 40), electrochemical workstation (CHI 660E), electron spin resonance (ESR, Bruker A300 Spectrometer).
4：Experimental Procedures and Operational Workflow:
The photocatalytic oxygen evolution was monitored by a portable fiber optic oxygen meter in a sealed reactor under LED illumination.
5：Data Analysis Methods:
The data were analyzed using various spectroscopic and electrochemical techniques to assess the photocatalytic performance and mechanism.
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