Cuprous Oxide (Cu₂O) Coating Preparation Solution- Trojan (Suzhou) material technology Co., Ltd.

Cuprous Oxide (Cu₂O) Coating Preparation Solution

08-04-2026

As a star coating in the field of catalysis, cuprous oxide (Cu₂O) coating is a typical p-type semiconductor with a band gap of approximately 2.2 eV. It can absorb visible light to initiate catalytic reactions, and is widely used in organic pollutant degradation, water splitting for hydrogen production, and other applications. Its catalytic activity directly depends on the microstructure and quality of the coating. Coatings prepared by electrochemical deposition, chemical reduction, and other methods can adhere tightly to the substrate and provide sufficient active sites for catalytic reactions.

Metallographic analysis serves as a key method to control the quality of catalytic-grade cuprous oxide coatings. Through metallographic observation, we can accurately measure coating thickness, grain size, and phase composition, and detect defects such as pores, cracks, and cupric oxide inclusions. These defects reduce active sites and coating adhesion, directly leading to lower catalytic efficiency and coating delamination failure. Reliable metallographic testing verifies the rationality of preparation processes, optimizes coating microstructure, and ensures stable catalytic performance from the source. It is an essential quality control step in the mass production and application of catalytic-grade Cu₂O coatings.

Metallographic Sample Preparation Procedure for Cu₂O Coatings

1️⃣ Grind with P400 metallographic sandpaper disc to remove cutting deformation and flatten the surface.

2️⃣ Perform fine grinding with P800 and P2000 metallographic sandpapers.

3️⃣ Rough polishing: SC-JP polishing cloth + 9 μm PD-WT polishing suspension.

4️⃣ Intermediate polishing: SC-JP polishing cloth + 3 μm PD-WT polishing suspension.

5️⃣ Final polishing: ZN-ZP polishing cloth + AO-A439 polishing suspension.

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