1：Experimental Design and Method Selection:

The experiment employs a two-step synthesis strategy: dealloying of Cu50Zr45Al5 BMG rod to create NPC/BMG substrate, followed by anodizing and heat treatment to grow Cu2O/CuO nanosheet arrays. The rationale is to leverage the tunable pore structure of NPC and the mechanical stability of BMG for enhanced photocatalytic performance.

2：Sample Selection and Data Sources:

Samples include Cu50Zr45Al5 BMG rod (precursor), NPC/BMG substrate, and Cu2O/CuO@NPC/BMG composite. Commercial Cu foam and Cu plate are used for comparison. Data sources are experimental measurements from characterization techniques.

3：List of Experimental Equipment and Materials:

Equipment: DC Power Supply (TPR-12010D), X-ray diffractometer (D/Max-2500, Rigaku V), XPS (Thermo Fisher Scientific), TEM (Tecnai G2 F20), SEM (Nova nanoSEM 450, FEI), contact angle measurement system (JC2000C1), surface area and porosity analyzer (ASAP2020M+C), fluorescent spectrometer (FSP920), UV spectrophotometer (Lambda-750). Materials: Cu50Zr45Al5 BMG rod, HF (0.05 M), KOH (0.5 M), platinum mesh, RhB solution, H2O2 (30 mass%), Xe lamp (500 W).

4：0). Materials:

4. Experimental Procedures and Operational Workflow: Dealloying: Immerse BMG rod in

5：05 M), KOH (5 M), platinum mesh, RhB solution, H2O2 (30 mass%), Xe lamp (500 W). Experimental Procedures and Operational Workflow:

0.05 M HF at 298 K for 1 day to form NPC/BMG. Anodizing: Use NPC/BMG as working electrode and platinum mesh as counter electrode in

6：05 M HF at 298 K for 1 day to form NPC/BMG. Anodizing:

0.5 M KOH at 5 mA/cm2 for 10-30 min at 298 K. Heat treatment: Calcinate at 473 K for 2 h in air. Characterization: Perform XRD, XPS, SEM, TEM, contact angle, BET, PL, and photocatalytic degradation tests.

7：5 M KOH at 5 mA/cm2 for 10-30 min at 298 K. Heat treatment:

5. Data Analysis Methods: XRD for phase identification, XPS for oxidation states, SEM/TEM for morphology, BET for surface area and pore size distribution, PL for electron-hole recombination, UV spectrophotometry for RhB degradation rate.