Synthesis of CuO/Co₃O₄ Coaxial Heterostructures for Efficient and Recycling Photodegradation

Figure 8

(a) The photoluminescence (PL) spectra of the CuO NRs, CuO/Co₃O₄ coaxial heterostructures, and CuO/Co₃O₄ nanosheets. Nitrogen adsorption-desorption isotherm for mesoporosity and BJH pore size distribution plot (inset): (b) CuO NRs; (c) CuO/Co₃O₄ coaxial heterostructures; (d) CuO/Co₃O₄ nanosheets.

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