Figure 10From: Surfactant-free synthesis of Cu2O hollow spheres and their wavelength-dependent visible photocatalytic activities using LED lamps as cold light sourcesN 2 adsorption-desorption isotherm curves. N2 adsorption-desorption isotherm curves of the different samples prepared at 0°C, 25°C, and 50°C. The inset shows the pore size distributions of the different samples.Back to article page