A Facile One-Pot Synthesis of Biomimetic Photocatalyst Zn(II)-Porphyrin-Sensitized 3D TiO2 Hollow Nanoboxes and Synergistically Enhanced Visible-Light Degradation

Table 1 Structural analysis of various samples

Samples	XRD₍₁₀₁₎ relative intensity (%)	XRD₍₁₀₁₎ peak position (°)	Crystal size^a (nm)	d-spacing (Å)
TiO₂-HNBs	78	25.41	271	3.5
T-1p	89	25.38	269	3.5
T-2p	100	25.36	262	3.5
T-3p	87	25.37	260	3.5
T-5p	83	25.35	256	3.5

^aThe crystal sizes were obtained based on the {101} diffraction peak by Scherrer equation: \( \mathrm{alcohol}\ \overset{\mathrm{dehydration}}{\to }\ \mathrm{alkene}\ \left(\mathrm{ester}\right)+{\mathrm{H}}_2\mathrm{O} \), where K = 0.89 stands for the shape factor, β is the full-width half-maximum of the diffraction peak, λ represents the wavelength of X-ray irradiation (Cu Kα = 0.15418 nm), and θ is the X-ray diffraction angle