Enhancement of Photocatalytic Activity of ZnO/SiO₂ by Nanosized Pt for Photocatalytic Degradation of Phenol in Wastewater

Table 1

Texture parameters of ZnO-SiO₂, Img: Pt-ZnO-SiO₂, and PAD: Pt-ZnO-SiO₂.

Sample	𝑆BET	𝑆𝑡	𝑆micro	𝑆ext	𝑉p	𝑉micro	𝑉meso	𝑟
	(m^2/g)	(m^2/g)	(cm^2/g)	(cm^2/g)	(cm^3/g)	(cm^3/g)	(cm^3/g)	(Å)
ZnO-SiO2	480	485	380	100	0.866	0.069	0.803	38.00
Img: Pt-ZnO-SiO2	450	455	500	365	0.726	0.022	0.704	36.00
PAD: Pt-ZnO-SiO2	460	465	650	385	0.668	0.066	0.602	34.00

Note: (𝑆_BET) BET-Surface area, (𝑆_𝑡) surface area derived from 𝑉_𝑙−𝑡 plots, (𝑆_mic) surface area of micropores, (𝑆_ext) external surface area, (𝑉_p) total pore volume, (𝑉_mic) pore volume of micropores, (𝑉_mes) pore volume of mesopores, and (r ⁻) mean pore radius.