Noble Metal Decoration and Presulfation on TiO₂: Increased Photocatalytic Activity and Efficient Esterification of n-Butanol with Citric Acid

Table 1

Physicochemical characteristics of as-prepared samples.

Sample	Crystal size (nm)	Pore volume (mL/g)	Pore size (nm)	SBET (m^2/g)
TiO2	15.40	0.38	9.04	168.69
S/TiO2	15.92	0.38	17.10	190.03
S/Ag-TiO2	15.90	0.40	16.98	193.26
S/Au-TiO2	15.84	0.41	16.60	198.85
S/Rh-TiO2	15.86	0.40	16.64	196.08
S/Pt-TiO2	15.87	0.39	16.92	194.32

Calculated from the XRD results.