Ultrasonic-Assisted Synthesis, Characterization, and Photocatalytic Application of SiO₂@TiO₂ Core-Shell Nanocomposite Particles

Table 1

Elemental analysis of SiO₂@TiO₂ samples using EDX and XPS analysis.

Sample	TBOT loading (mol)	Elemental analysis from XRF analysis		Elemental analysis from XPS analysis
		Si	Ti	Si	C	O	Ti
Uncoated SiO2	—	100		25.4	21.0	53.6	0.00
Uncoated TiO2			100	0.00	23.8	51.6	24.6
SiO2-TiO2-1		95.7	4.3	23.5	16.7	55.7	4.1
SiO2-TiO2-2		90.3	9.7	20.2	14.8	56.2	8.8
SiO2-TiO2-3		85.7	14.3	15.6	11.6	55.4	15.4
SiO2-TiO2-4		80.3	19.7	8.7	12.1	59.4	19.8
SiO2-TiO2-5		71.2	28.8	3.2	12.2	59.8	24.8