Surface Modification of SnO₂ with Phosphonic Acids

Table 1

TGA data for S1–S4 compounds.

Sample	Weight loss, %		Weight loss, %		Total weight loss till 800°C in air, %
	25–130°C		130–550°C
	Air	Nitrogen	Air	Nitrogen
S1	0.33	0.30	4.10	3.03	4.31
S2	0.47	0.26	3.01	2.41	3.40
S3	0.45	0.30	2.63	2.24	3.09
S4	0.54	0.42	2.45	1.98	2.89