

The SnO2 nanospheres were synthesized by hydrothermal reaction of K2SnO3 in an aqueous glucose solution followed by calcination at 400 degC in air [18]. The SnO2 supported Pd catalyst was prepared through reduction of Na2PdCl4 with NaBH4. In a typical procedure, 50 mg of SnO2 was dispersed in 50 mL of water by sonication. Then, 2 mL of Na2PdCl4 solution (0.06 mM) was added, and the mixture was stirred for 1 h. A freshly prepared 10 mL of NaBH4 solution (0.1 M) was added to the solution at 0 degC, followed by stirring at room temperature overnight. Finally, it was filtered, washed with water and ethanol, and vacuum-dried at 70 degC for 6 h.
hydrothermal reaction of K2SnO3
calcination
400 degC
degC
SnO2
dispersed
50 mg
mg
water
50 mL
mL
Na2PdCl4 solution
added
2 mL
mL
mixture
stirred
1 h
h
Na2PdCl4 solution
added
0.06 mM
mM
NaBH4 solution
added
10 mL
mL
NaBH4 solution
added to the solution
0.1 M
M
NaBH4 solution
added to the solution
0 degC
degC
it
vacuum-dried
70 degC
degC
it
vacuum-dried
6 h
h