Modified Wo3nanorod Withpt Nanoparticle As Retrievable Materials in Catalytic And

Modified WO3nanorod withpt nanoparticle as retrievable materials in catalytic and photocatalytic aerobic oxidation of alcohols

FarnazHosseini, Elham Safaei, SajjadMohebbi*

Department of Chemistry, University of Kurdistan, P.O. Box 66175-416, Sanandaj, Iran

Corresponding author email address: , Tel: +98(87) 33624133

S1. TEM image of Pt/WO3 (0.3 wt% of Pt)

S2. Initial test for oxidation of alcohols by WO3.[a]

Entry / Amount of catalyst
(g) / H2O2 (µl) / Selectivity
% / Isolated yield %
1 / 0.01 / 20 / >99 / 20
2 / 0.15 / 20 / >99 / 20
3 / 0.02 / 20 / >99 / 25
4 / 0.005 / 30 / >99 / 30
5 / 0.008 / 30 / >99 / 35
6 / 0.01 / 30 / >99 / 42
7 / 0.15 / 30 / >99 / 49
8 / 0.02 / 30 / >99 / 50
9 / 0.03 / 30 / >99 / 51
10 / 0.035 / 30 / >99 / 51
11 / 0 / 30 / >99 / 10
[a]Reaction condition: benzyl alcohol (0.1 mmol), acetonitrile (1.5 ml), reaction time: 5 h, reaction temperature 50 °C.

S3. Effect of temperature on the oxidation reaction of benzyl alcohol by WO3.[a]

Entry / Substrate / Time (h) / Temperature / Selectivity
% / Isolated yield %
1 / Benzyl alcohol / 5 / 30 / >99 / 25
2 / Benzyl alcohol / 5 / 50 / >99 / 50
3 / Benzyl alcohol / 5 / 80 / 90 / 60
4 / Benzyl alcohol / 5 / 100 / 70 / 65
[a]Reaction condition: Benzyl alcohol (0.1 mmol), Amount of catalyst (0.02g), Amount of solvent (1.5ml), reaction time: 5 h.

S4. Catalytic activity of Pt/WO3 nanocomposite in optimized conditions.[a]

Entry / Substrate / Time (min) / Product / Selectivity
% / Isolated yield %
1 / / 90 / / >99 / 72
2 / / 70 / / >99 / 69
3 / / 70 / / >99 / 65
4 / / 60 / / >99 / 68
5 / / 45 / / >99 / 69
6 / / 180 / / >99 / 65
[a] Reaction condition: Substrate (0.1 mmol), Amount of catalyst (0.02g), reaction temperature 50 °C, Amount of solvent (1.5ml).

S5. Photocatalytic activity of WO3 nanorode in the optimized conditions.[a]

Entry / Substrate / Time (h) / Product / Selectivity
% / Isolated yield %
1 / / 5 / / >99 / 69
2 / / 5 / / >99 / 69
3 / / 5 / / >99 / 67
4 / / 4 / / >99 / 68
5 / / 4 / / >98 / 70
6 / / 5 / / >98 / 65
[a] Reaction condition: Substrate (0.1 mmol), Amount of catalyst (0.01g), reaction temperature 25 °C, Amount of solvent (1.5ml), Visible Irradiation

S6. GC analysis of photoxidation reaction of4-chlorobenzyl alcohol in present of WO3 nanorods (a) and Pt/WO3nanocomposite(b)