Table 3. Effect of Photocatalyst, Light, and Oxygen Gas on the Condensation Reaction.

entry	green LED (25 W, λ 535 nm)	catalyst	air	time (min)	yield (%)
1	+		+	30	12
2	+	ZnO-ZnS	+	30	87
3	+	ZnO	+	30	58
4	+	ZnS	+	30	38
5	–	ZnO-ZnS	+	30	46
6	+	ZnO-ZnS	N2	30	32

Reaction condition is described below Table 1. 0.01 g of photocatalyst was used in 5 mL of acetonitrile.