The photocatalysis of the semiconductive materials convert the photon energy to chemical energy.

半导体材料催效应能转为学能。

A series of toxic products were produced after photocatalysis on ethanol, such as acetaldehyde, ethyl formate, ethyl acetate, diethoxymethane, 1,1-diethoxyethane.

如乙应产物包括乙醛，乙酸乙酯，乙酸甲酯，缩醛等一系列有害物质。