A substance that acts as a catalyst in a photochemical reaction.
| 单词 | θ67964 | 
| 释义 | the world > matter > chemistry > chemical reactions or processes > 			[noun]		 > processes or substances affecting reactions > catalysis > photocatalysis > photocatalyst (1)		 photocatalyst1914 A substance that acts as a catalyst in a photochemical reaction. | 
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