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为了提升光催化还原反应的效率,通常需要在反应体系中加入空穴牺牲剂来消耗光生空穴,从而避免光生空穴对还原反应的影响。但这种方法增加了处理成本,容易造成水体的二次污染,不适用于饮用水处理。贵金属/过渡金属具有较高的功函数,与光催化材料结合形成异质结,能够捕获光生电子,增强光生电子与空穴的
In order to improve the efficiency of photocatalytic reduction reaction, it is usually necessary to add hole sacrificial agent to the reaction system to consume photogenerated holes so as to avoid the influence of photogenerated holes on the reduction reaction. However, this method increases the processing costs, easily lead to secondary pollution of water is not suitable for drinking water treatment. The noble metal / transition metal has a high work function, combines with the photocatalytic material to form a heterojunction, capable of capturing photogenerated electrons, enhancing photogenerated electrons and holes