SiC is a newly developed photocatalyst, but it is often used together with a co-catalyst rather than solely for its relatively low activity. Here we reported the high activity of a commercial SiC in a photocatalysis and ozone combined process (photocatalytic ozonation). The commercial SiC showed very weak activity in photocatalysis of oxalic acid (OA) and para-hydroxybenzoic acid (PHBA) degradation, and its performance in catalytic ozonation was also not satisfied. However, the organics degradation and mineralization rates dramatically increased in the SiC photocatalytic ozonation. The different operation parameters were optimized, and the main reactive radicals in this process and its generation pathways were studied. It was found that photo-generated electron reduction of ozone and oxygen are the main pathways to produce hydroxyl radical, which was responsible to the high oxidizing ability of this process.

SiC是一种新兴的光催化剂，但通常与助催化剂一起使用，而不仅仅是因为它的活性较低。在这里，我们报道了商业SiC在光催化和臭氧结合过程（光催化臭氧化）中的高活性。市售的SiC在草酸（OA）和对羟基苯甲酸（PHBA）的光催化中显示出非常弱的活性，并且在催化臭氧化中的性能也不令人满意。然而，在SiC光催化臭氧化中，有机物的降解和矿化速率急剧增加。优化了不同的操作参数，研究了该过程中的主要反应自由基及其生成途径。发现光生电子还原臭氧和氧气是产生羟基自由基的主要途径，