铈掺杂固体超强酸光催化剂降解有机物的研究

介绍了固体超强酸光催化剂降解有机污染物机理,包括光催化作用机理和固体超强酸作用机理。光催化作用机理如下:半导体催化剂在光照作用下产生电子空穴,电子空穴有很强的氧化能力,使有机物氧化,达到降解效果;固体超强酸作用机理如下:吸附在B酸和L酸中心上的有机物降解成CO₂,H₂O等无机小分子,以去除水中有机污染物。并根据固体超强酸光催化剂降解有机污染物机理,制备了铈掺杂固体超强酸光催化剂。

Study in Degradation of Organic Matter by Cerium -doped Solid Superacid as Photocatalyst

The mechanisms for degradating organic matter by cerium doped solid superaid as photocata lyst were introduced which included photocatalysis mechanism and solid superacid action mechanism. Photoca talysis were carried out as follows：semiconductor catalyst produced electronic holes under light, and the elec tronic holes had very strong oxidation ability and oxidized organic matter, thus had degradation effect. Solid su peracid degraded the organic matter by the mechanism as follows：the organic matter absorbed on the sites of Bronsted acid and Lewis acid were degraded into CO2, H2O, etc. , thus the organic matter was removed. The ce rium doped solid superacid as photocatalyst was prepared according to the degradation mechanism of solid su peracid.