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氰化物是一种常见的剧毒物质,例如在电镀工业的废液、选矿废水、其他工业废水中均含CN~-。处理含CN~-废水的方法很多,如有化学氧化法、生化处理等。近年来随着太阳能化学的研究进展,光催化法处理废水的研究也引起了国内外的重视。1977年A.J.Bard等先提出,用TiO_2光催化剂将CN~-氧化成OCN~-,此后H.Yoneyama,H.Tamura用TiO_2粉末或TiO_2单晶电极,将CN~-氧化成OCN~-,并指出了光催化法利用太阳
Cyanide is a common and highly toxic substance, for example, in the electroplating industry, waste water, mineral processing wastewater, and other industrial wastewater contain CN ~ -. There are many ways to deal with CN ~ - wastewater, such as chemical oxidation, biochemical treatment. In recent years, with the progress of solar energy chemistry research, photocatalytic treatment of wastewater also attracted the attention at home and abroad. In 1977, AJBard et al first proposed that CN ~ - be oxidized to OCN ~ - with TiO_2 photocatalyst, and thereafter, H.Yoneyama, H.Tamura oxidized CN ~ - to OCN ~ - with TiO_2 powder or TiO_2 single crystal electrode Pointed out that the photocatalytic method using the sun