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王小木船

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[求助] 光催化六价铬暗吸附为0

我制备的钨酸锌,为什么还原六价铬30min暗吸附为0,做了两小时暗吸附也一样,光照加了甲醇空穴牺牲剂过后,与原溶液相比,120min过后浓度降低60%,钨酸锌带隙很宽,按理说是不能在可见光激发的,也就是催化剂没有起作用,是甲醇直接和六价铬反应了吗?

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