发生的事是这样的：在纯净的一个钛和两个氧原子组成的重复单位下，二氧化钛是一种半导体。
What was happening was this: in its pure state of repeating units of one titanium and two oxygen atoms, titanium dioxide is a semiconductor.
本发明公开了一种过氧化氢-二氧化钛光催化消毒污水的方法，采用了二氧化钛光催化和过氧化氢对污水进行处理。
The invention discloses a method for sterilizing sewage by hydrogen peroxide-titanium dioxide photocatalysis and adopts the titanium dioxide photocatalysis and hydrogen peroxide to treat the sewage.
论述了国内纳米二氧化钛微粒制备工艺的进展，重点论述了液相法制备纳米二氧化钛的相关技术进展。
The paper involves the progress of preparation technology of nanometer titania, and focus on the preparation of nanometer titania via liquid phase methods.
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