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半导体光催化剂可以将太阳能直接转化为化学能,在有机转化领域具有很好的潜力,然而它们的应用受到光利用效率低和光生载流子易复合的限制。制备能带结构匹配的半导体异质结,例如p-n异质结和Ⅱ型异质结,可以在异质结界面形成内建电场或电荷...
29.C、Si、Ge、Sn、Pb都是第五主族元素。试用钻穿效应答释C、Si呈四价,Ge、Sn有二价和四价,但以四价较稳定,P有二价也有四价,但以二价较稳定的原因