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对STO(SrTiO3)(100)晶片存多个温度下进行氧化和氨化.氢化和氮化分别存混合气体(H2:N2=5%:95%)和NH3气中退火进行.实验发现,当氢化温度≥900℃时,STO的紫外光催化有显著增强,但仍不产生可见比催化;当氨化温度≥800℃时,由于N掺杂将导致出现STO可见光催化.进一步研究发现,先氢化再氨化STO光催化能力几乎和单独氨化的STO相同;但是先氨化再氧化STO可见光催化将显并增姐,即存在氧化和氨化的协同效应.“,”Hydrogenation and ammoniation of SrTiOa (STO), a normal ultraviolet photocatalyst, were performed by annealing STO(100) in Hz:N2=5%:95% and NH3, respectively, at various temperatures T. It was found that hydrogenation at T≥900℃ remarkably enhanced the UV photocatalytic ability of STO, but the visible-light photocatalysis was still unavailable, while ammoniation at T≥800℃ introduced the N doping, resulting in visible-light photocat- alytie activity. Furthermore, when a hydrogenated STO was subjected to ammoniation, the visible-light photocatalytie ability was nearly the same as that of the ammoniated one; but the hydrogenation of an ammoniated one significantly enhanced visible-light photoeatalysis, indicating a synergetic effect of hydrogenation and ammoniation. Discussions and identifications have been made to analyze these results.