Interstitial oxygen dopants (O_i) in sulfide nanocrystals are more conducive to charge carrier separation for improving the photocatalytic hydrogen evolution (PHE) performance than substituted oxygen dopants (O_S). However, oxygen dopants exist dominantly in the form of O_S, rather than O_i, in oxygen-doped sulfides prepared via traditional methods. Herein, an O_i-doped Cd_xZn_1−xS solid solution was facilely synthesized through pyrolyzing a mixture of oxygen-containing zinc sulfide clusters and CdCl₂ salts. At a controlled pyrolysis temperature, the oxygen components inside the cluster were successfully converted into O_i dopants associated with sulfur vacancies. The as-synthesized O_i-doped Cd_xZn_1−xS solid solution exhibits good PHE performance due to its unique energy band structure caused by the two coexistent defects. The synthetic method of using the intrinsic components in molecular clusters to modulate the types of specific dopants in photocatalysts may provide a new synthetic strategy for creating doped photocatalysts with excellent PHE activities.

中文翻译：

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用于光催化析氢的硫属化物分子簇衍生的间隙 O 掺杂 CdxZn1-xS 固溶体

硫化物纳米晶体中的间隙氧掺杂剂（O _{i ）比取代氧掺杂剂（O S} ）更有利于电荷载流子分离，从而提高光催化析氢（PHE）性能。然而，在通过传统方法制备的氧掺杂硫化物中，氧掺杂剂主要以 O _S而非 O _{i的形式存在。在此，通过热解含氧的硫化锌簇和CdCl 2}的混合物，可以容易地合成O _i掺杂的Cd _x Zn _{1- x} S 固溶体。盐。在受控的热解温度下，簇内的氧成分成功地转化为与硫空位相关的O _{i掺杂剂。}所合成的O _i掺杂的Cd _x Zn _{1- x} S 固溶体由于其由两种共存缺陷引起的独特能带结构而表现出良好的PHE性能。利用分子簇中的本征组分来调节光催化剂中特定掺杂剂类型的合成方法可能为制备具有优异PHE活性的掺杂光催化剂提供新的合成策略。