Abstract CdxZn1-xS/ZnO nanohybrids were fabricated by using mixed Na2S and Na2S2O3 as the sulfur source via a facile one-pot synthesis. CdxZn1-xS/ZnO with x = 0.54, 0.58, 0.62, 0.68 and 0.75 was successfully tuned by altering the molar ratio of Na2S and Na2S2O3. Sole sulfur source Na2S or Na2S2O3 could only generate Cd0.5Zn0.5S or CdS/ZnO, respectively. The in-situ co-growth of CdxZn1-xS and ZnO makes them combine penetratingly in CdxZn1-xS/ZnO nanohybrids, giving them a highly intimate contact. The natural matched band-edge positions and highly intimate contacts between CdxZn1-xS and ZnO are conductive to charge separation and transfer. Benefiting from the structural and compositional merits, the optimized CdxZn1-xS/ZnO nanohybrid with sizes of about 5−8 nm exhibited outstanding performance for Cr(VI) reduction under visible-light illumination. The newly designed one-pot synthetic strategy in this work may provide a brand-new pathway in developing high-efficiency multi-component photocatalysts for practical use.

中文翻译：

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使用混合硫源进行光催化的 CdxZn1-xS/ZnO 纳米杂化物的一锅法制备

摘要 以混合的 Na2S 和 Na2S2O3 作为硫源，通过简便的一锅法合成制备了 CdxZn1-xS/ZnO 纳米杂化物。通过改变 Na2S 和 Na2S2O3 的摩尔比，成功调整了 x = 0.54、0.58、0.62、0.68 和 0.75 的 CdxZn1-xS/ZnO。单独的硫源 Na2S 或 Na2S2O3 只能分别生成 Cd0.5Zn0.5S 或 CdS/ZnO。CdxZn1-xS 和 ZnO 的原位共生长使它们在 CdxZn1-xS/ZnO 纳米杂化物中渗透结合，使它们具有高度的亲密接触。CdxZn1-xS 和 ZnO 之间自然匹配的带边位置和高度密切的接触有利于电荷分离和转移。受益于结构和组成的优点，尺寸约为 5-8 nm 的优化 CdxZn1-xS/ZnO 纳米杂化物在可见光照射下表现出出色的 Cr(VI) 还原性能。