In this work, a rapid microwave synthesis route is presented for the fabrication of morphology-controlled Cu₂S: ZnIn₂S₄ marigold-like nanoflower heterojunction photocatalysts. The Cu-to-Zn-metal -cation (Cu:Zn) ratios were used to control the Cu₂S: ZnIn₂S₄ heterojunction during the second step of microwave synthesis. The formation of Cu₂S: ZnIn₂S₄ heterojunction is evidenced by XRD, TEM and XPS analyses. The optimum electronic interaction aids to stimulate electron-hole charge separation kinetics and promote the solar hydrogen (H₂) evolution performance in microwave-assisted 5 mol.% Cu₂S:ZnIn₂S₄ (Cu₂S:ZIS–5) heterojunction. Benefiting from the synergy between marigold-like morphology, heterojunction, and Pt loading, the optimum Pt loaded Cu₂S: ZIS–5 marigold nanoflowers (Pt/Cu₂S:ZIS–5) exhibited the 862 µmol of photocatalytic H₂ production after 3 h under visible light irradiation (≥420 nm). The time-resolved PL spectrum showed more than double carrier lifetime in Pt/Cu₂S: ZIS–5 heterojunction (45 ns) than that of Pt/ZIS–15 (20 ns). These visible light-responsive Pt/Cu₂S:ZIS marigold-like nanoflower heterojunction shows promising photostability, which would open new opportunities for the development of highly efficient ternary metal-chalcogenide photocatalysts for solar hydrogen generation.

在这项工作中，提出了一种快速微波合成路线，用于制备形态可控的 Cu ₂ S: ZnIn ₂ S ₄万寿菊状纳米花异质结光催化剂。在微波合成的第二步过程中，Cu 与 Zn 金属阳离子 (Cu:Zn) 的比率用于控制 Cu ₂ S: ZnIn ₂ S _{4异质结。}XRD、TEM和XPS分析证实了Cu ₂ S：ZnIn ₂ S _{4异质结的形成。}最佳的电子相互作用有助于激发电子-空穴电荷分离动力学并促进太阳能氢（H ₂) 在微波辅助的 5 mol.% Cu ₂ S:ZnIn ₂ S ₄ (Cu ₂ S:ZIS-5) 异质结中的演化性能。受益于万寿菊样形态、异质结和 Pt 负载之间的协同作用，最佳 Pt 负载 Cu ₂ S: ZIS-5 万寿菊纳米花 (Pt/Cu ₂ S:ZIS-5) 展示了 862 µmol 的光催化 H ₂生产后在可见光照射（≥420 nm）下 3 h。_{时间分辨 PL 光谱显示 Pt/Cu 2} S: ZIS-5 异质结 (45 ns) 中的载流子寿命是 Pt/ZIS-15 (20 ns) 的两倍以上。这些可见光响应的 Pt/Cu ₂S:ZIS万寿菊状纳米花异质结显示出良好的光稳定性，这将为开发用于太阳能制氢的高效三元金属硫属化物光催化剂开辟新的机遇。