Using photocatalysts to split water by solar energy for sustainable H₂ generation has aroused researchers' wide concern. In this study, we chose α-MnO₂ as the electron storage and transfer medium, and introduced the surface plasma resonance effect of Ag into the composite material to successfully prepare novel ternary Ag/α-MnO₂/ZnIn₂S₄ (Ag/α-MnO₂/ZIS) photocatalysts. Various technologies such as photoluminescence (PL), Photocurrent-Time (PC), Linear sweep voltammetry (LSV), Mott–Schottky measurement (M–S) and electrochemical impedance spectra (EIS) were used to characterize the ternary Ag/α-MnO₂/ZnIn₂S₄ photocatalysts. Noteworthy, due to the synergistic effect of the three materials, the composite catalysts have the characteristics of excellent optical properties, more active sites, greater carrier density, and stronger carrier separation and transfer ability. This structural design can remarkably improve photocatalytic performance driven by visible light. As expected, the Ag/α-MnO₂/ZnIn₂S₄ photocatalysts exhibit excellent photocatalytic activity with a maximum H₂-production rate of 3.65 mmol g^-1 h⁻¹, and it is about 14.9 times higher than that of pure ZnIn₂S₄. Furthermore, the ternary Ag/α-MnO₂/ZnIn₂S₄ photocatalysts show recycle ability and good stability, and a photogenerated electron transfer mechanism has been put forward and detailly analyzed. The work offers a novel strategy to design highly active visible light photocatalysts for clean energy.

使用光催化剂通过太阳能将水分解以产生可持续的H ₂引起了研究人员的广泛关注。在这项研究中，我们选择了α-MnO的₂作为电子存储和传输介质，并介绍了Ag的表面等离子体共振效应到复合材料成功地制备新颖三元的Ag /α-MnO的₂ /日宁₂小号₄银（Ag / α-MnO的₂ / ZIS）光催化剂。三元银/α-MnO的表征技术包括光致发光（PL），光电流-时间（PC），线性扫描伏安法（LSV），莫特-肖特基测量（MS）和电化学阻抗谱（EIS）。₂ / ZnIn ₂ S ₄光催化剂。值得注意的是，由于三种材料的协同作用，复合催化剂具有优异的光学性能，更多的活性位点，更大的载流子密度以及更强的载流子分离和转移能力。这种结构设计可以显着提高可见光驱动的光催化性能。如所预期的，对于Ag /α-MnO的₂ /日宁₂小号_4个光催化剂表现出具有最大h优的光催化活性₂ -production的3.65毫摩尔克速率^-1 ħ ^-1，并且它大约是14.9倍高于纯日宁的₂秒_4分。此外，三元的Ag /α-MnO的₂ /日宁₂ S ₄光催化剂具有循环能力和良好的稳定性，并提出并详细分析了光生电子转移机理。这项工作为设计用于清洁能源的高活性可见光光催化剂提供了一种新颖的策略。