The use of co-catalysts can observably enhance photocatalytic hydrogen production activity. In this work, a novel visible-light driven photocatalyst, (MoSe₂-RGO)/(Er³⁺:Y₃Al₅O₁₂/ZnS)/RuO₂ nanocomposite, is prepared for the first time by loading Er³⁺:Y₃Al₅O₁₂, MoSe₂-RGO and RuO₂ on the surface of ZnS nanoparticles. Er³⁺:Y₃Al₅O₁₂ as an effective visible-to-ultraviolet up-conversion luminescence agent can provide the ultraviolet-light to activate wide band-gap ZnS. MoSe₂-RGO and RuO₂, acting as conduction band co-catalyst and valence band co-catalyst, respectively, can effectively separate the photo-generated carriers and supply more reactive sites. The activities of the photocatalysts were assessed via photocatalytic hydrogen production in Na₂S and Na₂SO₃ aqueous solution under 300 W xenon lamp irradiation. In addition, the visible-light irradiation time and used times of the prepared samples as influence factors on the photocatalytic hydrogen production were also investigated. It was easily found that the prepared (MoSe₂-RGO)/(Er³⁺:Y₃Al₅O₁₂/ZnS)/RuO₂ nanocomposite shows fairly high activity in photocatalytic hydrogen production, compared with single ZnS photocatalyst. It was mainly attributed to the excellent up-conversion luminescence property of Er³⁺:Y₃Al₅O₁₂ and the efficient separation of photo-generated electrons and holes caused by MoSe₂-RGO and RuO₂. This research may pave an effective way for photocatalytic hydrogen production utilizing solar light.

助催化剂的使用可以明显提高光催化制氢的活性。在这项工作中，一种新颖的可见光驱动光催化剂，（摩西₂ -RGO）/（二³⁺：Y ₃的Al ₅ ø ₁₂ /硫化锌）/的RuO ₂的纳米复合材料中，在第一次通过加载尔制备³⁺：ZnS纳米颗粒表面的Y ₃ Al ₅ O ₁₂，MoSe ₂ -RGO和RuO ₂。Er ³⁺：Y ₃ Al ₅ O ₁₂作为一种有效的从可见光到紫外线的向上转换发光剂，可以提供紫外线来激活宽带隙ZnS。MoSe ₂ -RGO和RuO _2分别作为导带助催化剂和价带助催化剂，可以有效地分离光生载流子并提供更多的反应位。通过在300 W氙灯照射下在Na ₂ S和Na ₂ SO ₃水溶液中产生光催化氢来评估光催化剂的活性。另外，还研究了制备样品的可见光照射时间和使用时间作为对光催化制氢的影响因素。很容易发现，准备好的（MoSe₂ -RGO）/（Er ³⁺：Y ₃ Al ₅ O ₁₂ / ZnS）/ RuO ₂纳米复合材料与单一的ZnS光催化剂相比，在光催化制氢方面表现出相当高的活性。这主要归因于Er ³⁺：Y ₃ Al ₅ O ₁₂优异的上转换发光性能，以及MoSe ₂ -RGO和RuO ₂引起的光生电子和空穴的有效分离。该研究可能为利用太阳光生产光催化制氢铺平有效途径。