Mo‐Doped ZnIn2S4 Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution,Solar RRL

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Mo‐Doped ZnIn2S4 Flower‐Like Hollow Microspheres for Improved Visible Light‐Driven Hydrogen Evolution
Solar RRL ( IF 6.0 ) Pub Date : 2019-12-05 , DOI: 10.1002/solr.201900483
Fangshu Xing ₁ , Qiuwen Liu ₁ , Caijin Huang ₁

Affiliation

Designing robust visible light‐driven photocatalysts in terms of the structure and component is an important way for achieving efficient solar hydrogen production. Herein, Mo‐doped ZnIn₂S₄ (M‐ZIS) flower‐like hollow microspheres assembled by ultrathin nanosheets are reported. The as‐prepared M‐ZIS samples achieve an enhanced H₂ generation rate of 4.62 mmol g⁻¹ h⁻¹ under visible light, ten times higher than that of pristine ZIS. The 3D hollow microspheres structure assembled by nanosheets ensures sufficient light harvesting and exposure of more active sites. Meanwhile, the doping of Mo is propitious to regulate the chemical characteristic and electronic structure of ZIS in the merit of ameliorated hydrophilicity, extended light adsorption, accelerated transfer‐separation efficiency of charge carriers, as well as the reduced overpotential of H₂ evolution. This model is put forward to obtain an in‐depth understanding of the role that both the 3D hollow hierarchical structure and doping atoms play in photocatalytic water splitting.

中文翻译：

钼掺杂的ZnIn2S4花状空心微球可改善可见光驱动氢的生成

根据结构和组件设计坚固的可见光驱动光催化剂是实现高效生产太阳能氢的重要途径。本文报道了超薄纳米片组装的Mo掺杂的ZnIn ₂ S ₄（M-ZIS）花状空心微球。制备的M-ZIS样品的H ₂生成速率提高为4.62 mmol g ^-1 h ^-1在可见光下，是原始ZIS的十倍。由纳米片组装的3D中空微球结构可确保足够的光收集和更多活性位点的曝光。同时，Mo的掺杂有利于调节ZIS的化学特性和电子结构，具有改善的亲水性，扩展的光吸收，加速的载流子转移-分离效率以及降低的H ₂释放超电势的优点。提出该模型是为了深入了解3D空心分级结构和掺杂原子在光催化水分解中的作用。

更新日期：2019-12-05

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