College of Physics and Electronic Information, Anhui Key Laboratory of Energetic Materials, Huaibei Normal University, Huaibei, 235000, P. R. China.
Dalton Trans. 2019 Jan 15;48(3):1067-1074. doi: 10.1039/c8dt04578j.
Recently, cadmium selenide (CdSe) has been deeply studied because of its excellent photocatalytic hydrogen (H2) production performance. However, pure CdSe has poor stability and severe photocorrosion, which seriously affect its application prospect. In this work, we successfully deposit Bi2MoO6 on an inorganic-organic CdSe-diethylenetriamine (DETA) hybrid to design Bi2MoO6/CdSe-DETA composites by an in situ solvothermal method. The morphology, crystal structure, electrochemical properties, H2 evolution performance and the photostability of Bi2MoO6/CdSe-DETA composites are explored using various techniques. The results show that the as-prepared Bi2MoO6/CdSe-DETA composites exhibit excellent photocatalytic performance and photostability under visible light irradiation. Among them, the Bi2MoO6/CdSe-DETA hybrid system exhibits excellent photocatalytic H2 production performance (5.92 mmol g-1 h-1), which is approximately 3.6 and 1.8 times higher than that of pure CdSe and CdSe-DETA, respectively. After 4 cycles, the photocatalyst still maintains high H2 production. This study develops a new type of photocatalyst that can respond to visible light. This provides an effective way to solve the energy problem by using solar energy.
最近，由于其优异的光催化产氢（H2）性能，硒化镉（CdSe）受到了深入研究。然而，纯 CdSe 的稳定性差，光腐蚀性严重，这严重影响了其应用前景。在这项工作中，我们通过原位溶剂热法成功地将 Bi2MoO6 沉积在无机-有机 CdSe-二乙烯三胺（DETA）杂化体上，设计了 Bi2MoO6/CdSe-DETA 复合材料。采用各种技术研究了 Bi2MoO6/CdSe-DETA 复合材料的形貌、晶体结构、电化学性能、H2 演化性能和光稳定性。结果表明，所制备的 Bi2MoO6/CdSe-DETA 复合材料在可见光照射下表现出优异的光催化性能和光稳定性。其中，Bi2MoO6/CdSe-DETA 杂化体系表现出优异的光催化 H2 产率（5.92 mmol g-1 h-1），分别是纯 CdSe 和 CdSe-DETA 的 3.6 倍和 1.8 倍。经过 4 次循环后，光催化剂仍保持较高的 H2 产率。本研究开发了一种新型的可见光响应光催化剂，为利用太阳能解决能源问题提供了一种有效途径。
