A three-dimensional (3D) flower-like MoS₂/Bi₂S₃ heterojunction is successfully synthesized through a simple one-step hydrothermal route. The special 3D morphology, achieved by assembling 2D MoS₂ nanosheets onto 3D Bi₂S₃ micro-flowers, helps to promote the photogenerated electron–hole separation and the electronic conduction. Thus, the as-prepared MoS₂/Bi₂S₃ heterojunction exhibits a prominent photocatalysis activity and electrochemical performance. Compared with pure Bi₂S₃ (11.8%) and MoS₂ (49.2%), the heterojunction demonstrates the higher percentage of methylene blue degradation (76.2%). The enhanced photocatalytic activity is attributed to the effective separation of the charge carriers between Bi₂S₃ and MoS₂, which is not possible with individual materials. When the MoS₂/Bi₂S₃ heterojunction is tested as a supercapacitor electrode, it shows an optimum capacitance of 100.2 F/g at a current density of 1 A/g, which is about 22-times higher than that of pure Bi₂S₃ (4.5 F/g). With the key findings, the potential of metal sulfides heterojunction for multifunctional applications is highly expected.

通过简单的一步式水热法成功地合成了三维（3D）花状MoS ₂ / Bi ₂ S ₃异质结。通过将2D MoS ₂纳米片组装到3D Bi ₂ S ₃微型花上而获得的特殊3D形态，有助于促进光生电子-空穴的分离和电子传导。因此，所制备的MoS ₂ / Bi ₂ S ₃异质结表现出突出的光催化活性和电化学性能。与纯Bi ₂ S ₃（11.8％）和MoS _2相比（49.2％），异质结显示出较高的亚甲基蓝降解率（76.2％）。增强的光催化活性归因于Bi ₂ S ₃和MoS ₂之间电荷载流子的有效分离，这对于单独的材料是不可能的。当测试MoS ₂ / Bi ₂ S ₃异质结作为超级电容器电极时，它在1 A / g的电流密度下显示出100.2 F / g的最佳电容，这比纯Bi _2的电容高约22倍。S ₃（4.5 F / g）。有了关键的发现，人们高度期待金属硫化物异质结在多功能应用中的潜力。