以钛酸丁酯为钛源，通过盐酸调制的两步溶剂热法在FTO基底上制备异质结阵列Bi₂S₃/TiO₂纳米棒。利用XRD、SEM、UV-Vis和电化学工作站等测试手段对Bi₂S₃/TiO₂纳米棒异质结阵列电极的晶体结构、表面形貌、光学和光电化学性质进行了表征。结果表明，经Bi₂S₃敏化后的TiO₂纳米棒阵列薄膜对可见光的吸收明显增强，吸收光波长由400 nm增至700 nm。在标准模拟太阳光（AM 1.5 G，100 mW/cm²）照射下，复合薄膜开路电压为1.06 V，短路电流密度为0.11 mA/cm²，与纯TiO₂纳米棒薄膜相比，光电转化能力显著提高。

Bi₂S₃/TiO₂ nanorod with heterojunction array is successfully prepared on the FTO substrates through a two-step hydrothermal method,using butyl titanium as source.The samples are characterized by X-ray diffraction (XRD),scanning electron microscope (SEM),ultraviolet visible spectrophotometer (UV-Vis) and electrochemical workstation to study the crystal structure,surface morphology,optical and photoelectrochemical properties of the Bi₂S₃/TiO₂ nanorod heterojunction arrays.The results show that the TiO₂ nanorod array film sensitized by Bi₂S₃ is found to have a significantly enhanced absorption ability to the visible light and the wavelength of absorption light increases from 400 nm to 700 nm.Besides,the open circuit voltage of the composite film is 1.06 V and the short-circuit current density is 0.11 mA/cm² under the standard simulated solar irradiation (AM1.5 G,100 mW/cm²).Compared with pure TiO₂ nanorod film,the photoelectric conversion ability of the composite film improves significantly.

李森林(1992-),男,硕士研究生,主要从事TiO₂薄膜的制备及性能研究,li1sen2lin3@foxmail.com。