In this paper, using loess particles (LoP), a kind of extremely common and inexpensive natural silicate particles with metastable structure, as inorganic carrier, the petaloid Bi₂S₃nanowires have been loaded by in-situ depositing, which afforded loess particles loaded petaloid Bi₂S₃nanowires (PBiNw@LoP) with one-step hydrothermal procedure. Scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray diffraction, and adsorption-desorption isotherms of N₂ have been employed to characterize the prepared composite photocatalyst. The results show that the petaloid Bi₂S₃nanowires are evenly dispersed on the loose surface of loess particles. The photocatalytic activity of PBiNw@LoP is evaluated by photodegradation of methylene blue (MB) irradiated with sunlight. It is demonstrated that PBiNw@LoP exhibits the superior photocatalytic performance with the photocatalytic degradation rate of 99.5%. The petaloid Bi₂S₃ nanowires with larger specific surface helps to absorb light, while the loose surface of loess with certain adsorption capacity. Therefore, the photocatalytic activity has been improved by the synergistic effect in photodegradation of dyes, while the ratio of Bi₂S₃ in catalyst is decreased without affecting the photodegradation performance. In conclusion, a cheap and efficient photocatalyst has been successfully prepared for the degradation of dye wastewater.

中文翻译：

---

黄土颗粒负载的花瓣状Bi2S3纳米线可在阳光下高效降解染料

本文利用黄土颗粒（LoP）（一种具有亚稳结构的极其普通和廉价的天然硅酸盐颗粒）作为无机载体，通过原位沉积法制备了花瓣状的Bi ₂ S ₃纳米线，得到了黄土颗粒。一步式水热法制备花瓣状Bi ₂ S ₃纳米线（PBiNw @ LoP）。扫描电子显微镜，傅立叶变换红外光谱，X射线衍射和N _2的吸附-解吸等温线已用于表征制备的复合光催化剂。结果表明，花瓣状的Bi ₂ S ₃纳米线均匀地分散在黄土颗粒的松散表面上。PBiNw @ LoP的光催化活性通过日光照射的亚甲基蓝（MB）的光降解来评估。证明了PBiNw @ LoP具有优良的光催化性能，其光催化降解率为99.5％。比表面积较大的花瓣状Bi ₂ S ₃纳米线有助于吸收光，而黄土的松散表面具有一定的吸附能力。因此，通过Bi ₂ S ₃的比例对染料的光降解具有协同作用，提高了光催化活性。在不影响光降解性能的情况下减少了催化剂中的H 2O。总之，已经成功地制备了廉价且有效的光催化剂，用于降解染料废水。