Qin Shaowei, Huang Lili, Zhang Yuan, Zhang Tao, Tian Mingxia, Jiang Jianhui
School of Food and Health, Guilin Tourism University, Guilin, 541006, China.
College of Chemistry and Chemical Engineering, Tarim University, Alar, 843300, Xinjiang, China.
Sci Rep. 2025 Jan 4;15(1):787. doi: 10.1038/s41598-025-85268-9.
We have developed a novel S-scheme mechanism to expand the photoresponse range of BiSiO. This study reports the successful creation of a CN/BS heterojunction photocatalyst, which is composed of g-CN and BiSiO. The synthesis was achieved through a simple two-step procedure, involving hydrothermal treatment and subsequent calcination. The 10% CN/BS exhibits superior photocatalytic efficiency. When exposed to visible light, the CN/BS heterojunction photocatalyst achieves a removal rate of 98.8% regarding the breakdown of Rhodamine B (RhB), outperforming BiSiO by a factor of 5 and g-CN by a factor of 3. Furthermore, the removal rate for Ciprofloxacin (CIP) reaches 96.0%, which is double that of BiSiO and 14 times higher than that of g-CN. It is evident that the photodegradation efficiency of 10% CN/BS towards organic pollutants significantly surpasses that of the precursor composite materials. The improved photocatalytic performance is likely due to the larger specific surface area, more efficient light harvesting, and the construction of an heterojunction. Crucially, the proposition of an S-scheme hypothesis for charge transport within the CN/BS heterojunction photocatalyst marks a pivotal advancement. This concept is of substantial importance for both the theoretical exploration and the practical deployment of photocatalytic materials.
我们开发了一种新型S型机制来扩展BiSiO的光响应范围。本研究报告了一种由g-CN和BiSiO组成的CN/BS异质结光催化剂的成功制备。合成通过简单的两步程序实现，包括水热处理和随后的煅烧。10%的CN/BS表现出优异的光催化效率。当暴露于可见光时，CN/BS异质结光催化剂对罗丹明B（RhB）的分解去除率达到98.8%，比BiSiO高出5倍，比g-CN高出3倍。此外，对环丙沙星（CIP）的去除率达到96.0%，是BiSiO的两倍，比g-CN高14倍。显然，10%的CN/BS对有机污染物的光降解效率明显超过前体复合材料。光催化性能的提高可能归因于更大的比表面积、更有效的光捕获以及异质结的构建。至关重要的是，CN/BS异质结光催化剂中电荷传输的S型假设的提出标志着一个关键的进展。这一概念对于光催化材料的理论探索和实际应用都具有重要意义。
