Wei Zimu, Wang Ying, Shao Zonghan, Xie Linkun, Zhang Lianpeng, Xu Kaimeng, Chai Xijuan
Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, China.
College of Material and Chemical Engineering, Southwest Forestry University, Kunming 650224, China.
Molecules. 2025 Apr 12;30(8):1735. doi: 10.3390/molecules30081735.
A boron-doped BiOBr photocatalytic nanosheet was synthesized using a one-step hydrothermal method. The effects of solvent, temperature, and boron doping content on the morphology and photocatalytic performance were investigated. The boron-doped samples synthesized with acetic acid at 180 °C (1B-AB) showed optimal photocatalytic performance, achieving 80% efficiency in degrading sulfanilamide (SN) within 6 h. After five cycles, the degradation rate decreased by 21%. The 10% boron doping reduced BiOBr's bandgap (from 2.90 to 2.88 eV), improving visible light utilization and reducing electron-hole pair recombination. The 1B-AB photocatalyst also demonstrated excellent activity against anionic dyes like methyl orange (MO) and malachite green (MG). Hydroxyl radicals (·OH) and superoxide anions (·O) were identified as the main active species in the SN degradation process.
采用一步水热法合成了硼掺杂的BiOBr光催化纳米片。研究了溶剂、温度和硼掺杂量对其形貌和光催化性能的影响。在180℃下用乙酸合成的硼掺杂样品（1B-AB）表现出最佳的光催化性能，在6小时内降解磺胺（SN）的效率达到80%。经过五个循环后，降解率下降了21%。10%的硼掺杂降低了BiOBr的带隙（从2.90 eV降至2.88 eV），提高了可见光利用率并减少了电子-空穴对的复合。1B-AB光催化剂对甲基橙（MO）和孔雀石绿（MG）等阴离子染料也表现出优异的活性。羟基自由基（·OH）和超氧阴离子（·O）被确定为SN降解过程中的主要活性物种。
