摘要
以红磷、六方氮化硼为原料通过一步溶剂热法合成绿色环保型非金属六方氮化硼/黑磷(h-BN/BP)异质结,该法制备工艺简单、成本低廉。利用XRD、XPS、SEM、UV-Vis对样品的结构、形貌、光学等性能进行表征。结果表明:h-BN/BP异质结通过范德华作用稳定形成,h-BN较均匀地负载于BP上,h-BN/BP异质结的成功合成有效提升了BP的稳定性。紫外-可见光谱表明h-BN/BP异质结与h-BN相比,光响应范围从紫外区向红外区变化,禁带宽度由4.76 eV减小至2.31 eV。h-BN/BP光催化剂对亚甲基蓝去除率为92.35%(相比h-BN和BP光催化降解率显著提高)。光催化机理研究表明·OH与·O_(2)^(-)是主要活性物。
The green and environment-friendly non-metallic hexagonal boron nitride/black phosphorus(h-BN/BP)heterostructure was synthesized by solvothermal method using red phosphorus and hexagonal boron nitride as raw materials.XRD,XPS,SEM,UV-Vis methods were used to analyze the composition,structure,morphology and optical property of the sample.The results showed that h-BN/BP heterostructure was stabilized by Van der Waals interactions,h-BN was uniformly loaded on BP.The successful synthesis of h-BN/BP effectively improved the stability of BP.The UV-vis spectrum indicated that the band gap decreased from 4.76 eV to 2.31 eV due to the expansion of the light response range from the UV to the infrared region.The removal rate of methylene blue by h-BN/BP photocatalyst was 92.35%,which was significantly higher than that of h-BN and BP monomers.The photocatalytic mechanism study showed that·OH and ·O_(2)^(-),were the main active substance.
作者
李素
邓磊
隋健鸿
黄文章
LI Su;DENG Lei;SUI Jianhong;HUANG Wenzhang(Chongqing University of Science and Technology,Chongqing 401331,China;Chongqing Tianmei environmental protection Engineering Co.,Ltd.,Chongqing 401331,China;Chongqing Yukeyuan environmental protection Technology Co.,Ltd.,Chongqing 401331,China)
出处
《当代化工》
CAS
2024年第3期672-675,686,共5页
Contemporary Chemical Industry
关键词
氮化硼
黑磷
异质结
光催化
Boron nitride
Black phosphorus
Heterostructure
Photocatalysis
