Synthesis of novel BiOCl/LiBiO3 p-n heterojunction photocatalysts and their enhanced photocatalytic performance

被引：16
作者：
Wang, Yan [1 ]
Jung, Dongwoon [2 ]
机构：
[1] Hebei Normal Univ Nationalities, Dept Chem & Chem Engn, Chengde 067000, Peoples R China
[2] Wonkwang Univ, Dept Chem, Iksan 570749, Jeonbuk, South Korea
来源：
SOLID STATE SCIENCES | 2019年 / 91卷
关键词：
BiOCl/LiBiO3 p-n heterojunction photocatalytic activity visible light photocatalytic mechanism; GRAPHITIC CARBON NITRIDE; HIGHLY EFFICIENT; NANOCOMPOSITES; NANOPARTICLES; CONSTRUCTION; DEGRADATION; NANOSHEETS; SYSTEM; COMPOSITES; REDUCTION;
D O I：
10.1016/j.solidstatesciences.2019.03.013
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The hierarchical nanoplates-like BiOCl/LiBiO3 p-n heterojunction composites were synthesized by a simple in situ formation approach. The as-synthesized samples were characterized by X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), N-2 adsorption-desorption and UV-vis diffuse reflectance spectroscopy (DRS). In addition, their photocatalytic activities were tested by detecting the degradation of RhB under visible light irradiation. The BiOCl/LiBiO3 composites exhibited higher photocatalytic efficiency than the single BiOCl or LiBiO3. The BiOCl/LiBiO3 composites with the molar ratio of 85/15 showed the highest photocatalytic performance. Superoxide radical anions (center dot O-2(-)), hydroxyl free adicals (center dot OH), photogenerated holes (h(+)) and photogenerated electrons (e(-)) reactive species cooperate during the photocatalytic process. It is expected that the novel BiOCl/LiBiO3 p-n heterostructured photocatalyst would be a promising candidate for environmental remediation.
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收藏
页码：42 / 48
页数：7
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