Preparation and Visible Light Responsive Photocatalytic Activity of Nitrogen-doped Bi2O3 Photocatalyst
Source abstract
Abstract
以硝酸铋和六次甲基四胺为原料, 采用沉淀法合成了不同氮掺杂量的Bi 2 O 3 (N-Bi 2 O 3 )粉体, 并采用XRD、FT-IR、XPS、UV-Vis、PL手段对其晶相结构和光谱特征等进行了表征. 研究结果表明, 未掺杂Bi 2 O 3 为单斜相α-Bi 2 O 3 , 氮掺杂Bi 2 O 3 则为四方相β-Bi 2 O 3 和Bi 5 O 7 NO 3 组成的混晶, 氮原子替代了Bi 2 O 3 晶格中部分氧原子, 形成了Bi-N键而稳定存在. 氮掺杂能促进β-Bi 2 O 3 的生成. 与未掺杂Bi 2 O 3 粉体相比, 氮掺杂样品的吸收带边发生了明显红移, 荧光强度明显减弱. 甲基橙在可见光下的降解实验表明, 氮掺杂Bi 2 O 3 具有良好的可见光催化活性.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Catalytic Processes in Materials Science · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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