Synthesis of PbS Intercalated K4Nb6O17 Composite and Its Photocatalytic Activity for Hydrogen Production
Source abstract
Abstract
采用固相法合成层状半导体K 4 Nb 6 O 17 , 通过层间离子交换反应、胺插入反应以及硫化反应制备了纳米PbS插层的K 4 Nb 6 O 17 复合光催化剂(记作K 4 Nb 6 O 17 /PbS). 利用X射线衍射(XRD), 场发射扫描电镜(SEM), X射线荧光光谱仪(XRF), 紫外-可见漫反射(UV-Vis)和分子荧光光谱(PL)等技术对其进行表征. 考察了催化剂在Na 2 SO 3 和Na 2 S为牺牲剂的光催化制氢活性. 结果表明, PbS的插层拓展了K 4 Nb 6 O 17 对可见光的响应, 催化制氢活性也有明显提高. 在紫外光和可见光下3 h产氢量分别达到123.94和0.66 mmol/(g cat). 最后讨论了插层复合催化剂光生电荷转移的机理.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Polyoxometalates: Synthesis and Applications · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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