CAJ | 학술논문

采用溶剂热法合成了具有不同晶粒尺寸的聚乙烯吡咯烷酮(PVP)修饰的CdS纳米晶,并运用XRD,N2物理吸附,TEM,IR,UV-Vis等手段进行表征.结果表明,所制得的样品均为聚乙烯吡咯烷酮(PVP)修饰的CdS纳米晶;添加四甲基氢氧化铵(TMAH)有利于获得晶粒尺寸较小的CdS纳米晶;受纳米晶粒尺寸的影响,CdS纳米晶的吸收边发生蓝移且可见光催化活性明显提高.
채용용제열법합성료구유불동정립척촌적취을희필각완동(PVP)수식적CdS납미정,병운용XRD,N2물리흡부,TEM,IR,UV-Vis등수단진행표정.결과표명,소제득적양품균위취을희필각완동(PVP)수식적CdS납미정;첨가사갑기경양화안(TMAH)유리우획득정립척촌교소적CdS납미정;수납미정립척촌적영향,CdS납미정적흡수변발생람이차가견광최화활성명현제고.
Poly (N-vinyl-2-pyrrolidone)-capped CdS nanocrystals with different crystalline sizes were synthesized through a simple solvothermal method. The structures of the as-synthesized samples were characterized by XRD, N2 physisorption, TEM, IR spectroscopy, and UV-Vis spectroscopy. The results show that the as-synthesized samples are poly (N-vinyl-2-pyrrolidone)-capped CdS nanohybrid materials; the grain size of CdS nanocrystals is smaller when tetramethylammonium hydroxide(TMAH) is introduced in the reaction system. In addition, it is also found that the bandgap of CdS nanocrystals is blue shifted and the visible-light photocatalytic activity of the sample synthesized in the presence of TMAH increases due to the size effect.