CAJ | 학술논문

对海洋营养盐进行快速检测是海洋污染监控中的一项重要任务。测量了硝酸钠溶液蒸发过程中的红外光谱，发现表面增强红外光谱法在营养盐的快速检测中有重要的应用价值。采用Stober方法制备了二氧化硅纳米颗粒，然后采用银氨溶液与二氧化硅溶液混合的方法制备银/二氧化硅（Ag/SiO2）复合材料，并利用扫描电镜（SEM ）、X射线衍射（XRD）以及紫外-可见（UV-Visible）吸收光谱对其进行表征。研究了硝酸钠水溶液干燥过程中Ag/SiO2复合材料对硝酸钠红外吸收光谱的影响，结果表明硝酸根反对称伸缩振动吸收峰的吸收强度得到增强，这可能来自Ag/SiO2薄膜材料的界面效应。
대해양영양염진행쾌속검측시해양오염감공중적일항중요임무。측량료초산납용액증발과정중적홍외광보，발현표면증강홍외광보법재영양염적쾌속검측중유중요적응용개치。채용Stober방법제비료이양화규납미과립，연후채용은안용액여이양화규용액혼합적방법제비은/이양화규（Ag/SiO2）복합재료，병이용소묘전경（SEM ）、X사선연사（XRD）이급자외-가견（UV-Visible）흡수광보대기진행표정。연구료초산납수용액간조과정중Ag/SiO2복합재료대초산납홍외흡수광보적영향，결과표명초산근반대칭신축진동흡수봉적흡수강도득도증강，저가능래자Ag/SiO2박막재료적계면효응。
Quickly detecting of ocean nutrient was one important task in marine pollution monitoring .We discovered the applica-tion of surface-enhanced infrared absorption spectroscopy in the detection of ocean nutrient through researching the evaporation of sodium nitrate solution .The silicon dioxide (SiO2 ) with highly dispersion was prepared by Stober method ,The silver/silica (Ag/SiO2 ) composite materials were prepared by mixing ammonia solution and silicon dioxide aqueous solution .Three kinds of composite materials with different surface morphology were fabricated through optimizing the experimental parameter and chan-ging the experimental process .The surface morphology ,crystal orientation and surface plasmon resonance were investigated by means of the scanning electronic microscope (SEM ) ,X-ray diffraction (XRD) ,UV-Visible absorption spectrum and infrared ab-sorption spectroscopy .The SEM images showed that the sample A was purified SiO2 ,sample B and sample C were mixture of silver nanoparticle and silicon dioxide ,while sample D was completed nanoshell structure .The absorption spectroscopy showed that there was surface plasmon resonance in the UV-visible region ,while there was possibility of surface plasmon resonance in the Infrared absorption region .The effect of Ag/SiO2 composite material on the infrared absorption spectra of sodium nitrite so-lution was investigated through systematically analyzing the infrared absorption spectroscopy of sodium nitrate solution during its evaporation ,i .e .the peak integration area of nitrate and the peak integration area of water molecule .The experimental results show that the integration area of nitrate was enhanced greatly during the evaporation process while the integration area of water molecule decreased continuously .The integration area of nitrate comes from the anti-symmetric stretch vibration and the en-hancement of the vibration is attributed to the interface effect of Ag/SiO2 .which is consistent with Jensen T .R .’s result .