摘要
文章采用表面增强拉曼散射(surface-enhanced Raman scattering,SERS)技术对亚甲基蓝的降解反应过程进行原位实时监测。以银纳米线和苯乙烯-乙烯-丁烯-苯乙烯(SEBS)嵌段共聚物为材料,通过界面组装方法成功制备了高效、通用的SERS基底。该基底具有超疏水作用,接触角达到121.3°,保证了亚甲基蓝降解过程的原位实时监测;该基底具有超高的SERS响应,实验证明,基底对亚甲基蓝的检出限低至10^(-13) mol/L;具有良好的信号重现性,相对标准偏差(relative standard deviation,RSD)为9.26%。此外,作为一种实用的SERS基底,能够催化硼氢化钠对亚甲基蓝的降解,结果表明,SERS基底具有良好的催化效果,在150 s内亚甲基蓝的降解率高达99.90%。
In this paper,surface-enhanced Raman scattering(SERS)technique was used to monitor the degradation process of methylene blue in situ and in real time.Using silver nanowires and styrene-ethylene-butene-styrene(SEBS)block copolymer as materials,an efficient and universal SERS substrate was successfully prepared by interface assembly method.The substrate has a superhydrophobic effect and the contact angle reaches 121.3°,which ensures the in situ real-time monitoring of methylene blue degradation process.Meanwhile,the SERS response is extremely high.Experiments prove that the detection limit of methylene blue is as low as 10^(-13) mol/L.The substrate also has good signal reproducibility,with a relative standard deviation(RSD)of 9.26%.In addition,as a practical SERS substrate,it can catalyze the degradation of methylene blue by sodium borohydride.The results show that the SERS substrate has a good catalytic effect,and the degradation rate of methylene blue is up to 99.90%in 150 s.
作者
耿玉闯
苏梦可
王贤
郑立勤
刘洪林
GENG Yuchuang;SU Mengke;WANG Xian;ZHENG Liqin;LIU Honglin(School of Food and Biological Engineering,Hefei University of Technology,Hefei 230601,China)
出处
《合肥工业大学学报(自然科学版)》
北大核心
2025年第6期811-816,共6页
Journal of Hefei University of Technology:Natural Science
基金
国家自然科学基金资助项目(21922403,22274034,22204039)
安徽省重点研究与开发计划资助项目(202104a07020013)
安徽省自然科学基金资助项目(2108085QB84)。
