A visual photothermal paper sensor for H_2S recognition through rational modulation LSPR wavelength of plasmonics

作     者：Hui Wang Jiabin Cui Anila Arshad Suying Xu Leyu Wang 

作者机构：State Key Laboratory of Chemical Resource Engineering School of Science Beijing University of Chemical Technology 

出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)

年 卷 期：2018年第61卷第3期

页      面：368-374页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080202[工学-机械电子工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(21725501,21475007,21675009,21505003) the Fundamental Research Funds for the Central Universities(buctrc201706,buctrc201720) 

主　　题：纸传感器 合理调整 波长 视觉 识别 局部性 几何学 NP 

摘      要：It is known that the localized surface plasmon resonance(LSPR) wavelength of plasmonics is highly dependent on compositions and geometry of plasmonics as well as the surrounding environments. Here, monodispersed Au@Ag core-shell nanoparticles(Au@Ag NPs) were prepared by carefully optimizing the shell thickness of Au@Ag NPs, and the presence of hydrogen sulfide(H_2 S) would significantly alter the LSPR wavelength. On the basis of this, a photothermal paper sensor for on-site recognition of H_2 S was constructed with a visual detection limit of 12.8 ng/L.