Shape-controlled gold nanoparticles supported on MoS2 nanosheets: synergistic effect of thionine and MoS2 and their application for electrochemical label-free immunosensing
Su, S; Zou, M; Zhao, H; Yuan, CF; Xu, YA; Zhang, C; Wang, LH; Fan, CH; Wang, LH; Su, S (reprint author), Nanjing Univ Posts & Telecommun, KLOEID, IAM, Natl Synergist Innovat Ctr Adv Mat SICAM, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China.
2015
发表期刊NANOSCALE
ISSN2040-3364
卷号7期号:45页码:19129—19135
文章类型期刊文献
摘要Herein, a facile approach for shape-controlled gold nanoparticle (AuNP) decorated thionine-MoS2 nanocomposites (AuNP-Thi-MoS2) had been reported by using the synergistic effect of MoS2 and Thi. Thi was not only used as an electrochemical indicator, but also as a reducing agent to tune the resulting morphologies of AuNPs. With the ratio of MoS2/Thi decreasing, the shapes of AuNPs changed from spherical, triangle, clover-like to flower-like nanostructures. TEM, XRD and XPS were employed to characterize the formation and chemical composition of AuNP-Thi-MoS2 nanocomposites. On the basis of synthesis, a MoS2-based label-free electrochemical immunosensor had been designed to detect carcino-embryonic antigen (CEA). The proposed immunosensor could detect as low as 0.52 pg mL(-1) CEA with excellent selectivity. Moreover, the expected immunosensor showed high stability and excellent reproducibility, which could detect CEA in human serum with satisfactory results. Therefore, the AuNP-Thi-MoS2 nanocomposites may be considered as a candidate sensing platform for fabrication of simple, label-free and ultrasensitive electrochemical sensors.
关键词Glassy-carbon Electrode Horseradish-peroxidase Alpha-fetoprotein Carcinoembryonic Antigen Graphene Nanocomposites Catalytic-activity Tumor-markers Platform Au Electrocatalysis
语种英语
WOS记录号WOS:000364852500038
引用统计
被引频次:39[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25037
专题中科院上海应用物理研究所2011-2018年
通讯作者Su, S (reprint author), Nanjing Univ Posts & Telecommun, KLOEID, IAM, Natl Synergist Innovat Ctr Adv Mat SICAM, 9 Wenyuan Rd, Nanjing 210023, Jiangsu, Peoples R China.
推荐引用方式
GB/T 7714
Su, S,Zou, M,Zhao, H,et al. Shape-controlled gold nanoparticles supported on MoS2 nanosheets: synergistic effect of thionine and MoS2 and their application for electrochemical label-free immunosensing[J]. NANOSCALE,2015,7(45):19129—19135.
APA Su, S.,Zou, M.,Zhao, H.,Yuan, CF.,Xu, YA.,...&Su, S .(2015).Shape-controlled gold nanoparticles supported on MoS2 nanosheets: synergistic effect of thionine and MoS2 and their application for electrochemical label-free immunosensing.NANOSCALE,7(45),19129—19135.
MLA Su, S,et al."Shape-controlled gold nanoparticles supported on MoS2 nanosheets: synergistic effect of thionine and MoS2 and their application for electrochemical label-free immunosensing".NANOSCALE 7.45(2015):19129—19135.
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