Xiaomei Zhao1, Shiwei Zhou1, Liping Jiang1, Wenhua Hou1, Qingming Shen2,1, Jun‐Jie Zhu1
1State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China
2Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials, Nanjing University of Posts and Telecommunications, Nanjing, 210046 (P. R. China)
Tóm tắt
AbstractGraphene–CdS (GR–CdS) nanocomposites were prepared in a one‐step synthesis in aqueous solution. The synthetic approach was simple and fast, and it may be extended for the synthesis of other GR–metal‐sulfide nanocomposites. The as‐prepared GR–CdS nanocomposite films inherited the excellent electron‐transport properties of GR. In addition, the heteronanostructure of the GR–CdS nanocomposites facilitated the spatial separation of the charge carriers, thus resulting in enhanced photocurrent intensity, which makes it a promising candidate for photoelectrochemical applications. This strategy was used for the fabrication of an advanced photoelectrochemical cytosensor, based on these GR–CdS nanocomposites, by using a layer‐by‐layer assembly process. This photoelectrochemical cytosensor showed a good photoelectronic effect and cell‐capture ability, and had a wide linear range and low detection limit for Hela cells. The as‐synthesized GR–CdS nanocomposites exhibited obviously enhanced photovoltaic properties, which could be an efficient platform for many other high‐performance photovoltaic devices.
