title: Enhanced electrochemiluminescence sensing platform using nitrogen-doped graphene as a novel two-dimensional mat of silver nanoparticles.
abstract: This communication clearly highlights the importance and necessity for a comparison investigation between nitrogen-doped graphene (N-G) and graphene as a two-dimensional mat of metal nanoparticles (NPs). We presented Ag NPs as a model of metal NPs for fabricating Ag/N-G and Ag/graphene nanocomposites, respectively. Compared with Ag/graphene nanocomposites, the Ag/N-G nanocomposites could facilitate the electrochemical redox process of S2O8(2-), and showed improved electrochemiluminescence (ECL) performances including increasing ~2.25-fold ECL intensity and decreasing ~330 mV onset potential of S2O8(2-), respectively. Further, the as-prepared pentachlorophenol ECL sensor based on Ag/N-G nanocomposites showed a wider linear range and lower detection limit than those of the Ag/graphene nanocomposites. This study could be potentially useful for understanding the role of N-G in electrochemistry, and opening a new aspect for exploring and developing potential application of N-G based materials in electrocatalysis and sensing fields.
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Xiaojiao
authors.initials: X
authors.lastname: Du
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Ding
authors.initials: D
authors.lastname: Jiang
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Jing
authors.initials: J
authors.lastname: Qian
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
authors.forename: Hanping
authors.initials: H
authors.lastname: Mao
authors.affiliation: Key Laboratory of Modern Agriculture Equipment and Technology, School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China. Electronic address: wangkun@ujs.edu.cn.
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
keywords: Ag nanoparticle; Enhanced electrochemiluminescence; Nitrogen-doped graphene; Pentachlorophenol detection