title: Supercritical carbon dioxide-assisted rapid synthesis of few-layer black phosphorus for hydrogen peroxide sensing.
abstract: Solutions with large-scale dispersions of 2D black phosphorus (BP), often referred to as phosphorene, are obtained through solvent exfoliation. But, rapid phosphorene synthesis remains a challenge. Furthermore, although the chemical sensing capability of BP-based sensors has been theoretically predicted, its experimental verification remains lacking. In this study, we demonstrate the use of supercritical carbon dioxide-assisted rapid synthesis (5h) of few-layer BP. In addition, we construct a non-enzymatic hydrogen peroxide (H2O2) sensor based on few-layer BP for the first time to utilize BP degradation under ambient conditions. The proposed H2O2 sensor exhibits a considerably lower detection limit of 1 × 10(-7) M compared with the general detection limit of 1 × 10(-7) M-5 × 10(-5)M via electrochemical methods. Overall, the results of this study will not only expand the coverage of BP research but will also identify the important sensing characteristics of BP.
authors.affiliation: School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China. Electronic address: yansc@njupt.edu.cn.
authors.forename: Shancheng
authors.initials: S
authors.lastname: Yan
authors.affiliation: School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China.
authors.forename: Bojun
authors.initials: B
authors.lastname: Wang
authors.affiliation: Community Health Service Center of ZhongHuaMen, Nanjing 210046, China.
authors.forename: Zhulan
authors.initials: Z
authors.lastname: Wang
authors.affiliation: School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China.
authors.forename: Dong
authors.initials: D
authors.lastname: Hu
authors.affiliation: School of Geography and Biological Information, Nanjing University of Posts and Telecommunications, Nanjing 210023, PR China.
authors.forename: Xin
authors.initials: X
authors.lastname: Xu
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, PR China.
authors.forename: Junzhuan
authors.initials: J
authors.lastname: Wang
authors.affiliation: National Laboratory of Solid State Microstructures, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, PR China. Electronic address: yshi@nju.edu.cn.
authors.forename: Yi
authors.initials: Y
authors.lastname: Shi
mesh_terms: D015374:Biosensing Techniques; D002245:Carbon Dioxide / Q000138:chemical synthesis / Q000737:chemistry*; D055664:Electrochemical Techniques; D006861:Hydrogen Peroxide / Q000302:isolation & purification*; D010758:Phosphorus / Q000737:chemistry
chemical_list: D002245:Carbon Dioxide; D010758:Phosphorus; D006861:Hydrogen Peroxide
keywords: Few-layered black phosphorus; Hydrogen peroxide sensing; Rapid synthesis; Supercritical carbon dioxide