title: Direct growth of MnOOH nanorod arrays on a carbon cloth for high-performance non-enzymatic hydrogen peroxide sensing.
abstract: Novel MnOOH nanorod arrays directly growing on a flexible carbon cloth substrate (MnOOH/CC) is first synthesized through a facile hydrothermal technique and utilized as an electrocatalyst for non-enzymatic detection of hydrogen peroxide. The as-prepared MnOOH nanorods are uniformly distributed on the carbon cloth with a 3D porous network structure, which provides a high specific surface area and numerous electroactive sites. The electrode based on the carbon cloth-supported MnOOH nanorod arrays exhibits a higher sensitivity (692.42 μA mM(-1) cm(-2)) and a wider linear range (20 μm-9.67 mM) with a detection limit of 3.2 μM (S/N = 3) compared with the electrode based on the rigid graphite substrate supported the random distributed MnOOH nanorods. Further, the MnOOH/CC possesses an outstanding flexibility and can conveniently be assembled into the required shape for a specific use, thus the arc-shaped MnOOH/CC electrodes are fabricated whose electrocatalytic activity toward the hydrogen peroxide reduction remains nearly unchanged in comparison with the unbent state. Due to its excellent sensitivity, reproducibility, anti-interference and stability, the electrode based on the carbon cloth-supported MnOOH nanorod arrays is believed to be promising for applications in high efficiency flexible hydrogen peroxide sensing.
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China.
authors.forename: Weina
authors.initials: W
authors.lastname: Xu
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China.
authors.forename: Jianlin
authors.initials: J
authors.lastname: Liu
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China.
authors.forename: Mingjun
authors.initials: M
authors.lastname: Wang
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China.
authors.forename: Lin
authors.initials: L
authors.lastname: Chen
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China; School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510641, PR China. Electronic address: msxw@scut.edu.cn.
authors.forename: Xue
authors.initials: X
authors.lastname: Wang
authors.affiliation: Department of Applied Physics, Chongqing University, Chongqing, 400044, PR China. Electronic address: hucg@cqu.edu.cn.
authors.forename: Chenguo
authors.initials: C
authors.lastname: Hu
mesh_terms: D002244:Carbon / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000032:analysis*; D017895:Manganese Compounds / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D043942:Nanotubes; D010087:Oxides / Q000737:chemistry*; D014961:X-Ray Diffraction
chemical_list: D017895:Manganese Compounds; D010087:Oxides; C027424:manganese oxide; D002244:Carbon; D006861:Hydrogen Peroxide
keywords: Carbon cloth; Hydrogen peroxide; Manganite; Nanorod array; Non-enzymatic sensor