title: Liquid-phase growth of platinum nanoparticles on molybdenum trioxide nanosheets: an enhanced catalyst with intrinsic peroxidase-like catalytic activity.
abstract: A facile method for the synthesis of metal nanostructure-decorated two-dimensional (2D) semiconductor nanosheets was developed. The solution-processable molybdenum trioxide (MoO3) nanosheet was used as a template for direct liquid-phase growth of platinum nanoparticles (Pt NPs) under ambient conditions. Results show that the Pt NPs with sizes of 1-3 nm were uniformly grown on the MoO3 surface. Importantly, the Pt-MoO3 hybrid nanomaterial exhibits an enhanced peroxidase-like catalytic activity compared to the MoO3 nanosheet, Pt NPs, and their physical mixture under the same conditions. As a proof-of-concept application, the Pt-MoO3 hybrid nanomaterial was used as a high-efficiency peroxidase-mimic for ultrasensitive colorimetric detection of glucose in serum samples. This work provides a promising strategy for design and development of biomimetic catalysts by smart assembly of different dimensional nanomaterials.
authors.affiliation: School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore. hzhang@ntu.edu.sg.
authors.forename: Yixian
authors.initials: Y
authors.lastname: Wang
authors.forename: Xiao
authors.initials: X
authors.lastname: Zhang
authors.forename: Zhimin
authors.initials: Z
authors.lastname: Luo
authors.forename: Xiao
authors.initials: X
authors.lastname: Huang
authors.forename: Chaoliang
authors.initials: C
authors.lastname: Tan
authors.forename: Hai
authors.initials: H
authors.lastname: Li
authors.forename: Bing
authors.initials: B
authors.lastname: Zheng
authors.forename: Bing
authors.initials: B
authors.lastname: Li
authors.forename: Ying
authors.initials: Y
authors.lastname: Huang
authors.forename: Jian
authors.initials: J
authors.lastname: Yang
authors.forename: Yun
authors.initials: Y
authors.lastname: Zong
authors.forename: Yibin
authors.initials: Y
authors.lastname: Ying
authors.forename: Hua
authors.initials: H
authors.lastname: Zhang
mesh_terms: D032701:Biomimetics; D002138:Calibration; D002384:Catalysis; D003124:Colorimetry; D005947:Glucose / Q000032:analysis; D006861:Hydrogen Peroxide / Q000737:chemistry; D006863:Hydrogen-Ion Concentration; D007700:Kinetics; D053768:Metal Nanoparticles / Q000737:chemistry*; D008982:Molybdenum / Q000737:chemistry*; D036103:Nanotechnology; D010087:Oxides / Q000737:chemistry*; D010544:Peroxidases / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D010087:Oxides; C082290:molybdenum trioxide; D010984:Platinum; D008982:Molybdenum; D006861:Hydrogen Peroxide; D010544:Peroxidases; D005947:Glucose