title: High density decoration of noble metal nanoparticles on polydopamine-functionalized molybdenum disulphide.
abstract: Here, we report a highly stable colloidal suspension of nanoparticles (i.e., Pt and Au)-deposited MoS2 sheets, in which polydopamine (PD) serves as surface functional groups. The adoption of polydopamine coating onto the MoS2 surface enables homogeneous deposition of nanoparticles in an aqueous solution. As-synthesized nanohybrids are thoroughly characterized by transmission electron microscopy (TEM), Raman spectroscopy, and X-ray diffraction (XRD) measurement. These intensive investigations reveal that noble metal nanocrystals are uniformly distributed on the surface of ultrathin MoS2 sheets (∼4 layers). Moreover, as-prepared Au/PD/MoS2 nanohybrids can be applied as a heterogeneous catalyst for reduction of 4-nitrophenol to 4-aminophenol, and they exhibit an excellent catalytic activity.
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, Republic of Korea; Department of Advanced Materials Engineering, Kangwon National University, Samcheok 245-711, Republic of Korea.
authors.forename: Muhammad Asif
authors.initials: MA
authors.lastname: Hussain
authors.affiliation: Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Republic of Korea.
authors.forename: MinHo
authors.initials: M
authors.lastname: Yang
authors.affiliation: Department of Nano Bio Research, National NanoFab Center (NNFC), Daejeon 305-701, Republic of Korea.
authors.forename: Tae Jae
authors.initials: TJ
authors.lastname: Lee
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, Republic of Korea. Electronic address: jwemye@kangwon.ac.kr.
authors.forename: Jung Won
authors.initials: JW
authors.lastname: Kim
authors.affiliation: Department of Chemical Engineering, Kangwon National University, Samcheok 245-711, Republic of Korea. Electronic address: bgchoi@kangwon.ac.kr.
authors.forename: Bong Gill
authors.initials: BG
authors.lastname: Choi
mesh_terms: D003102:Colloids / Q000737:chemistry; D004220:Disulfides / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D046529:Microscopy, Electron, Transmission; D008982:Molybdenum / Q000737:chemistry*; D010984:Platinum / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014961:X-Ray Diffraction
chemical_list: D003102:Colloids; D004220:Disulfides; D007211:Indoles; D011108:Polymers; C568283:polydopamine; D010984:Platinum; D006046:Gold; D008982:Molybdenum; C082964:molybdenum disulfide
keywords: Chemical synthesis; Composite materials; Nanostructures; Polymers; Ultrasonic techniques