title: Tethering metal ions to photocatalyst particulate surfaces by bifunctional molecular linkers for efficient hydrogen evolution.
abstract: A simple and versatile method for the preparation of photocatalyst particulates modified with effective cocatalysts is presented; the method involves the sequential soaking of photocatalyst particulates in solutions containing bifunctional organic linkers and metal ions. The modification of the particulate surfaces is a universal and reproducible method because the molecular linkers utilize strong covalent bonds, which in turn result in modified monolayer with a small but controlled quantity of metals. The photocatalysis results indicated that the CdS with likely photochemically reduced Pd and Ni, which were initially immobilized via ethanedithiol (EDT) as a linker, were highly efficient for photocatalytic hydrogen evolution from Na2S-Na2SO3-containing aqueous solutions. The method developed in this study opens a new synthesis route for the preparation of effective photocatalysts with various combinations of bifunctional linkers, metals, and photocatalyst particulate materials.
authors.affiliation: Division of Physical Sciences and Engineering, KAUST Catalysis Center (KCC), King Abdullah University of Science and Technology (KAUST), 4700 KAUST, Thuwal, 23955-6900 (Saudi Arabia); School of Materials Science and Engineering, Changchun University of Science and Technology, 7989 Weixing Rd, Chaoyang, Changchun, Jilin, 130022 (PR China).
authors.forename: Weili
authors.initials: W
authors.lastname: Yu
authors.forename: Tayirjan
authors.initials: T
authors.lastname: Isimjan
authors.forename: Silvano
authors.initials: S
authors.lastname: Del Gobbo
authors.forename: Dalaver H
authors.initials: DH
authors.lastname: Anjum
authors.forename: Safwat
authors.initials: S
authors.lastname: Abdel-Azeim
authors.forename: Luigi
authors.initials: L
authors.lastname: Cavallo
authors.forename: Angel T
authors.initials: AT
authors.lastname: Garcia-Esparza
authors.forename: Kazunari
authors.initials: K
authors.lastname: Domen
authors.forename: Wei
authors.initials: W
authors.lastname: Xu
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Takanabe
mesh_terms: D002384:Catalysis; D006859:Hydrogen / Q000737:chemistry*; D008958:Models, Molecular; D008968:Molecular Conformation; D009532:Nickel / Q000737:chemistry*; D010165:Palladium / Q000737:chemistry*; D055668:Photochemical Processes; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D013440:Sulfides; D010165:Palladium; D009532:Nickel; D006859:Hydrogen; C033479:sodium sulfide
keywords: ethanedithiol; hydrogen; nickel; photocatalysis; sulfur