title: Synthesis of Platinum Nanotubes and Nanorings via Simultaneous Metal Alloying and Etching.
abstract: Metallic nanotubes represent a class of hollow nanostructures with unique catalytic properties. However, the wet-chemical synthesis of metallic nanotubes remains a substantial challenge, especially for those with dimensions below 50 nm. This communication describes a simultaneous alloying-etching strategy for the synthesis of Pt nanotubes with open ends by selective etching Au core from coaxial Au/Pt nanorods. This approach can be extended for the preparation of Pt nanorings when Saturn-like Au core/Pt shell nanoparticles are used. The diameter and wall thickness of both nanotubes and nanorings can be readily controlled in the range of 14-37 nm and 2-32 nm, respectively. We further demonstrated that the nanotubes with ultrathin side walls showed superior catalytic performance in oxygen reduction reaction.
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University , Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.|Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Zhiqi
authors.initials: Z
authors.lastname: Huang
authors.affiliation: Department of Chemical and Biomolecular Engineering, John Hopkins University , Baltimore, Maryland 21218, United States.
authors.forename: David
authors.initials: D
authors.lastname: Raciti
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University , Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
authors.forename: Shengnan
authors.initials: S
authors.lastname: Yu
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University , Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Zhang
authors.affiliation: Smart Hybrid Materials laboratory (SHMs), Advanced Membranes and Porous Materials Center (AMPMC), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955, Kingdom of Saudi Arabia.
authors.forename: Lin
authors.initials: L
authors.lastname: Deng
authors.affiliation: Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Jie
authors.initials: J
authors.lastname: He
authors.affiliation: Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Yijing
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Smart Hybrid Materials laboratory (SHMs), Advanced Membranes and Porous Materials Center (AMPMC), Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST) , Thuwal 23955, Kingdom of Saudi Arabia.
authors.forename: Niveeen M
authors.initials: NM
authors.lastname: Khashab
authors.affiliation: Department of Chemical and Biomolecular Engineering, John Hopkins University , Baltimore, Maryland 21218, United States.
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.affiliation: Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology, Tianjin University , Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China.
authors.forename: Jinlong
authors.initials: J
authors.lastname: Gong
authors.affiliation: Department of Chemistry and Biochemistry, University of Maryland , College Park, Maryland 20742, United States.
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Nie