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PdPt Alloy Nanocatalysts Supported on TiO 2 : Maneuvering Metal–Hydrogen Interactions for Light‐Driven and Water‐Donating Selective Alkyne Semihydrogenation
Author(s) -
Li Mengqiao,
Zhang Ning,
Long Ran,
Ye Wei,
Wang Chengming,
Xiong Yujie
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201604173
Subject(s) - nanomaterial based catalyst , alkyne , alloy , materials science , metal , hydrogen , chemical engineering , nanotechnology , catalysis , chemistry , metallurgy , organic chemistry , engineering
Low power consumption and minimal potential hazards are ultimate goals for the modern development of chemical manufacturing; however, it often reduces the selectivity of chemical reactions by implementing a new reaction system. A nanocatalyst design is reported for achieving efficient and selective alkyne semihydrogenation through the photocatalytic hydrogen transfer from water, which avoids the use of a heat source and explosive H 2 . The PdPt catalytic sites that are implemented on the TiO 2 photocatalyst hold the key to achieving both high activity and selectivity. As compared with pure Pd or Pt, the alloy cocatalysts can better harness H diffusion/desorption for selective semihydrogenation as well as suppress competitive H 2 evolution. This work opens up new possibilities for green and selective alkyne semihydrogenation and highlights the importance of lattice engineering to catalytic selectivity.