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SiO 2 ‐Surface‐Assisted Controllable Synthesis of TaON and Ta 3 N 5 Nanoparticles for Alkene Epoxidation
Author(s) -
Gao Qingsheng,
Wang Sig,
Ma Yuchun,
Tang Yi,
Giordano Cristina,
Antonietti Markus
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201107216
Subject(s) - alkene , nanoparticle , selectivity , materials science , urea , chemical engineering , surface modification , nanotechnology , photochemistry , catalysis , chemistry , organic chemistry , engineering
Touching the surface : Well‐defined TaON and Ta 3 N 5 nanoparticles were fabricated by a SiO 2 ‐surface‐assisted urea method, in which silica catalyzes CN x formation from urea. Such controlled nitridation endows the nanoparticles with improved activity and tunable selectivity for alkene epoxidation because of the increased electron density around Ta and surface basicity.