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Chemical Engineering of Photoactivity in Heterometallic Titanium–Organic Frameworks by Metal Doping
Author(s) -
CastellsGil Javier,
Padial Natalia M.,
AlmoraBarrios Neyvis,
Albero Josep,
RuizSalvador A. Rabdel,
GonzálezPlatas Javier,
García Hermenegildo,
MartíGastaldo Carlos
Publication year - 2018
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.201802089
Subject(s) - materials science , dopant , doping , photocatalysis , surface modification , titanium , metal organic framework , linker , band gap , porosity , metal , nanotechnology , chemical engineering , inorganic chemistry , catalysis , optoelectronics , organic chemistry , metallurgy , chemistry , composite material , computer science , operating system , adsorption , engineering
We report a new family of titanium–organic frameworks that enlarges the limited number of crystalline, porous materials available for this metal. They are chemically robust and can be prepared as single crystals at multi‐gram scale from multiple precursors. Their heterometallic structure enables engineering of their photoactivity by metal doping rather than by linker functionalization. Compared to other methodologies based on the post‐synthetic metallation of MOFs, our approach is well‐fitted for controlling the positioning of dopants at an atomic level to gain more precise control over the band‐gap and electronic properties of the porous solid. Changes in the band‐gap are also rationalized with computational modelling and experimentally confirmed by photocatalytic H 2 production.