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Surface Silylation of Hybrid Benzidinium Lead Perovskite and its Influence on the Photocatalytic Activity
Author(s) -
Peng Yong,
Albero Josep,
García Hermenegildo
Publication year - 2019
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201901681
Subject(s) - silanization , photocatalysis , perovskite (structure) , iodide , coating , materials science , silylation , chemical engineering , transmission electron microscopy , isomerization , catalysis , chemistry , photochemistry , inorganic chemistry , nanotechnology , organic chemistry , composite material , engineering
Surface coating of benzidinium lead iodide perovskite has been successfully accomplished by silanization with three different silylating agents, obtaining samples with average thickness from 2 to 6 nm as revealed by transmission electron microscopy. The obtained (organo)silica‐coated hybrid perovskites exhibit enhanced hydrophobic character and, therefore, increased stability against moisture. However, its photocatalytic activity towards the cis‐ to ‐trans isomerization of stilbene diminishes as a function of the coating thickness, although a notable activity for this photocatalytic reaction is still observed.