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A Novel High‐Throughput Screening of Multicomponent Photocatalysts for Decomposition of Organic Pollutants Based on Fluorescence Imaging
Author(s) -
Zhang Meijuan,
Lee Jianchao,
Wang Liping,
Duan Qianlan,
Zhang Jiarui,
Qi Hailang
Publication year - 2015
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.201500936
Subject(s) - catalysis , microreactor , x ray photoelectron spectroscopy , fluorescence , scanning electron microscope , decomposition , fluorescence spectroscopy , materials science , nanotechnology , chemical engineering , chemistry , organic chemistry , optics , physics , engineering , composite material
A novel high‐throughput screening (HTS) method based on fluorescence imaging was developed for the exploration of photocatalysts. In our HTS method, UV lithography technique was adopted to prepare a chip with 1262 independent microreactors. Aiming to fabricate a large group of catalysts, we selected the sulfides of six metals, Cd, Ni, Zn, Sr, Ce, Y to modify nano‐MoS 2 . In practice, a color ink‐jet printing technology was adapted to obtain a catalyst library. The structural feature and chemical composition of the individual catalysts were typically characterized by scanning electron microscopy and X‐ray photoelectron spectroscopy. The catalytic performance of the library was evaluated with fluorescence imaging. The selected catalysts with the highest catalytic activity are the following three combinations of (Cd 0.03 Ni 0.77 Zn 0.04 Sr 0.02 Ce 0.12 Y 0.01 )S x /MoS 2 , (Cd 0.23 Ni 0.06 Zn 0.18 Sr 0.00 Ce 0.26 Y 0.27 ) S x /MoS 2 , and (Cd 0.04 Ni 0.32 Zn 0.31 Sr 0.00 Ce 0.18 Y 0.15 )S x /MoS 2 , which were verified in conventional batch reactions.