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Liquid Photonic Crystals for Mesopore Detection
Author(s) -
Zhu Biting,
Fu Qianqian,
Chen Ke,
Ge Jianping
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.201710456
Subject(s) - photonic crystal , materials science , mesoporous material , photonics , nanotechnology , optoelectronics , optics , chemistry , physics , catalysis , biochemistry
Abstract Nitrogen adsorption–desorption for mesopore characterization requires the using of expensive instrumentation, time‐consuming processes, and the consumption of liquid nitrogen. Herein, a new method is developed to measure the pore parameters through mixing a mesoporous substance with a supersaturated SiO 2 colloidal solution at different temperatures, and subsequent rapid measurement of reflection changes of the precipitated liquid photonic crystals. The pore volumes and diameters of mesoporous silica were measured according to the positive correlation between unit mass reflection change (Δ λ /m) and pore volume ( V ), and the negative correlation between average absorption temperature ( T ) and pore diameter ( D ). This new approach may provide an alternative method for fast, convenient and economical characterization of mesoporous materials.