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Synthesis of Three‐dimensionally Ordered Macroporous TiO 2 and TiO 2 /WO 3 Composites and Their Photocatalytic Performance
Author(s) -
Huang Kai,
Cai Zhenyu
Publication year - 2018
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201800185
Subject(s) - photocatalysis , materials science , rhodamine b , photodegradation , composite number , x ray photoelectron spectroscopy , polystyrene , colloidal crystal , nanoparticle , chemical engineering , composite material , catalysis , visible spectrum , specific surface area , nanotechnology , colloid , polymer , chemistry , organic chemistry , optoelectronics , engineering
This work presents the characterization and preparation of three‐dimensionally ordered macroporous TiO 2 and TiO 2 /WO 3 composite nanoparticles with enhanced visible‐light‐responsive properties for rhodamine B (Rh B) photodegradation. The 3DOM TiO 2 and TiO 2 /WO 3 composites were prepared through a dip‐infiltrating sol‐gel process using a polystyrene (PS) colloidal crystal template. The materials were characterized by SEM, TEM, XRD, BET, XPS and UV/Vis. The 3DOM TiO 2 /WO 3 composite structures ranged from well‐defined 3DOM structures, which are highly ordered and interconnected via small pore windows, to collapsed three‐dimensional structures as the WO 3 content increased. The photoresponse range and specific surface area of the composite increased with less than 0.025 g of WCl 6 . The 3DOM TiO 2 /WO 3 composite with less than 0.025 g of WCl 6 exhibited a higher catalytic activity than 3DOM TiO 2 for the photocatalytic degradation of Rh B under simulated sunlight illumination.