Issue 42, 2016

Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis

Abstract

In this study, a 3-dimensional interconnected hierarchical ordered macro/mesoporous titania (HOPT) with thin walls, crystalline framework, large cavities (āˆ¼420 nm), uniform mesopores (3.7 nm) and high surface area (177 m2 gāˆ’1) was synthesized through a facile bi-template interface-directed deposition method using poly(propylene oxide)-block-poly(ethylene oxide)-block-poly(propylene oxide) (Pluronic P123) triblock polymer as a soft template and structure directing agent, titanium isopropoxide (TIPO) as a titania source and 3-dimensional ordered macroporous carbon (3DOMC) as the hard template and the nanoreactor. This was followed with a two-step thermal treatment in nitrogen and air. Under simulated sunlight irradiation at room temperature, the HOPT shows an ultrahigh photocatalytic activity for the degradation of Rhodamine B (RhB) with a fast reaction rate that is three times higher than commercial titania nanoparticles (P25).

Graphical abstract: Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis

Supplementary files

Article information

Article type
Paper
Submitted
10 Aug 2016
Accepted
16 Sep 2016
First published
16 Sep 2016

J. Mater. Chem. A, 2016,4, 16446-16453

Hierarchical ordered macro/mesoporous titania with a highly interconnected porous structure for efficient photocatalysis

T. Zhao, Y. Ren, J. Yang, L. Wang, W. Jiang, A. A. Elzatahry, A. Alghamdi, Y. Deng, D. Zhao and W. Luo, J. Mater. Chem. A, 2016, 4, 16446 DOI: 10.1039/C6TA06849A

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