Metal-organic framework templated synthesis of TiO2@MIL-101 core-shell architectures for high-efficiency adsorption and photocatalysis

被引：33

作者：

Chang, Na ^{[1
]}

Zhang, Hao ^{[1
]}

Shi, Meng-Shan ^{[1
]}

Li, Jia ^{[1
]}

Shao, Wei ^{[1
]}

Wang, Hai-Tao ^{[1
]}

机构：

[1] Tianjin Polytech Univ, Tianjin Engn Ctr Safety Evaluat Water Qual & Safe, State Key Lab Separat Membranes & Membrane Proc, Coll Environm & Chem Engn, Tianjin 300387, Peoples R China

来源：

MATERIALS LETTERS | 2017年 / 200卷

基金：

中国国家自然科学基金;

关键词：

Metal-organic framework; Core-shell; TiO2; Photocatalysis; Composite materials; Microstructure; AQUEOUS-SOLUTION;

D O I：

10.1016/j.matlet.2017.04.099

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report a simple method for preparation of MIL-101 templated TiO2@MIL-101 core-shell architecture, and endeavor to investigate the synergism of TiO2@MIL-101 core-shell composite for the high efficiency adsorption and decomposition of methyl orange (MO). XRD patterns, SEM and TEM images confirmed the core-shell architecture of TiO2@MIL-101 composite. Ti/Cr element ratio of the TiO2@MIL-101 composite from EDAX analysis was 14.8 wt%, which was similar to the calculated 15.8 wt% value. The fabricated composite possessed mesopores with total-pore-volume of 0.475 cm(3) g(-1) and BET surface area of 1033 m(2) g(-1). MIL-101 templated TiO2@MIL-101 core-shell composite possessed excellent ability for the adsorption of MO, with the maximum adsorption capacity of 19.23 mg g(-1) based on theoretical calculation. Furthermore, higher MO removal efficiency was achieved compared to MIL-101 and TiO2 when TiO2@MIL-101 core-shell composite was used as adsorbent and catalyst, which only took 30 min to reach removal efficiency of 99% under UV irradiation. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：55 / 58

页数：4

共 12 条

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