Enhanced photocatalytic activity of MWCNT/TiO2 heterojunction photocatalysts obtained by microwave assisted synthesis

被引：28

作者：

Caudillo-Flores, U. ^{[1
]}

Lara-Romero, J. ^{[1
]}

Zarate-Medina, J. ^{[2
]}

Munoz-Batista, M. J. ^{[3
]}

Huirache-Acuna, R. ^{[1
]}

Rivera-Munoz, E. M. ^{[4
]}

Cortes, J. A. ^{[1
]}

机构：

[1] Univ Michoacana, Fac Ingn Quim, Div Estudios Posgrado, Morelia 58030, Michoacan, Mexico

[2] Univ Michoacana, Inst Invest Met, Morelia 58030, Michoacan, Mexico

[3] CSIC, Inst Catalisis & Petroleoquim, Marie Curie 2, Madrid 28049, Spain

[4] Univ Nacl Autonoma Mexico, Ctr Fis Aplicada & Tecnol Avanzada, AP 1-1010, Queretaro 76000, Mexico

来源：

CATALYSIS TODAY | 2016年 / 266卷

关键词：

Titanium dioxide; Carbon nanotubes; Heterojunction; Microwave assisted synthesis; Photocatalytic activity; Dye degradation; CARBON NANOTUBES; TIO2-BASED PHOTOCATALYSTS; TIO2; PHOTOCATALYST; METHYLENE-BLUE; AZO-DYE; DEGRADATION; COMPOSITES; PHOTODEGRADATION; NANOCOMPOSITES; NANOCATALYSTS;

D O I：

10.1016/j.cattod.2015.12.005

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Herein reported are the synthesis and the photocatalytic activity of MWCNT/TiO2 heterojunction photocatalysts obtained by microwave-assisted method using titanium butoxide as precursor. The obtained materials were characterized by XRD, Raman, SEM, TEM, UV-vis, FTIR, surface area (BET) and photoluminescence. The characterization results showed that the addition of MWCNT did not provide structural changes on TiO2. The photocatalytic activities of the synthesized materials were investigated using acid blue 9 dye as a model molecule. The results indicate an enhancement on photocatalytic activity by the addition of low amount of MWCNT (1 and 3 wt%). The improvement is attained to the synergic effect between TiO2 and MWCNT which reduces the electronhole pair recombination according with the photoluminescence study. In this way, a proposed schema for the enhanced photoactivity of the MWCNT/TiO2 heterojunction photocatalyst is discussed. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：102 / 109

页数：8

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