一维碳纤维承载AgX/TiO2(X=Br, I)三元复合材料的制备及光催化性能

doi:10.7503/cjcu20160858

高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (6): 947.doi: 10.7503/cjcu20160858

• 中国第四届静电纺丝大会专题研究论文 • 上一篇下一篇

一维碳纤维承载AgX/TiO₂(X=Br, I)三元复合材料的制备及光催化性能

梁海欧, 白杰(), 于丹丹, 张钦毓, 李春萍

内蒙古工业大学化工学院, 呼和浩特 010051

收稿日期:2016-11-29 出版日期:2017-06-10 发布日期:2017-05-19
作者简介:联系人简介: 白杰, 男, 博士, 教授, 博士生导师, 主要从事催化材料的设计、构筑及催化性能方面的研究. E-mail: baijie@imut.edu.cn
基金资助:
国家自然科学基金(批准号: 21366016)资助.

Preparation of One-dimensional CNFs Supported AgX/TiO₂(X=Br, I) Ternary Composite and Their Visible Light Photocatalytic Activity

LIANG Haiou, BAI Jie^*(), YU Dandan, ZHANG Qingyu, LI Chunping

Chemical Engineering College, Inner Mongolia University of Technology, Hohehot 010051, China

Received:2016-11-29 Online:2017-06-10 Published:2017-05-19
Contact: BAI Jie E-mail:baijie@imut.edu.cn
Supported by:
This paper is supported by the National Natural Science Foundation of China(No.21366016).

摘要/Abstract

摘要：

利用静电纺丝技术结合高温煅烧过程制备碳纤维(CNFs)载体材料, 进一步通过溶剂热和化学反应过程获得AgX/TiO₂ /CNFs(X=Br, I)复合光催化剂. 利用X射线衍射(XRD)、扫描电子显微镜(SEM)、红外光谱(FTIR)等测试手段表征了材料的结构及形貌. 通过在可见光下降解甲基橙考察了催化材料的光催化性能. 结果表明, 该复合材料具有高吸附性、良好的传导性以及较好的光敏性, 从而使其具有较好的可见光催化活性; 同时以一维碳纤维作为载体, 使其更容易分离、回收, 更具有实际应用价值.

关键词: 卤化银, 碳纤维, 静电纺丝, 光催化, 可见光

Abstract:

The aim of this study was to prepare a novel visible-light-driven photocatalysts AgX/TiO₂/CNFs(X=Br, I) composites. Carbon nanofibers(CNFs) which acted as a supporter were prepared via electrospinning technology and high-temperature calcination process. AgX-TiO₂/CNFs(X=Br, I) composites were prepared by combining solvothermal with chemical reaction process. The as-prepared composites were characterized by means of X-ray diffraction(XRD), scanning electron microscopy(SEM) and fourier transform infrared spectroscopy(FTIR). The photocatalytic activity of AgX-TiO₂/CNFs(X=Br, I) were researched for decomposition of methyl orange(MO) under visible light irradiation. The excellent performance were attributed to the synergistic effects between the high adsorption capacity, good conductivity of carbon nanofibers, and the extraordinary plasma effect of AgX(X=Br, I) nanoparticles. In addition, the as-prepared composites could be easily separated from the solution phase due to the large length-diameter ratio of CNFs.

Key words: Silver halides, CNFs, Electrospinning, Photocatalytic, Visible light

中图分类号:

O643

TrendMD:

梁海欧, 白杰, 于丹丹, 张钦毓, 李春萍. 一维碳纤维承载AgX/TiO₂(X=Br, I)三元复合材料的制备及光催化性能. 高等学校化学学报, 2017, 38(6): 947.

LIANG Haiou, BAI Jie, YU Dandan, ZHANG Qingyu, LI Chunping. Preparation of One-dimensional CNFs Supported AgX/TiO₂(X=Br, I) Ternary Composite and Their Visible Light Photocatalytic Activity. Chem. J. Chinese Universities, 2017, 38(6): 947.

图/表 6

Scheme 1 Schematic diagram of the experimental

Fig.1 SEM images of TiO2/CNFs(A) and yAgBr-TiO2/CNFs(B)—(F) y: (B) 10%; (C) 20%; (D) 30%; (E) 40%; (F) 50%.

Fig.2 SEM images of TiO2/CNFs(A) and yAgI-TiO2/CNFs(B)—(F) y: (B) 10%; (C) 20%; (D) 30%; (E) 40%; (F) 50%.

Fig.3 XRD patterns of TiO2/CNFs(a), 10%AgBr-TiO2/CNFs(b), the first recycling 10%AgBr-TiO2/CNFs(c), 10%AgI-TiO2/CNFs(d), and the first recycling 10%AgI-TiO2/CNFs(e)

Fig.4 FTIR spectra of PAN NFs(a), CNFs(b), TiO2/CNFs(c), 10%AgBr-TiO2/CNFs(d), and 10%AgI-TiO2/CNFs(e)

Fig.5 Photo degradation curves of MO over different catalysts under visible light irradiation a. CNFs; b. TiO2/CNFs; c. 10%AgBr-TiO2/CNFs; d. 20%AgBr-TiO2/CNFs; e. 30%AgBr-TiO2/CNFs;f. 40%AgBr-TiO2/CNFs; g. 50%AgBr-TiO2/CNFs.

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一维碳纤维承载AgX/TiO₂(X=Br, I)三元复合材料的制备及光催化性能

Preparation of One-dimensional CNFs Supported AgX/TiO₂(X=Br, I) Ternary Composite and Their Visible Light Photocatalytic Activity

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