Microwave-assisted Synthesis of Functionalized Multiwalled Carbon Nanotube–Titanium Dioxide Hybrid Structure and Photodegradation

IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of Engineering and Technological Sciences Pub Date : 2022-07-18 DOI:10.5614/j.eng.technol.sci.2022.54.4.7

Y. Irmawati, Shofia Manzalini, B. Sugeng, S. Sudirman, Harayasu Asahara, R. Yudianti

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引用次数: 1

Abstract

Decoration of a functionalized multiwalled carbon nanotube (f-MWCNT) surface with titanium dioxide (TiO2) was designed to improve its photocatalytic degradation performance. Structural decoration was achieved by microwave heating at various mass ratios (1:2; 1:4; 1:8; 1:16 wt.%) of titanium (IV) isopropoxide as precursor. The hybrid structure of TiO2/f-MWCNT was characterized by scanning electron microscope and transmission electron microscope (TEM). The crystallite form of the TiO2 nanoparticles was further studied by X-ray diffraction (XRD) and HR–TEM. We report the conformation of high-density TiO2 coated on an f-MWCNT surface at a mass ratio of 1:16 wt.%. XRD analysis revealed a structural transformation from mixture phase (anatase–brookite) at mass ratios of 1:2 and 1:4 wt.% to fully anatase phase for mass ratios of 1:8 and 1:16 wt.%. The transformation was also confirmed by selected area electron diffraction (SAED) and HR–TEM analysis. Our results showed that anatase phase plays a significant role in photodegradation activity.

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微波辅助合成功能化多壁碳纳米管-二氧化钛杂化结构及其光降解

设计了用二氧化钛（TiO2）修饰功能化多壁碳纳米管（f-MWCNT）表面，以提高其光催化降解性能。通过在不同质量比（1:2；1:4；1:8；1:16wt%）的异丙氧基钛（IV）作为前体的微波加热来实现结构装饰。用扫描电子显微镜和透射电子显微镜对TiO2/f-MWCNT的杂化结构进行了表征。通过X射线衍射（XRD）和HR–TEM进一步研究了TiO2纳米颗粒的微晶形式。我们报道了以1:16 wt.%的质量比涂覆在f-MWCNT表面上的高密度TiO2的构象。XRD分析显示，从质量比为1:2和1:4 wt.%时的混合相（锐钛矿-板钛矿）到质量比为1:8和1:16 wt.%时的完全锐钛矿相的结构转变。选区电子衍射（SAED）和HR–TEM分析也证实了这种转变。结果表明，锐钛矿相在光降解活性中起着重要作用。

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来源期刊

Journal of Engineering and Technological Sciences ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

24 weeks

期刊介绍： Journal of Engineering and Technological Sciences welcomes full research articles in the area of Engineering Sciences from the following subject areas: Aerospace Engineering, Biotechnology, Chemical Engineering, Civil Engineering, Electrical Engineering, Engineering Physics, Environmental Engineering, Industrial Engineering, Information Engineering, Mechanical Engineering, Material Science and Engineering, Manufacturing Processes, Microelectronics, Mining Engineering, Petroleum Engineering, and other application of physical, biological, chemical and mathematical sciences in engineering. Authors are invited to submit articles that have not been published previously and are not under consideration elsewhere.