Synthesis of CoTiO 3 nanoparticles with enhanced photocatalytic degradation

Micro & nano letters

article

Danfeng Cui¹  Yanfang Li¹  Yi Chen¹  Yuankai Li¹  Zhenyin Hai²  Hongyan Xu³  Chenyang Xue¹ 

[1] Key Laboratory of Instrumentation Science & Dynamic Measurement of Ministry of Education, North University of China;Department of Applied Analytical & Physical Chemistry, Ghent University Global Campus, Incheon;School of Materials Science and Engineering, North University of China

关键词: visible spectra;    surface recombination;    surface morphology;    catalysis;    nanoparticles;    photochemistry;    scanning electron microscopy;    ultraviolet spectra;    nanofabrication;    X-ray diffraction;    transmission electron microscopy;    titanium compounds;    X-ray photoelectron spectra;    nanocomposites;    Fourier transform infrared spectra;    enhanced photocatalytic degradation;    simple cost hydrothermal method;    MB;    magnetic mass;    surface morphology;    optical characteristics;    scanning electron microscopy;    transmission electron microscopy;    X-ray diffraction;    X-ray photoelectron spectroscopy;    ultraviolet–visible absorption measurements;    degradation percentage;    enhanced photocatalytic activities;    specific surface area;    surface recombination;    photo-generated charge carriers;    degradation rate;    photocatalytic behaviour;    magnetic behaviour;    methylene blue degradation;    Fourier transform infrared spectroscopy;    mesoporous cobalt titanium oxide nanoparticles;    methylene blue decolourisation;    nanocomposites;    water purification;    environmental remediation;    time 90.0 min;    CoTiO3;   

DOI  :  10.1049/mnl.2018.5025

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

The mesoporous CoTiO 3 nanoparticles, which have been successfully prepared by a fast, simple and low-cost hydrothermal method, show good decolourisation and degradation of methylene blue (MB). The synthesised samples can be recovered easily from solution by a magnetic mass. Surface morphology, structure, composition, and optical characteristics of the prepared CoTiO 3 were determined using scanning electron microscopy, transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and ultraviolet–visible absorption measurements. The degradation percentage of MB was nearly 95% at an initial concentration of 10 ppm in 90 min. Such enhanced photocatalytic activities of synthesised CoTiO 3 were attributed to a large specific surface area (54.22 m 2 g −1 ) and defects density, which was useful for restraining surface recombination of photo-generated charge carriers. The recovery of CoTiO 3 nanoparticles was about 85% and the degradation rate of MB remained 80% after five cycles. As a whole, the CoTiO 3 nanocomposites give a synergistic effect in photocatalytic and magnetic behaviour and indicate that the synthesised samples have a promising potential particularly for water purification and environmental remediation.

【 授权许可】

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