Biotemplate preparation of Bi 2 O 3 nanosheet for enhanced photodegradation of methylene blue

Micro & nano letters

article

Jing Yang¹  Meiyan Wang¹  Susu Zhao²  Yangyang Liu²  Wei Zhang²  Bowen Wu²  Qing Liu² 

[1] State Key Laboratory of Mining Disaster Prevention and Control Co-founded by Shandong Province and the Ministry of Science and Technology, Shandong University of Science and Technology;College of Chemical and Environmental Engineering, Shandong University of Science and Technology

关键词: photodissociation;    energy gap;    photochemistry;    nanofabrication;    transmission electron microscopy;    visible spectra;    adsorption;    differential scanning calorimetry;    thermal analysis;    nanostructured materials;    ultraviolet spectra;    X-ray diffraction;    scanning electron microscopy;    Fourier transform infrared spectra;    bismuth compounds;    dyes;    replica techniques;    petal template;    methylene blue;    biotemplate preparation;    Fourier-transform infrared spectroscopy;    nitrogen adsorption;    X-ray diffraction;    transmission electron microscopy;    ultraviolet–visible diffuse reflectance spectroscopy;    pure monoclinic phase;    photodegradation;    xenon lamp irradiation;    thermogravimetric analysis–differential scanning calorimetric analysis;    Bi2O3 nanosheet;    China rose petal;    scanning electron microscopy;    specific surface area;    wavelength 480.0 nm;    time 180.0 min;    Bi2O3;   

DOI  :  10.1049/mnl.2018.5706

学科分类：计算机科学（综合）

来源: Wiley

【 摘 要 】

Bi 2 O 3 nanosheet was synthesised using China rose petal as a biotemplate for the photodegradation of methylene blue under xenon lamp irradiation. The samples were characterised by thermogravimetric analysis–differential scanning calorimetric analysis, Fourier-transform infrared spectroscopy, nitrogen adsorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and ultraviolet–visible diffuse reflectance spectroscopy. The results revealed that the Bi 2 O 3 nanosheet with pure monoclinic phase was successfully synthesised by replication of the petal template with a thickness of about 100 nm, and showed the absorption thresholds wavelength of 480 nm. Moreover, the Bi 2 O 3 nanosheet exhibited 94.84% degradation efficiency of photodegradation of methylene blue in 180 min, which was much more active than that of the commercial α-Bi 2 O 3 due to its high specific surface area of 45.7 m 2 g −1 and wide band gap of 3.10 eV.

【 授权许可】

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