Preparation and characterization of BiOCl/TiO2/MMTcomposite materials

• Autorzy: Tuo Biyang , Shi Xiulong , Tian Jinwang , Wang Jianli

Identyfikatory

DOI

10.2478/msp-2023-0025

• Języki publikacji: EN

Abstrakty

EN

To broaden the light response range of TiO₂ and improve its photocatalytic activity, BiOCl/ TiO₂ /MMT composite materials(BTMC) with outstanding photocatalytic performance were prepared by the sol-gel method with montmorillonite (MMT) asthe supporting material, tetrabutyl titanate as titanium source and, bismuth nitrate pentahydrate as the bismuth source. Theproperties of the prepared materials were characterized by X-ray diffractometer (XRD), surface and porosity analysis (BET),scanning electron microscopy–energy-dispersive X-ray spectroscopy (SEM-EDS), transmission electron microscopy (TEM),X-ray photoelectron spectrometry (XPS), and ultraviolet-visible diffuse reflection spectroscopy (UV-Vis DRS). When the Bi/Timolar ratio was 20%, the composite material exhibited a slit mesoporous structure, and its specific surface area was 109.02m2/g, with optimum photocatalytic activity. TiO₂ and BiOCl formed the type-II heterojunction on the surface of MMT, whichfacilitates the transfer of photogenerated electrons and holes, thus enhancing the photocatalytic activity of BTMC-20. Theresults of this study indicated that BTMC-20 is a promising photocatalytic composite material and has better photocatalyticproperties under visible light.

Słowa kluczowe

EN

MMT; TiO2; BiOCl; composite material; photocatalytic activity

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2023
• Tom: Vol. 41, No. 2
• Strony: 354--367
• Opis fizyczny: Bibliogr. 45 poz., rys., tab.

Twórcy

autor

Tuo Biyang

• College of Mining, Guizhou University, Guiyang 550025, China
• National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025, China

autor

Shi Xiulong

• College of Mining, Guizhou University, Guiyang 550025, China
• National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025, China

autor

Tian Jinwang

• College of Mining, Guizhou University, Guiyang 550025, China
• National & Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025, China

autor

Wang Jianli

• College of Materials and Advanced Manufacturing, Hunan University of Technology, Zhuzhou 412000, China

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