Preparation and characterization of BiOCl/TiO2/MMT composite 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) as the supporting material, tetrabutyl titanate as titanium source and, bismuth nitrate pentahydrate as the bismuth source. The properties 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/Ti molar ratio was 20%, the composite material exhibited a slit mesoporous structure, and its specific surface area was 109.02 m²/g, with optimum photocatalytic activity. TiO₂ and BiOCl formed the type-II heterojunction on the surface of MMT, which facilitates the transfer of photogenerated electrons and holes, thus enhancing the photocatalytic activity of BTMC-20. The results of this study indicated that BTMC-20 is a promising photocatalytic composite material and has better photocatalytic properties under visible light.

Słowa kluczowe

EN

MMT; montmorillonite; 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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