Synthesis of W-Doped TiO2 Material Ratio Using One-Step Solvothermal Method and Treatment Orientation of Volatile Organic Compounds

Hung Dung Chau; Tran Thi Tuu; Phung Chi Sy; Lam Van Tan; Thi Kim Ngan Tran

doi:10.9767/bcrec.18198

DOI: https://doi.org/10.9767/bcrec.18198

Synthesis of W-Doped TiO2 Material Ratio Using One-Step Solvothermal Method and Treatment Orientation of Volatile Organic Compounds

Hung Dung Chau^{1, 2}

, Tran Thi Tuu^{1, 2}, Phung Chi Sy²

, Lam Van Tan^{1, 2}

, Thi Kim Ngan Tran^{1, 2}

¹Institute of Applied Technology and Sustainable Development, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam

²Faculty of Food and Environmental Engineering, Nguyen Tat Thanh University, Ho Chi Minh City 700000, Viet Nam

Received: 17 May 2023; Revised: 10 Nov 2023; Accepted: 11 Nov 2023; Available online: 14 Nov 2023; Published: 11 Dec 2023.

Editor(s): Istadi Istadi

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

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BibTex Citation Data :

@article{BCREC18198,
    author = {Hung Dung Chau and Tran Thi Tuu and Phung Chi Sy and Lam Van Tan and Thi Kim Ngan Tran},
    title = {Synthesis of W-Doped TiO2 Material Ratio Using One-Step Solvothermal Method and Treatment Orientation of Volatile Organic Compounds},
    journal = {Bulletin of Chemical Reaction Engineering & Catalysis},
  volume = {18},
    number = {4},
    year = {2023},
    keywords = {Volatile Organic Compounds; VOC; W-doped TiO2; solvothermal; formaldehyde},
    abstract = { In TiO 2  photocatalysts have been interested in the world thanks to many advantages in handling toxic compounds, with great potential for practical application at low cost. However, the electron-hole recombination rate is still high and can not be processed under visible light, which is a major limitation of this material. Modification of TiO 2  by W 6+  is a possible solution, however there is still little research and the optimal W 6+  ratio in small amounts is still low. The material was synthesized by a one-stage solvothermal method at 200 ºC for 10 hours, without using any surfactants or post-reaction calcination with doped W molar ratios of 0.5%, 1%, and 1.5%. The result was that the TiW-1.5% catalyst sample had the highest specific surface area of 175 m 2 /g, higher than pure TiO 2  of 160.0 m 2 /g. The W 6+  ion successfully replaced Ti 4+  in the TiO 2  crystal lattice, reducing the band gap energy of the catalytic sample to 2.88 eV with the TiW-1.5% sample. For TiW-0%, the formaldehyde decomposition ability is 53.50%. Doping W into TiO 2  increased catalytic efficiency, with a material sample with an optimal modified W content of 1.5% mol W having a formaldehyde decomposition efficiency of 71.98%. Research results show that W modification can improve the activity of TiO 2  and increase the efficiency of volatile organic compound treatment. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License ( https://creativecommons.org/licenses/by-sa/4.0 ).    },
   issn = {1978-2993},   pages = {640--647}  doi = {10.9767/bcrec.18198},
    url = {https://journal.bcrec.id/index.php/bcrec/article/view/18198}
}

Citation Format:

Abstract

In TiO₂ photocatalysts have been interested in the world thanks to many advantages in handling toxic compounds, with great potential for practical application at low cost. However, the electron-hole recombination rate is still high and can not be processed under visible light, which is a major limitation of this material. Modification of TiO₂ by W⁶⁺ is a possible solution, however there is still little research and the optimal W⁶⁺ ratio in small amounts is still low. The material was synthesized by a one-stage solvothermal method at 200 ºC for 10 hours, without using any surfactants or post-reaction calcination with doped W molar ratios of 0.5%, 1%, and 1.5%. The result was that the TiW-1.5% catalyst sample had the highest specific surface area of 175 m²/g, higher than pure TiO₂ of 160.0 m²/g. The W⁶⁺ ion successfully replaced Ti⁴⁺ in the TiO₂ crystal lattice, reducing the band gap energy of the catalytic sample to 2.88 eV with the TiW-1.5% sample. For TiW-0%, the formaldehyde decomposition ability is 53.50%. Doping W into TiO₂ increased catalytic efficiency, with a material sample with an optimal modified W content of 1.5% mol W having a formaldehyde decomposition efficiency of 71.98%. Research results show that W modification can improve the activity of TiO₂ and increase the efficiency of volatile organic compound treatment. Copyright © 2023 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Keywords: Volatile Organic Compounds; VOC; W-doped TiO2; solvothermal; formaldehyde

Funding: Nguyen Tat Thanh University

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Section: Original Research Articles

Language : EN

In 2023: BCREC Volume 18 Issue 4 Year 2023 (December 2023)

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