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Solvothermal-assisted Sol–Gel method Synthesized Amorphous Mesoporous Titania for Efficient Adsorption of Sb(III) in Aqueous Solution

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Abstract

Amorphous mesoporous titania (AM-TiO2) was prepared through the solvothermal-assisted sol–gel method. AM-TiO2 exhibited a large specific surface area (675 m2/g) and a high adsorption capacity (252.7 ± 5.6 mg/g) for the removal of Sb(III) from aqueous solution, which was beyond the majority of previously reported Sb(III) adsorbent. The isotherms and kinetics studies indicated that the adsorption followed the Langmuir isotherm model and pseudo-second-order kinetics equation. Choosing N, N-dimethylformamide (DMF) as the solvent, as-synthesized AM-TiO2 exhibited a remarkably enhanced adsorption capacity of Sb(III) compared with other solvents including acetone (209.6 mg/g), methyl alcohol (195.5 mg/g), ethyl alcohol (180.5 mg/g), and water (106.7 mg/g). Furthermore, the background ionic such as CO32−, Cl, SO42−, and NO3 had a negligible impact on the adsorption properties of AM-TiO2. The synergy among negative surface charge, large specific surface area, and abundant hydroxyl groups facilitates the adsorption of Sb(III). AM-TiO2 was further utilized to the removal of Sb(III) in real polluted textile wastewater; meanwhile, Mn and chemical oxygen demand (COD) in the textile wastewater were simultaneously reduced as well.

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The datasets supporting the conclusions of this article are included within the article and its supplementary information files.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (22062026), the Industrialization Cultivation Project (2016CYH04), the Yunling Scholar (K264202012420),  the Kunming Science and Technology Project (2019-1-N-25318000002603), and the Key Laboratory of Advanced Materials for Wastewater Treatment of Kunming. The authors thank the Advanced Analysis and Measurement Center of Yunnan University for the sample testing service.

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Contributions

Yepeng Yang, Liang Jiang, and Jiaqiang Wang conceived and designed the experiments. Mi Li, Qinyuan Tang, and Peiwen Xu performed the experiments. Daomei Chen, Jiao He, and Yongjuan Chen analyzed the data. Yepeng Yang, Liang Jiang, and Jiaqiang Wang analyzed the data and contributed to writing the manuscript. All authors provided critical feedback and helped shape the research, analysis, and manuscript.

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Correspondence to Liang Jiang or Jiaqiang Wang.

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Highlights

• Amorphous mesoporous titania (AM-TiO2) was prepared through the solvothermal-assisted sol–gel method.

• AM-TiO2 synthesized by using DMF as solvent showed highly efficient adsorption activity for Sb(III).

• AM-TiO2 could simultaneously remove Sb, Mn, and chemical oxygen demand in actual industrial textile wastewater.

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Yang, Y., Jiang, L., Tang, Q. et al. Solvothermal-assisted Sol–Gel method Synthesized Amorphous Mesoporous Titania for Efficient Adsorption of Sb(III) in Aqueous Solution. Water Air Soil Pollut 233, 61 (2022). https://doi.org/10.1007/s11270-022-05526-8

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  • DOI: https://doi.org/10.1007/s11270-022-05526-8

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