Highly adsorptive removal of Congo red from aqueous solution using TiO2 doped with Fe3+ nanoparticles

Nga, Nguyen Kim; Nga, Nguyễn Thị

doi:10.1007/s00396-023-05084-3

Colloid Polym Sci

2023

DOI: 10.1007/s00396-023-05084-3

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Highly adsorptive removal of Congo red from aqueous solution using TiO2 doped with Fe3+ nanoparticles

Nguyen Kim Nga

Nguyễn Thị Nga

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2024

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Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red

Nga,

Mai

2024

Vietnam Journal of Chemistry

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TiO2 nanoparticles (NPs) doped with Ag were produced through a solvothermal method, with varying amounts of silver doping ranging from 0.5% to 1.5%. The samples were analyzed for crystallite sizes, structure, and metallic bondings using XRD, SEM, EDXS, and FTIR techniques. The BET surface areas were determined through nitrogen adsorption isotherms. The efficiency of the silver‐doped TiO2 NPs for removing Congo red (CR) was tested through adsorption experiments. The results showed that the synthesized TiO2 NPs doped with Ag were uniformly spherical in shape, with tiny average sizes ranging from 7.97 to 12.74 nm and large BET surface areas (98.41–166.1 m2 g−1). The silver‐doped TiO2 samples with a 0.5% Ag doping amount exhibited the highest adsorption capacity in CR removal, with a maximum adsorption capacity of 454.55 mg of dye per gram of adsorbent and a lower contact time of 20 min than other metal oxide NPs. The CR adsorption onto 0.5% Ag‐TiO2 obeyed the Langmuir isotherm model (R2 = 0.989), and the adsorption followed a pseudo‐second‐order kinetic equation. The adsorbent could be efficiently reused for five consecutive cycles to remove CR.

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Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red

Nga,

Mai

2024

Vietnam Journal of Chemistry

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Highly adsorptive removal of Congo red from aqueous solution using TiO2 doped with Fe3+ nanoparticles

Cited by 1 publication

References 43 publications

Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red

Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red

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Highly adsorptive removal of Congo red from aqueous solution using TiO2 doped with Fe3+ nanoparticles

Cited by 1 publication

References 43 publications

Synthesis of silver‐doped TiO2 nanoparticles with highly efficient adsorption of Congo red

Synthesis of silver‐doped TiO2 nanoparticles with highly efficient adsorption of Congo red

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Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red

Synthesis of silver‐doped TiO₂ nanoparticles with highly efficient adsorption of Congo red