Synthesis of dual-phase titanate/anatase with controllable morphology doped with nitrogen from a bola-amphiphile amine surfactant as template

Bao, Nan; He, Sui; Zhang, Qingzhe; Yin, Ze; Zhang, Yanxiang; Xu, Xin

doi:10.1016/j.ceramint.2015.01.026

Cited by 8 publications

(3 citation statements)

References 41 publications

(47 reference statements)

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“…However, TiO 2 photocatalytic activity under Vis (>400 nm) can be increased by doping [6]; and thus, numerous groups utilize transition metal ions, such as Fe, Au, Ag, V, Cr and Ni, to hinder the recombination process [1,8,9,10]. The recombination process in TiO 2 has also been suppressed by preparing polyaniline/TiO 2 (PANI/TiO 2 ) composites [11], which is a promising, though poorly investigated approach.…”

Section: Introductionmentioning

confidence: 99%

Stability and Synergistic Effect of Polyaniline/TiO2 Photocatalysts in Degradation of Azo Dye in Wastewater

et al. 2017

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The polyaniline/TiO2 (PANI/TiO2) composite photocatalysts were prepared by the in situ chemical oxidation of aniline (An) in the presence of TiO2 particles. For this purpose, photocatalysts with different amounts of PANI polymer were prepared and analysed. Fourier-transform infrared (FT-IR) spectroscopy and thermogravimetric (TG) analysis indicated successful synthesis of the PANI polymer and its conductivity was also determined. The micrographs of field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) were used to explain the impact of the aniline amount on the aggregation process during the synthesis of the composites. The smallest size of aggregates was obtained for the photocatalysts with 15% of PANI (15PANI/TiO2) due to the formation of homogenous PANI. The photocatalytic activity of studied PANI/TiO2 photocatalysts was validated by monitoring the discoloration and mineralization of Reactive Red azo dye (RR45) in wastewater. The 15PANI/TiO2 sample presented the highest photocatalytic efficiency under ultraviolet A (UVA) irradiation, in comparison to pure TiO2. This was explained by the formation of uniformly dispersed PANI on the TiO2 particles, which was responsible for the synergistic PANI-TiO2 effect.

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Section: Introductionmentioning

confidence: 99%

Stability and Synergistic Effect of Polyaniline/TiO2 Photocatalysts in Degradation of Azo Dye in Wastewater

et al. 2017

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“…The special surface areas, particle size and the bicrystalline must be considered in comparison the photocatalytic activity among these samples. 19) Compare with TiO 2 nanopaiticle under ultraviolet light reported by Wang (rate constant k = 5.99 © 10 ¹3 ), 20) the Cu/N-codoped TiO 2 display highly photocatalytic performance (rate constant k = 1.62 © 10 ¹2 ) on photooxidation of acetone under visible light.…”

Section: Characterizationmentioning

confidence: 92%

Nanocrystalline TiO<sub>2</sub> Powders Prepared by Xerogel Hydrothermal in Water: Characterization Photocatalytic Oxidation of Acetone

Liu

Zhu

2020

Mater. Trans.

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Cu/N-codoped TiO 2 was able to degrade solution under light irradiation with significantly. However, the photocatalytic activity of acetone gas-phase seldomly reported. In this research, we have developed novel method to photooxidation of acetone. The photocatalytic efficiency of different Cu/N-codoped TiO 2 powders, prepared by a novel modified hydrothermal method at different temperatures, has been evaluated through the Cu/N-codoped TiO 2 photo sensitized degradation of acetone. The as prepared samples were studied for their physicochemical property using XRD, SEM, UV-vis and N 2 sorption analysis. Results indicated that when the temperature below 220°C, Cu/N-codoped TiO 2 facilitated formation and stability of anatase and brookite phase. The sample prepared in 150°C (TiH 2 O-150) exhibited highest surface area and photoabsorption in the visible light region. The sample prepared in 150°C (TiH 2 O-150) shows highest photocatalytic activity (80.4%) with a rate constant k = 1.62 © 10 ¹2 . Cu/N-codoped TiO 2 can be considered as a promising visible light-sensitized photocatalysts for removing acetone.

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“…Porém, o octaedro TiO6 é um pouco mais distorcido. É considerada na literatura a fase mais fotoativa, por isso é amplamente estudada e utilizada em processos fotocatalíticos (Kandiel et al, 2010a;Sun et al, 2013;Bao et al, 2015). Sua maior fotorreatividade é por causa do nível de Fermi ligeiramente superior, menor capacidade de adsorção de oxigênio e grau mais elevado de hidroxilação (Gupta e Tripathi, 2011).…”

Section: (A) (B) (C)unclassified

Síntese, caracterização e avaliação da atividade fotocatalítica de TiO2 modificado com nitrogênio e prata

Silva¹

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Mariana, Samuel, Valdislaine e Werick, pela paciência e convivência agradável, Ao Prof. Dr. Antonio Otávio de Toledo Patrocínio pelo auxílio nas análises de espectroscopia de fotoelétrons excitados por raios-X (XPS), Ao CETENE, Centro de Tecnologias Estratégicas do Nordeste, pela realização das análises de Raman, área superficial e porosidade, microscopia eletrônica de transmissão (MET) e espectroscopia de energia dispersiva (EDS),

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Synthesis of dual-phase titanate/anatase with controllable morphology doped with nitrogen from a bola-amphiphile amine surfactant as template

Cited by 8 publications

References 41 publications

Stability and Synergistic Effect of Polyaniline/TiO2 Photocatalysts in Degradation of Azo Dye in Wastewater

Stability and Synergistic Effect of Polyaniline/TiO2 Photocatalysts in Degradation of Azo Dye in Wastewater

Nanocrystalline TiO<sub>2</sub> Powders Prepared by Xerogel Hydrothermal in Water: Characterization Photocatalytic Oxidation of Acetone

Síntese, caracterização e avaliação da atividade fotocatalítica de TiO2 modificado com nitrogênio e prata

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