M‐Doped TiO2 and TiO2–MxOy Mixed Oxides (M = V, Bi, W) by Reactive Mineralization of Cellulose – Evaluation of Their Photocatalytic Activity

Plumejeau, Sandrine; Rivallin, Matthieu; Brosillon, Stéphan; Ayral, A.; Boury, Bruno

doi:10.1002/ejic.201501293

Cited by 13 publications

(4 citation statements)

References 39 publications

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“…[40] We recently reported an innovative process based on the direct reaction of cellulosic biomass, such as cotton, filter paper,o rn anofibrillated cellulose, with the simplest and cheapest metal oxide precursors. [17,18,41,42] In such reactions, the biomass is not only considered as at emplate, but also as ar eagent, from which Oa toms are transferred to the metal precursors,i nf ull agreement with the green chemistry principle of economy of atoms. The dehydration of the polysaccharides is the main chemical transformationt hat occurs during the process and the resulting materials can then be converted into metal oxides by calcination or into their composites with carbon by pyrolysis.…”

Section: Introductionmentioning

confidence: 90%

“…We recently reported an innovative process based on the direct reaction of cellulosic biomass, such as cotton, filter paper, or nanofibrillated cellulose, with the simplest and cheapest metal oxide precursors . In such reactions, the biomass is not only considered as a template, but also as a reagent, from which O atoms are transferred to the metal precursors, in full agreement with the green chemistry principle of economy of atoms.…”

Section: Introductionmentioning

confidence: 91%

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Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

et al. 2019

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A new strategy for the synthesis of mesoporous TiO2@C nanocomposites through the direct mineralization of seaweed‐derived alginic acid cryogel by TiCl4 through a solid/vapor reaction pathway is presented. In this synthesis, alginic acid cryogel can have multiple roles; i) mesoporous template, ii) carbon source, and iii) oxygen source for the TiO2 precursor, TiCl4. The resulting TiO2@alginic acid composite was transformed either into pure mesoporous TiO2 by calcination or into mesoporous TiO2@C nanocomposites by pyrolysis. By comparing with a nonporous TiO2@C composite, the importance of the mesopores on the performance of electrodes for lithium‐ion batteries based on mesoporous TiO2@C composite was clearly evidenced. In addition, the carbon matrix in the mesoporous TiO2@C nanocomposite also showed electrochemical activity versus lithium ions, providing twice the capacity of pure mesoporous TiO2 or alginic acid‐derived mesoporous carbon (A600). Given the simplicity and environmental friendliness of the process, the mesoporous TiO2@C nanocomposite could satisfy the main prerequisites of green and sustainable chemistry while showing improved electrochemical performance as a negative electrode for lithium‐ion batteries.

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Section: Introductionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 91%

Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

et al. 2019

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“…Wu et al., synthesized Cu‐doped TiO 2 nanofibers by hydrothermal method. It had good photocatalytic activity and could greatly increase the rate constant of methyl orange degradation reaction . Dechakiatkrai et al., prepared Fe‐doped TiO 2 nanoparticles by sol‐gel and impregnation method.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Yb−Ag@TiO₂ Hollow Spheres for Enhancing Visible‐Light Photocatalytic Activity

Peng

Yao

et al. 2020

ChemistrySelect

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Using melamine‐formaldehyde microspheres as templates and n‐butyl titanate, silver nitrate and ytterbium nitrate hexahydrate as raw materials, the TiO2 hollow spheres (TiO2HS), which were doped with Yb and loaded with Ag, were successfully prepared by sol‐gel template method and high‐temperature calcinations and reduction. The combined action of Yb and Ag on the photocatalytic effect of methyl orange in visible light was studied. The results show that Yb3+ did not affect the reduction of Ag+ in the synthetic process, and Ag did not affect the substitution of Yb3+ for Ti4+ into the lattice of anatase phase TiO2. The introduction of Yb created impurity energy levels in the TiO2 band gap, which broadened the light absorption range and shortened the band gap width. At the same time, the Ag with strong electron conduction ability improved the carrier transfer speed. Benefitting from the combined action of Yb and Ag, the photo‐degradation efficiency of Yb−Ag@TiO2HS on methyl orange in visible light was significantly improved compared with that of undoped, Yb‐doped and Ag‐loaded TiO2HS. The degradation efficiency of Yb−Ag@TiO2HS on methyl orange was 7 times, 3 times and 4 times higher than that of TiO2HS, Yb@TiO2HS and Ag@TiO2HS, respectively.

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“…Fast recombination of photo-generated electron-hole pairs of TiO 2 reduces the photocatalytic efficiency of TiO 2 [2]. In order to reduce the band gap energy and the recombination of photo-generated electrons and holes, TiO 2 is modified by doping metals [3][4][5][6], nonmetals [6][7][8][9] or coupling semiconductors [10][11][12][13]. Specifically, non-metal doping is considered to be one of the common approaches to improving the photocatalytic performance of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Solar photocatalytic activity of nitrogen doped TiO₂ coating by micro-arc oxidation

Sridhar

Arunnellaiappan

Rameshbabu

et al. 2017

Surface Engineering

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Nitrogen doped porous TiO 2 (N-TiO 2 ) coating was developed from titanium nitride (TiN) by micro-arc oxidation (MAO), whereas TiN was prepared by plasma nitriding on commercially pure (Cp) titanium. The surface roughness of the N-TiO 2 coating was greater than that of the TiO 2 coating due to different MAO processing parameters. The band gap energy of N-TiO 2 coating was reduced to 2.92 eV compared to TiO 2 coating. The band gap energy reduction of N-TiO 2 was attributed to nitrogen doping and the mixture of anatase, rutile and new phase (TiN 0.30 ). The photoluminescence study demonstrated that the recombination rate of photo-generated electron-hole pairs of TiO 2 was significantly suppressed after doping with nitrogen. N-TiO 2 exhibited higher photocatalytic activity towards methylene blue dye degradation than to pure TiO 2 coating. The recyclability test of N-TiO 2 coating showed constant photocatalytic efficiency after the fourth run. Hence, N-TiO 2 porous coating could be a promising material for immobilised solar photocatalytic applications.

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M‐Doped TiO₂ and TiO₂–M_xO_y Mixed Oxides (M = V, Bi, W) by Reactive Mineralization of Cellulose – Evaluation of Their Photocatalytic Activity

Cited by 13 publications

References 39 publications

Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Synthesis and Characterization of Yb−Ag@TiO₂ Hollow Spheres for Enhancing Visible‐Light Photocatalytic Activity

Solar photocatalytic activity of nitrogen doped TiO₂ coating by micro-arc oxidation

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M‐Doped TiO2 and TiO2–MxOy Mixed Oxides (M = V, Bi, W) by Reactive Mineralization of Cellulose – Evaluation of Their Photocatalytic Activity

Cited by 13 publications

References 39 publications

Dehydration of Alginic Acid Cryogel by TiCl4 vapor: Direct Access to Mesoporous TiO2@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Dehydration of Alginic Acid Cryogel by TiCl4 vapor: Direct Access to Mesoporous TiO2@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Synthesis and Characterization of Yb−Ag@TiO2 Hollow Spheres for Enhancing Visible‐Light Photocatalytic Activity

Solar photocatalytic activity of nitrogen doped TiO2 coating by micro-arc oxidation

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M‐Doped TiO₂ and TiO₂–M_xO_y Mixed Oxides (M = V, Bi, W) by Reactive Mineralization of Cellulose – Evaluation of Their Photocatalytic Activity

Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Dehydration of Alginic Acid Cryogel by TiCl₄ vapor: Direct Access to Mesoporous TiO₂@C Nanocomposites and Their Performance in Lithium‐Ion Batteries

Synthesis and Characterization of Yb−Ag@TiO₂ Hollow Spheres for Enhancing Visible‐Light Photocatalytic Activity

Solar photocatalytic activity of nitrogen doped TiO₂ coating by micro-arc oxidation