Preparation of nanostructured TiO2 films with high catalytic activity and their 3D spatial distribution of anatase and rutile phases

Colomer, M.T.; Campo, Adolfo del

doi:10.1007/s10853-019-03550-4

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…In contrast, C‐S0.2, TC‐S0.5, and TC‐S0.8 exhibited Type IV adsorption isotherm curves, corresponding to typical mesoporous materials. The TC‐S0 catalyst has a low S BET value of 8.2 m 2 g −1 , which may be attributed to the main crystal phase of rutile TiO 2 with a low surface area 20. With Ti partly replaced by Sr, the S BET value reached 16.1 m 2 g −1 in TC‐S0.2 but declined with more Sr in TC‐S0.5 and TC‐S0.8.…”

Section: Resultsmentioning

confidence: 98%

Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Liu

Huang

et al. 2021

Chem Eng & Technol

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Autothermal reforming (ATR) of acetic acid (HOAc) is a promising and alternative route for hydrogen production from renewable resources, but catalyst deactivation caused by cobalt metal sintering and coking is a major concern in ATR. In this work, perovskite‐like catalysts of the formula SrxTi1–xCoO3±δ (x = 0, 0.2, 0.5, and 0.8) were prepared by evaporation‐induced self‐assembly and then evaluated in ATR for hydrogen production. The SrxTi1–xCoO3±δ catalysts exhibited high activity and stability as well as 100 % conversion of HOAc. Additionally, the Co particles with strong metal‐support interaction of SrTi(Co)O3 inhibited coking and agglomeration, and showed potential for hydrogen production by the ATR process.

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Section: Resultsmentioning

confidence: 98%

Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Liu

Huang

et al. 2021

Chem Eng & Technol

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“…The X‐ray diffraction profile is shown in Figure 5. The 2θ reflections corresponding to 23.68°, 32.27°, 35.06°, 40.00°, 48.30°, 52.50°, and 61.00° suggested TiMnO 3 perovskite phase, whereas 2θ reflections of 27.61°, 36.24°, 39.38°, 41.45°, 44.25°, 54.48°, 56.82°, 62.72°, 64.22°, and 69.17° corresponded to TiO 2 ‐rutile phase 72 as per the International Center for Diffraction Data. Further analysis of X‐ray diffraction pattern revealed (Mn, Ti)‐oxide as a mixed phase composition containing TiO 2 ‐rutile and TiMnO 3 ‐perovskite phases in the amount of 47.3 wt% and 52.7 wt%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The X-ray diffraction profile is shown in Figure 5. 72 as per the International Center for Diffraction Data. Further analysis of X-ray diffraction pattern revealed (Mn, Ti)oxide as a mixed phase composition containing TiO 2 -rutile and TiMnO 3 -perovskite phases in the amount of 47.3 wt% and 52.7 wt%, respectively.…”

Section: Xrd Analysis Of (Mn Ti-)oxide Materialsmentioning

confidence: 99%

Catalytic HTL ‐derived biochar and sol‐gel synthesized (Mn, Ti)‐oxides for asymmetric supercapacitors

Amar

Houck

Shende

2020

Intl J of Energy Research

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In this study, hydrothermal liquefaction (HTL)-derived biochar is investigated as electrode material with sol-gel-derived (Mn, Ti)-oxide electrode for asymmetric supercapacitor. To generate biochar, pinewood flour was used as an example biomass feedstock for HTL, which was carried out at 300 C and 1500 psi for 1 hour in the absence and presence of the Ni-nitrate (Ni [NO 3 ] 2 .6H 2 O) catalyst. After HTL, different products were analyzed by TOC analyzer, HPLC, and GCMS, and mass yield/carbon balance was determined. Solid residue recovered after HTL or catalytic HTL (CHTL) was thermally treated at 400 C for 2 hours to obtain biochar, which was characterized using BET surface area analyzer and SEM/EDX, and utilized as one of the electrodes. To fabricate asymmetric supercapacitor (ASC), (Mn,Ti)-oxide electrode material was synthesized using sol-gel technique with Mn:Ti precursor ratio of 30:70 wt%. As-synthesized gels were aged, dried, and calcined with a 2-step heating process (step-1: heating to 500 C and cooling to 50 C, and step-2: heating to 1000 C with soak time of 2 hours and cooling to 50 C), which were characterized by powdered X-ray diffraction and BET analysis. Asymmetric supercapacitors were fabricated with HTL/CHTL derived biochar/(Mn,Ti)oxide electrodes and KOH electrolyte, and tested with cyclic voltammetry to determine specific capacitance. ASC fabricated with CHTL-derived biochar electrode showed a higher specific capacitance of 187 F/g.

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“…The transformation process was too fast to attach uniformly to the TiO 2 surface resulting in stacking, and TCN got heavily agglomerated with the further rise in calcination temperature. Moreover, a suitable ratio of TiO 2 rutile phases and anatase phases is a vital contribution to promoting photocatalytic degradation efficiency [ 40 , 41 , 48 ]. On the whole, the calcination temperature has the greatest influence on the photocatalytic activity of aniline aerofloat degradation, followed by the doping ratio, heat preservation hour and heating rate have the least influence in a certain range.…”

Section: Resultsmentioning

confidence: 99%

Facile Synthesis with TiO2 Xerogel and Urea Enhanced Aniline Aerofloat Degradation Performance of Direct Z-Scheme Heterojunction TiO2/g-C3N4 Composite

Zhu

Chen²,

Wang

et al. 2022

Materials

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Different TiO2/g-C3N4 (TCN) composites were synthesized by a simple pyrolysis method with TiO2 xerogel and urea. The structure and physicochemical properties of TCN were characterized by X-ray diffraction, scanning electron microscope, transmission electron microscope, ultraviolet-visible diffuse reflectance spectrum, X-ray photoelectron spectroscopy, N2-adsorption isotherms and electrochemical impedance spectroscopy. Aniline Aerofloat was chosen as a typical degradation-resistant contaminant to investigate the photodegradation activity of TCN under UV irradiation. The results indicated that TCN had higher light absorption intensity, larger specific surface area and smaller particle size compared to pure TiO2. Furthermore, TCN had great recycling photocatalytic stability for the photodegradation of Aniline Aerofloat. The photocatalytic activity depends on the synergistic reaction between holes (h+) and hydroxyl radicals (·OH). Meanwhile, the direct Z-scheme heterojunction structure of TiO2 and g-C3N4 postpones the recombination of h+ and electrons to enhance UV-light photocatalytic activity.

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Preparation of nanostructured TiO2 films with high catalytic activity and their 3D spatial distribution of anatase and rutile phases

Cited by 7 publications

References 44 publications

Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Catalytic HTL ‐derived biochar and sol‐gel synthesized (Mn, Ti)‐oxides for asymmetric supercapacitors

Facile Synthesis with TiO2 Xerogel and Urea Enhanced Aniline Aerofloat Degradation Performance of Direct Z-Scheme Heterojunction TiO2/g-C3N4 Composite

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Preparation of nanostructured TiO2 films with high catalytic activity and their 3D spatial distribution of anatase and rutile phases

Cited by 7 publications

References 44 publications

SrxTi1–xCoO3±δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

SrxTi1–xCoO3±δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Catalytic HTL ‐derived biochar and sol‐gel synthesized (Mn, Ti)‐oxides for asymmetric supercapacitors

Facile Synthesis with TiO2 Xerogel and Urea Enhanced Aniline Aerofloat Degradation Performance of Direct Z-Scheme Heterojunction TiO2/g-C3N4 Composite

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Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production

Sr_xTi_1–xCoO_3±_δ Perovskite‐like Catalysts with Enhanced Activity for Hydrogen Production