موقعك الحالي:صفحة رئيسية>المنتجات
2022年8月1日 In this present study, anatase and rutile mixed phase TiO2 nanoparticles have been prepared by an eco-friendly simple solution combustion method in a single step.
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2022年12月1日 Herein, we present a simple synthesis method to fabricate surface-amorphized anatase/rutile mixed-phase truncated octahedral TiO2 (TO-AR) structures with oxygen
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2014年12月10日 Here, we report a novel preparation method for crystalline, thermally stable (up to 800 °C) TiO 2 materials with tunable anatase/rutile
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2010年12月8日 The present work reviews the anatase to rutile phase transformation. The synthesis and properties of anatase and rutile are examined, followed by a discussion of the
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2016年3月3日 Blue Ti 3+ self-doped TiO 2 nanoparticles with mixed phases of anatase and rutile have been synthesized via a facile solvothermal method. The phase evolution of the blue TiO 2 varying from anatase to rutile has been
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2013年7月7日 We demonstrate, through a combination of state-of-the-art materials simulation techniques and X-ray photoemission experiments, that a type-II, staggered, band alignment of ~ 0.4 eV exists between...
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2019年8月19日 Compared to the commercial Degussa P25-TiO 2, the mixed-phase TiO 2 nanocomposites show better photocatalytic activity, which can be attributed to the optimal anatase to rutile ratio and the specific exposed crystal
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2010年8月13日 Herein we report a novel method to synthesize anatase-dominated anatase/rutile mixed-phase TiO 2 nanotubes via liquid phase deposition and subsequent
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2016年8月31日 In this paper, we introduce a process to synthesize a novel photocatalyst called rutile-mixed anatase nanosheets with dominant {001} facets from a hydrothermal route by using a solution mixed with Ti (OC4H9)4, HF,
Read More2009年1月18日 A group of nano-TiO2 film catalysts with rutile/anatase mixed crystal structures were prepared by a magnetron sputtering method. The photodegradation of phenol was employed to evaluate the photocatalytic activities of the filmcatalysts.With less rutile content in the catalysts, photocatalytic activities improved gradually.
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2013年7月7日 A convincing explanation of why mixed phases of anatase and rutile TiO2 outperform individual polymorphs is lacking. An energetic band alignment of ~0.4 eV is now shown to exist between the two ...
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2022年11月1日 Firstly, TiO 2 in C–TiO 2 (550) is composed of a mixed crystal composed of rutile TiO 2 and anatase TiO 2 and exists a heterostructure itself. An appropriate ratio of anatase TiO 2 to rutile TiO 2 displays the function of separating electrons and holes, which played a key role in the catalytic process [8, 9].
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2020年1月15日 Optimum rutile/anatase ratio in mixed-phase TiO 2 for the photocatalytic performance cannot be determined unambiguously. In this work, photocatalytic performance was enhanced to reach an optimum heating
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2018年2月1日 Interestingly, although P25 has been widely employed, controversy remains regarding the microstructure of P25. As widely revealed by XRD analysis, P25 is of mixed-phase TiO 2 mainly containing anatase and rutile, the two most common crystal phases of TiO 2.However, attempts made to understand the exact state of anatase and rutile phases, as
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2024年8月29日 The construction of anatase/rutile heterojunctions in TiO2 is an effective way of improving the CO2 photoreduction activity. Yet, the origin of the superior photocatalytic performance is still unclear. To solve this issue, the
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2020年1月1日 In this paper, Ti 3+ self-doped rutile/anatase/TiO 2 (B) mixed-crystal tri-phase heterojunction photocatalyst was successfully synthesized by a mild hydrothermal, a facile mechanochemistry method and followed by an in situ controllable solid-state reaction approach. The prepared photocatalysts with a narrow band gap and tri-phase heterojunctions, extended
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Compared to anatase/rutile, mixed-phase titania containing brookite has received less attention . Table 4 summarizes a few studies on the preparation of mixed-phase TiO 2 nanostructures with a tuned ratio of brookite in the titania mixtures.
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Abstract: A group of nano-TiO2 film catalysts with rutile/anatase mixed crystal structures were prepared by a magnetron sputtering method. The photodegradation of phenol was employed to evaluate the photocatalytic
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2021年10月15日 X-ray diffraction and Raman spectroscopy confirmed the rutile–anatase mixed-phase TiO 2 photocatalysts. The role of Ag doping was also investigated in the phase transformation of mixed-phase TiO 2 nanoparticles. Further, the effect of mixed-phase and Ag doping on photocatalytic activity was also investigated.
Read More2014年6月25日 We present a step-by-step theoretical protocol based on the first-principles methods to reveal the insight into the origin of the high photocatalytic activity achieved by the mixed-phase TiO2, consisting of anatase and rutile. The interfacial geometries, density of states, charge densities, optical absorption spectrum, electrostatic potential, and band offsets have
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2020年10月1日 It is found that the rutile percentage is only 12.48% in T2, while it is 89.65% in T5. The sample T3 contains 82% anatase and 18% rutile. The percentages of anatase and rutile are nearly comparable to the 80:20 ratio of anatase/rutile in Degussa P25, a commercial mixed anatase-rutile TiO 2 nanopowder reported to show high photoactivity [14].
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2022年11月1日 TiO 2 has many polymorphs, among which rutile is the most thermodynamically stable. Bulk anatase TiO 2 is usually a metastable phase at room temperature. Hence, phase transformation of bulk rutile TiO 2 to anatase TiO 2 by heat treatment is thermodynamically forbidden. However, the stability of TiO 2 polymorphs is dependent on particle size and doping
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2025年1月3日 As a semiconductor material with inorganic functional properties, titanium dioxide (TiO 2) demonstrates exceptional optical, electrical, and catalytic characteristics.The catalytic performance of TiO 2 is notably affected by the proportion of anatase to rutile within its mixed phase, which plays a crucial role in modulating its performance. The phase transition in TiO 2
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2015年7月14日 An intriguing synergistic phenomenon for TiO 2 is that the mixed-phase TiO 2 of anatase and rutile exhibits higher photocatalytic activity than their pristine compositions. Although not fully ...
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2014年2月1日 In this article we have reported the optical properties of defective anatase, anatase–rutile mixed phase and of rutile phase of TiO 2 nanoparticles. TiO 2 has immense applications in photocatalysis but to be an efficient photocatalytic material it should have absorption in the visible region as well as large number of available free carriers. We have
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Controlled TiCl 4 hydrolysis was used to synthesize titanium dioxide nanoparticles in crystalline forms of anatase, rutile, and a biphasic mix of rutile and anatase. The results indicated that an ...
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2009年6月15日 A group of nano-TiO2 film catalysts with rutile/anatase mixed crystal structures were prepared by a magnetron sputtering method. The photodegradation of phenol was employed to evaluate the ...
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2007年10月1日 The present study is an extension of our previous work on the PCO of propane on anatase [7].We provide detailed spectroscopic data of surface intermediates by in situ FTIR and correlate this to both online mass spectrometry data acquired simultaneously and to the surface structure of the different TiO 2 polymorphs, including mixed-phase TiO 2 containing
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2022年1月1日 This work reports a novel and simple method for the synthesis of mixed phase TiO 2 (Anatase 70% and Rutile 30%). Refluxing aqueous solution of potassium titanyl oxide oxalate lead to direct crystallization of titanium oxalate complex [Ti 2 O 3 (H 2 O) 2 (C 2 O 4).3H 2 O] and this complex on calcination at 450 ˚C for one hour yielded TiO 2 powder. The powder
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الصين -تشنغ تشو -المنطقة الوطنية للتنمية الصناعية للتكنولوجيا المتطورة، جادة العلوم رقم 169.
