The effect of calcination temperature on the crystallinity of TiO2 nanopowders

Chen, Yung‐Fang; Lee, Chi Young; Yeng, Ming Yu; Chiu, Hsin‐Tien

doi:10.1016/s0022-0248(02)01938-3

Cited by 261 publications

(153 citation statements)

References 15 publications

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“…The sharp peak shows that SiO2 has a very high crystallinity [14]. This also corresponds to the research of [15] who reported that the crystallinity of a material is influenced by the temperature of calcination in the synthesis process. Based on the structure characterization by FTIR and XRD it provides evidence that the synthesized silica by sol gel method succeeded in producing SiO2.…”

Section: Characterization Of Silica From Petung Bamboo Ash Leavessupporting

confidence: 79%

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Udaibah

Priyanto

2017

J. Nat. Scien. & Math. Res.

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<p style="text-align: justify;">The Research about Synthesis and Characterization of SiO2 have been worked. We have synthesized Silica from “petung”bamboo leaf ash as SiO2 source. This step used sol gel methode. SiO2 were characterized by Fourier Transform Infra Red (FTIR) to investigated the stucture andX-Ray Diffaction to know about structure and crystallinity. FTIR spectra show peak at 617,22 cm-1 area that spesific for Si-H bond, peak at 786,96 cm-1and 1095,57 cm-1 area specific for Si-O-Si bonds. Difractogram of SiO2 show that there are peak at 2θ 21,99; 31,67 and 38,88 were specific for SiO2 that calcinated at 800oC, while for SiO2 that calcinated at 400oC there were no peak at 2θ 31,67 dan 38,88. That peaks not shown may be because low crystallinity of SiO2 that calcinated at 400oC. Calcination temperature greatly affects the crystallinity of SiO2.©2017 JNSMR UIN Walisongo. All rights reserved.</p>

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Section: Characterization Of Silica From Petung Bamboo Ash Leavessupporting

confidence: 79%

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Udaibah

Priyanto

2017

J. Nat. Scien. & Math. Res.

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“…The crystallite size and lattice strain were calculated at different heating temperature using Debye-Scherer's equation and the extracted data was summarized in Table 1 (Chen et al 2003). This table shows that heating the sample till 300 °C temperature showed no major effect on the crystallite size, however, further increase in temperature to 600 °C and then at 900 °C have shown a profound effect on the crystallite size.…”

Section: Characterization Tio 2 Nanoparticlesmentioning

confidence: 99%

Effect of heating on the structural and optical properties of TiO2 nanoparticles: antibacterial activity

et al. 2018

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TiO 2 nanoparticles were synthesized at room temperature by chemical precipitation method and were then heated at 120, 300, 600 and 900 °C temperatures. The phase transition and crystallite size variation were determined by X-rays diffraction (XRD) analysis. The surface area, pore volume and pore size were measured using Brunauer-Emmet-Teller (BET) and Barrett-Joyner-Halenda (BJH) methods. The optical activity of heat treated and non-heat treated samples were carried out by diffuse reflectance (DR) spectroscopy. Four different methods were used to calculate band gap energy. The results obtained from thermogravimetric and differential thermal gravimetric (TG/TDG) analyses and Fourier transform infra-red (FTIR) spectroscopy agreed with each other. Agar well diffusion method has been applied to explore the antibacterial activity of nanoparticles against different bacterial strains such as Bacillus subtilis, Staphylococcus Aureus, Escherichia coli and Pseudomonas Aeruginosa. It was observed that TiO 2 nanoparticles heated at 120 °C displayed maximum antibacterial activity while those heated at higher temperature showed no activity against the examined bacteria.

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“…The intensive band of OH-group asymmetrical and symmetrical stretching vibrations at 3436 cm -1 and H-O-H deformation vibration at 1634 cm -1 could confirm the large amount of water molecules. However, the OH-group vibration bands became much weaker with the increase of calcination temperatures (Chen et al 2003;Bezrodna et al 2004;Watson et al 2004). bioresources.com Zhang et al (2017).…”

Section: Ftir Spectroscopy Analysis Of the Composite Catalystsmentioning

confidence: 99%

Preparation and Photocatalytic Activity of TiO2-Wrapped Cotton Nanofiber Composite Catalysts

Zhang

Wan

et al. 2017

BioRes

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A novel TiO2-wrapped nanofiber composite catalyst, which possessed a unique porous structure and mixed crystalline phase, was prepared by the combination of superficial sol-gel and post-calcination processes. By means of the superficial sol-gel process, TiO2 layers were deposited on the surface of each nanofiber-like cellulose fiber, and then the TiO2-wrapped nanofiber composite catalysts were calcined at different temperatures under a nitrogen atmosphere. With temperature increasing, the original cotton nanofiber composites were converted into porous carbon nanofiber catalysts wrapped by a TiO2 mixed crystalline phase, which was accompanied by a crystal transformation. The photocatalytic activity of the new catalysts was evaluated by the degradation of methylene blue (MB) under ultraviolet (UV) irradiation. The results demonstrated that the new catalysts had good photocatalytic ability, and the TNC-700 catalyst showed a superior photocatalytic ability compared with the other catalysts; the new catalysts had a unique porous structure, high specific surface area, and mixed crystalline phase. Additionally, the synergistic photocatalytic effect of the TiO2 and activated carbon nanofiber resulted in the efficient degradation of organic pollutants in water or air.

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The effect of calcination temperature on the crystallinity of TiO2 nanopowders

Cited by 261 publications

References 15 publications

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Synthesis and Structure Characterization of SiO2 from Petung Bamboo Leaf Ash (Dendrocalamus asper (Schult.f.) Backer ex Heyne)

Effect of heating on the structural and optical properties of TiO2 nanoparticles: antibacterial activity

Preparation and Photocatalytic Activity of TiO2-Wrapped Cotton Nanofiber Composite Catalysts

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