Effect of annealing temperature on Raman spectra of TiO2 nanoparticles

Mathpal, Mohan Chandra; Tripathi, Anand Kumar; Singh, Manish Kumar; Gairola, S.P.; Pandey, S. N.; Agarwal, Arvind

doi:10.1016/j.cplett.2012.10.082

Cited by 142 publications

(90 citation statements)

References 27 publications

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“…The other peaks of TiO 2 are also present at 405, 525, and 648 cm −1 . These peaks are all characteristic peaks of the anatase phase of TiO 2 [23]. However, for the MC-T samples, it is clear that there are some changes in their Raman spectra after the thermal treatment.…”

Section: Resultsmentioning

confidence: 93%

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Hao

Jiang

et al. 2015

Sci. China Mater.

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The fabrication of heterojunction between different crystalline phases has been considered to be an effective strategy for promoting charge separation during photocatalytic process. Herein, the mixed-crystalline-phase (MC), spindle-like TiO2 was prepared with a simple hydrothermal method, which was followed by a series of calcination processes. The final products are composed of two crystalline phases including anatase and brookite. The anatase/brookite ratio of the TiO2 is tuned by varying the calcination temperature. The MC TiO2 that consisted of 85.5% anatase and 14.5% brookite has the highest rate of photocatalytic hydrogen evolution (290.2 μmol h −1 ) compared to the purely anatase TiO2. This is attributed to the mixedphase heterojunction structure that improves electron-hole separation, and therefore, enhances the photocatalytic hydrogen production.

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Section: Resultsmentioning

confidence: 93%

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Hao

Jiang

et al. 2015

Sci. China Mater.

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“…The spectra exhibit an active mode centered around 665 cm -1 , which is attributed to the Eg mode of the anatase phase [12,24]. For all annealing temperatures, Raman scattering reveals the presence of mixed (anatase and rutile) Raman active modes.…”

Section: Structural Propertiesmentioning

confidence: 90%

“…The effect of the annealing temperature on TiO 2 powders has been often reported in the literature [11][12][13]. Mathpal et al have studied the effect of annealing temperature on the structural and luminescence properties of TiO 2 powders [12].…”

Section: Introductionmentioning

confidence: 99%

“…Mathpal et al have studied the effect of annealing temperature on the structural and luminescence properties of TiO 2 powders [12]. Another study has investigated the effect of the annealing temperature on TiO 2 thin films, prepared by the sol-gel method and dip-coating techniques [22].…”

Section: Introductionmentioning

confidence: 99%

“…The anatase and rutile phases belong to different space groups but both have a tetragonal crystal lattice. Rutile is the most stable form of TiO 2 , whereas anatase and brookite are metastable and transform to the rutile phase upon heating [6,[12][13][14]. Conventional methods to prepare TiO 2 thin films are pulsed laser deposition (PLD) [15,16], RF magnetron sputtering [17][18][19] plasma enhanced chemical vapor deposition [20], and sol-gel methods [6,15,21,22], among others.…”

Section: Introductionmentioning

confidence: 99%

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Annealing Temperature Effect on the Physical Properties of Titanium Oxide Thin Films Prepared by the Sol-Gel Method

K¹,

I²,

Jlassi³

et al. 2017

J Phys Chem Biophys

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Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Cao

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: The recovery and reuse of sonocatalysts are the pivotal issues in the sonocatalytic degradation of organic pollutants. The use of some natural minerals as the carrier is not only beneficial to recycling of sonocatalysts, but also reduces the treatment costs of organic pollutants. Two kinds of hydroxyapatite (HAP), Ox Bone (OB)-HAP and synthesized (Syn)-HAP combine with the Pt-TiO 2 /(Er 3+ :Y 3 Al 5 O 12 @Ta 2 O 5 ) (P-TET) composite, obtaining two Z-scheme sonocatalysts, P-TET/OB-HAP and P-TET/Syn-HAP, respectively. The sonocatalytic activities of the prepared samples are investigated via degradation of prometryn and disinfection of Escherichia coli.RESULTS: A series of characterizations showed that the Z-scheme P-TET/(OB or Syn)-HAP sonocatalysts were prepared successfully. To evaluate their sonocatalytic activities, some influencing factors such as ultrasonic irradiation time, inorganic oxidants, used times and trapping agents on the sonocatalytic degradation prometryn were determined. The best degradation ratio (80.31% based on N computing and 85.07% based on S atom computing) of prometryn could be obtained for 10 mmol L −1 K 2 S 2 O 8 , 1.0 g L −1 P-TET/OB-HAP sonocatalyst and 150 min ultrasonic irradiation. The excellent sonocatalytic disinfection ratio (88.65%) of E. coli could also be obtained under 40 min ultrasound irradiation. Moreover, a possible mechanism on sonocatalytic degradation of prometryn was illustrated.CONCLUSION: The treated bovine bone HAP was directly used as a carrier to combine with P-TET to construct a novel Z-scheme P-TET/OB-HAP sonocatalyst. The high degradation ratio of prometryn and disinfection ratio of E. coli showed that P-TET/OB-HAP could be a promising sonocatalyst for the degradation of organic pollutants and the disinfection of bacteria.

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Effect of annealing temperature on Raman spectra of TiO2 nanoparticles

Cited by 142 publications

References 27 publications

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Annealing Temperature Effect on the Physical Properties of Titanium Oxide Thin Films Prepared by the Sol-Gel Method

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

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Effect of annealing temperature on Raman spectra of TiO2 nanoparticles

Cited by 142 publications

References 27 publications

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Fabrication of mixed-crystalline-phase spindle-like TiO2 for enhanced photocatalytic hydrogen production

Annealing Temperature Effect on the Physical Properties of Titanium Oxide Thin Films Prepared by the Sol-Gel Method

Construction of Z‐scheme Pt‐TiO2/(Er3+:Y3Al5O12@Ta2O5)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

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Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli