Anatase TiO2 porous thin films prepared by sol-gel method using CTAB surfactant

Liu, G. Q.; Jin, Zhengguo; Liu, X. X.; Wang, T.; Liu, Z. F.

doi:10.1007/s10971-006-0122-9

Cited by 73 publications

(42 citation statements)

References 20 publications

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“…It is expected that the loose packing here has a predominant influence, and therefore inhibits the transformation from anatase to rutile phases. An increase in anatase content upon the addition of CTAB surfactant is in agreement with previous work 27,28 . With CaCO 3 as a template (E1-CaCO 3 ), on the other hand, the related XRD pattern shows very broad peaks of rutile as well as weak peaks of anatase (14%) (Fig.…”

Section: Resultssupporting

confidence: 92%

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Loryuenyong¹,

Angamnuaysiri²,

Sukcharoenpong³

et al. 2012

ScienceAsia

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In this study, titania nanoparticles were successfully prepared by a sol-gel template method, employing cetyltrimethylammonium bromide (CTAB) and CaCO3 nanoparticles as templates. Titanium(IV) tetraisopropoxide and ethanol were used as a titanium precursor and alcoholic solvent, respectively. The obtained nanosized-titania was characterized by X-ray diffraction, transmission-electron microscopy, and N2 adsorption and desorption methods. The photocatalytic activity of titania was investigated from the photodegradation of methylene blue solution under UVC irradiation. The results indicated that the amount of anatase crystallites and pore characteristics were important factors influencing the degree of photocatalysis of titania nanoparticles. Highly crystalline anatase titania could be obtained through the controlled hydrolysis reaction rate and the formation of loose-packed titania nanoparticles, while high specific surface area could be achieved with a template method.

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Section: Resultssupporting

confidence: 92%

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Loryuenyong¹,

Angamnuaysiri²,

Sukcharoenpong³

et al. 2012

ScienceAsia

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“…(1) shows XRD spectrums of the synthesized TiO 2 samples, four characteristic peaks of TiO 2 are detected corresponding to the anatase phase [4,15]. As can be observed in Fig.…”

Section: Resultsmentioning

confidence: 89%

Study of the Bandgap of Synthesized Titanium Dioxide Nanoparticules Using the Sol-Gel Method and a Hydrothermal Treatment

Hurtado¹,

Sepúlveda²,

Vásquez³

2009

TOMSJ

160

101

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Abstract:In this work optical properties of titanium dioxide nanoparticles were studied. Titanium dioxide nanoparticles were synthesized by the sol-gel method followed by a hydrothermal treatment using tetraisopropyl orthotitanate (TIOT) and 2-propanol. The synthesized samples were characterized by X-ray diffraction (XRD), UV-Vis diffuse reflectance spectroscopy (UV/DRS) and nitrogen adsorption-desorption methods. The bandgap energy was obtained using the Kubelka-Munk reemission function. The catalyst synthesized with a molar ratio of R 1 (water/TIOT) = 3.5 and R 2 (2-propanol/TIOT) = 15 has a predominately anatase phase. It also has a high photo degradation of methyl orange compared to TiO 2 Degussa P-25. A shift band gap energy of 3.27 was observed.

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“…Titanium dioxide (TiO 2 ) based photocatalysis has been widely employed in environmental purification to decompose organic compounds in air and wastewater since this method can be conducted under mild reaction conditions [16]. Moreover, TiO 2 is inert to chemical corrosion, has a strong oxidizing power (with UV light) and is cost effective [17]. The successful application of photocatalysis in deep desulfurization process has been reported previously to remove thiophenes and derivatives of benzothiophene (BT) and DBT, which are the model sulfur species in gasoline [18,19], light oil [14,20] and diesel [21].…”

Section: Introductionmentioning

confidence: 99%

PREPARATION AND CHARACTERIZATION OF Cu-Fe/TiO2 PHOTOCATALYST FOR VISIBLE LIGHT DEEP DESULFURIZATION

Kait¹

2016

MJAS

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A photooxidative system for deep desulfurization of model diesel fuel was explored. Nanoparticles of anatase titania (TiO 2 ) were synthesized via sol-gel hydrothermal method. The TiO 2 was further modified with bimetallic Cu-Fe using wet-impregnation method followed by calcination process in order to extend the activity region of the photocatalyst to visible-light. A series of bimetallic 2.2 wt% Cu-Fe/TiO 2 photocatalysts with different Cu:Fe mass compositions were characterized for their physical, chemical and optical properties using X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), high resolution transmission electron microscopy (HRTEM), diffuse reflectance UV-visible spectroscopy (DR-UV-Vis), Fourier Transform Infrared Spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) surface area analysis. The performance of the photocatalysts was evaluated for photooxidation of dibenzothiophene (DBT) as the sulfur species from model oil in the presence of hydrogen peroxide, H 2 O 2 under 500 W visible light illumination. The highest sulfur conversion of 82.36 % was observed for photocatalyst with 10:1 Cu:Fe mass composition.Keywords: photocatalyst, titania, oxidation, desulfurization, visible light, copper-iron Abstrak Sistem fotopengoksidaan untuk proses nyahsulfur daripada model minyak diesel dikaji. Nanopartikel titania (TiO 2 ) dengan fasa anatas disediakan menggunakan kaedah hidrotermal sol-gel. Pengubahsuaian dengan dwilogam Cu-Fe dilakukan terhadap TiO 2 menggunakan kaedah impregnasi basah diikuti dengan proses pengkalsinan untuk melanjutkan aktiviti fotokatalis ke bahagian cahaya tampak. Siri fotokatalis dwilogam 2.2 wt% Cu-Fe/TiO 2 dengan komposisi jisim Cu:Fe yang berlainan dicirikan untuk menentukan sifat-sifat fizikal, kimia dan optik menggunakan pembelauan sinar-X (XRD), pemancaran medan mikroskopi imbasan elektron (FESEM), mikroskopi transmisi elecktron beresolusi tinggi (HRTEM), spektroskopi pantulan resapan ultraungu-tampak (DR-UV-Vis), spektroskopi transformasi Fourier inframerah (FTIR) dan analisis luas permukaan BrunauerEmmett-Teller (BET). Kajian terhadap fotopengoksidaan dibenzothiophene (DBT) sebagai spesis sulfur di dalam model minyak menggunakan fotokatalis tersebut dilakukan dalam kehadiran hidrogen peroksida, H 2 O 2 di bawah sinaran cahaya tampak 500 W. Prestasi tertinggi penukaran sulfur yang tercapai adalah 82.36 %, daripada fotokatalis yang mempunyai komposisi jisim untuk Cu:Fe sebanyak 10:1.

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Anatase TiO2 porous thin films prepared by sol-gel method using CTAB surfactant

Cited by 73 publications

References 20 publications

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Sol-gel template synthesis and photocatalytic behaviour of anatase titania nanoparticles

Study of the Bandgap of Synthesized Titanium Dioxide Nanoparticules Using the Sol-Gel Method and a Hydrothermal Treatment

PREPARATION AND CHARACTERIZATION OF Cu-Fe/TiO2 PHOTOCATALYST FOR VISIBLE LIGHT DEEP DESULFURIZATION

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