Preparation and characterization of Pt/TiO2 nanotubes catalyst for methanol electro-oxidation

Abida, Bochra; Chirchi, Lotfi; Baranton, Stève; Napporn, Têko W.; Kochkar, Hafedh; Léger, Jean‐Michel; Ghorbel, Abdelhamid

doi:10.1016/j.apcatb.2011.06.022

Cited by 92 publications

(37 citation statements)

References 36 publications

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“…in their highest oxidation state demonstrate structural and chemical stability at low pH and high potential. These metal oxides can interact synergistically with the Pt catalyst to improve catalyst performance [5][6][7][8][9][10][11][12][13]. Unfortunately, none of these oxides is electronically conducting.…”

Section: Introductionmentioning

confidence: 97%

Facile preparation of rutile Ti0.7W0.3O2 with high conductivity and its effect on enhanced electrocatalytic activity of Pt as catalyst support

Zheng

Xiong

Liu

et al. 2014

Electrochimica Acta

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Section: Introductionmentioning

confidence: 97%

Facile preparation of rutile Ti0.7W0.3O2 with high conductivity and its effect on enhanced electrocatalytic activity of Pt as catalyst support

Zheng

Xiong

Liu

et al. 2014

Electrochimica Acta

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“…The ratio of d 110 /d 600 in Table 1 was seem to be increase as the theta increase which indicated that the Na+ content was decreased because of the replacement of Na + by H + was happened during the acid washing treatment after the hydrothermal treatment [4]. XRD analysis suggested that the TNT-8 and TNT-10 exhibit almost similar properties to TiO 2 nanotubes by previous studies [3,4,23,24]. …”

Section: X-ray Diffraction (Xrd)mentioning

confidence: 61%

“…TNT is promising nanomaterial due to its high properties that suitable for various applications in fuel cell technology, solar cell, storage energy material [1] and also gas sensing properties [2]. TNT receives numerous attention in fuel cell technology as different roles for each type of fuel cell including as catalyst support for main catalyst [3][4][5][6], photocatalyst [7][8][9][10], gas sensor [2,11,12] and composite membrane [13,14]. For the synthesized method, TiO 2 nanotubes can be produced via three common methods: (i) electrochemical anodization, (ii) template assisted and (iii) hydrothermal method.…”

mentioning

confidence: 99%

INFLUENCE OF HIGHLY CONCENTRATED SODIUM HYDROXIDE (NaOH) TOWARDS FORMATION OF HIGHLY ORDERED TIO2 NANOTUBES (TNT) STRUCTURE

Abdullah

Kamarudin²

2016

MJAS

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In this study, titanium dioxide nanotubes (TNT) were synthesis according to different concentration of sodium hydroxide (NaOH). The main purpose of this study was to investigate the effect of the high concentration NaOH towards formation of TiO 2 nanotubes structure. TNT was synthesized via hydrothermal method that was performed in a Teflon line stainless steel autoclave by using different concentration of NaOH (6 M to 12 M). The hydrothermal time and temperature is placed constantly for 24 hours and 110 o C respectively. The characterization of TNT was performed by Field Emission Transmission Electron Microscopy (FESEM), X-ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and Energy Dispersive X-ray (EDX) analysis for better understanding of its nanotubes structure and the chemical bonding present. Based on characterization analysis, the formation of nanotubes was in systematic arrangement and makes it easier for loading of noble catalyst. Furthermore, the replacement of sodium content by hydrogen ion, H + also seem to be increasing after the acid washing treatment. The investigation result proven that the best concentration of NaOH for TiO 2 nanotubes formation was 10 M (TNT-10). Keywords: TiO 2 nanotubes, hydrothermal reaction, concentration of sodium hydroxide AbstrakMelalui kajian ini, nanotiub titanium dioksida disintesiskan mengikut kepekatan sodium hidrosida (NaOH) yang berbeza. Tujuan utama kajian ini adalah untuk mengkaji kesan kepekatan NaOH yang tinggi terhadap pembentukan struktur nanotiub. Nanotiub titanium dioksida (TNT) dihasilkan dengan menggunakan kaedah hidrotermal menggunakan turus teflon autoklaf keluli anti karat dengan mempelbagaikan kepekatan NaOH (6 M hingga 12 M). Tempoh dan suhu proses hidrotermal masing-masing dibiarkan sekata selama 24 jam dan 110 o C. Pencirian TNT dijalankan dengan menggunakan Mikroskopi Elektron Pengimbasan Pancaran Medan (FESEM), Pembelauan Sinar X (XRD), Spektroskopi Inframerah Transformasi Fourier (FTIR) dan Tenaga Serakan Sinar X (EDX) bagi memahami dengan lebih mendalam mengenai struktur nano dan juga ikatan kimia yang wujud. Berdasarkan analisis yang dijalankan, didapati nanotiub berada dalam keadaan yang sistematik dan memudahkan penempatan pemangkin adi. Tambahan pula, penggantian kandungan sodium oleh H + juga meningkat selepas proses pembasuhan menggunakan asid. Keputusan ujikaji menunjukkan kepekatan 10 M (TNT-10) adalah yang terbaik bagi menghasilkan nanotiub TiO 2 .Kata kunci: nanotiub TiO 2 , tindak balas hidrotermal, kepekatan sodium hidroksida ISSN -2506 Masturah & Siti Kartom: INFLUENCE OF HIGHLY CONCENTRATED SODIUM HYDROXIDE (NaOH) TOWARDS FORMATION OF HIGHLY ORDERED TIO 2 NANOTUBES (TNT) STRUCTURE 1406 IntroductionSince the discovery of carbon nanotubes (CNT) in 1990s, researchers are eager to find and develop more nanotubular structures with different types of materials that can be used for variable purpose. Due to over corrosive of carbon based materials, it seems to be less interesting for catalytic application and...

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“…1a) at 2h = 24.5°, 27.8°and 48.4°reveal the presence of hydrogenotitanate nanotubes ''H 2 Ti 2 O 5 ÁH 2 O'' phase [35]. After calcinations at 400°C for 2 h, phase transformation can be observed from Fig.…”

Section: Resultsmentioning

confidence: 78%

Silver nanoparticles decorated anatase TiO 2 nanotubes for removal of pentachlorophenol from water

Yang

et al. 2015

Journal of Colloid and Interface Science

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a b s t r a c tOne-dimensional nanotubes are promising materials for environmental applications. In this study, anatase TiO 2 nanotubes (TNTs) were fabricated using an alkaline hydrothermal method at 130°C and then calcinated at 400°C for 2 h. Ag nanoparticles were photo-deposited onto the TNTs for enhanced photodegradation of pentachlorophenol (PCP) under simulated solar light. The samples were characterized using transmission electron microscopy, physical adsorption of nitrogen, X-ray diffraction, X-ray photoelectron spectroscopy and UV-Visible diffuse reflectance spectroscopic techniques. The as-synthesized TNTs showed tubular structures with the outer and inner diameter of 9-10 and 5-6 nm, respectively. The results showed that metallic Ag nanoparticles were uniformly dispersed on the TNTs surface, and Ag/TNTs exhibited significant visible-light absorption. After 180 min irradiation, about 99% PCP was removed by Ag/TNTs (5.4 at.%), compared to 54.3% by P25 and 59.4% by pure TNTs. This is attributed to the synergistic effects between Ag nanoparticles acting as traps to effectively capture the photo-generated electrons, and the localized surface plasmon resonance (LSPR) of Ag nanoparticles promoting the absorption of visible light. The intermediates during the PCP photodegradation were systematically analyzed, ruling out the existence of high toxic polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans. Ag/TNTs showed excellent stability even after five cycles.

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Preparation and characterization of Pt/TiO2 nanotubes catalyst for methanol electro-oxidation

Cited by 92 publications

References 36 publications

Facile preparation of rutile Ti0.7W0.3O2 with high conductivity and its effect on enhanced electrocatalytic activity of Pt as catalyst support

Facile preparation of rutile Ti0.7W0.3O2 with high conductivity and its effect on enhanced electrocatalytic activity of Pt as catalyst support

INFLUENCE OF HIGHLY CONCENTRATED SODIUM HYDROXIDE (NaOH) TOWARDS FORMATION OF HIGHLY ORDERED TIO2 NANOTUBES (TNT) STRUCTURE

Silver nanoparticles decorated anatase TiO 2 nanotubes for removal of pentachlorophenol from water

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