Ethanol electro-oxidation activity of Nb-doped-TiO 2 supported PdAg catalysts in alkaline media

Son Truong Nguyen; Yanhui Yang; Xin Wang

doi:10.1016/j.apcatb.2011.11.046

Ethanol electro-oxidation activity of Nb-doped-TiO ₂ supported PdAg catalysts in alkaline media

Son Truong Nguyen, Yanhui Yang, Xin Wang

Nanyang Technological University

Research output: Contribution to journal › Article › peer-review

82 Scopus citations

Abstract

Various mesoporous Nb-doped titania materials were synthesized by a hydrothermal method and examined as catalyst support for PdAg alloy particles for alkaline direct ethanol fuel cell (ADEFC). X-ray diffraction, nitrogen adsorption/desorption, transmission electron microscopy (TEM), cyclic voltammetry (CV) and chronoamperometry (CA) were used to investigate the properties of the supports and catalysts. 700°C was found as the optimal activation temperature for Nb-doped TiO ₂ due to the high electronic conductivity achievement and mesoporosity conservation. X-ray diffraction (XRD) revealed that Nb _xTi _1-xO ₂ had a structure of mixed anatase and rutile phases. PdAg/Nb _xTi _1-xO ₂ exhibited excellent performance for the electrooxidation of ethanol and higher durability in alkaline solution compared with PdAg/C and PdAg/commercial TiO ₂. The results open a new way to develop durable and effective electrocatalysts for ADEFC.

Original language	English
Pages (from-to)	261-270
Number of pages	10
Journal	Applied Catalysis B: Environmental
Volume	113-114
DOIs	https://doi.org/10.1016/j.apcatb.2011.11.046
State	Published - 22 Feb 2012
Externally published	Yes

Keywords

Direct ethanol fuel cell
Ethanol oxidation
Nb-doped TiO
Palladium-silver

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10.1016/j.apcatb.2011.11.046

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title = "Ethanol electro-oxidation activity of Nb-doped-TiO 2 supported PdAg catalysts in alkaline media",

abstract = "Various mesoporous Nb-doped titania materials were synthesized by a hydrothermal method and examined as catalyst support for PdAg alloy particles for alkaline direct ethanol fuel cell (ADEFC). X-ray diffraction, nitrogen adsorption/desorption, transmission electron microscopy (TEM), cyclic voltammetry (CV) and chronoamperometry (CA) were used to investigate the properties of the supports and catalysts. 700°C was found as the optimal activation temperature for Nb-doped TiO 2 due to the high electronic conductivity achievement and mesoporosity conservation. X-ray diffraction (XRD) revealed that Nb xTi 1-xO 2 had a structure of mixed anatase and rutile phases. PdAg/Nb xTi 1-xO 2 exhibited excellent performance for the electrooxidation of ethanol and higher durability in alkaline solution compared with PdAg/C and PdAg/commercial TiO 2. The results open a new way to develop durable and effective electrocatalysts for ADEFC.",

keywords = "Direct ethanol fuel cell, Ethanol oxidation, Nb-doped TiO, Palladium-silver",

author = "Nguyen, {Son Truong} and Yanhui Yang and Xin Wang",

year = "2012",

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doi = "10.1016/j.apcatb.2011.11.046",

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volume = "113-114",

pages = "261--270",

journal = "Applied Catalysis B: Environmental",

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T1 - Ethanol electro-oxidation activity of Nb-doped-TiO 2 supported PdAg catalysts in alkaline media

AU - Nguyen, Son Truong

AU - Yang, Yanhui

AU - Wang, Xin

PY - 2012/2/22

Y1 - 2012/2/22

N2 - Various mesoporous Nb-doped titania materials were synthesized by a hydrothermal method and examined as catalyst support for PdAg alloy particles for alkaline direct ethanol fuel cell (ADEFC). X-ray diffraction, nitrogen adsorption/desorption, transmission electron microscopy (TEM), cyclic voltammetry (CV) and chronoamperometry (CA) were used to investigate the properties of the supports and catalysts. 700°C was found as the optimal activation temperature for Nb-doped TiO 2 due to the high electronic conductivity achievement and mesoporosity conservation. X-ray diffraction (XRD) revealed that Nb xTi 1-xO 2 had a structure of mixed anatase and rutile phases. PdAg/Nb xTi 1-xO 2 exhibited excellent performance for the electrooxidation of ethanol and higher durability in alkaline solution compared with PdAg/C and PdAg/commercial TiO 2. The results open a new way to develop durable and effective electrocatalysts for ADEFC.

AB - Various mesoporous Nb-doped titania materials were synthesized by a hydrothermal method and examined as catalyst support for PdAg alloy particles for alkaline direct ethanol fuel cell (ADEFC). X-ray diffraction, nitrogen adsorption/desorption, transmission electron microscopy (TEM), cyclic voltammetry (CV) and chronoamperometry (CA) were used to investigate the properties of the supports and catalysts. 700°C was found as the optimal activation temperature for Nb-doped TiO 2 due to the high electronic conductivity achievement and mesoporosity conservation. X-ray diffraction (XRD) revealed that Nb xTi 1-xO 2 had a structure of mixed anatase and rutile phases. PdAg/Nb xTi 1-xO 2 exhibited excellent performance for the electrooxidation of ethanol and higher durability in alkaline solution compared with PdAg/C and PdAg/commercial TiO 2. The results open a new way to develop durable and effective electrocatalysts for ADEFC.

KW - Direct ethanol fuel cell

KW - Ethanol oxidation

KW - Nb-doped TiO

KW - Palladium-silver

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JO - Applied Catalysis B: Environmental

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ER -

Ethanol electro-oxidation activity of Nb-doped-TiO ₂ supported PdAg catalysts in alkaline media

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Keywords

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