Method for synthesizing Pd/TiO2 nanotube catalyst by UV (Ultraviolet) light induction

A technology of nanotubes and catalysts, applied in the field of preparation of ethanol fuel cell anode catalysts, can solve the problems of high price, high cost of fuel cell catalysts, limited Pt reserves, etc., to avoid poor conductivity, reduce the content of precious metals, and prepare The effect of simple method

Inactive Publication Date: 2014-08-13
SHANGHAI UNIVERSITY OF ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally, Pt is recognized as the best catalyst for the electrochemical oxidation of alcohols, but due to the limited reserves of Pt and the high price, the cost of fuel cell catalysts remains high.

Method used

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  • Method for synthesizing Pd/TiO2 nanotube catalyst by UV (Ultraviolet) light induction
  • Method for synthesizing Pd/TiO2 nanotube catalyst by UV (Ultraviolet) light induction
  • Method for synthesizing Pd/TiO2 nanotube catalyst by UV (Ultraviolet) light induction

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Embodiment 1

[0026] A UV light-induced synthesis of Pd / TiO 2 The method of nanotube catalyst adopts the method of anodic oxidation to prepare TiO 2 nanotubes, and under UV light can excite TiO 2 The characteristic of producing electrons will be pd 2+ It is reduced to Pd and deposited on the surface of TiO2 nanotubes to reduce the content of noble metals and improve the catalytic activity of the catalyst. It can be directly used as an anode catalyst for direct ethanol fuel cells. Specifically, the following steps are adopted:

[0027] (1) Synthesis of TiO by anodic oxidation 2 nanotube:

[0028] The Ti sheet was polished bright with sandpaper, ultrasonically cleaned with acetone, ethanol, and water in sequence, and then placed in H 2 O, HNO 3 , HF in an acidic solution prepared at a volume ratio of 5:4:1 and etch for 50s, rinse the surface with deionized water and ultrasonically clean it again for 1min, and place in H 2 O, CH 3 After COOH and HF were prepared in a polarizing solution...

Embodiment 2

[0033] A UV light-induced synthesis of Pd / TiO 2 The method of nanotube catalyst adopts the method of anodic oxidation to prepare TiO 2 nanotubes, and TiO can be excited under UV light 2 The characteristic of producing electrons will be pd 2+ Reduction to Pd deposited onto TiO 2 The nanotube surface reduces the content of precious metals, improves the catalytic activity of the catalyst, and can be directly used as an anode catalyst for direct ethanol fuel cells. Specifically, the following steps are adopted:

[0034] (1) Synthesis of TiO by anodic oxidation 2 nanotube:

[0035] The Ti sheet was polished bright with sandpaper, ultrasonically cleaned with acetone, ethanol, and water in sequence, and then placed in H 2 O, HNO 3 , HF in an acidic solution prepared at a volume ratio of 5:4:1 and etch for 50s, rinse the surface with deionized water and ultrasonically clean it again for 1min, and place in H 2 O, CH 3 After COOH and HF were prepared with a volume ratio of 49:0....

Embodiment 3

[0040] A UV light-induced synthesis of Pd / TiO 2 The method of nanotube catalyst adopts the method of anodic oxidation to prepare TiO 2 nanotubes, and TiO can be excited under UV light 2 The characteristic of producing electrons will be pd 2+ Reduction to Pd deposited onto TiO 2 The nanotube surface reduces the content of precious metals, improves the catalytic activity of the catalyst, and can be directly used as an anode catalyst for direct ethanol fuel cells. Specifically, the following steps are adopted:

[0041] (1) Synthesis of TiO by anodic oxidation 2 nanotube:

[0042] The Ti sheet was polished bright with sandpaper, ultrasonically cleaned with acetone, ethanol, and water in sequence, and then placed in H 2 O, HNO 3 , HF in an acidic solution prepared at a volume ratio of 5:4:1 and etch for 50s, rinse the surface with deionized water and ultrasonically clean it again for 1min, and place in H 2 O, CH 3 After COOH and HF were prepared in a polarizing solution wit...

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Abstract

The invention relates to a method for synthesizing Pd / TiO2 nanotube catalyst by UV (Ultraviolet) light induction. The method is characterized in that a TiO2 nanotube is prepared by an anodic oxidation method, the characteristic of generating electrons of TiO2 can be excited by UV light, Pd<2+> is reduced to obtain Pd which is deposited on the surface of the TiO2 nanotube, so that the content of noble metal is reduced, the catalytic activity of the catalyst is improved and the obtained catalyst can be directly used as an anodic catalyst of a direct alcohol fuel cell. Compared with the prior art, the method has the advantages that the preparation method is simple, not only the problem of poor conductivity of TiO2 nano particles is avoided, but also the content of the noble metal is reduced, the catalytic activity for CH3CH2O is higher, and the catalyst can be directly used for a direct alcohol fuel cell.

Description

technical field [0001] The invention relates to a preparation method of an anode catalyst for an ethanol fuel cell, in particular to a UV light-induced synthesis of Pd / TiO 2 nanotube catalyst approach. Background technique [0002] Problems such as environmental pollution, climate change and energy crisis brought about by the excessive utilization of traditional fossil energy have become increasingly prominent, which seriously threaten the survival and development of human beings. Therefore, the development of efficient, green and sustainable new energy power has become a hot topic in the world today. Among various new energy devices, direct ethanol fuel cells (DAEFC s ) is expected to be widely used in electric vehicles and mobile electronic devices due to its high energy density, green environmental protection, safety and portability [11]. ethanol is completely oxidized to CO 2 It is a 12-electron transfer process and involves the breaking of the C-C bond, and the brea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/44H01M4/90
CPCY02E60/50
Inventor 李巧霞曹晓璐蒋孛王龙龙王亚骏蔡文斌
Owner SHANGHAI UNIVERSITY OF ELECTRIC POWER
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