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DOI10.3390/catal9030298
Synthesis and Evaluation of Copper-Supported Titanium Oxide Nanotubes as Electrocatalyst for the Electrochemical Reduction of Carbon Oxide to Organics
Hossain, S. K. Safdar1; Saleem, Junaid2; Rahman, SleemUr3; Zaidi, Syed Mohammed Javaid4; McKay, Gordon2; Cheng, Chin Kui5
发表日期2019
ISSN2073-4344
卷号9期号:3
英文摘要

Carbon dioxide (CO2) is considered as the prime reason for the global warming effect and one of the useful ways to transform it into an array of valuable products is through electrochemical reduction of CO2 (ERC). This process requires an efficient electrocatalyst with high faradaic efficiency at low overpotential and enhanced reaction rate. Herein, we report an innovative way of reducing CO2 using copper-metal supported on titanium oxide nanotubes (TNT) electrocatalysts. The TNT support material was synthesized using alkaline hydrothermal process with Degussa (P-25) as a starting material. Copper nanoparticles were anchored on the TNT by homogeneous deposition-precipitation method (HDP) with urea as precipitating agent. The prepared catalysts were tested in a home-made H-cell with 0.5 M NaHCO3 aqueous solution in order to examine their activity for ERC and the optimum copper loading. Continuous gas-phase ERC was carried out in a solid polymer electrolyte (SPE) reactor. The 10% Cu/TNT catalysts were employed in the gas diffusion layer (GDL) on the cathode side with Pt-Ru/C on the anode side. Faradaic efficiencies for the three major products namely methanol, methane, and CO were found to be 4%, 3%, and 10%, respectively at -2.5 V with an overall current density of 120 mA/cm(2). The addition of TNT significantly increased the catalytic activity of electrocatalyst for ERC. It is mainly attributed to their better stability towards oxidation, increased CO2 adsorption capacity and stabilization of the reaction intermediate, layered titanates, and larger surface area (400 m(2)/g) as compared with other support materials. Considering the low cost of TNT, it is anticipated that TNT support electrocatalyst for ECR will gain popularity.


WOS研究方向Chemistry
来源期刊CATALYSTS
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/94068
作者单位1.King Faisal Univ, Dept Chem Engn, Coll Engn, Al Hufuf 31982, Saudi Arabia;
2.Hamad Bin Khalifa Univ, Div Sustainable Dev, Coll Sci & Engn, Qatar Fdn, Doha, Qatar;
3.King Fahd Univ Petr & Minerals, Chem Engn Dept, Dhahran 31261, Saudi Arabia;
4.Qatar Univ, Ctr Adv Mat, Doha, Qatar;
5.Univ Malaysia Pahang, Fac Chem & Nat Resources Engn, Kuantan 26300, Pahang, Malaysia
推荐引用方式
GB/T 7714
Hossain, S. K. Safdar,Saleem, Junaid,Rahman, SleemUr,et al. Synthesis and Evaluation of Copper-Supported Titanium Oxide Nanotubes as Electrocatalyst for the Electrochemical Reduction of Carbon Oxide to Organics[J],2019,9(3).
APA Hossain, S. K. Safdar,Saleem, Junaid,Rahman, SleemUr,Zaidi, Syed Mohammed Javaid,McKay, Gordon,&Cheng, Chin Kui.(2019).Synthesis and Evaluation of Copper-Supported Titanium Oxide Nanotubes as Electrocatalyst for the Electrochemical Reduction of Carbon Oxide to Organics.CATALYSTS,9(3).
MLA Hossain, S. K. Safdar,et al."Synthesis and Evaluation of Copper-Supported Titanium Oxide Nanotubes as Electrocatalyst for the Electrochemical Reduction of Carbon Oxide to Organics".CATALYSTS 9.3(2019).
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