Cu(OH)2-Ni(OH)2 engulfed by zeolite-Y hydroxyl nest and multiwalled carbon nanotube for effective methanol oxidation reaction

被引：24

作者：

Hoque, Nazimul ^{[1
]}

Baruah, Manash J. ^{[1
]}

Lee, Seonghwan ^{[2
]}

Park, Young-Bin ^{[2
]}

Dutta, Rupjyoti ^{[3
]}

Roy, Subhasish ^{[4
]}

Bania, Kusum K. ^{[1
]}

机构：

[1] Tezpur Univ, Dept Chem Sci, Tezpur 784028, Assam, India

[2] Ulsan Natl Inst Sci & Technol, Dept Mech Engn, UNIST Gil 50, Ulsan 44919, South Korea

[3] CSIR North East Inst Sci & Technol, Mat Sci & Technol Div MSTD, Jorhat 785006, Assam, India

[4] Assam Don Bosco Univ, Sch Fundamental & Appl Sci, Dept Chem, Sonapur 782402, Assam, India

来源：

ELECTROCHIMICA ACTA | 2021年 / 397卷

关键词：

Cu(OH)(2)-Ni(OH)(2); Zeolite-Y; Multi-walled carbon nanotube; Methanol oxidation; IN-SITU CRYSTALLIZATION; TEMPLATED SYNTHESIS; EFFICIENT CATALYST; HIGH-PERFORMANCE; CORE-SHELL; FUEL-CELLS; HYDROGEN; CU; NANOPARTICLES; WATER;

D O I：

10.1016/j.electacta.2021.139313

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Cu(OH)(2)-Ni(OH)(2) supported on zeolite-Y and combined with multi-walled carbon nanotube (MWCNT), M(OH)(2)-Y-CNT (M = Cu, Ni) was found to be an excellent multicomponent hybrid system for methanol oxidation reaction (MOR). The formation of metal hydroxyl nest interconnected through MWCNT produced a high current density of 5.5 A/mg with significant durability up to 11.1 h. The electrochemical oxidation of methanol was found to be significant with maximum current density when the Cu:Ni ratio was 3:1. The surface hydroxyl group of zeolite-Y and-COOH functional group of MWCNT interacted strongly with Cu(OH)(2) and Ni(OH)(2) and provided a strong metal to surface interaction. From the temperature programme desorption (TPD) study and pyridine adsorption FTIR analysis, it was evident that both the acidity and basicity of Cu(OH)(2)-Ni(OH)(2)-Y catalyst was influenced by the MWCNT and consequently helped in MOR. Modification with MWCNT also lead to the change in the binding energy values of Cu and Ni and thereby effected the overall MOR activity of the electrocatalyst. The MOR activity of the hybrid material was tested by modifying the glassy carbon working electrode (GCE) as well in Pt working electrode. The MOR activity was found to be much better with Pt-electrode in comparison to GCE in terms of current density, durability and stability. The Pt-electrode modified with the hybrid M(OH)(2)-Y-MWCNT exhibited high CO tolerance in comparison to commercial Pt/ C electrocatalyst. (C) 2021 Elsevier Ltd. All rights reserved.

引用

页数：14