Electrocatalytic Performance of Nickel Hydroxide-Decorated Microporous Nanozeolite Beta-Modified Carbon Paste Electrode for Formaldehyde Oxidation

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2022-12-21 DOI:10.1007/s12678-022-00799-3

Samira Eshagh-Nimvari, Seyed Karim Hassaninejad-Darzi

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引用次数: 1

Abstract

In this paper, aluminosilicate nanozeolite beta has been prepared and described using X-ray diffraction (XRD), nitrogen sorption isotherm, Fourier transform infrared (FT-IR), transmission electron micrograph (TEM), and field emission scanning electronic microscopy (FESEM) techniques; TEM image demonstrated semispherical particles with dimensions under 50 nm. The BET surface area, total pore volume, and pore diameter of it were attained to be 321 m² g⁻¹, 0.053 cm³ g⁻¹, and 1.22 nm, respectively. The modified carbon paste electrode by aluminosilicate nanozeolite beta and nickel hydroxide (Ni(OH)₂-Beta/CPE) was applied for formaldehyde (HCHO) electrocatalytic oxidation. The obtained results specify that Ni(OH)₂-Beta/CPE demonstrates worthy electrocatalytic activity for oxidation of HCHO due to mesoporous construction and the great surface area of nanozeolite. The electron-transfer coefficient, catalytic rate constant, and diffusion coefficient are found to be 0.69, 2.08 × 10⁶ cm³ mol⁻¹ s⁻¹, and 4.4 × 10⁻⁷ cm² s⁻¹, respectively. The Ni(OH)₂-Beta/CPE exhibited low background current, simplicity of surface renewal, good reproducibility, and stability and also displayed high stability up to 300 cycles and 3000 s without an important loss in the current density. This modified electrode has better poisoning tolerance capability than bare CPE for HCHO electrocatalytic oxidation and is a higher device for the long term accomplishment.

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羟基镍修饰微孔纳米沸石修饰碳糊电极对甲醛氧化的电催化性能

本文采用x射线衍射(XRD)、氮吸附等温线、傅里叶变换红外(FT-IR)、透射电子显微镜(TEM)和场发射扫描电子显微镜(FESEM)等技术对铝硅酸盐纳米沸石β进行了制备和表征;TEM图像显示尺寸在50 nm以下的半球形颗粒。得到的BET比表面积为321 m2 g−1，总孔容为0.053 cm3 g−1，孔径为1.22 nm。采用铝硅酸盐纳米沸石和氢氧化镍(Ni(OH)2- β /CPE)改性碳糊电极对甲醛(HCHO)进行电催化氧化。结果表明，由于Ni(OH)2-Beta/CPE的介孔结构和纳米沸石的大表面积，对HCHO的氧化具有良好的电催化活性。电子转移系数、催化速率常数和扩散系数分别为0.69、2.08 × 106 cm3 mol−1 s−1和4.4 × 10−7 cm2 s−1。Ni(OH)2-Beta/CPE具有背景电流小、表面更新简单、重现性好、稳定性好等特点，在300次循环和3000 s内具有较高的稳定性，且电流密度没有明显损失。该修饰电极对HCHO电催化氧化具有比裸CPE更好的耐中毒能力，是一种长期完成的较高的装置。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.