Electrocatalytic Oxidation of Glycerol using Electrolessly Deposited CuNiSnP Electrocatalysts Supported on Carbon in Alkaline Media

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2023-08-30 DOI:10.1007/s12678-023-00840-z

Wasu Chaitree, Joongjai Panpranot

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Abstract

The electro-oxidation of glycerol (EOG) has gained wide attention as an alternative to producing value-added chemicals for glycerol valorization. In this study, a multimetallic electrocatalyst containing copper (Cu), nickel (Ni), tin (Sn), and phosphorus (P) was supported on a carbon catalyzed substrate (CCS) using an electroless deposition technique and evaluated for EOG. The effect of the electroless deposition time (15, 30, and 45 min) was also studied. Characterization of the CuNiSnP/CCS electrocatalyst via X-ray diffraction, scanning electron microscopy, and inductively coupled plasma optical emission spectroscopy revealed the formation of a thin-film morphology containing Cu as the main species on the surface and covering the carbon substrate. The electrochemical performance evaluation showed that the electrocatalyst obtained after 30 min of electroless deposition produced the maximum current density (6.5 mA/cm²). The multimetallic composition of CuNiSnP/CCS provided better reaction performance than related tri- (CuNiP/CCS and NiSnP/CCS), bi- (NiP/CCS), and monometallic (Cu/CCS) composites according to the peak current densities for the forward (i_f) and backward (i_b) oxidation, the i_f/i_b ratio, and the onset potential. Furthermore, CuNiSnP/CCS exhibited more stable and stronger resistance to poisoning. Overall, this study demonstrates the potential of the new electrode material CuNiSnP/CCS as an effective electrocatalyst for EOG.

Graphical Abstract

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碳负载CuNiSnP电催化剂在碱性介质中催化氧化甘油的研究

甘油电氧化(EOG)作为生产甘油增值化学品的一种替代方法受到了广泛的关注。在本研究中，采用化学沉积技术将含铜(Cu)、镍(Ni)、锡(Sn)和磷(P)的多金属电催化剂负载在碳催化底物(CCS)上，并进行了EOG评价。研究了化学沉积时间(15min、30min和45min)的影响。通过x射线衍射、扫描电镜和电感耦合等离子体发射光谱对CuNiSnP/CCS电催化剂进行表征，发现其表面形成以Cu为主要物质的薄膜形态，覆盖在碳衬底上。电化学性能评价表明，化学沉积30 min后得到的电催化剂产生最大电流密度(6.5 mA/cm2)。从正向(if)和反向(ib)氧化的峰值电流密度、if/ib比和起效电位来看，CuNiSnP/CCS的多金属组分比相关的三- (CuNiP/CCS和NiSnP/CCS)、双- (NiP/CCS)和单金属(Cu/CCS)复合材料的反应性能更好。CuNiSnP/CCS表现出更稳定、更强的抗中毒能力。总的来说，这项研究证明了新型电极材料CuNiSnP/CCS作为EOG有效电催化剂的潜力。图形抽象

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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.