Chinh Chien Nguyen*, Cong Hong Nhat Nguyen, To Luong Nguyen, Trung Hieu Le, Minh Tuan Nguyen Dinh, Do Thi Thuy Van, Hue Thi Pham, Hue Ngoc Thi Nguyen, Tuyen Anh Luu*, Ngoc Linh Nguyen*, My Uyen Dao, Quang Hung Nguyen, Hai Khoa Le and Quyet Van Le*,
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引用次数: 0
摘要
本文合成了Cu/Cu2O修饰的泡沫镍(命名为Cu/Cu2O/NF-Gly),并将其作为析氢反应(HER)和葡萄糖氧化反应(GOR)的双电催化剂。该材料是通过简单的甘油辅助水热法合成的,其中甘油作为关键剂,保留NF支持并驱动Cu和Cu2O相的生长。表征结果表明,在NF载体上存在Cu和Cu2O相。此外,正电子湮灭光谱测量揭示了材料的完整结构,其中Cu和Cu2O相分别通过Cu - ni和Ni-O-Cu键直接与NF载体结合。密度泛函理论计算也证明了Cu/Cu2O/NF-Gly对HER和GOR的结构稳定性和较强的性能。结果表明,制备的Cu/Cu2O/NF-Gly电极在两种反应中均表现出优异的电催化活性。令人印象深刻的是,当所制备的催化剂作为阴极和阳极时,其析氢速率为2.75 mmol·h-1·cm-2,对应于在1.7 V vs可逆氢电极下产氢耦合葡萄糖氧化应用中氢气的法拉第效率为100.1%。我们的研究结果强调了使用Cu/Cu2O纳米颗粒修饰的NFs在产氢偶联葡萄糖氧化系统中产生有价值的化学物质的潜力。
Cu/Cu2O Nanoparticle–Decorated Nickel Foam as an Electrocatalyst for Hydrogen Evolution and Glucose Oxidation
Herein, a Cu/Cu2O-decorated nickel foam (named Cu/Cu2O/NF-Gly) is synthesized and used as a bielectrocatalyst for the hydrogen evolution reaction (HER) and glucose oxidation reaction (GOR). This material is synthesized via a facile glycerol-assisted hydrothermal method, in which glycerol functions as a critical agent, preserving the NF support and driving the growth of Cu and Cu2O phases. Characterization results prove the presence of Cu and Cu2O phases on the NF support. Furthermore, positron annihilation spectroscopy measurements reveal the complete architecture of the material, in which Cu and Cu2O phases are directly bonded to the NF support via Cu–Ni and Ni–O–Cu bonds, respectively. Density functional theory calculations also prove the structural stability and strong capabilities of Cu/Cu2O/NF-Gly for the HER and GOR. Consequently, the prepared Cu/Cu2O/NF-Gly electrode exhibits excellent electrocatalytic activities in both reactions. Impressively, when the prepared catalyst is employed as the cathode and anode, it exhibits a remarkable hydrogen evolution rate of 2.75 mmol·h–1·cm–2, corresponding to the remarkable Faradaic efficiency of 100.1% for hydrogen in hydrogen production–coupled glucose oxidation applications at 1.7 V vs reversible hydrogen electrode. Our results underscore the potential of using Cu/Cu2O nanoparticle–decorated NFs to produce valuable chemicals in hydrogen production–coupled glucose oxidation systems.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.