氢能源被认为是一种环保的二次能源。电解水生成氢气,这一过程不仅环保,而且拥有极大的潜力。典型的水电解程序要求一个相对较高的电压来完成分解过程。糠醛与电解水的热动力学分解特性相比较,表现更为优越,因此在电解氢的生产过程中,采用糠醛可以显著减少能耗。糠醛氧化催化剂的高性能制备,成为当前糠醛电解氢气生产领域关注的核心。本文开篇阐述了电催化氧化糠醛的研究背景。近期研究对糠醛电化学氧化催化剂的进展进行了梳理,涵盖了贵金属及金属氧化物两类催化剂的研究情况。对未来的研究愿景进行了描绘,针对糠醛电化学氧化催化剂的领域。Hydrogen serves as a clean and eco-conscious alternative energy source. Electrolytic water splitting is a method of hydrogen generation that offers significant environmental benefits and exhibits a wide range of potential applications. However, conventional water electrolysis necessitates a substantial theoretical voltage for decomposition. Furfural exhibits superior thermodynamic properties for decomposition compared to water electrolysis, thereby offering a significant potential to diminish energy consumption during hydrogen production via electrolytic processes. The development of high-performance furfural oxidation catalysts represents a significant focus in the field of furfural electrolysis for hydrogen production research. This study presents an exploration of the electrocatalytic oxidation of furfural. This study collates and reviews the current progress in the field of furfural electrochemical oxidation, encompassing both noble metal and metal oxide catalysts, as documented in recent scholarly contributions. Finally, potential avenues for future research into the electrochemical oxidation catalyst for furfural are outlined.
商业Pt/C是最常用的析氢催化剂,但其成本高昂,储量有限,因此降低Pt负载量以降低成本是实现长久发展的关键。在Pt中引入其它金属组分对催化剂进行表面修饰等是当下对Pt基纳米催化剂表面改性的研究热点。本论文以酸处理的科琴黑为载体,氯亚铂酸钾和硝酸镍为主要金属催化剂前驱体,通过超声辅助还原法将金属离子Pt2+和Ni2+还原为PtNi合金,并以纳米团簇的形式沉积于载体上,成功制备出高效、稳定的酸处理PtNi纳米团簇催化剂(PtNiNC-acid)。研究发现,当电流密度为50 mA cm−2时,PtNiNC-acid的过电位为33 mV;PtNiNC-acid在10 mA cm−2和100 mA cm−2的电流密度下,分别具有55 h和45 h的优良稳定性,这证明了PtNiNC-acid在碱性溶液中具有较高的HER活性和稳定性。Commercial Pt/C is the most commonly used hydrogen evolution catalyst, but its cost is high and its reserves are limited, so reducing Pt load to reduce costs is the key to achieve long-term development. The introduction of other metal components in Pt to modify the surface of the catalyst is the current research focus on the surface modification of Pt based nano-catalyst. In this paper, acid treated Keqin black as the carrier, potassium chlorophosphite and nickel nitrate as the main metal catalyst precursor, the metal ions Pt2+ and Ni2+ were reduced to PtNi alloy by ultrasonic assisted reduction method, and deposited on the carrier in the form of nano-clusters. An efficient and stable acid-treated PtNi nanocluster catalyst (PtNiNC-acid) was successfully prepared. It was found that the overpotential of PtNiNC-acid was 33 mV when the current density was 50 mA cm−2. The excellent stability of PtNiNC-acid at the current densities of 10 mA cm−2 and 100 mA cm−2 for 55 h and 45 h, respectively, proves that PtNiNC-acid has high HER activity and stability in alkaline solutions.
