College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, PR China.
Jiangsu Key Laboratory for Environment Functional Materials, School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, PR China.
J Colloid Interface Sci. 2023 Oct;647:519-527. doi: 10.1016/j.jcis.2023.05.095. Epub 2023 May 18.
Fabricating 2D nanomaterials with heterogeneous structure is a feasible way to improve catalytic performance owing to its large surface area and tunable electron structure. However, such a category has not been widely reported in the field of alcohol oxidation reaction (AOR). In this work, we reported a new type of heterostructure nanosheet with Ru nanoparticles decorated around the edge of PdRu nanosheets (Ru-PdRu HNSs). Particularly, strong electronic interaction and sufficient active sites attributed to the construction of heterogeneous interface, is the key to the superior electrocatalytic behavior of Ru-PdRu HNSs towards methanol oxidation reaction (MOR), ethylene glycol oxidation reaction (EGOR), and glycerol oxidation reaction (GOR). Remarkably, owing to the enhanced electron transfer brought by the introduction of the Ru-PdRu heterogeneous interface, these novel nanosheets are highly durable. Apart from being able to maintain the highest current density after 4000 s chronoamperometry test, Ru-PdRu HNSs can be reactivated with negligible activity loss in MOR and GOR test after four consecutive i-t experiments. Impressively, in the EGOR test, after reactivation, the current density is step-wisely increased, making it one of the best AOR electrocatalysts.
采用具有异质结构的二维纳米材料是提高催化性能的一种可行方法，因为它具有较大的比表面积和可调谐的电子结构。然而，在醇氧化反应（AOR）领域，此类材料尚未得到广泛报道。在这项工作中，我们报道了一种新型的具有 Ru 纳米粒子围绕 PdRu 纳米片边缘修饰的异质结构纳米片（Ru-PdRu HNSs）。特别地，由于构建了异质界面，从而产生了强电子相互作用和充足的活性位点，这是 Ru-PdRu HNSs 对甲醇氧化反应（MOR）、乙二醇氧化反应（EGOR）和甘油氧化反应（GOR）表现出优异电催化性能的关键。值得注意的是，由于引入了 Ru-PdRu 异质界面增强了电子转移，这些新型纳米片具有很高的耐久性。除了在 4000 s 的计时安培测试后能够保持最高电流密度外，在 MOR 和 GOR 测试中，经过四个连续的 i-t 实验后，Ru-PdRu HNSs 可以进行再激活，而活性损失可忽略不计。令人印象深刻的是，在 EGOR 测试中，再激活后，电流密度逐步增加，使其成为最佳的 AOR 电催化剂之一。
