2023年11月14日 · The excellent performance of the Pt/CNT CL is attributed to effective mass transfer, the high degree of graphitization of CNTs and the Pt utilization rate. The obtained results can guide the widespread use of CNTs in fuel cell catalyst synthesis.

Herein, Pt species (0.5 wt.%) with various particle sizes supported on carbon nanotubes (CNTs) have been synthesized by a photo-reduction method. The ~1.5 nm-sized Pt catalyst shows much higher HER performance than the counterparts in all pH solutions, and the mass activity of it is even 23–36 times that of Pt/C.

2020年6月1日 · Understanding carbon-supported Pt-catalyzed oxygen reduction reaction (ORR) from the perspective of the active sites is of fundamental and practical importance. In this study, three differently sized carbon nanotube-supported Pt nanoparticles (Pt/CNT) are prepared by both atomic layer deposition (ALD) and impregnation methods.

2014年11月18日 · We report a size-dependent activity in Pt/CNT catalyzed hydrolytic dehydrogenation of ammonia borane. Kinetic study and model calculations revealed that Pt (111) facet is the dominating catalytically active surface. There is …

2024年7月25日 · The well-dispersed PtRu bimetallic clusters with adjacent MO 2–x (M = Sn and Ce) on carbon nanotubes (PtRu/CNT@MO 2–x) are demonstrated to be a potential electrocatalyst for alkaline HER, exhibiting an overpotential of only …

2021年7月7日 · In this study, we propose a straightforward preparation method for Pt NPs supported on single- and multi-walled carbon nanotubes (SWCNTs and MWCNTs) at room temperature.

2019年1月25日 · Co@Pt/CNT and Pd@Pt/CNT nanocatalysts were synthesized by immersing CNT in Co and Pd precursor aqueous solution at 25 °C for 4 h, respectively, followed by the addition of 3.0 g of NaBH 4,...

2024年4月24日 · 近期， 上海交通大学蒋昆副教授和魏浩研究员 等人在碳纳米管基底上引入两种孤立的Pt-N-C配位结构，并研究了相邻N掺杂位点对ORR反应路径的影响。 作者 通过系列表征解析Pt单原子附近局部的N配位环境，并对不同途径ORR的活性进行了评测。 另外，相关原位表征和理论模拟计算揭示了两种Pt-N-C结构上*OOH中间体的不同吸附行为，从而解释了构效关系。 相关研究论文以“ Second-Shell N Dopants Regulate Acidic O2 Reduction Pathways on Isolated Pt …

2023年11月14日 · 在此，使用具有高催化效率的碳纳米管负载的铂（Pt/CNT）催化剂可控地构建具有超低Pt负载的膜电极组件（MEA）。燃料电池和加速应力测试（AST）表明，与传统商业Pt/C制备的MEA相比，具有Pt/CNT阴极催化剂层（CCL，0.1 mg Pt cm -2 ）的MEA表现出优异的 …

2018年6月4日 · 摘要: 为了提高质子交换膜燃料电池催化剂中贵金属的利用率，以碳纳米管（CNTs）负载Pt为催化剂，设计制备了具有催化剂梯度分布结构的Pt/buckypaper催化层。 利用扫描电子显微镜等多种表征手段，观察与分析了催化剂和催化层的结构及Pt含量分布，并考察了它们的电化学性能。 结果表明，Pt/CNTs催化剂中Pt颗粒在超声混酸氧化处理过的CNTs表面上分布均匀，平均直径为2.4nm。 其电化学活性表面积（ECSA）接近于商用Pt/C催化剂的值，比质量 …