One-step synthesis of carbon-supported foam-like platinum with enhanced activity and durability. Issue 43 (19th October 2015)

• Record Type: Journal Article
• Authors: Li, Shushuang; Li, Huanqiao; Zhang, Yansheng; Garcia, Robert M.; Li, Jia; Xie, Yan; Yin, Jie; Li, Mingrun; Wang, Junhu; Shelnutt, John A.; Zhang, Tao; Song, Yujiang
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 43(2015)
• Page Start: 21562
• Page End: 21568
• Publication Date: 2015-10-19
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c3ta10406k
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : Carbon black localized in-between liposomal bi-layers provides a unique supporting–templating bifunctional reaction environment that led to one-step synthesis of shaped Pt foam/C with enhanced activity and durability for oxygen reduction. Abstract : Carbon black nanoparticles localized in-between liposomal bi-layers provide a unique reaction environment that permits one-step synthesis of carbon-supported foam-like platinum (Pt foam/C) in aqueous solution under ambient conditions. The obtained Pt foam/C was readily purified by simple washing with water and chloroform at room temperature. Unlike commercial Pt/C composed of quasi-spherical nanoparticles, Pt foam/C consists of convoluted dendritic nanosheets. Interestingly, Pt foam/C demonstrated both improved durability and activity toward oxygen reduction reaction (ORR). The improved durability is because of the formation of metastable nano-holes among dendritic branches of Pt foam/C under ripening, preserving the surface area. The activity enhancement of Pt foam/C can be attributed to predominantly exposed Pt {1, 1, 0} planes that possess the highest ORR activity among all low-indexed Pt crystalline planes. Nano-scale Pt primarily enclosed by {1, 1, 0} planes has not been reported previously.