KMS Chongqing Institute of Green and Intelligent Technology, CAS
| Bifunctional Nanocatalyst Based on Three-Dimensional Carbon Nanotube-Graphene Hydrogel Supported Pd Nanoparticles: One-Pot Synthesis and Its Catalytic Properties | |
Zhang, Zheye1; Sun, Tai1,3 ; Chen, Chen1; Xiao, Fei1; Gong, Zheng2; Wang, Shuai1
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| 2014-12-20 | |
| 摘要 | We reported the development of a new type of bifunctional nanocatalyst based on three-dimensional (3D) macroscopic carbon nanotube (CNT)-graphene hydrogel (GH) supported Pd nanoparticles (i.e., Pd-CNT-GH) and explored its practical application in catalytic reduction of p-nitrophenol to p-aminophenol. The 3D Pd-CNT-GH was synthesized by a facile one-pot self-assembled approach through hydrothermal treatment of a mixed aqueous precursor solution of PdCl42-, CNT, and graphene oxide (GO). Under the appropriate condition, the spontaneous redox reaction between precursor PdCl42- and CNT-GO as well as the self-assembly of macroscopic CNT-GH occurs simultaneously, leading to the formation of 3D Pd-CNT-GH. Because of the unique structural and functional properties of different components in the nanocatalyst and the synergistic effect between them, the as-prepared Pd-CNT-GH exhibits superior catalytic performance toward the reduction of p-nitrophenol to p-aminophenol, with 100% conversion within 30 s, even when the content of Pd in it is as low as 2.98 wt %. Moreover, after 20 successive cycles of reactions, the reaction time still keeps within 46 s. Therefore, the rational design of 3D macroscopic graphene-based nanohybrid material supported highly catalytically active nanoparticles, combined with the facile one-pot self-assembled strategy, provide a universal platform to fabricate desired 3D multifunctional nanomaterials that can be used in a broad range of catalysis, environmental protection, energy storage and conversation, drug delivery, chemical and biological sensing, and so forth. |
| 关键词 | palladium nanoparticles carbon nanotube graphene hydrogel one-pot self-assembly catalysis p-nitrophenol |
| DOI | 10.1021/am505911h |
| 发表期刊 | ACS APPLIED MATERIALS & INTERFACES
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| ISSN | 1944-8244 |
| 卷号 | 6期号:23页码:21035-21040 |
| 通讯作者 | Wang, S (reprint author), Huazhong Univ Sci & Technol, Sch Chem & Chem Engn, Wuhan 430074, Peoples R China. |
| 收录类别 | SCI |
| WOS记录号 | WOS:000346326600057 |
| 语种 | 英语 |
