Facile synthesis of metal nanoparticles decorated magnetic hierarchical carbon microtubes with polydopamine-derived carbon layer for catalytic applications. Issue 46 (12th November 2018)

• Record Type: Journal Article
• Authors: Miao, Teng; Zheng, Jing; Wang, Jianping; Xu, Jingli; Alharbi, Njud S.; Zhang, Min
• Is Part Of: Dalton transactions. Volume 47:Issue 46(2018)
• Page Start: 16578
• Page End: 16586
• Publication Date: 2018-11-12
• Subjects: Chemistry, Inorganic -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Chemistry, Inorganic -- Periodicals; 546.05
• DOI: 10.1039/c8dt03495h
• Languages: English
• ISSNs: 1477-9226

Abstract

Abstract : Herein, we present a facile method to fabricate a hybrid material of metallic NPs (Cu, Ni, Co) uniformly distributed on magnetic carbon hollow microtubes with a carbon layer derived from polydopamine. Abstract : It is highly desirable but challenging to fabricate a unique hybrid material comprising nanosized copper/cobalt/nickel nanoparticles (NPs) uniformly distributed on magnetic supports. Herein in this work, hierarchical magnetic metal silicate hollow microtubes were prepared using silica coated magnetic N-doped carbon microtubes (NCMTs@Fe3 O4 @SiO2 ) as a chemical template; then polydopamine (PDA) was employed to coat onto magnetic metal silicate carbon microtubes (NCMTs@Fe3 O4 @CuSNTs/CoSNTs/NiSNTs), which can be carbonized to form hierarchical hybrid composites with uniformly-dispersed metallic copper/cobalt/nickel NPs embedded in PDA-derived carbon layers (NCMTs@Fe3 O4 @SiO2 @C/Cu–Co–Ni). Owing to its hierarchical structure, large specific surface area as well as the high density of metal NPs, the resultant NCMTs@Fe3 O4 @SiO2 @C/Ni–Co–Cu could be applied as catalysts towards the reduction of 4-nitrophenol (4-NP). Furthermore, the NCMTs@Fe3 O4 @SiO2 @C/Ni–Co–Cu catalysts could be easily collected and separated by applying an external magnetic field. In particular, it was found that NCMTs@Fe3 O4 @SiO2 @C/Ni exhibited ultra-high catalytic activity on 4-NP reduction in comparison with Cu and Co supported catalysts. In addition, this unique hierarchical structure combined with magnetic recyclability make NCMTs@Fe3 O4 @SiO2 @C/Ni a highly promising candidate for diverse applications.