title: Ultrathin Coating of Confined Pt Nanocatalysts by Atomic Layer Deposition for Enhanced Catalytic Performance in Hydrogenation Reactions.
abstract: Metal-support interfaces play a prominent role in heterogeneous catalysis. However, tailoring the metal-support interfaces to realize full utilization remains a major challenge. In this work, we propose a graceful strategy to maximize the metal-oxide interfaces by coating confined nanoparticles with an ultrathin oxide layer. This is achieved by sequential deposition of ultrathin Al2 O3 coats, Pt, and a thick Al2 O3 layer on carbon nanocoils templates by atomic layer deposition (ALD), followed by removal of the templates. Compared with the Pt catalysts confined in Al2 O3 nanotubes without the ultrathin coats, the ultrathin coated samples have larger Pt-Al2 O3 interfaces. The maximized interfaces significantly improve the activity and the protecting Al2 O3 nanotubes retain the stability for hydrogenation reactions of 4-nitrophenol. We believe that applying ALD ultrathin coats on confined catalysts is a promising way to achieve enhanced performance for other catalysts.
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.|University of Chinese Academy of Sciences, Beijing, 100039, China.
authors.forename: Meihua
authors.initials: M
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China. gaozhe@sxicc.ac.cn.
authors.forename: Zhe
authors.initials: Z
authors.lastname: Gao
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
authors.forename: Bin
authors.initials: B
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
authors.forename: Huimin
authors.initials: H
authors.lastname: Yang
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Qiao
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.
authors.forename: Shuai
authors.initials: S
authors.lastname: Chen
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.|University of Chinese Academy of Sciences, Beijing, 100039, China.
authors.forename: Huibin
authors.initials: H
authors.lastname: Ge
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China.|University of Chinese Academy of Sciences, Beijing, 100039, China.
authors.forename: Jiankang
authors.initials: J
authors.lastname: Zhang
authors.affiliation: State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan, 030001, China. qinyong@sxicc.ac.cn.
authors.forename: Yong
authors.initials: Y
authors.lastname: Qin
mesh_terms: D000537:Aluminum Oxide / Q000737:chemistry; D002384:Catalysis; D006865:Hydrogenation; D053768:Metal Nanoparticles / Q000737:chemistry*; D043942:Nanotubes / Q000737:chemistry; D009596:Nitrophenols / Q000737:chemistry; D010984:Platinum / Q000737:chemistry*; D013056:Spectrophotometry, Ultraviolet; D013696:Temperature
chemical_list: D009596:Nitrophenols; D010984:Platinum; D000537:Aluminum Oxide; C024836:4-nitrophenol
keywords: atomic layer deposition; confined catalyst; hydrogenation reactions; interfaces; ultrathin coating