CO oxidation over graphene supported palladium catalyst

Li, Yingzhi; Yu, Yue; Wang, Jianguo; Song, Jié; Li, Qiang; Dong, Mingdong; Liu, Changjun

doi:10.1016/j.apcatb.2012.05.023

Cited by 210 publications

(131 citation statements)

References 33 publications

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“…The catalytic oxidation of CO is one of the simplest and the most extensively investigated reactions in heterogeneous catalysis [1][2][3][4][5][6][7][8][9][10], and the catalytic oxidation of CO has become an important research topic over the past years. Up to now, many very effective noble metal catalysts, such as Pd [3,11], Au [4,12], Ru [13,14], and Pt [5,15] have been developed for this reaction. However, the poor stability and high cost limit the applications of these noble metal catalysts.…”

Section: Introductionmentioning

confidence: 99%

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

et al. 2016

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Abstract:Developing an efficient non-noble catalyst for CO oxidation with high catalytic activity remains a challenge for practical applications. In this work, CuO nanorods decorated reduced graphene oxide (RGO) nanocatalysts were prepared via a facile one-step hydrothermal method. The structure and morphology of the as-prepared samples were characterized by XRD, Raman spectroscopy, SEM, TEM, and X-ray photoelectron spectroscopy (XPS). The analysis results show that CuO nanorods were successfully deposited on the surface of RGO sheets with the length of 250-500 nm. The catalytic properties of the as-prepared catalysts for CO oxidation were evaluated by using a microreactor-gas chromatograph (GC) system. The as-prepared RGO-CuO nanocatalysts exhibited high activity for CO oxidation, and the 10 wt % reduced graphene oxide content catalyst can achieve CO total oxidation at 165 • C.

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Section: Introductionmentioning

confidence: 99%

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

et al. 2016

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“…Minor variations in preparation conditions can significantly influence the delicate balance of conflicting demands: high activity, high selectivity, and longterm stability. Several classic synthesis methods have been developed for preparing graphitized nanocarbon-supported catalysts, including impregnation [58][59][60][61][62], chemical vapor deposition [63][64][65], precipitation and coprecipitation [47,48,66], and liquid-phase reduction [67,68]. Owing to the high surface area and excellent physical and chemical properties of graphitized nanocarbon, highly and uniformly dispersed active metals can be achieved by traditional loading methods.…”

Section: Preparation Of Graphitized Nanocarbon-supported Catalystsmentioning

confidence: 99%

“…Liu and co-workers [59] synthesized rGO-supported Pd catalysts via the conventional impregnation and hydrogen reduction method. The higher loading amount (10 wt.% Pd/rGO) and uniformly dispersed Pd NPs (average 2.6 nm) on the rGO displayed the highest catalytic activity, leading to a complete CO conversion at 119°C.…”

Section: Oxidation Reactionsmentioning

confidence: 99%

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Huang

2017

Sci. China Mater.

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Graphitized nanocarbon materials can be an ideal catalyst support for heterogeneous catalytic systems. Their unique physical and chemical properties, such as large surface area, high adsorption capacity, excellent thermal and mechanical stability, outstanding electronic properties, and tunable porosity, allow the anchoring and dispersion of the active metals. Therefore, currently they are used as the key support material in many catalytic processes. This review summarizes recent relevant applications in supported catalysts that use graphitized nanocarbon as supports for catalytic oxidation, hydrogenation, dehydrogenation, and C-C coupling reactions in liquid-phase and gas-solid phase-reaction systems. The latest developments in specific features derived from the morphology and characteristics of graphitized nanocarbon-supported metal catalysts are highlighted, as well as the differences in the catalytic behavior of graphitized nanocarbon-supported metal catalysts versus other related catalysts. The scientific challenges and opportunities in this field are also discussed. Keywords: nanocarbon materials; graphitized carbon supports; metal catalysts; hetergeneous catalysis INTRODUCTIONCarbon combines its atoms in diverse hybridization states (sp, sp 2 , sp 3 ) to form a variety of polymorphs. These are composed entirely of carbon but have different physical structures and different names, including diamond, graphite, fullerenes, and carbines, among others [1][2][3][4][5]. Because these various and versatile allotropes produce materials with a large range of properties, carbon materials can be used in a number of technological processes, including high-tech catalytic ones [6][7][8][9][10].In heterogeneous catalysis, carbon material plays wellestablished and important roles in a wide range of applications, both as catalyst in its own right and as a unique support material [11][12][13][14][15]. The chemical stability of carbon supports in some specifically aqueous phase biomass conversion surpasses that of metal oxide materials; in addition, carbon materials present other common and key advantages as support materials for catalysis [1,5]. From the point of physical structure, porous carbon can be prepared in different forms (granules, cloth, fibers, pallets, etc.). Due to its chemical properties, carbon structure is resistant to both acidic and basic media. The structure of carbon is stable at high temperature (even above 1023 K under inert atmosphere). The hydrophilic/ hydrophobic nature of carbon can be easily modified. Active metals on the support can be easily reduced. For the purposes of industrial economy and environment, the active phase can be easily recovered. Conventional carbon supports are lower-cost and more easily available than other conventional supports. Although several kinds of carbon materials have been studied, active carbon (AC) [12,[16][17][18][19] and, to a lesser extend, carbon black [20][21][22][23] have long been the most commonly used carbon supports. AC is an amorphous solid prepa...

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“…6,8 Graphene has also attracted a lot of attention as a single layer of sp 2 -bonded carbon with zero band gap compacted into a two-dimensional honeycomb structure. [9][10][11] Among the nanosized composites, graphene can work as a high-performance supporting material because of its two-dimensional structure; therefore, it has various applications in fields like photocatalysis, sensing, and optics. [5][6][7]9,[11][12][13][14][15][16][17] Nanosized metal particles can be dispersed homogeneously on the plane of graphene, and charge transfer at the interface of these hybrid materials can provide a synergistic effect inducing properties that are dissimilar from those of each individual component.…”

Section: Introductionmentioning

confidence: 99%

“…[9][10][11] Among the nanosized composites, graphene can work as a high-performance supporting material because of its two-dimensional structure; therefore, it has various applications in fields like photocatalysis, sensing, and optics. [5][6][7]9,[11][12][13][14][15][16][17] Nanosized metal particles can be dispersed homogeneously on the plane of graphene, and charge transfer at the interface of these hybrid materials can provide a synergistic effect inducing properties that are dissimilar from those of each individual component. 13,[18][19][20][21] Therefore, in this study, the photocatalytic activity of nanosized palladium-graphene composites was evaluated in the degradation of organic dyes methylene blue (MB), methyl orange (MO), rhodamine B (RhB), and brilliant green (BG) using a UV-vis spectrophotometer under ultraviolet light at 254 nm.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Nanosized Palladium-Graphene Composites and Photocatalytic Degradation of Various Organic Dyes

Kim¹,

Ko²

2016

Elastomers and Composites

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Nanosized palladium particles were synthesized using palladium(II) chloride, trisodium citrate dihydrate, and sodium borohydride under stirring condition. Nanosized palladium-graphene composites were prepared from palladium nanoparticles, and graphene was enclosed with polyallylamine under stirring condition for 1 h followed by ultrasonication for 3 h. Nanosized palladium-graphene composites were heated in an electric furnace at 700 °C for 2 h and characterized by X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. UV-vis spectrophotometry was used to evaluate the nanosized palladium-graphene composites as a catalyst in the photocatalytic degradation of various organic dyes such as methylene blue, methyl orange, rhodamine B, and brilliant green under ultraviolet light at 254 nm.

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CO oxidation over graphene supported palladium catalyst

Cited by 210 publications

References 33 publications

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

CuO Nanorods-Decorated Reduced Graphene Oxide Nanocatalysts for Catalytic Oxidation of CO

Graphitized nanocarbon-supported metal catalysts: synthesis, properties, and applications in heterogeneous catalysis

Preparation of Nanosized Palladium-Graphene Composites and Photocatalytic Degradation of Various Organic Dyes

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