3 D Imaging and Structural Analysis of a Mesoporous‐Silica‐Body‐Supported Eggshell Cobalt Catalyst for Fischer–Tropsch Synthesis

Han, Ting; Li, Xiaopeng; Lin, Chao; Zhang, Haojie; Gao, Peng; Zhao, Yue; Du, Fanghui; Chen, Yuyun; Sun, Yuhan

doi:10.1002/cctc.201600657

Cited by 3 publications

(1 citation statement)

References 47 publications

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“…The syngas so synthetized could be used to produce synthetic petroleum via the Fischer-Tropsch process. Precisely, Han et al (2016) have recently reported a multiscale analysis of an eggshell-Co-based catalyst prepared by wetness impregnation for this synthesis.…”

Section: Synthesis Of Hydrogen/syngasmentioning

confidence: 99%

Eggshell waste as catalyst: A review

Laca

Dı́az

2017

Journal of Environmental Management

205

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Section: Synthesis Of Hydrogen/syngasmentioning

confidence: 99%

Eggshell waste as catalyst: A review

Laca

Dı́az

2017

Journal of Environmental Management

205

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Enhanced Electrocatalysis via 3D Graphene Aerogel Engineered with a Silver Nanowire Network for Ultrahigh‐Rate Zinc–Air Batteries

Han

Lin

et al. 2017

Adv Funct Materials

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(1 of 11)with structural merits and unique physicochemical properties inherited from graphene sheet has emerged as a unique class of carbon materials, holding promising potentials for diverse applications such as catalysis, environmental remediation, tissue engineering, and most importantly as energy conversion and storage devices. [1][2][3][4][5] GA has ultralow densities, extremely high porosity, good mechanical flexibility, and interconnected hierarchical porous system, while keeping 2D graphene sheets effectively interconnected and stabilized in 3D free space as well as retaining the excellent properties of few-layer graphene such as surface area, electrical conductivity, and mechanical strength. [6][7][8] Thus GAs are more applicable in real applications than individual graphene sheet.The inherent features of GA are, in particular, beneficial for electrocatalysis and energy storage devices (e.g., supercapacitor, lithium-ion battery, metal-air batteries) which features high volumetric energy density, [9][10][11] because GA introduces following three substantial impartments: (i) The hierarchical porous network with continuous meso-(2-50 nm), macro-(50-10 000 nm), and supermacro-pore (>10 µm) system that leads to a dramatic increase in the amount of liquids from the outside environment and accessible two-phase boundaries in the aerogel architecture, thus effectively eliminating the mass transport issue; [9] (ii) interconnected graphene framework facilitates effective electron/ion transport; and (iii) the graphene sheets can act as ideal supports for growing or anchoring functional metal or semiconductor nanomaterials leading to synergistic chemical coupling effects while avoiding the use of any capping agent.To date, various synthetic strategies for fabricating GA have been successfully developed and these can be generalized into two types, namely, top-down and bottom-up strategies. Topdown methods such as chemical vapor deposition (CVD) and epitaxial growth use predesigned sacrificial hard or soft template, which defines the structure morphology and nature of porosity. However, high temperature process (500-1000 °C) and tedious treatment hamper their commercialization; moreover, the degree of structure hierarchy is strictly limited. In general, successful anchoring of foreign active phases onto GA requires 3D graphene aerogel (GA) integrated with active metal or its derivatives has emerged as a novel class of multifunctional constructs with range of potential applications. However, GA fabricated by self-assembly in the liquid phase still suffers from low conductivity and poor knowledge related to spatial active phase distribution and 3D structure. To address these issues, a facile approach involving in situ integration of 1D silver nanowire (AgNW) during gelation of graphene oxide flakes is presented. AgNWs prevent the restacking of graphene sheets and act as an efficient electron highway and Ag source for deposition of ultrasmall Ag nanocrystals (AgNCs). When applied as the cathodic electrocatalyst in a zinc-...

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