Freezing synthesis of Pt/3D GNs (C) composites as efficient electrocatalysts for methanol oxidation

Xie, Yixin; Li, Zhongshui; Wang, Yanli; Xu, Shuhong; Lin, Shen

doi:10.1007/s10800-018-1156-8

Cited by 4 publications

(2 citation statements)

References 37 publications

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“…Methanol has a wide range of sources, which can be produced from coal, oil, natural gas, and biomass; therefore, it can be mass-produced. It has unique physical and chemical properties, which is conducive to the full combustion of fuel and reduces emissions [4]. Traditional diesel is the most commonly used highly active fuel in RCCI engines.…”

Section: Introductionmentioning

confidence: 99%

On the Design and Optimization of a Clean and Efficient Combustion Mode for Internal Combustion Engines through a Computer NSGA-II Algorithm

Shu¹,

Ren²

2020

Fluid Dynamics &Amp; Materials Processing

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In order to address typical problems due to the huge demand of oil for consumption in traditional internal combustion engines, a new more efficient combustion mode is proposed and studied in the framework of Computational Fluid Dynamics (CFD). Moreover, a Non-dominated Sorting Genetic Algorithm (NSGA-II) is applied to optimize the related parameters, namely, the engine methanol ratio, the fuel injection time, the initial temperature, the Exhaust Gas Re-Circulation (EGR) rate, and the initial pressure. The so-called Conventional Diesel Combustion (CDC), Homogeneous Charge Compression Ignition (HCCI) and the Reactivity Controlled Compression Ignition (RCCI) combustion modes are compared. The results show that RCCI has a higher methanol ratio and an earlier injection timing with moderate EGR rate and higher initial pressure. The initial temperature increases as the methanol ratio increases. In comparison, CDC has the lowest hydrocarbon and CO emissions and the highest combustion efficiency. At different crankshaft rotation angles corresponding to 50% of the combustion amount (CA50), the combustion temperature and boundary layer temperature of HCCI change significantly, while those of RCCI undergo limited variations. At the same CA50, the exergy losses of HCCI and RCCI are lower than that of the CDC. On the basis of these findings, it can be concluded that the methanol/diesel RCCI engine can be used to obtain a clean and efficient combustion process, which should be regarded as a promising combustion mode.

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Section: Introductionmentioning

confidence: 99%

On the Design and Optimization of a Clean and Efficient Combustion Mode for Internal Combustion Engines through a Computer NSGA-II Algorithm

Shu¹,

Ren²

2020

Fluid Dynamics &Amp; Materials Processing

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“…The additional diffraction peak at 2θ of about 28.4 • corresponds to the (121) plane of Bi 2 O 3 [27] (curve a, c), indicating that the bismuth species in the composite mainly exists in the form of Bi 2 O 3 . Furthermore, the peak at 24.0 • in curve b was assigned to the (002) crystal plane of carbon in graphene [28].…”

mentioning

confidence: 99%

The Modification of Pt/Graphene Composites with Oxophilic Metal Bi (Bi2O3) and Its Dual-Functional Electro-Photo Catalytic Performance

Duan

et al. 2018

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The Pt-Bi (Bi2O3)/GNs (PVP) composite was synthesized using aqueous solution synthesis and characterized by transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), inductively coupled plasma-atomic emission spectroscopy (ICP-AES) and Raman spectroscopy. It was found that the water-soluble polyvinyl pyrrolidone (PVP) helped to tune the particles’ morphology, resulting in a uniform distribution of Pt-Bi nanoclusters on the surface of graphene. Cyclic voltammetry, chronoamperometry and linear scanning voltammetry (LSV) were used to study the electrocatalytic properties towards a methanol oxidation reaction (MOR) and an oxygen reduction reaction (ORR). The results show that Pt-Bi (Bi2O3)/GNs (PVP) exhibits superior bifunctional electrocatalytic properties for both MOR and ORR, mainly due to the introduction of oxophilic Bi species and the better dispersion of the Pt-Bi nanoclusters. In particular, the electro-photo catalysis for both MOR and ORR occurred under simulated sunlight irradiation due to the existence of photo-responsive Bi species, which is helpful for converting solar energy into electric energy during a traditional electrocatalytic process.

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3D Graphene for Metal–Air Batteries

2023

Carbon Nanostructures

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Freezing synthesis of Pt/3D GNs (C) composites as efficient electrocatalysts for methanol oxidation

Cited by 4 publications

References 37 publications

On the Design and Optimization of a Clean and Efficient Combustion Mode for Internal Combustion Engines through a Computer NSGA-II Algorithm

On the Design and Optimization of a Clean and Efficient Combustion Mode for Internal Combustion Engines through a Computer NSGA-II Algorithm

The Modification of Pt/Graphene Composites with Oxophilic Metal Bi (Bi2O3) and Its Dual-Functional Electro-Photo Catalytic Performance

3D Graphene for Metal–Air Batteries

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