Topics

PubMed Journals Articles About "Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived" RSS

14:16 EDT 14th October 2019 | BioPortfolio

Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived articles that have been published worldwide.

More Information about "Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived" on BioPortfolio

We have published hundreds of Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived news stories on BioPortfolio along with dozens of Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived Clinical Trials and PubMed Articles about Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived for you to read. In addition to the medical data, news and clinical trials, BioPortfolio also has a large collection of Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived Companies in our database. You can also find out about relevant Ultrasonic Assisted Preparation Characterization Hierarchical Porous Carbon Derived Drugs and Medications on this site too.

Showing "Ultrasonic assisted preparation characterization hierarchical porous carbon derived" PubMed Articles 1–25 of 19,000+

Ultrasonic-assisted preparation and characterization of hierarchical porous carbon derived from garlic peel for high-performance supercapacitors.

Ultrasonic-assisted impregnation is used to synthesize physically modified garlic peel-based 3D hierarchical porous carbons (PCs), and the effect on PCs is investigated by changing ultrasonic time. The results show that ultrasonic waves can effectively peel off surface attachments of the carbonized product, so that activator has a better mass transfer process and create more active sites. The connectivity of 3D pore network is enhanced as well, so the structure and electrochemical properties of garlic peel-...


Preparation of magnetic Co-Fe modified porous carbon from agricultural wastes by microwave and steam activation for mercury removal.

In this article, a magnetic cobalt-iron modified porous carbon derived from agricultural wastes by microwave and steam activation was developed to remove elemental mercury in coal-fired flue gas. The effects of operating parameters on Hg capture were discussed. Reaction mechanism and regeneration performance were also studied. Results show that the activation of microwave and steam significantly improves the pore structure of the porous carbon. The ultrasound-assisted impregnation promotes the dispersion of...

Microbial Targeted Degradation Pretreatment: A Novel Approach to Preparation of Activated Carbon with Specific Hierarchical Porous Structures, High Surface Areas, and Satisfactory Toluene Adsorption Performance.

Hierarchical porous carbon shows great potential for volatile organic compounds (VOCs) removal due to its high surface area and abundant porous framework. However, current fabrication protocols are complex and cause secondary pollution, limiting their application. Here, as a novel strategy, microbial lignocellulose decomposition as a pretreatment was introduced to fabricate hierarchical porous carbon (M-AC) from crude biomass substrate. The M-AC samples had high specific surface areas (maximum: 2290 m2·g-1...


One-pot synthesis of unique skin-tissue-bone structured porous carbons for enhanced supercapacitor performance.

Introduction of hierarchical porous structure and heteroatom in porous carbons are always effective approaches to improve the capacitive performance for supercapacitor. However, it is still a challenge to achieve the desired structure characteristics by a convenient one-step synthesis. Herein, CmimPF, an ionic liquid, was introduced in the self-assembly process of poly-benzoxazine to obtain a unique skin-tissue-bone structured hierarchical porous carbon with homogeneous N, P co-doping after carbonization. A...

Hierarchical porous carbon sheets derived on MgO template for high-performance supercapacitor applications.

Carbon-based supercapacitors have attracted plenty of academic and practical interests due to their advantages of the low cost, high power density, and superior durability. Herein, we report the facile synthesis of hierarchical porous carbon sheets (HPCSs) featured with the high specific surface area (2788 m<sup>2</sup>/g) derived from pyrrole through a combination of MgO template carbonization and KOH activation. The hierarchical pores with co-existence of micropores and mesoporous were obtaine...

A hydrothermal-carbonization process for simultaneously production of sugars, graphene quantum dots, and porous carbon from sugarcane bagasse.

A green and facile approach was proposed to simultaneously produce fermentative sugar (FS), graphene quantum dots (GQDs), and hierarchical porous carbon (HPC) from sugarcane bagasse through the hydrothermal-carbonization process. In this work, the maximum yields of FS were 35.77%, 30.54%, 1.23%, 28.52%, and 41.85% for xylose, mannose, glucose, galactose, and arabinose, respectively. The GQDs, with bright blue fluorescence, had an average diameter at 2.26 nm, and exhibited a well-defined spherical shape an...

Polytetrafluoroethylene-assisted N/F co-doped hierarchically porous carbon as a high performance electrode for supercapacitors.

In this study, we propose a novel template and chemical activation method to fabricate the nitrogen and fluorine co-doped hierarchically porous carbon with polytetrafluoroethylene-polyaniline as the precursor and KOH as the activation reagent. The key to this strategy is the utilization of polytetrafluoroethylene as an additive during the process, which not only serves as a fluorine source but also acts as a template to increase the specific surface area. Moreover, polytetrafluoroethylene disappears after c...

Edible fungus slag derived nitrogen-doped hierarchical porous carbon as a high-performance adsorbent for rapid removal of organic pollutants from water.

In this work, agricultural waste edible fungus slag derived nitrogen-doped hierarchical porous carbon (EFS-NPC) was prepared by a simple carbonization and activation process. Owing to the biodegradation and infiltrability of hyphae, this EFS-NPC possessed an ultra-high specific surface area (3342 m/g), large pore volume (1.84 cm/g) and abundant micropores and mesopores. The obtained EFS-NPC could effectively adsorb bisphenol A (BPA) with the maximal adsorption capacity of 1249 mg/g and the removal pro...

Hemp derived N-doped highly porous carbon containing Co nanoparticles as electrocatalyst for oxygen reduction reaction.

Biomass derived porous carbon was wildly used in non-precious metal carbon based electrocatalysts for ORR due to its low cost and sustainability. Here, we develop a facile route to prepare Co/N doped hemp derived highly porous carbon (Co/NHPC) as ORR electrocatalyst. The prepared Co/NHPC-90 possess 3D hierarchically porous nanostructure with high specific surface areas (1251 m g) and large pore volumes (0.99 cm g) due to the chemical activation of NaHCO, which is benefit for the mass/electron transfer a...

Lotus Seedpod-Derived Hard Carbon with Hierarchical Porous Structure as Stable Anode for Sodium-Ion Batteries.

Hard carbon material is one of the candidates with great promise as anode active material for sodium-ion batteries (SIBs). Here, new types of biomass-derived hard carbons were obtained via one-step carbonization of lotus seedpods at 1000-1400 oC, respectively. The control of carbonization temperature proved to be significant on controlling the lattice characterization of lotus seedpod-derived hard carbon. Higher temperature generally promoted the lattice graphitization and thus generated more narrowed d-int...

Cellulose carbon aerogel/PPy composites for high-performance supercapacitor.

Energy storage and conversion systems have recently attracted great interest in application of various electronic devices. Conductive polymers are promising pseudocapacitive materials for supercapacitors due to their low cost, low environmental impact, high pseudo capacitance, and ease of fabrication. However, the poor cycling stability limits their application. Here, we use cellulose as a carbon precursor to prepare a hierarchical porous carbon aerogel as a support for conductive polymer polypyrrole (PPy)....

3D Ordered Macroporous Metal-organic-frameworks (MOFs) Single Crystals Derived Nitrogen-doped Hierarchical Porous Carbon for High Performance Potassium-ion Batteries.

The biggest challenge of potassium-ion batteries (KIBs) application is to develop high performance electrode materials for accommodating the large-size potassium ions. Herein, by rational design, we carbonize three-dimensional (3D) order macroporous ZIF-8 to fabricate 3D interconnected nitrogen doped hierarchical porous carbon (N-HPC) that delivers excellent rate capability (94 mAh g-1 at 10.0 A g-1), unprecedented cycle life (157 mA g-1 after 12000 cycles at 2.0 A g-1) and high reversible capacity (292 mAh...

Microwave-assisted production of CO-activated biochar from sugarcane bagasse for electrochemical desalination.

A high-performance carbon electrode is desirable for promoting electrochemical desalination efficiency in the membrane capacitive deionization (MCDI). Sugarcane bagasse (food waste) was employed in this study to prepare hierarchically porous biochars by microwave-assisted carbonization and activation with potassium hydroxide in N or CO atmosphere under varying flow rates (100-600 cm min). The sugarcane bagasse-derived biochars activated under CO flow of 300 cm min (denoted as SBB-CO-300) possessed t...

NaCl protected synthesis of 3D hierarchical metal-free porous nitrogen-doped carbon catalysts for the oxygen reduction reaction in acidic electrolyte.

A high-performance 3D hierarchical porous metal-free N-doped carbon catalyst toward the oxygen reduction reaction (ORR) in acidic medium was successfully synthesized by employing ZnO as a mesoporous template and NaCl as both a macroporous template and a structure protective agent. The resultant improved active site density and diffusion efficiency lead to a superior ORR activity with a half-wave potential high up to 0.755 V in 0.1 M HClO4.

Chemical Blowing Strategy to Fabricate the Biomass-Derived-Carbon-Aerogel with Graphene-like Nano-Sheet Structures for High-performance Supercapacitor.

Efficient exploitation and utilization of low-cost and biomass-derived carbon materials will play an active role in the area of sustainable energy storage systems. However, the difficult morphology control and incomplete activation limits their industrial application. Inspired by the famous China Sugar-Figure Blowing handicraft, biomass-derived carbon aerogels (GCA) with 2D graphene-like thin nanosheets are fabricated by a simple chemical blowing strategy from a viscous agaric solution obtained via. the hyd...

Hierarchical MoP hollow nanospheres anchored on N, P, S co-doped porous carbon matrix as efficient electrocatalysts for hydrogen evolution reaction.

Developing efficient, nonprecious, and durable electrocatalysts with favorable nanostructures is a persistent challenge yet significant for hydrogen evolution reaction (HER). Herein, for the first time, we report a rationally designed strategy for the synthesis of hierarchical hollow MoP nanospheres anchored on N, P, S co-doped porous carbon (hs-MoP/NPSC). Importantly, the porous shell of hollow nanosphere is actually well constructed by numbers of interwoven MoP subunits, which is beneficial for exposing o...

Hierarchical Porous SWCNT Stringed Carbon Polyhedrons and PSS Threaded MOF Bilayer Membrane for Efficient Solar Vapor Generation.

Interfacial solar vapor generation is considered to be an efficient and eco-friendly technology for harvesting solar energy and providing freshwater. However, the efficient and long-term steady evaporation of seawater under 1 sun becomes a critical issue when it comes to practical applications. Based on this issue, a special double-layer structure, which contains a metal-organic-framework-derived hierarchical porous carbon membrane (HPCM) for solar absorption and a polystyrene sulfonate (PSS)@Cu (BTC) •3H...

Cobalt disulfide-modified cellular hierarchical porous carbon derived from bovine bone for application in high-performance lithium-sulfur batteries.

Improving the insulating nature of sulfur and retaining the soluble polysulfides in sulfur cathodes are crucial for realizing the practical application of lithium-sulfur batteries (LSBs). Biomass-based carbon is becoming increasingly popular for fabricating economical and efficient cathodes for LSBs owing to its unique structure. Herein, we report a facile strategy to transform bovine bone with an organic-inorganic structure into cellular hierarchical porous carbon via carbonization and KOH activation, foll...

Development of a robust ultrasonic-based sample treatment to unravel the proteome of OCT-embedded solid tumor biopsies.

An effective three step proteomic workflow is proposed to overcome the pitfalls caused by polymers present in OCT-embedded tissue during preparation for mass spectrometry analysis. First, the OCT-embedded tissue biopsies are cleaned using ethanol and water, in a sequential series of ultrasonic washes in an ultrasound bath (35 kHz ultrasonic frequency, 100% ultrasonic amplitude, 2 min ultrasonic duty time). Second, a fast ultrasonic-assisted extraction of proteins is done using an ultrasonic probe (30 kHz ul...

Hollow N-doped Carbon Polyhedrons with Hierarchically Porous Shell for Confinement of Polysulfides in Lithium-Sulfur Batteries.

Herein, hollow N-doped carbon polyhedrons with hierarchical pores were fabricated by etching ZIF-8 crystals and were first used as the host of sulfur for lithium-sulfur batteries. This host possesses both micropores and mesopores, and inner wide cavities, which enable the sulfur to effectively immerse into the polyhedrons without obstacles and simultaneously restrict the escaping of polysulfides by outer carbon shell and abundant N sites. Hence, the polyhedron host combines the physical confinement and chem...

Bioinspired Multifunctional Biomaterials with Hierarchical Microstructure for Wound Dressing.

Developing multifunctional wound dressing with desired mechanical strength is of great significance for the treatment of different types of skin wounds. Inspired by the close relationship between strength and hierarchical structure of nacre, hierarchical and porous graphene oxide-chitosan-calcium silicate (GO-CTS-CS) film biomaterials are fabricated in combination of vacuum filtration-assisted assembly and freeze-drying methods. The bioinspired hierarchical materials emulate orderly porous lamellar micron-s...

Synergistic cobalt sulfide/eggshell membrane carbon electrode.

The preparation of green, facile, and cost-effective energy storage materials remains a big challenge. In this paper, cobalt sulfide/porous carbon (Co4S3/PC) composite electrode is facilely prepared using the natural eggshell membrane (ESM) as a basal substrate. Under hydrothermal conditions, Co4S3 is grown on ESM to form Co4S3/ESM and carbonized to form Co4S3/PC. The as-synthesized Co4S3/PC composite is used as an electrode material. The carbide from the ESM shows a porous structure and high specific surfa...

N-doped porous carbon supported Ni catalysts derived from modified Ni-MOF-74 for highly effective and selective catalytic hydrodechlorination of 1,2-dichloroethane to ethylene.

Metal-organic frameworks (MOFs) have received significant attention as promising precursors or sacrificial templates in the preparation of porous carbon supported catalysts. In this study, N-doped porous carbon supported Ni catalysts (denoted as Ni/NC) were prepared using furfuryl alcohol (FA) loaded Ni-MOF-74 as the precursor followed by NHOH treatment and pyrolysis under N atmosphere. For comparison purpose, Ni catalysts supported on porous carbon (denoted as Ni/C) were also prepared by direct pyrolysis o...

Facile preparation of bioactive nanoparticle/poly(ε-caprolactone) hierarchical porous scaffolds via 3D printing of high internal phase Pickering emulsions.

Bioactive and biocompatible scaffolds possessing hierarchical porous structures and tunable multi-functional performance have attracted increasing interest in the biomedical field, especially in bone tissue engineering. In this work, we report a convenient and effective approach to construct bioactive nanoparticle/poly(ε-caprolactone) (BNPCL) scaffolds with hierarchical porous structures based on solvent evaporation of 3D printed water-in-oil high internal phase emulsion (HIPE) templates, containing hydrop...

Sustainable recycle of waste polystyrene into hierarchical porous carbon nanosheets with potential application in Supercapacitor.

Herein, polystyrene (PS) waste was selectively carbonized into mesoporous carbon nanosheets (CNS) by template method. The pore structure of the obtained CNS was further tuned by KOH activation, resulting in the formation of hierarchical porous carbon sheets with high specific surface areas of 2650 m2/g as well as good conductivity. Benefiting from these unique properties, in three electrode system, it displayed a specific capacitance of 323 F/g at 0.5A/g in 6 M KOH electrolyte, good rate capability (222 F/g...


Quick Search