A5100407578- Extraction and Separation Processes
- Recycling and Waste Management Techniques
- Graphene research and applications
- Pigment Synthesis and Properties
- Advancements in Battery Materials
- Advanced materials and composites
- Supercapacitor Materials and Fabrication
- Hydraulic and Pneumatic Systems
- Advanced Nanomaterials in Catalysis
- Graphene and Nanomaterials Applications
- Tribology and Lubrication Engineering
- Membrane Separation and Gas Transport
- Enhanced Oil Recovery Techniques
- Coal Properties and Utilization
- MXene and MAX Phase Materials
- Surface Modification and Superhydrophobicity
- Earthquake Detection and Analysis
- Electrocatalysts for Energy Conversion
- Coal and Its By-products
- Metallic Glasses and Amorphous Alloys
- Icing and De-icing Technologies
- Mineralogy and Gemology Studies
- Materials Engineering and Processing
- Carbon Dioxide Capture Technologies
- Carbon and Quantum Dots Applications
Rice University
2018-2024
Northwestern University
2023-2024
China University of Petroleum, East China
2022-2023
University of Science and Technology Beijing
2015-2023
Southwest University of Science and Technology
2023
Xi'an University of Technology
2023
Wuhan Ship Development & Design Institute
2021-2022
Yanshan University
2019
Xi'an University of Science and Technology
2017
Tongji University
2017
Triboelectric nanogenerators (TENGs) show exceptional promise for converting wasted mechanical energy into electrical energy. This study investigates the use of laser-induced graphene (LIG) composites as an exciting class triboelectric materials in TENGs. Infrared laser irradiation is used to convert surfaces two carbon sources, polyimide (PI) and cork, LIG. gives bilayer composite films high conductivity associated with LIG properties source. A LIG/PI fabricate TENGs based on...
Laser-induced graphene (LIG), a structure synthesized by one-step process through laser treatment of commercial polyimide (PI) film in an ambient atmosphere, has been shown to be versatile material applications ranging from energy storage water treatment. However, the as developed produces only 2D product on PI substrate. Here, 3D LIG foam printing is basis laminated object manufacturing, widely used additive-manufacturing technique. A subtractive laser-milling yield further refinements...
Electrochemical oxygen reduction to hydrogen peroxide is now being studied as a promising renewable and localized alternative for the traditional complex anthraquinone process. Catalysts this two-electron pathway with high selectivity are required achieve industrialization. Here, we disclose an inexpensive metal-free catalyst that synthesized from commercial carbon black (CB) one-step plasma method affordable electrochemical generation of in 100% Faradaic efficiency. This shows onset...
Abstract Nanoscale carbides enhance ultra-strong ceramics and show activity as high-performance catalysts. Traditional lengthy carburization methods for carbide syntheses usually result in coked surface, large particle size, uncontrolled phase. Here, a flash Joule heating process is developed ultrafast synthesis of nanocrystals within 1 s. Various interstitial transition metal (TiC, ZrC, HfC, VC, NbC, TaC, Cr 2 C 3 , MoC, W C) covalent (B 4 SiC) are produced using low-cost precursors. By...
Rare earth elements (REEs) are critical materials in electronics and clean technologies. With the diminishing of easily accessible minerals for mining, REE recovery from waste is an alternative toward a circular economy. Present methods suffer lengthy purifications, low extractability, high wastewater streams. Here, we report ultrafast electrothermal process (~3000°C, ~1 s) based on flash Joule heating (FJH) activating wastes to improve extractability. FJH thermally degrades or reduces...
Abstract Nanoscale metallic glasses offer opportunities for investigating fundamental properties of amorphous solids and technological applications in biomedicine, microengineering, catalysis. However, their top‐down fabrication is limited by bulk counterpart availability, bottom‐up synthesis remains underexplored due to strict formation conditions. Here, a kinetically controlled flash carbothermic reaction developed, featuring ultrafast heating (>10 5 K s −1 ) cooling rates 4 ),...
Flash Joule heating (FJH) can convert almost any carbon-based precursor into bulk quantities of graphene. This work explores the morphologies and properties flash graphene (FG) generated from carbon black. It is shown that FG partially comprised sheets turbostratic (tFG) have a rotational mismatch between neighboring layers. The remainder wrinkled resemble nongraphitizing carbon. To generate high quality tFG sheets, FJH duration 30-100 ms employed. Beyond 100 ms, time to AB-stack form...
Abstract Precious metal recovery from electronic waste, termed urban mining, is important for a circular economy. Present methods mainly smelting and leaching, suffer lengthy purification processes negative environmental impacts. Here, solvent-free sustainable process by flash Joule heating disclosed to recover precious metals remove hazardous heavy in waste within one second. The sample temperature ramps ~3400 K milliseconds the ultrafast electrical thermal process. Such high enables...
Controllable phase engineering is vital for precisely tailoring material properties since different structures have various electronic states and atomic arrangements. Rapid synthesis of thermodynamically metastable materials, especially two-dimensional with high efficiency low cost remains a large challenge. Here we report flash Joule heating (FJH) as an electrothermal method to achieve the bulk conversion transition metal dichalcogenides, MoS2 WS2, from 2H phases 1T in milliseconds. The...
Flash Joule heating (FJH), an advanced material synthesis technique, has been used for the production of high-quality carbon materials. Direct current discharge through precursors by large capacitors successfully converted carbon-based starting materials into bulk quantities turbostratic graphene FJH process. However, formation other allotropes, such as nanodiamonds and concentric materials, well covalent functionalization different allotropes process, remains challenging. Here, we report...
Plastic waste (PW) and increasing atmospheric carbon dioxide (CO2) levels are among the top environmental concerns presently facing humankind. With an ambitious 2050 zero-CO2 emissions goal, there is a demand for economical CO2 capture routes. Here we show that thermal treatment of PW in presence potassium acetate yields effective sorbent with pores width 0.7-1.4 nm capture. The to process works single or mixed streams polyolefin plastics. capacity at 25 °C 17.0 ± 1.1 wt % (3.80 0.25 mmol...
Carbon-based superoxide dismutase (SOD) mimetic nanozymes have recently been employed as promising antioxidant nanotherapeutics due to their distinct properties. The structural features responsible for the efficacy of these nanomaterials antioxidants are, however, poorly understood. Here, process-structure-property-performance properties coconut-derived oxidized activated charcoal (cOAC) nano-SOD mimetics are studied by analyzing how modifications nanomaterial's synthesis impact size, well...
Abstract The electrochemical dinitrogen (N 2 ) reduction reaction (NRR) under ambient conditions has gained significant interest as an environmentally friendly alternative to the traditional Haber–Bosch process for synthesis of ammonia (NH 3 ). However, up now, most reported NRR electrocatalysts with satisfactory catalytic activities have been hindered by large overpotential in N activation. preparation highly efficient Mo‐based electrocatalyst acidic electrolytes is demonstrated here,...
Turbostratic layers in 2D materials have an interlayer misalignment. The lack of alignment expands the intrinsic distances and weakens optical electronic interactions between adjacent layers. This introduces properties distinct from those structures with well-aligned lattices strong coupling interactions. However, direct rapid synthesis turbostratic remains a challenge owing to their thermodynamically metastable properties. Here, flash Joule heating (FJH) method achieve bulk...
Lattice-based constructs, often made by additive manufacturing, are attractive for many applications. Typically, such constructs from microscale or larger elements; however, smaller nanoscale components can lead to more unusual properties, including greater strength, lighter weight, and unprecedented resiliencies. Here, solid hollow nanoparticles (nanoframes nanocages; frame size: ~15 nanometers) were assembled into colloidal crystals using DNA, their mechanical strengths studied. Nanosolid,...
As graphene enjoys worldwide research and deployment, the biological impact, geologic degradation, environmental retention, even some physical phenomena remain less well studied. Bulk production of 13C-graphene yields a powerful route to study all these questions. Gram-scale synthesis high-quality high-purity turbostratic flash with varying amounts 13C-enrichment, from 5% 99%, is reported here. The material characterized by solid state NMR spectroscopy, Raman IR X-ray photoelectron...
The mechanism for carbon-based superoxide dismutase (SOD) nanomimetics is not known, hindering the optimization of this potentially clinically useful feature. Here we studied oxidized activated charcoal (OAC) prepared by fuming nitric acid oxidation and characterized its properties. OAC nanoparticles have sizes 5–30 nm are highly water-soluble. OACs strong SOD mimetics with a kcat = 2.1 × 105 s–1 at pH 12.7 ∼108 M–1 rate constants 8.5, having great potential in therapeutic application...