A5103120673- Concrete and Cement Materials Research
- Zeolite Catalysis and Synthesis
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Mesoporous Materials and Catalysis
- Metal-Organic Frameworks: Synthesis and Applications
- Magnesium Oxide Properties and Applications
- Drilling and Well Engineering
- Crystallography and molecular interactions
- Concrete Corrosion and Durability
- Hydraulic Fracturing and Reservoir Analysis
- Layered Double Hydroxides Synthesis and Applications
- Catalytic Processes in Materials Science
- Vibrio bacteria research studies
- Innovative concrete reinforcement materials
- Identification and Quantification in Food
- Supercapacitor Materials and Fabrication
- Covalent Organic Framework Applications
- Electrocatalysts for Energy Conversion
- Advanced Cellulose Research Studies
- Biosensors and Analytical Detection
- Geotechnical and Geomechanical Engineering
- Coal Properties and Utilization
- Polymer composites and self-healing
- High Temperature Alloys and Creep
Central South University
2008-2024
Anhui Science and Technology University
2024
Anhui University of Science and Technology
2024
Nanjing Institute of Technology
2024
Beijing University of Chemical Technology
2023
Zhejiang Sci-Tech University
2021-2023
ShanghaiTech University
2018-2022
China University of Mining and Technology
2021
Northeast Forestry University
2020
China University of Geosciences
2014-2017
In the hydrothermal synthesis of highly ordered mesoporous silica material SBA-15, strong acid is typically required to catalyze hydrolysis and condensation species. Meanwhile, under strongly acidic conditions, transition metal ions, e.g., iron are difficult incorporate into SBA-15 because facile dissociation Fe–O–Si bonds. Here, we demonstrate an acid-free green synthetic strategy for Fe-SBA-15 with assistance hydroxyl free radicals that generated by physical or chemical methods. The...
Abstract Shape control has realized huge success for developing efficient Pd/Pt‐based nanocatalysts, but the of Ru‐based nanocrystals remains a formidable challenge due to inherent anisotropy in hexagonal closed‐packed nanocrystals. Herein, class unique RuCo nanoscrews (NSs) water electrosplitting is successfully synthesized with rough surfaces and exposure steps edges. Those high‐index faceted NSs show superior performance overall electrosplitting, where low cell voltage 1.524 V (@ 10 mA cm...
Developing high-performance catalysts for fuel cell catalysis is the most critical and challenging step commercialization of technology. Here 1D trimetallic platinum-iron-cobalt nanosaws (Pt3 FeCo NSs) with low-coordination features are designed as efficient bifunctional electrocatalysts practical catalysis. The oxygen reduction reaction (ORR) activity Pt3 NSs (10.62 mA cm-2 4.66 A mg-1Pt at 0.90 V) more than 25-folds higher that commercial Pt/C, even after 30 000 voltage cycles. Density...
Natural materials often inspire various strategies in science, and these concepts have been extensively applied to enhance the compressibility of carbon aerogels (CAs). Herein, a novel combination directed freeze casting dual activation is adopted prepare compressible mesoporous CAs which imitate vertical channel porous structure wood. The orderly growth ice crystals generates channels cellulose that high strength-to-weight ratio, giving material supercompressibility (up 90% strain) low...
Achieving effective control over microbial contamination necessitates the precise and concurrent identification of numerous pathogens. In this research, we have devised a remarkably sensitive duplex droplet digital PCR (dddPCR) reaction system to simultaneously detect Pseudomonas aeruginosa (P. aeruginosa) fragi fragi). Employing comparative genomics, identified four genes P. fragi. By specific analysis, RS22680 gene was selected as detection target LasR chosed aeruginosa, which were applied...
A quasi-pure CH polymorph of microporous zeolite beta, named ECNU-36, was obtained as a highly crystalline silicate using 1,5-bis(tetramethylimidazolium) hydroxide organic structure-directing agent (OSDA) in fluoride media. An appropriate concentration free the synthetic mother liquor crucial to purify -phase. The framework structure ECNU-36 consists (>95 %) and B, elucidated by combination PXRD data, DIFFaX simulation, EDT, HRTEM techniques. For first time, beta directly confirmed solved...
The increasing demands for catalysts with improved accessibility to reactants call a rational synthesis of nanosized zeolites. Herein we developed facile approach highly crystalline MFI-type (Silicalite-1 and ZSM-5) beta zeolites variable Si/Al ratios high yield. This was achieved by kinetically decoupling the nucleation from growth process in concentrated gel system via temperature-staged treatment. carefully controlled low-water environment ensures only stage I (aging), hence generation...
Abstract Precisely controlled crystal growth endows zeolites with special textural and catalytic properties. A nanosheet mordenite zeolite a thickness of ca. 11 nm, named as MOR‐NS, has been prepared using well‐designed gemini‐type amphiphilic surfactant bifunctional structure‐directing agent (SDA). Its benzyl diquarternary ammonium cations structurally directed the formation MOR topology, whereas long hydrophobic hexadecyl tailing group prevented extensive along b axis. This kind orientated...
Nonasil (NON-type framework) zeolite, having inner large cages but only 6-ring (R) apertures, is recognized as a nonporous material without practical application values catalysts or adsorbents. A novel bottom-up structural construction strategy assisted with well-designed Gemini-type surfactant proposed to "open" the non cages, constructing two NON-related structures accessible and stable acid sites. The obtained derivant (named ECNU-27) possessed hierarchical porosity short-range ordered...
Feasible strategies are desirable for preparing zeolitic nanosheets with opener porosities and more accessible active sites. Highly delaminated FER (ECNU-17) unit-cell scale thickness were hydrothermally synthesized using a simple, small, low-cost imidazole molecule as the sole organic structure-directing agent (OSDA). The single OSDA directed formation of framework, while π–π stacked OSDAs terminated growth perpendicular to zeolite sheets. ECNU-17 nanosheet is only 2.9 nm in thickness,...
The purpose of this study is to improve the cementing quality shale gas well by mud cake solidification, as provide better annular isolation for its hydraulic fracturing development. Based on self-established experimental method and API RP 10, effects solidifiers shear strength at cement-interlayer interface (SSCFI) were evaluated. After curing 3, 7, 15 30 days, SSCFI was remarkably improved 629.03%, 222.37%, 241.43% 273.33%, respectively, compared with original technology. Moreover,...
Introduction of meso-/macropores into the intrinsic microporous framework zeolites has raised substantial interest in catalytic reactions with bulky reactants. Herein, we report formation secondary Silicalite-1 zeolite by a solvent-free mechanochemical grinding process. The strategy allows preservation high crystallinity and microporosity pristine zeolite, generation mesopores at room temperature marcopores higher temperatures. roles tetrapropylammonium bromide (TPABr) ammonium fluoride...
The encapsulation of metal–organic framework particles in either polystyrene or silica nanocapsules allows an situ degradation–reconstruction cycle to be performed up 10 times while maintaining the sample morphology and sorption properties.
The shear resistance at cement-formation interface (CFI) in coalbed methane (CBM) well has a great influence on the success rate of hydraulic fracturing for CBM reservoir. In this paper, mud cake to agglomerated (MTA) method was used improve CFI and reduce risk fluid channeling after fracturing. experimental results showed that modifier (MCM) had slight effect drilling rheological properties while MCM addition. When curing time 2, 3, 15 90 days, increased by 5.30, 4.32, 3.63 3.15 times,...
The phase precipitation behavior of a new type nickel based superalloy cast with low cobalt was studied by using JMatPro and differential scanning calorimetry, the microstructure composition ingot were compared actual ingot. results show that structure alloy mainly includes γ(mateix),γ´,σ,μ,carbides(MC,M6C,M23C6) γ+γ′ eutectic structure(volume fraction about 13.9%).Positive segregation occurs in Ta Hf during solidification. initial melting point, final point γ-phase remelting temperature are...