A5033267290- Adsorption and biosorption for pollutant removal
- Rock Mechanics and Modeling
- Nanomaterials for catalytic reactions
- Geomechanics and Mining Engineering
- Graphene and Nanomaterials Applications
- Tailings Management and Properties
- Metal-Organic Frameworks: Synthesis and Applications
- Grouting, Rheology, and Soil Mechanics
- Aerogels and thermal insulation
- Hydrogels: synthesis, properties, applications
- Membrane Separation Technologies
- Geoscience and Mining Technology
- Carbon and Quantum Dots Applications
- Dye analysis and toxicity
- Advanced Sensor and Energy Harvesting Materials
- Covalent Organic Framework Applications
- Copper-based nanomaterials and applications
- Electrochemical sensors and biosensors
- Pigment Synthesis and Properties
- Supercapacitor Materials and Fabrication
- Geophysical and Geoelectrical Methods
- Concrete and Cement Materials Research
- Surface Modification and Superhydrophobicity
- Graphene research and applications
- Mineral Processing and Grinding
Qingdao University
2021-2023
China University of Mining and Technology
2019-2021
A novel gelatin-based functionalized carbon nanotubes@metal-organic framework (F-CNTs@MOF@Gel) adsorbent was prepared by the green and simple method for adsorption of methylene blue (MB). Cu-BTC (also known as HKUST-1) selected MOF type. F-CNTs@Cu-BTC particles were fixed gelatin, thus avoiding secondary pollution nanomaterial to environment. CNTs used connecting skeleton make more effective sites exposed on surface internal pore structure adsorbent. In this paper, scanning electron...
For nanomaterials, such as GO and MOF-525, aggregation is the main reason limiting their adsorption performance. In this research, Alg-Cu@GO@MOF-525 was successfully synthesized by in-situ growth of MOF-525 on Alg-Cu@GO. By dispersing graphene oxide (GO) with copper alginate (Alg-Cu) three-dimensional structure, grown to reduce aggregation. The measured specific surface area high 807.30 m2·g-1, which very favorable for adsorption. material has affinity a variety pollutants, its performance...
In this study, composite hydrogels were prepared using a simple synthetic technique to adsorb methylene blue (MB) from water. The hydrogel comprised potassium persulfate (KPS) as the initiator, N,N'-methylene bisacrylamide crosslinking agent, and sodium hydroxide (NaOH) activator. It was employed MB at different concentrations morphology properties of PUL/PAM/GO composites characterized through thermogravimetric analysis, Fourier transform infrared spectroscopy, scanning electron microscopy....
It can be difficult to remove dark methylene blue (MB) from water effectively. The use of sodium alginate and bentonite (Ben) as the matrix produced a displacement reaction that occurred in cobalt chloride, which allowed Ben successfully encapsulated (CA). Finally, vacuum freeze-drying method was used prepare low-cost composite CA/Ben aerogel for adsorbing MB aqueous solutions. In addition scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy,...
In order to remove tetracycline (TC) from sewage more effectively, the adsorption performance of TC on alginate composite aerogel beads containing carbon nanomaterials was studied systematically. Carboxylated functionalized nanotubes (F-CNTs)@Cu-based metal-organic framework (Cu-BTC) nanomaterial composites (F-C) were prepared by a hydrothermal method, and F-C powders coated fixed macromolecular polymer copper (CA). Then, F-CNTs@Cu-BTC@CA (F-C-CA) vacuum freeze-drying method. The new...
Egg white protein is a non-toxic and biodegradable biopolymer that forms gel easily via simple thermal denaturation treatment. A novel aerogel on the basis of egg crosslinked with graphene oxide was prepared facile freeze-drying method. The structure physicochemical characteristics aerogels were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, thermogravimetric analysis (TGA) Brunauer-Emmett-Teller (BET) analysis. adsorption properties...
In this paper, the physicochemical properties, surface charge, and crystal defects of MIL-88A (Al) were controlled by adjusting ratio metal ligands temperature in synthetic system without addition surfactants. The adsorption properties different crystals for Congo red (CR) studied. Among them, (Al)-130 (Al)-d have best properties. maximum capacities are 600.8 1167 mg · g–1, respectively. Compared with (Al)-130, performance was increased 94.2%, rate about 4 times. It can be seen that...
In order to better study the movement principles of overlying strata during backfill mining, we established a thin plate model on an elastic foundation with boundary main roof. And by finite difference method, variation roof’s principal moments and maximum subsidence ω 0 coefficient k 1 coal seam, 2 body, thickness h , Young’s modulus E Poisson’s ratio μ roof are calculated studied. Using these calculations, were able determine that had three bending moment extreme points, including M zz in...
To reduce the filling cost of high-water backfilling material (HWBM) in mining backfill and improve recycling utilization industrial waste such as coal fly ash. The ultra-fine ash (UFA) was added to HWBM a partial replacement this work. Therefore, series experiments were performed investigate effect UFA on mechanical properties at different curing conditions, then hydration mechanism blended with analyzed by XRD SEM method. result indicates that strength decreased increasing dosages, but...
Abstract A hydrogel (Chitosan@UiO‐67) adsorbent was prepared by a green and simple method for the adsorption of Congo red. SEM, FT‐IR, TGA, BET, XRD were used to characterize CS@UiO‐67 hydrogel. The effects temperature, initial CR concentration, contact time, pH, dose on properties studied in batch experiments. FT‐IR analysis showed that hydroxyl group chitosan had covalent coordination with Zr, which enhanced stability after complexation UiO‐67. As experiment, maximum capacity calculated...
Abstract In this paper, cobalt alginate/graphene oxide (CA/GO) aerogel composites were prepared by wet spinning and vacuum freezing. The ion only ion‐pairs with the carboxyl in alginate, other groups such as hydroxyl not combined ions, generating free hydroxyl, thus improving adsorption performance recyclability of composite material. properties CA/GO aerogels gradually improved increase pH. maximum capacity at 298 K was 294.18 mg.g −1 , process methylene blue (MB) on conformed to Langmuir...
Abstract To promote the engineering applications of high water backfill materials (HWBM) in mining, a series experiments are performed to investigate effects direct current (DC) electric field on mechanic properties and electrical resistivity HWBMs. Based X-ray diffraction (XRD) scanning electron microscopy (SEM) investigations, influence electrochemical treatment hydration products microstructure HWBM was studied. The results show that peak strength, elastic modulus, deformation modulus...
The surrounding rock of the roadway under double gobs in lower coal seams is partially damaged by mining upper seam and stress superimposition stepped pillars. What worse, layer roof collapse gangue gobs, which makes anchor cable unable to reliable bearing layer, so anchoring performance weakened. actual drawing forces bolt are only approximately 50 kN 80 kN, respectively. develops cracks large deformations with increasing difficulty achieving safe ventilation. In view above problems, taking...