Dengpan Nie

ORCID: 0000-0003-0763-7197
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About
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Research Areas
  • Concrete and Cement Materials Research
  • Metal Extraction and Bioleaching
  • Gas Sensing Nanomaterials and Sensors
  • Extraction and Separation Processes
  • Minerals Flotation and Separation Techniques
  • Metallurgical Processes and Thermodynamics
  • Recycling and utilization of industrial and municipal waste in materials production
  • Calcium Carbonate Crystallization and Inhibition
  • ZnO doping and properties
  • Magnesium Oxide Properties and Applications
  • Bone Tissue Engineering Materials
  • Geochemistry and Elemental Analysis
  • Innovative concrete reinforcement materials
  • Analytical Chemistry and Chromatography
  • Analytical Chemistry and Sensors
  • Recycling and Waste Management Techniques
  • Mine drainage and remediation techniques
  • Crystallization and Solubility Studies
  • Advanced Sensor and Energy Harvesting Materials
  • Tailings Management and Properties
  • Chemical and Physical Properties in Aqueous Solutions
  • Recycled Aggregate Concrete Performance
  • Synthesis and Reactivity of Heterocycles
  • Fluoride Effects and Removal
  • Bauxite Residue and Utilization

Guizhou Minzu University
2018-2025

Guizhou University
2018-2019

Guizhou Electric Power Design and Research Institute
2008-2018

Guizhou Electromechanical Research and Design Institute
2018

Institute of Chemical Engineering
2007

The present study aimed to understand the pyrolysis characteristics of phosphorus tailings and promote resource utilization tailings. Thermogravimetry was combined with Fourier transform infrared spectroscopy-Raman spectroscopy-mass spectrometry (TG-FTIR-RS-MS) kinetic models investigate possible reaction mechanisms during changes in release volatiles. results showed that process occurred three different stages. First, small amounts adsorbed water were removed, organic matter decomposed....

10.1039/d3ra01300f article EN cc-by-nc RSC Advances 2023-01-01

Abstract Phosphogypsum is widely used as a filler. However, gypsum fillers exhibit poor water resistance, compromising the performance of subsequent products. To address this issue, we modified α‐hemihydrate phosphogypsum (α‐HH) with myristic acid (ΜΑ), low surface energy material to prepare super hydrophobic (SHP) surfaces. The MA concentration, temperature, and modification time were optimized using Box‐Behnken experimental design method. properties, microstructure, thermal stability...

10.1002/slct.202300593 article EN ChemistrySelect 2023-05-15

The dynamic growth of MOCVD-grown ZnO thin films under temperature effect was systematically investigated by a numerical approach using computational fluid dynamics (CFD) technique. A three-dimensional (3D) reactor-scale model developed to determine the rate and uniformity film in range 593 K 713 K. mixed-convection flow heat transfer inside reactor chamber were assessed. results showed that as increased, thickness increased initially before decreasing. At 673 K, highest deposition with...

10.3390/coatings12121991 article EN Coatings 2022-12-19

Total vaporization (TV) headspace (HS) gas chromatography (GC) is reported for the determination of ethanol in flavor oil microcapsules. Fifteen microliters sample were placed a vial and near-complete mass transfer from liquid phase to vapor was obtained within one minute at 105 °C. This approach allowed by chromatography. Under optimal conditions, performance this method investigated, showing good linearity low limit quantification equal 8.95 mg/L. The relative standard deviation less than...

10.1080/00032719.2022.2134888 article EN Analytical Letters 2022-10-21

The gas-phase reaction pathways of diethylzinc (DEZn) and t-butanol (t-BuOH) precursors is investigated by employing quantum chemical methods with density functional theory calculations to achieve controllable preparation ZnO thin film. Changes in the Gibbs free energy along paths at different deposition temperatures were analyzed thermodynamically kinetically. Results revealed that T<583.15K, undecomposed DEZn directly reacted t-BuOH via bimolecular collisions form Zn(OBut)2. Under excess...

10.2139/ssrn.4705296 preprint EN 2024-01-01

The crystal habit of pentaerythritol (PE) crystals is usually rod-shaped, which may lead to low bulk density and bad flowability compared with aspect ratio crystals. In this study, dipentaerythritol (DPE), methylcellulose (MC), hydroxypropyl (HPMC) were selected as additives modify the morphology PE presence DPE, was improved, decreased. modified attachment energy (AE) model conducted analyze changes in habits characterizes intensity interaction between DPE molecules faces. Spherical can be...

10.3390/cryst14030219 article EN cc-by Crystals 2024-02-24

Abstract Inorganic membranes are used to effectively capture particulate matter in dust without causing secondary pollution. However, fine particles accumulate on the surface and penetrate structure of inorganic membranes, thereby degrading their performance. This study investigated influence precoating with needle‐shaped wollastonite regeneration efficiency. The filter‐cake‐curing technique was employed, results were obtained by characterization methods, including scanning electron...

10.1111/ijac.14749 article EN International Journal of Applied Ceramic Technology 2024-04-07

The pyrolysis separation of calcium and magnesium from phosphate tailings is an important process due to its high-value resource utilization. In this paper, aiming address the problems high energy consumption, a slow decomposition rate low activity products in high-temperature tailings, medium-temperature under H2O atmosphere was carried out, phase reconstruction activation were discussed. results showed that compared with N2, air CO2 atmospheres, changed two stages one stage, starting...

10.3390/ma17092012 article EN Materials 2024-04-25
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