首页期刊导航|Journal of the Taiwan Institute of Chemical Engineers
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Journal of the Taiwan Institute of Chemical Engineers
c/o Department of Chemical Engineering, National Taiwan University
Journal of the Taiwan Institute of Chemical Engineers

c/o Department of Chemical Engineering, National Taiwan University

1876-1070

Journal of the Taiwan Institute of Chemical Engineers/Journal Journal of the Taiwan Institute of Chemical EngineersEISCIISTP
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    Fe3O4/MnO2 co-doping phenolic resin porous carbon for high performance supercapacitors

    Dong, XiaoxiWang, JingyueMiao, JunfengRen, Bin...
    14页
    查看更多>>摘要：Background: Thus, the excellent electrochemical property of PR-Fe@MnO2 composite made it an encouraging electrode material for practical applications like charge storage and in other pseudocapacitors.Methods: Using phenolic resin (PR) as a carbon source, potassium ferrate (K2FeO4) and manganese acetate (Mn(CH3COO)2 cent 4H2O) as the dopants, a one-step carbonization method was used to prepare a series of Fe3O4 and MnO2 co-doped composites, which are denoted as PR-Fe@MnO2. During high-temperature carbonization (800 degrees C), partially amorphous carbon forms a multi-layer graphene structure, making PR-Fe@MnO2 exhibit a high degree of graphitization. After doping, the transition metal Mn was investigated theoretically by performing density functional theory calculations.Significant Findings: The results confirmed that doping of moderate Mn ions in the PR-Fe lattice improved the interactions between OH- in the electrolyte and Mn metal center, consequently, the electrical conductivity (19%) of the electrode according to the equivalent series resistance (Rs). The Mn composition also increased the specific area for more electroactive sites and reduced the charge transfer resistance (decreased by 27.7%). As a result, PR-Fe@MnO2-1.5 had the highest specific capacitance of 601 F/g at 1.0 A/g and superior cycling stability (capacitance retention of 97.8% after 10,000 cycles). Furthermore, the assembled PRFe@MnO2-1.5//PR-Fe@MnO2-1.5 symmetric supercapacitor provided a specific energy density of 25.7 Wh/ kg at a power density of 384.9 W/kg.(c) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    Exploring the applicability of a geopolymer and a biopolymer as an environmentally benign treatment option for heavy metals contaminated water

    Bernard, Kameni Ngounou M.Prakash, OmHippargi, GirivyankateshSylvere, Ndi K....
    12页
    查看更多>>摘要：Background: Two environmentally friendly materials (lateritic clay-based geopolymer; LGP and Grewia biopolymer; GBP) were successfully processed from the locally available resources in Cameroon and their applicability for removal of Ni(II) and Co(II) from aqueous solution was explored.Methods: The materials were characterized by FTIR, BET, XRD, Zeta potential and SEM. Metal ion concentrations were quantified using ICP-OES.Significant Findings: Crystalline LGP showed higher specific surface area (73.32 m2/g) than GBP (22.73 m2/g). Removal of Ni (19.62%) and Co (22.22%) (initial metal ion concentrations 5 mg/L) achieved using LGP (2 g/L) were lesser than that achieved using GBP (0.6 g/L) (60.15%, and 57.68%, respectively) at the identical conditions. Higher adsorptive capacity of GBP was ascribed to the presence of negatively charged groups (glucuronic, galacturonic) in its structure. Langmuir and Dubinin-Radushkevic adsorption isotherm models fit well to Co(II) and Ni(II) removal data on LGP (R2 = 0.989 and 0.949, respectively). However, Freundlich isotherm renders best fit for both ions (R2 = 0.969 and 0.989, respectively) using GBP. Combined use of the adsorbents showed much higher removal efficiency (~80%) for both the metal ions (pH 5) indicating that LGP and GBP can be used together to achieve better removal of heavy metals from contaminated water.
      原文链接:
    • NSTL
    • Elsevier

    TFC organic solvent nanofiltration membrane fabricated by a novel HDPE membrane support covered by manganese dioxide /tannic acid-Fe(3+)layers

    Heidari, Ali AkbarMahdavi, Hossein
    13页
    查看更多>>摘要：Background: It is of great importance to select an ultrafiltration (UF) support with outstanding solvent stability to fabricate thin film composite (TFC) organic solvent nanofiltration (OSN) membranes.& nbsp;Methods: High density polyethylene (HDPE)-polystyrene (PS)-styrene-ethylene-butylene-styrene (SEBS) blends were prepared through the incorporation of different SEBS weight percentages. Next, HDPE membranes were made via extracting the dispersed phase from the HDPE/PS/SEBS blends using THF. Then, the membrane with the optimum properties was selected as the support for preparing the TFC membranes. Accordingly, the support was first contacted with KMnO4 solution, by which MnO2 nanoparticles (NPs) were generated on the support surface. The membrane surface was then contacted with tannic acid (TA) and FeCl3 aqueous solutions consecutively to form a uniform TA-Fe3+ layer. Eventually, the PA layer was formed on the membrane surface through contacting with m-phenylenediamine aqueous solution and trimesoyl chloride/n-hexane solution consecutively.& nbsp;Significant Findings: The TFC membrane exhibited extraordinary dyes rejection and good methanol permeance in OSN applications. Moreover, DMF activation process was conducted on the TFC membrane, after which both the dye rejection performance and methanol permeance were enhanced. Moreover, it is worth pointing out that the membrane provided an excellent solvent stability after dipping in DMF after 100 days. (C) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    A biphasic mathematical model for the release of polymer-drug conjugates from poly(vinyl alcohol) hydrogels

    Wang, Ting-ChingTsai, Wei-Bor
    9页
    查看更多>>摘要：Background: Hydrogels are a popular vehicle for controlled drug release. In comparison with small-soluble drugs of simple diffusion, the release of large polymer-drug conjugates is more complex and could not be predicted by a simple diffusion model. This study was aimed at mathematical modeling of the release of polymer-drug conjugates to design controlled drug-release hydrogel systems. Methods: Fluorescein was used as a small model drug, whereas fluorescein isothiocyanate-dextran acted as a polymer-drug conjugates. The molecules were encapsulated in poly(vinyl alcohol)-based hydrogels with different concentrations and degrees of crosslinking. The release data were fitted using a one-diffusion coefficient (1DC) model and a two-diffusion coefficient (2DC) model, performed by Matlab. Significant findings: The simple 1DC model fitted the release data of small molecules (< 10 kDa) very well, while the more complex 2DC model was needed to predict the release of macromolecules (10-250 kDa) for a better fit. The 2DC model proposed that a hydrogel is a heterogeneous structure with dense and loose areas, and macromolecules diffuse through the two areas with different diffusivity. We further demonstrated that the biphasic model could be applied to design hydrogel systems for precision drug release profiles.
      原文链接:
    • NSTL
    • Elsevier

    N-doped low-rank coal based carbon catalysts for heterogeneous activation of peroxymonosulfate for ofloxacin oxidation via electron transfer and non-radical pathway

    Cao, Xiao-QiangFang, Yu-HuiKan, Yu-JiaoZhang, Yang...
    8页
    查看更多>>摘要：Background: Advanced oxidation processes based on sulfate radicals were promising technologies for deep wastewater treatment. There was an urgent need of low-cost and green catalytic materials. Methods: In this study, N-doped low-rank coal based carbon catalysts (NLCs) were prepared under different urea and low-order coal ratios and pyrolysis temperatures, which showed excellent catalytic performance for peroxymonosulfate (PMS) activation. Significant findings: The NLCs had a high degree of graphitization and electrical conductivity, which leading to a high removal rates as 100% in 45 min. The N-doped structure lead to the formation of electron-rich regions, which favored the adsorption of PMS. Mechanistic studies revealed that the main reactive oxygen species in the NLC/PMS system was singlet oxygen (1O2), and that electron transfer pathways and surface-bound reactive complexes also played an important role in this system. The NLC/PMS system had a wide pH adaptation and good environment adaptation because of the electron transfer mechanism. It could remove 100% OFL in the pH range of 3-9. Therefore, the prepared N-doped coal based carbon catalytic materials had good prospects for application in advanced oxidation processes for wastewater treatment. (c) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    Design of hierarchical MoSe2-NiSe2 nanotubes anchored on carbon nanotubes as a counter electrode for dye-sensitized solar cells

    Mirzaei, MahinGholivand, Mohammad Bagher
    13页
    查看更多>>摘要：Background: The high cost, shortage, and instability of platinum (Pt) markedly hamper its commercialization in dye-sensitized solar cells (DSSCs). Consequently, developing efficient, stable, and economic electrode materials in lieu of noble Pt is of great current priority for DSSCs. Methods: In this work, a facile hydrothermal method followed by an ultrasonication process was utilized to synthesize the hollow MoSe2--NiSe2 nanotubes anchored on carbon nanotubes (denotes as MS-NS NTs@CNTs) and was developed as an efficient counter electrode (CE) in DSSCs. The resultant of MS-NS NTs@CNTs was characterized using XRD, FESEM, EDX, TEM, and N2 adsorption-desorption. Significant findings: The combination of MS-NS NTs and CNTs provides more active sites, remarkable electric conductivity for rapid charge transfer, and an admirable catalytic property toward the reduction of triiodide. The DSSC with MS-NS NTs@CNTs achieves a high power conversion efficiency (PCE) of 9.57% and exceptional electrochemical durability with a remnant PCE of 8.69% after 72 h of illumination, better than Pt-based cell (PCE: 9.02%). These outcomes open a new avenue to fabricate low-cost electrocatalysts for their potential application in next-generation energy storage and conversion devices such as DSSCs, water splitting, fuel cells, and other electrochemical applications. (c) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    Modeling of phase separation solvent for CO2 capture using COSMO-SAC model

    Hung, Ying-ChiehHsieh, Chieh-MingMachida, HiroshiLin, Shiang-Tai...
    10页
    查看更多>>摘要：Background: Phase separation solvents are proposed to replace conventional solvents for CO2 capture due to a significant reduction of absorbent regeneration heat. A predictive approach based on COSMO-SAC is developed to model the CO2 capture process using the phase separation solvent of 2-(ethylamino)ethanol (EAE) + water + diethylene glycol diethyl ether (DEGDEE). Methods: In this approach, liquid phase compositions, including CO2 solubility, are determined from vapor liquid-liquid equilibrium calculation with a chemisorption reaction in both liquid phases. The behavior of phase separation after CO2 capture and CO2 solubility in both CO2-lean and CO2-rich phases at 313 and 353 K can be well described by the proposed approach. Significant findings: The overall root-mean-square-deviation (RMSD) in predicting compositions (128 data points) of all components in both liquid phases is 0.064, which is slightly better than a previous study on the accuracy of COSMO-SAC in LLE prediction (RMSD = 0.105). The phase separation behavior of solvent can be realized with the hydrophilic product upon CO2 absorption from the s-profile analysis. The proposed framework is expected to be a useful tool for the development of a new phase separation solvent. (C) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    Fe3C confined in N-doped carbons derived from Fe-N bearing ionic liquids for selective oxidation of styrene into benzaldehyde with molecular oxygen

    Guang, BinxiongZhang, YiweiXiao, YahuiSu, Miaojun...
    9页
    查看更多>>摘要：Background: It is of great significance but still a challenge in the chemical industry to develop high-efficient heterogeneous catalysts for selective oxidation of styrene into benzaldehyde with molecular oxygen. Methods: Fe3C nanoparticles confined in N-doped carbons (Fe3C/NC) were prepared using Fe3+ coordinated N-bearing ionic liquids as precursors and melamine as nitrogen source and template, followed by pyrolysis at 900 degrees C under N2 atmosphere. The physicochemical properties of the as-prepared Fe3C/NC catalyst were analyzed by FT-IR, TG, BET, TEM, XRD, Raman and XPS, respectively, and further employed as novel heterogeneous catalyst for selective oxidation of styrene into benzaldehyde with molecular oxygen. Significant findings: The results showed that the Fe3C nanoparticles were formed and uniformly embedded into the N-doped carbon matrix, which were confirmed to be the active sites for styrene oxidation. Moreover, the 5 % Fe3C/NC catalyst possessed high surface area and dominant mesoporous structure, which could expose more accessible active sites and facilitate mass transfer. As a result, the 5 % Fe3C/NC catalyst exhibited superior catalytic performance for styrene oxidation into benzaldehyde with the appropriate styrene conversion of 58.8 % and selectivity to benzaldehyde of 64.1 % as well as no significant activity and selectivity loss after reused at least five times. (c) 2022 Taiwan Institute of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
      原文链接:
    • NSTL
    • Elsevier

    The microchannel type effects on water-Fe3O4 nanofluid atomic behavior: Molecular dynamics approach

    Hu, XuefangDerakhshanfard, Amir HosseinPatra, NdrajitKhalid, Imran...
    11页
    查看更多>>摘要：Background: Today, thermal management in electronic and industrial equipment at nano and micro scales is an important issue and has a significant impact on the price and reliability of the system. For this reason, the use of microchannels (MCs) was considered by researchers. MC type is an important parameter for heat and mass transition applications. MC wall type change can optimize their performance for various industrial aims. Methods: Molecular Dynamics simulation (MDS) is utilized in the current computational examination to describe water/Fe3O4 nanofluid (NF) behavior inside MCs with Cu and Pt wall types. Our simulations consist of two main steps as equilibrium and atomic evolution steps. In the first step, the temperature and total energy (TE) of the MC-NF system are computed for the equilibrium phase detection process. Furthermore, density/velocity/temperature profile, potential energy (PE) and aggregation time are reported to atomic behavior description of simulated structures. MD outputs indicate that by changing the MC type from Pt to Cu, the atomic stability of the total system increases. Significant findings: Using Cu and Pt atoms for the MC walls, the PEs of simulated structures were equal to-611,228 eV and-742,726 eV, respectively. Also, the nanoparticles (NPs) aggregation phenomenon was affected by MC wall type changes, and this phenomenon was occurred in 1.40 ns/1.45 ns time using Pt/Cu MC.
      原文链接:
    • NSTL
    • Elsevier

    Numerical study of free surface axisymmetric jet impinging on a heated flat surface utilizing high concentration SiO2 nanofluid

    El-Maghlany, Wael M.Sorour, Medhat M.Abbass, Amgad M.Alnakeeb, Mohamed A....
    16页
    查看更多>>摘要：Background: A comprehensive numerical study is presented to investigate the heat transfer and fluid flow characteristics between a vertical free surface jet and a horizontal heated plate. Methods: The jet was made up of water-SiO2 nanofluid with an average particle size of 8 nm that was delivered from a 6 mm nozzle diameter. The numerical model covered a wide range of jet Reynolds numbers up to 31,800, five nanoparticle volume fractions of 0, 2.5, 4.5, 6.5, and 8.5%, five values of the nozzle to plate aspect ratios (z/ d = 0.5, 1, 2, 4, and 8), and plate radius to jet diameter ratio (r/d) of 12.5. Two-dimensional continuity, momentum, and energy equations are discretized with commercial finite volume software (ANSYS Fluent 15) under the v2f turbulence model. The numerical model has been verified through the comparison between its predicted results and those obtained from previous experimental published work. Significant findings: The results were presented graphically in the form of free jet interface thickness, radial velocity profiles, turbulence intensity profiles, and local and average Nusselt numbers on the heated plate. The results showed that the improvement of the average Nusselt number increases with the volume fraction and Reynolds number. Therefore, the utilization of SiO2 nanoparticles can significantly provide the improvement of the average Nusselt number up to 66.02%, for a volume fraction of 8.5% compared to pure water. Also, the average Nusselt number is slightly influenced by the nozzle to plate aspect ratio (0.5 < z/d < 4). Finally, a new heat transfer correlation for the average Nusselt number has been proposed. The new correlation presents the average Nusselt number as a function of Reynolds number, Prandtl number, nanoparticle volume fraction, plate to jet diameter ratio, and nozzle to plate aspect ratio.
      原文链接:
    • NSTL
    • Elsevier