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Journal of industrial and engineering chemistry
The Korean Society of Industrial and Engineering Chemistry
Journal of industrial and engineering chemistry

The Korean Society of Industrial and Engineering Chemistry

1226-086X

Journal of industrial and engineering chemistry/Journal Journal of industrial and engineering chemistrySCIEICCRAHCI
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    Optimization of fabrication conditions for low-Pt anode using response surface methodology in high-temperature polymer electrolyte membrane fuel cell

    Jung H.-S.Kim D.-H.Chun H.Pak C....
    8页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryOptimizing the fabrication conditions of the catalyst layer in high-temperature polymer electrolyte membrane fuel cells is important for improving the catalyst utilization of the electrode. In this study, the effects of the binder concentration and the heat treatment temperature on the performance of membrane electrode assembly are investigated as controlled variables for fabricating low platinum (Pt) anodes. Furthermore, the response surface methodology (RSM), which is a kind of the design of experiment method, is applied to elucidate the optimum conditions based on the statistical analysis. Polytetrafluoroethylene is used as a binder in the range of 17.1–32.2 wt.% to generate the hydrophobic surface in the heat treatment temperature range of 307–392℃. The optimum anode based on the conditions from the RSM results shows a voltage of 0.636 V at 0.2 A/cm2 with a Pt loading under 0.2 mg/cm2. These results indicate that RSM can be used to optimize fabrication conditions with multiple variables.
      原文链接:
    • NSTL
    • Elsevier

    Simultaneous distillation-extraction for manufacturing ultra-high-purity electronic-grade octamethylcyclotetrasiloxane (D4)

    Guo W.Li H.Zhao X.Gao X....
    12页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryUltra-high-purity (UHP) electronic-grade octamethylcyclotetrasiloxane (D4) is the key precursor of low-dielectric constant (low-k) SiCOH films to manufacture integrated circuits (IC), meeting the stringent requirements of the rapidly developing semiconductor industry. Commonly, metallic impurities in D4 were removed by multiple unit operations of adsorption, filtration, and distillation, which could reduce the concentration of a single metallic impurity below 1 ppb. However, D4 with higher purity is required by semiconductor production due to an increase in transistor density. Herein, a novel method based on the integrated simultaneous distillation–extraction (SDE) was developed for manufacturing UHP electronic-grade D4. The lab and pilot scale experiments showed that the purity of water and D4 has a positive correlation. Based on the experimental data, a double-column process, consisting of azeotropic/extractive distillation column and precision distillation column with UNIQUAC method, was established to access the feasibility of scaling up the SDE process. According to the simulation results, D4 with the purity > 99.999 wt.% and total metallic impurities (TMI) content below 1 ppb could be obtained using ultra-pure water.
      原文链接:
    • NSTL
    • Elsevier

    Highly robust multilayer nanosheets with ultra-efficient batch adsorption and gravity-driven filtration capability for dye removal

    Iqbal A.Cevik E.Bozkurt A.Alagha O....
    9页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThis study reports the removal of methylene blue dye (MB) from aqueous solutions by ultra-efficient batch adsorption and membrane filtration using novel nitrogen-doped multilayer molybdenum carbide and molybdenum oxide nanosheets (NMoC@Mo). During batch adsorption studies, a complete MB dye removal (99.8%) was achieved against considerably high dye concentration (200 ppm) in a very short duration (7 min) using 4 mg of adsorbent dose. The equilibrium studies confirmed that the adsorption data followed Langmuir adsorption isotherm with a maximum monolayer coverage adsorbent capacity of 204 mg g?1. Reusability study of the NMoC@Mo nanosheets revealed that the adsorption (96%) /desorption (90%) efficiency of the adsorbent remained very high upto five consecutive cycles. the A cost-effective gravity driven membrane filtration studies were performed without applying any external pressure. Membranes (M-10, M-40, and M-60) containing three different loadings of NMoC@Mo (10 mg, 40 mg, and 60 mg, respectively) into the polyvinyl difluoride (PVDF) doped solutions were exhibited a maximum dye removal of almost 85% achieved with M-40 membrane. Moreover, M-40 membrane exhibited improved hydrophilicity (contact angle: 79.94°), water flux (53.35 L/m2-h), and improved antifouling properties. The results supported the immense potential and economic feasibility of NMoC@Mo in MB dye removal using both adsorption and membrane filtration processes.
      原文链接:
    • NSTL
    • Elsevier

    Determination of kinetic parameters for the sisal residue pyrolysis through thermal analysis

    Santos D.B.P.de Jesus M.F.Junior J.M.F.de Moraes Pires C.A....
    10页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryDetermining the kinetics of biomass degradation by thermogravimetry is complex due to the existence of numerous parallel and consecutive reactions. The individual use of models available in the literature has limitations regarding the applicability of the data due to high adjustment errors or lack of process information. Thus, a new procedure was proposed to determine the degradation kinetics of sisal residue, at heating rates of 20–80 °C/min and inert atmosphere. First, the reaction order was determined by the fit model for each heating rate, resulting in approximate values. Then, the activation energy and the pre-exponential factor were determined by free models (Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose, and Friedman). These models were validated from the experimental data of conversion and temperature, together with the calculated kinetic parameters. Friedman's model was the best fit. Finally, the errors obtained are compatible with those in the literature, indicating that this procedure can be used in kinetics involving biomass pyrolysis.
      原文链接:
    • NSTL
    • Elsevier

    Energy efficient design through structural variations of complex heat-integrated azeotropic distillation of acetone-chloroform-water system

    Lee H.Lee M.Lee J.W.Seo C....
    14页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThis study presents enhanced energy savings through structural variations of a heat-integrated distillation column for the separation of ternary azeotropic mixture. The conventional sequence has a decanter followed by pressure-swing distillation (PSD) columns for separating acetone-chloroform-water azeotropic mixture. Based on a significant temperature gradient of the PSD, a double annular column was proposed in order that the heat from hot fluid to cold fluid passed through the shared column wall. The heat transferred to the stages near the reboiler could replace the use of external utility, thereby reducing the total energy consumption of the process. For accurate calculations of heat transfer rate, the trays with the double annular structure were simulated by computational fluid dynamics. However, the energy saving was not effective since the structure could not afford to utilize all the heat transferred and additional energy was required to recover. The newly proposed (partial double annular) structure transferred heat from a high-pressure column to two low-pressure columns. It demonstrated 7,807.78 kW of the theoretical energy saving which was almost double of the heat transfer amount. Consequently, the total utility consumption and total annual cost was reduced by 21.79% and 11.32%, respectively, compared to the conventional sequence.
      原文链接:
    • NSTL
    • Elsevier

    Fabrication of novel self-healable ultraslippery surface for preventing marine microbiologically influenced corrosion

    Wang W.Li J.Zhu L.Zhang D....
    10页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistrySlippery liquid-infused porous surfaces (SLIPS) have attracted wide attention in the field of marine anti-corrosion. However, the stability problem severely restricts the broad applications of SLIPS. Herein, we fabricated a polyurethane-based ultraslippery surface with lubricant self-replenishing and matrix self-healing properties owing to the huge amount of dynamic hydrogen-bond. Besides, the bacteria culture test and electrochemical analysis results indicate the prepared surface possesses superior properties in the protection of microbiologically influenced corrosion (MIC). This paper offers an efficient strategy to solve stability problem of SLIPS, and the as-obtained self-healable ultraslippery surface can be used as a promising material in mitigating MIC.
      原文链接:
    • NSTL
    • Elsevier

    Manganese single-atom nanostructures for highly efficient tumor therapy

    Pei J.Liu C.Dou H.Li T....
    8页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThe single-atom attracts growing interests in various fields and provides a new strategy for tumor therapy by inspiring chemodynamic-photothermal therapy (CPT) effects owing to its excellent catalytic properties. We synthesize the Folic acid@single atomic manganese (Mn) nanoparticles (FA@SAMn NPs) with mesoporous carbon sphere structure by the coordination aided polymerization assembly method. Antitumor therapeutic effect studies were carried out in vitro and in vivo. This hierarchical nanostructure possesses a high surface area, large pore, and rich N that provide higher catalytic activity, and it also exhibits excellent activity and stability in the oxygen reduction reaction. With its accumulation in the specific tumor microenvironment, the FA@SAMn NPs could generate reactive oxygen species (ROS), which would mediate a series of 4 T1 cell damage and inhibit tumor propagation (56% mortality rate). Moreover, the FA@SAMn NPs possess an excellent photothermal effect under near infrared-II (NIR-II) laser irradiation. This leads to a local hyperthermia situation in the tumor area and contributes to tumor inhibition (91% mortality rate). In sum, FA@SAMn catalysts effectively suppressed tumor growth and significantly increased the survival time. This work aims to provide new potential single-atom-coordinated carbon networks that possess efficient biocatalytic sites and photothermal effects, inspiring a series of advances in ROS and photothermal-related biological applications across broad biomedical fields.
      原文链接:
    • NSTL
    • Elsevier

    PILs modified PMoW on silicon with hierarchical functional structure for ultra-deep oxidative desulfurization

    Li J.Li C.Zhao J.Gao R....
    9页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryIn order to obtain the clean fuel, two types of inorganic–organic hybrid catalysts with core–shell structures have been prepared as efficient and reusable catalysts for oxidative desulfurization, in which ionic liquids (1-vinylimidazole and 4-vinylpyridine) were grafted and polymerized on the surface of silicon through free radical polymerization and polyoxometalates (H3PMo6W6O40, attributed as PMoW) was functionalized on the surface of silicon. The as-prepared catalysts were characterized by FT-IR, UV–Vis, N2 adsorption–desorption, SEM and TEM. It could be proved that these two types of catalysts show high sulfur removal efficiency over 98% in the model fuel with 2000 ppm of DBT under mild reaction condition. The effective catalytic abilities of synthesized catalysts are mainly attributed to the hierarchical functional core–shell structures. The successful preparation of the PILs-polyoxometalates based catalysts with high catalytic activities could provide the demonstration of the application of polymer in oxidative desulfurization.
      原文链接:
    • NSTL
    • Elsevier

    Phenol removal and hydrogen production from water: Silver nanoparticles decorated on polyaniline wrapped zinc oxide nanorods

    Jilani A.Ansari M.O.Alshahrie A.Rehman G.U....
    12页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThe toxic and carcinogenic organic compounds discharge from industries, contaminate the natural reservoirs of water and air which eventually pose a global threat not only to the aquatic life but also to the humanity. Herein, ternary nanocomposites of silver-nanoparticle (AgNPs)-decorated on polyaniline (Pani)-wrapped zinc oxide nanorods (AgNPs@Pani/ZnO) were prepared via a facile approach. The nanocomposite degraded 97.91% phenol with an optimized dosage and concentration of H2O2. Moreover, the apparent rate constant for phenol degradation was 3.69 times higher than for pure ZnO nanorods. The hydrogen production from AgNPs@Pani/ZnO was 1.58 and 2.74 times higher than Pani/ZnO and ZnO, respectively. The enhanced phenol degradation and hydrogen production is attributed to the transfer of holes to the Pani, from which the electrons were transferred to the conduction band of ZnO and eventually to the conduction band of the AgNPs, where they accelerated the redox reactions for rapid photolysis of water and phenol. The concentration of the catalyst dosage affected the rate of phenol degradation. Further, response surface methodology was also applied in order to design 13 sets of random experiments in which the catalyst dosage and degradation time were varied to predict the phenol degradation.
      原文链接:
    • NSTL
    • Elsevier

    Tunable paclitaxel release carrier using diselenide-disulfide balance as regulator

    Xu J.Zhang Y.Shen W.Tian Z....
    13页
    查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThere are many reasons that lead to the failure of cancer chemotherapy, such as uncontrolled drug release, low drug utilization, and severe side effects. To overcome these obstacles, two kinds of thermal and redox-responsive copolymers with multiple diselenide/disulfide linkages, polyethylene glycol -alt- diselenodipropionate/disulfhydryldipropionate-b-poly(N-isopropylacrylamide) (abbreviated as PEG-alt-DSeDP-b-PNIPAM and PEG-alt-DSDP-b-PNIPAM) were fabricated by alternative esterification and following atom transfer radical polymerization. Afterward, these prepared copolymers were mixed in line with the mass ratio of 8:0, 5:3, 3:5, 0:8 (denoted as S1, S2, S3, and S4, respectively), and self-assembled with paclitaxel (PTX) to obtain PTX-loaded S1, S2, S3, and S4 nanomicellar assemblies, aiming to realize PTX tunable release using diselenide-disulfide balance as regulator. The chemical structures of these two copolymers were characterized by gel permeation chromatography, indicating eight diselenide/disulfide linkages and eight PEG units were contained in these copolymers. Moreover, the thermal-responsive property was detected by UV–vis spectroscopy, meanwhile, the redox responsiveness was observed by TEM in the presence of 10 mM glutathione. We found that 76.90% of PTX was released from S1 nanomicelles within 23 h. In contrast, this percentage decreased to 64.53% for S4 nanomicelles even the incubation time prolonged, indicating explosive and slow release behaviors of S1 and S4 nanomicelles, respectively. In addition, gradually decreased fluorescence intensity around the cellular nucleus was occurred from S1 to S4 orderly, which was consistent with cellular uptake and in vivo anti-tumor experiments. Taken together, this work not only provides a strategy for tunable PTX release, but also improves effectiveness of PTX in cancer treatment.
      原文链接:
    • NSTL
    • Elsevier