查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryUltraviolet radiation is extremely harmful to humans and often occurs in high-temperature weather. The development of intelligent textiles based on UV protection and thermal regulation is paramount. In this research, we use coaxial electrospinning technology to prepare anti-ultraviolet smart thermo-regulating nanofiber membranes. The zinc oxide (ZnO) and octadecane were incorporated into nanofibers with the polyacrylonitrile (PAN)/ZnO as sheath and the octadecane as core successfully. The composite nanofibers have excellent comprehensive properties, the highest melting enthalpy is 111.38 J/g, and the UPF value is 86.21. This multifunctional nanofiber membrane has broad prospects in outdoor products, electronic component protection, and military products.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryFacile synthesis of more dendritic and uniform Pt-based nanostructures with carbon materials could greatly reduce cost and increase Pt utilization for methanol oxidation reaction (MOR) in direct methanol fuel cell (DMFC). This study reports a novel one-pot method to fabricate AgPt nano-pompons (AgPt NPs) with the guidance of N-GQDs through AA reduce the precursor of Ag and Pt. Morphology characterization describes N-GQDs as morphology guiding and dispersing agents to regulate the dendrite formation of nano-pompons. Under the optimized conditions, the AgPt NPs (Ag1Pt2) display above 11 times improvement in electrocatalytic activity and higher stability for the MOR compared with Pt/C catalysts. Density function theory (DFT) studies prove that the introduction of Ag can greatly enhance the adsorption of CO on Pt and promote the transformation of CO to COOH. The facile synthetic method and excellent MOR performance endow AgPt NPs with great application prospect in DMFCs as an anode catalyst.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryAchieving high catalytic performance with the lowest cost possible cathode material is critical for electrocatalytic synthesis of H2O2 by oxygen reduction reaction. In this work, we describe a method of preparing highly active yet stable graphite felt electrocatalysts containing ultrahigh-loading oxygen content by using organic acid anodic modification. The results show that modified graphite felt surface was more hydrophilic and introduced a large amount of defect sites and oxygen-containing groups. Moreover, the influence of mass oxalic/citric acid ratio and oxidation time of graphite felt cathode were investigated. As a result, H2O2 electrogeneration was 1.6 times as much as that of virgin graphite felt counterpart at the mass oxalic/citric acid ratio of 2:1 oxidation for 40 min. However, overoxidation also impaired the electrical production of H2O2 due to decarboxylation. Finally, the effect of cathode potential and reaction pH on graphite felt cathode was optimized. As for the modified graphite felt, the maximum accumulation rate of H2O2 reached 4.5 mg h?1 cm?2 at the conditions of ? 0.85 V (SCE), 0.4 L min?1 O2 flow rate and pH = 3. In addition, it kept a stable performance for electrochemical generation of H2O2 during 8 cycles.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryIn this study, we demonstrated a one-pot synthesis of Cu nanoplates (Cu NPs) with high purity and “clean surface”. Different from surfactant-assisted method, we tailored the architecture by controlling the ripening time of Cu seeds. Citrate is introduced as a structure-directing agent. Since the “clean surface” provide more available active sites, the as-prepared Cu NPs show a superior performance when utilized in the non-enzymatic biosensors. In the detection of nitrite, the sensor constructed by Cu NPs exhibited a superior sensitivity (303.1 ± 10.18 μA·mM?1·cm?2), and the detection range is 5.0 mM. On the contrary, sensitivity for the Cu NPs by surfactant-assisted method is negligible. As applied in the glucose sensors, detection range by Cu NPs could reach 36.0 mM. And the sensitivity under ambient condition (298 K) is 561.93 ± 3.72 μA·mM?1·cm?2, which is ca. 2.11-folds higher than that for Cu NPs by surfactant-assisted method. In the detection of H2O2, detection range is 10.0 mM, and the enhancement factor for detection range is up to 2.0-folds. The superior performance can also be extended to the catalysis for the reduction of 4-nitro-phenol. Since no additional noble metals was applied, this strategy would open up a new avenue for utilizing non-noble metals.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryHexamethylene diisocyanate was employed as a reactive additive to capture lithium polysulfides formed at the cathode of lithium-sulfur batteries. Unlike other solid additives used to trap polysulfides through physical and chemical interactions, it could effectively capture lithium polysulfides through chemical reaction between hexamethylene diisocyanate and lithium polysulfides at the electrode–electrolyte interface. A small amount of hexamethylene diisocyanate was enough to completely block the dissolution of lithium polysulfides into liquid electrolyte due to its high chemical reactivity, which enhanced the cycling stability of the lithium-sulfur battery while maintaining its high energy density. Our results demonstrate that the addition of hexamethylene diisocyanate to liquid electrolyte can provide an efficient strategy to address dissolution of lithium polysulfides and achieve good cycling stability in the high energy–density lithium-sulfur batteries.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryDirect numerical simulation of particle growth in fluid flow is still challenging, because of the limited information available in experiments. To simulate particle growth in fluid flow, fluid-particle interactions must be considered along with particle growth models in an integrated model of numerical methods. In recent times, immersed-type methods have succeeded in simulating multiple solid objects in fluid flow. Furthermore, various interaction forces on particles can be included in a simulation model. In this study, an immersed Lagrangian point method was proposed to simulate a particle growth model in fluid flow, specifically, Taylor–Couette flow. The agglomeration and deagglomeration processes of particles were described in the simulation model. The simulation model was compared against actual experiments of particle growth in fluid flow and tested using various sets of particle growth parameters. Finally, the potential and future perspectives of the suggested model were fully discussed.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryTwo-dimensional MXene nanomaterials have found a wide application range in recent years. Here, Ti3C2 MXene nanosheets exhibiting inherent photothermal activity reveal synergistic plasmon-enhanced photocatalytic properties upon rational surface decoration with palladium nanoparticles (NPs). Pd incorporation induces a 1.7-fold increase in the number of defect sites on the MXene surface. Most importantly, the introduced Pd nanoparticles favour an effective separation and collection of localized surface plasmon resonance (LSPR)-induced hot charge carriers generated at the surface of semi-metallic Ti3C2 NS, further facilitating the generation of hydrogen peroxide (H2O2). The generated H2O2 is sequentially decomposed to hydroxyl radicals via the peroxidase (POD)-like activity of Pd NPs. The Pd@MXene shows approximately 2-fold enhancement of photocatalytic activity and excellent photostability under laser irradiation. Taken together, this study highlights the promise of constructing active and stable MXene-based nanohybrids for highly effective photo-responsive nanomedicine.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryWe demonstrate the highly adhesive and uniform printing of carbon nanotube (CNT)-polymer composites (CPCs) on diverse commercial fabrics for durable electronic textiles. The mechanically assisted printing (MAP) technique proposed in this work enables the uniform and faithful printing of conductive CPCs on fabrics with excellent adhesion against fabric deformation and stretching. We have systematically studied that the printability and conductivity of CPCs can be optimized by controlling the mixture ratio of the CNTs in an adequate polymer. We also present that various practical patterning methods, such as masked printing and pattern molding, can be applied to the MAP of specifically patterned CPCs to fabricate flexible electronic circuits that operate durably on fabrics. Many diverse industrial applications may benefit from this work, including but not limited to lightweight flexible electronics and sensors, wearable devices and gears, and functional textiles.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryIn wastewater treatment, the dimensionally stable anodes (DSAs) based on costly metals are currently being used for electrochlorination due to their superb chlorine evolution reaction (CER) performance. However, owing to their low OER overpotential, DSAs show poor current efficiency for CER in dilute chloride solutions (<50 mM), which are common wastewater conditions. Therefore, this study aimed to fabricate a novel anode for efficient chlorine evolution in dilute chloride solutions. To control the OER overpotential, cobalt oxide was selected as an electrode material and iridium was added as a cocatalyst with a small content (<3% atomic percent) to improve stability. Iridium-cobalt mixed oxide (ICO) electrode showed a sevenfold improvement in CER efficiency (15%) in 1 mM NaCl concentration compared to pristine IrO2 (2%). In addition, above a 50 mM NaCl concentration, ICO exhibited an excellent CER efficiency close to unity. Furthermore, superiority as a CER anode was also demonstrated with high stability (>200 h) in the accelerated stability test (0.5 M H2SO4 solution at 0.1 A cm?2) as well as superior ammonium degradation performance in dilute aqueous conditions. These results suggest that ICO can be a promising anode with its high CER efficiency, low cost, and notable stability.
查看更多>>摘要：? 2022 The Korean Society of Industrial and Engineering ChemistryThe authors regret “The corresponding author marks “*” of the article were lost. The corresponding author are Lehua Qi and Jun Luo. The correct writing is shown above”. The authors would like to apologise for any inconvenience caused.
NSTL
Elsevier