Chemical Engineering Journal最新文献

{"title":"Mechanistic investigation on integrated CO2 capture and reduction by Na-based dual-function materials with and without Cu","authors":"Tomone Sasayama ,&nbsp;Yuya Ono ,&nbsp;Fumihiko Kosaka ,&nbsp;Yanyong Liu ,&nbsp;Atsushi Urakawa ,&nbsp;Koji Kuramoto","doi":"10.1016/j.cej.2025.164481","DOIUrl":"10.1016/j.cej.2025.164481","url":null,"abstract":"<div><div>Integrated CO₂ capture and reduction (CCR) using dual-function materials (DFMs) has emerged as a promising strategy for effective utilization of CO₂. A thorough understanding of the reaction mechanisms of CCR using the DFMs is important for enhancing their performances. In this study, Na/Al₂O₃ and Na/Cu/Al₂O₃ were compared to investigate the role of Na-based DFMs, particularly transition-metal-free DFMs, in facilitating CCR to CO. Fixed-bed experiments comprising of CO₂ capture and reduction phase were performed to examine their performances at various temperatures. The two DFMs exhibited similar behaviors during the CO₂ capture phase. In the subsequent reduction phase, the DFMs produced nearly equal amounts of CO, reaching 0.21 mmol/g, at temperatures exceeding 450 °C. By increasing the temperature to 500 °C, the CO production rates reached an identical level of 0.18 mmol/(min·g). Time-resolved in-situ spectroscopy confirmed the formation of carbonate species during the capture phase. Carbonates were further reduced to CO directly or via intermediate formate species in the reduction phase. The formation of formates was predominant on Na/Cu/Al₂O₃ at temperatures below 400 °C. However, at higher temperatures, the direct reductive decomposition of carbonates to form CO became the dominant pathway for both the DFMs. Elucidation of a more detailed mechanism of the direct reductive decomposition pathway is critical, particularly the role of Na sites during the reduction phase.</div></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"518 ","pages":"Article 164481"},"PeriodicalIF":13.3,"publicationDate":"2025-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tailored PPy-coated CeO2/Co3O4 yolk-shell nanostructures: engineering sulfur hosts for high-performance lithium-sulfur batteries","authors":"Yuqi Wang ,&nbsp;Bin Yue ,&nbsp;Xinyu Yan ,&nbsp;Ying Fang ,&nbsp;Jinxian Wang ,&nbsp;Qianli Ma ,&nbsp;Guixia Liu ,&nbsp;Wensheng Yu ,&nbsp;Xiangting Dong","doi":"10.1016/j.cej.2025.164649","DOIUrl":"10.1016/j.cej.2025.164649","url":null,"abstract":"<div><div>Lithium-sulfur (Li<img>S) batteries encounter several challenges as a leading competitor in advanced energy storage technology, including the low conductivity of elemental sulfur, volumetric expansion during charge-discharge cycles, and the substantial shuttle effect of lithium polysulfides. These problems significantly impede the practical adoption of Li<img>S batteries. To tackle these issues, polypyrrole (PPy)-coated CeO₂/Co₃O₄ yolk-shell structured hollow nanospheres (PHNS) with a unique structure are prepared as a cathode host material. The unique hollow yolk-shell nanostructure of PHNS, rich in active sites, facilitates high sulfur utilization and optimizes polysulfide physical-chemical encapsulation. At the same time, the effective coating of PPy enhances conductivity and mitigates the volumetric expansion of sulfur. Consequently, Li<img>S batteries with PHNS cathode demonstrate remarkable discharge performance, delivering an initial discharge capacity of 829 mAh g⁻¹ at 2C, with an average capacity decay rate of a mere 0.051 % per cycle after 500 cycles. Additionally, at a high sulfur loading of 6.5 mg cm⁻², a reversible areal capacity of 5.7 mAh cm⁻² remains achievable. The conductive polymer and unique structural characteristics of the host material exhibit low overpotentials and rapid electrochemical kinetics, highlighting the significance and value of this innovative design for advancing high-energy-density energy storage systems.</div></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"518 ","pages":"Article 164649"},"PeriodicalIF":13.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243604","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel type I-like F-scheme heterojunction for improving H2 generation from water: A case modelled by physically-attached ZnCdS-Cu2O composite","authors":"Tsung-Yu Teng, Kim Hoong Ng","doi":"10.1016/j.cej.2025.164603","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164603","url":null,"abstract":"Type-I heterojunction has been long-perceived non-effective in photocatalytic research. Nonetheless, this work holds an opposite belief, suggesting the possibility of securing improved photo-activity even with heterojunction possessing Type-I-like band alignment. Such concept was deliberately verified over a <em>F</em>-scheme heterojunction modelled by ZnCdS-Cu₂O, with their intimate interface yielding interesting interaction and improved optical properties. Electronically, the wide bandgap ZnCdS possesses relatively higher Fermi level (E_f). Contacting them would, therefore, induce ZnCdS-to-Cu₂O electron shuttlings, enabling an auspicious interfacial band alignment with upward-bended ZnCdS's bands alongside oppositely bending Cu₂O's bands. Such band structure realizes two facilitated pathways which thermodynamically direct photo-holes towards Cu₂O while immobilizing photo-electrons at the conduction band of ZnCdS. Spatial separation of photo-charges can, therefore, be achieved, with the robust photo-reductive capability of composite preserved. At surficial level, ZnCdS-Cu₂O promises expedient hydrophilicity and facile H₂ desorption; these help to accelerate H₂ generation during photoreaction. 940 % activity improvement against ZnCdS is, therefore, realized by ZnCdS-Cu₂O_10%. Astonishing AQY of 94.3 % (365 nm) and 72.1 % (420 nm) was also attained by the same photocatalyst, in conjecture to its highly sustainable activity that could last for 10 photoreaction cycles. Meanwhile, practicality evaluation suggested the high resilience of ZnCdS-Cu₂O_10% against alkaline condition and intermittent production halts in dark. More importantly, its applicability to H₂ generation from seawater was also validated, demonstrating a net positive energy production of 205 % even with ethanol added. Overall, this work verifies the productivity of Type-I-like <em>F</em>-scheme heterojunction, offering new avenues for future research to photocatalytic community.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238074","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sulfurization-induced mesoporous hollow NiCo2S4 polyhedrons from ZIFs for high-performance asymmetric supercapacitors with superior electrochemical stability","authors":"Naveen T. Bharanitharan, Durgalakshmi Dhinasekaran, M.R. Ashwin Kishore, Balakumar Subramanian, Ajay Rakkesh Rajendran","doi":"10.1016/j.cej.2025.164556","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164556","url":null,"abstract":"This study introduces an innovative approach to deriving highly mesoporous hollow NiCo₂S₄ polyhedrons from zeolitic imidazolate frameworks (ZIFs), with a focus on electrochemical efficiency. Synthesized via a straightforward coprecipitation route, the NiCo-ZIFs were transformed directly into bimetallic sulfides using thioacetamide as a sulfur source, allowing gradual dissolution of the ZIF’s inner layers. This process formed hollow polyhedrons with retained morphology and significantly enhanced mesoporosity, confirmed by BET analysis, showing a high surface area of 165 m²/g. Electrochemical characterization revealed a remarkable specific capacitance of 1357 F g⁻¹ at 1 A g⁻¹ and 91.1 % retention after 5000 cycles, showcasing enhanced electrochemical stability, supported through ex-situ XRD and SEM analysis. In a two-electrode configuration with biomass-derived reduced graphene oxide (rGO) as the counter electrode, the NiCo₂S₄ delivered a maximum energy density of 58.5 Wh kg⁻¹ and a power density of 3.44 kW kg⁻¹. This high-performance behaviour led to the successful fabrication of an asymmetric supercapacitor, demonstrating the practical applicability and robust reliability of the NiCo₂S₄ polyhedrons for next-generation energy storage solutions in real-world applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"40 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chemically tailored hollow Co@N-doped carbon nanoboxes with dual-phase synergy for high-energy and long-life lithium-ion capacitors","authors":"Chunyu Zhao, Xiong Zhang, Shasha Zhao, Heqiang Liu, Chen Li, Yabin An, Xianzhong Sun, Kai Wang, Shuyu Yao, Yanwei Ma","doi":"10.1016/j.cej.2025.164530","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164530","url":null,"abstract":"Hollow-structured materials have gained considerable attention for their potential in alleviating the volume expansion of electrode materials; however, their controllable synthesis remains a critical challenge. This research presents a simple method for the synthesis of hollow Co@C composites through the derivatization of ZIF-67 via a chemical etching-coordination process and subsequent pyrolysis. The resulting nitrogen-doped carbon nanocubes exhibit a unique hollow structure with highly dispersed cobalt nanoparticles integrated into mesoporous carbon walls (denoted as H-Co@NCs). This structure mitigates volume expansion, ensures stable electrical contact, and offers numerous active sites, facilitating the storage and diffusion of lithium ions. The H-Co@NCs anode displays an impressive reversible capacity of 734.4 mAh g⁻¹ at 0.1 A g⁻¹ and notable cycling stability, maintaining 270 mAh g⁻¹ after 1000 cycles at 2 A g⁻¹. The assembled lithium-ion capacitor (LIC) with H-Co@NCs as the anode and activated carbon as the cathode achieves a high energy density of 151.3 Wh kg⁻¹ and a power density of 35.9 kW kg⁻¹, retaining over 88.4 % capacity after 40,000 cycles. This research presents a viable strategy for creating advanced energy storage materials to balance power and energy density for practical LIC applications.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"522 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thermotropic liquid crystal-driven interfacial fusion of high-aspect-ratio polyarylate nanofibers for ultrastable honeycomb with closed-loop recyclability","authors":"Jingxian Wang, Hua Ma, Bo Yuan, Shiwen Yang, Qingquan Tang, Yuping Chen, Yuxuan Zhu, Hua Wang, Luoxin Wang, Siwei Xiong","doi":"10.1016/j.cej.2025.164614","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164614","url":null,"abstract":"To address process and interface limitations in aramid honeycomb for aerospace and rail transportation, this work develops polyarylate (PAR) nanofibers with high aspect ratios using melt spinning coupled with wet dissociation, exploiting the liquid crystalline behavior of PAR to enhance molecular alignment and mechanical integrity. A scalable template thermal welding process was used to enable directional assembly and strengthen interfacial fusion in PAR nanofiber honeycomb (PAR NFHC), effectively mitigating stress concentration and delamination failures caused by fiber/resin interface mismatch in conventional aramid honeycombs. PAR NFHC demonstrates exceptional mechanical properties, with compressive strength, specific strength, and Young's modulus reaching 161 MPa, 290 kN·m·kg⁻¹, and 977 MPa, respectively-up to 40 times higher than commercial HC. Even after prolonged exposure to high temperatures (200 °C for 24 h) and ultraviolet radiation (24 h), PAR NFHC retains compressive strengths of 151.8 MPa and 146 MPa, respectively, with minimal degradation, whereas commercial HC experiences a substantial reduction to 1.8 MPa and 1.9 MPa. PAR NFHC exhibits excellent flexibility, enduring single-point bending at 45° and double-point bending at 30° without failure. The thermoplasticity of PAR NFHC enables closed-loop recycling, minimizing resource consumption while maintaining performance. This property positions PAR NFHC as a promising candidate for the sustainable development of high-performance honeycomb materials.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"10 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The trio of Jatropha curcas fruit seeds: A performance battle of three plant-based inhibitors","authors":"Simei Yang ,&nbsp;Xianghong Li ,&nbsp;Guanben Du ,&nbsp;Yujie Qiang ,&nbsp;Shuduan Deng","doi":"10.1016/j.cej.2025.164643","DOIUrl":"10.1016/j.cej.2025.164643","url":null,"abstract":"<div><div><em>Jatropha curcas</em> has been attracted much attention due to its superior biodiesel applications. Three novel bio-based inhibitors arisen from its fruit seed meal (JFM): refluxed extract (RJFME), ultrasound-assisted extract (UJFME) and carbon dots (CDs-JFM) are reported for the first time in retarding the corrosion of cold-rolled steel (CRS) in hydrochloric acid (HCl) medium, achieving the highest inhibition efficiencies of 96.5 %, 93.5 % and 96.2 % at 303 K with the addition of 100 mg L⁻¹, respectively. Their excellent performance depends on the spontaneous formation of protective film on CRS surface by Langmuir adsorption mode, which extremely impedes the diffusion of corrosive particles of Cl⁻, H₃O⁺ and H₂O. This results in a substantial reduction in corrosion current density and an increase in polarization resistance. Three JFM inhibitors exhibit comparable inhibition capacities in weight loss, electrochemical and surface examinations. CDs-JFM stands out as a more superior inhibitor due to its stable and long-lasting performance in highly corrosive HCl solution and over extended reaction time. Remarkably, the fluorescence properties of CDs-JFM act as a probe to elucidate its adsorption mechanism onto CRS surface. This work unveils the potential of JFM as a novel green inhibitor, developing the highly efficient utilization of <em>Jatropha curcas.</em></div></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"518 ","pages":"Article 164643"},"PeriodicalIF":13.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144241704","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistic effect between Fe and Ni cations of LaFe1-xNixO3 perovskites enables efficient catalytic wet aerobic oxidation of corncob alkali lignin in base-free system to produce valuable aromatic aldehydes and acids","authors":"Wenqi Wang ,&nbsp;Yaohong Zhou ,&nbsp;Jiarong Zhu ,&nbsp;Yujing Jin ,&nbsp;Jinzhu Chen ,&nbsp;Chengguo Liu ,&nbsp;Jiliang Ma ,&nbsp;Xuliang Nie ,&nbsp;Peng Wang ,&nbsp;Yangping Wen ,&nbsp;Wanming Xiong ,&nbsp;Xiaohua Zhang","doi":"10.1016/j.cej.2025.164485","DOIUrl":"10.1016/j.cej.2025.164485","url":null,"abstract":"<div><div>The base-free oxidation of lignin into valuable aromatic chemicals is a promising pathway for biomass valorization. Developing efficient LaBO₃-based catalysts and elucidating the structure-activity relationship of B-site metal substitution is the key to improving the yield/selectivity of aromatic chemicals. In view of this, a series of LaFeO₃-based catalysts with different strengths of oxygen vacancies and acid-base sites were tailored by replacing high valence Fe ions with low valence Ni ions to varying degrees. Afterwards, these catalysts performance were tested for the wet aerobic oxidation of corncob alkali lignin (CAL) in individual alcohol or alcohol-water co-solvent system. Extraordinary catalytic performance was achieved when the Ni substitution degree was 0.8 in <em>i</em>PrOH-H₂O (<em>v</em>/v = 1:1) co-solvent system, affording a 14.52 % yield of six aromatic aldehydes and acids. Electron paramagnetic resonance (EPR) measurements and radical quenching experiments confirmed the involvement of ^•O₂⁻ and ^•OH radicals in CAL catalytic oxidation system. Mechanism studies pronounced that the oxidative dehydrogenation of C_αH-OH by ^•O₂⁻ that originated from O₂ adsorbed on oxygen vacancies of catalyst was the initially step. Subsequently, the formed C_αHO* was adsorbed on Fe^δ+ acidic active sites with strong oxygen affinity, while activating the cleavage of C_α-C_β, C_β-O-4 and C_β-C_γ linkages. Moreover, the existence of synergistic effect between Fe and Ni cations, where Fe⁴⁺ species obtaining electrons from Ni²⁺ species and transformed into Fe³⁺ species, resulting in an increase in oxygen vacancy concentration, thereby promoting the production of aromatic aldehydes and acids. This work provided fundamental guidance for a deeper understanding of the relationship between surface properties and activity to design efficient perovskite-based catalysts for lignin valorization.</div></div>","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"518 ","pages":"Article 164485"},"PeriodicalIF":13.3,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144243394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anchoring carbon shells encapsulated RuMn nanoparticles on N-doped carbon nanofibers for efficient hydrogen evolution reaction","authors":"Jibiao Guan, Jiadong Chen, Yingjing Zhu, Lina Wang, Baochun Guo, Yaqin Fu, Juan Wang, Ming Zhang","doi":"10.1016/j.cej.2025.164342","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164342","url":null,"abstract":"Understanding the core-shell structure of carbon-encapsulated alloys aids in enhancing catalyst stability. DFT simulations reveal that the intrinsic electric field of the alloy modulates carbon atom behavior, effectively lowering the Gibbs free energy required for water dissociation and hydrogen adsorption on the carbon surface. Carbon-encapsulated RuMn alloy nanoparticles supported on carbon nanofibers (RuMn/CNFs) was fabricated as self-supporting electrode materials to validate this conclusion via a synergistic electrospinning‑carbonization protocol. The rational design of Ru/Mn stoichiometric modulation synergized with carbon nanofiber's superior electrical conductivity and RuMn/CNFs' hydrophilic-hydrophobic dual functionality endows the catalyst with exceptional alkaline hydrogen evolution performance. Specifically, the optimized RuMn/CNFs achieves a remarkably low overpotential of 80 mV at 100 mA cm⁻² coupled with an Tafel slope of 46.3 mV dec⁻¹. Analysis of surface morphology, internal structure, and changes in metal ion concentration in the electrolyte over various hydrogen production times revealed that Mn atoms, with lower electronegativity, leach from the graphite carbon-encapsulated alloy core-shell structure, creating defects on the surface of the RuMn alloy core. Atomic-scale interfacial interactions between RuMn lattice defects and the carbon shell orchestrate two synergistic effects: (1) enhance the adsorption of water onto the carbon shell, and (2) a 47 % reduction in water dissociation energy barriers (DFT-calculated). This dual modulation drives ultrafast Volmer step kinetics, endowing RuMn/CNFs with a good activity enhancement over pristine counterparts at industrial current densities (2.3 V at 500 mA cm⁻²). This work establishes a mechanistic framework for understanding dynamic interface reconstruction in carbon-encapsulated electrocatalysts, offering critical insights into operando structural evolution patterns and active site generation mechanisms during sustained HER operation.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"12 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Advanced PDLC films with dual-responsive fluorescence and phosphorescence for multicolor pattern display, quadruple information encryption and anti-counterfeiting","authors":"Dongliang Yang, Xinlin Yao, Shuqing Wang, Yinfu Lu, Xi Chen, Du lv, Yuzhen Zhao, Zemin He, Huimin Zhang, Xin Du, Yi Luan, Dong Wang","doi":"10.1016/j.cej.2025.164466","DOIUrl":"https://doi.org/10.1016/j.cej.2025.164466","url":null,"abstract":"In recent years, polymer dispersed liquid crystals (PDLCs) have demonstrated remarkable application potential in the field of display, information encryption and anti-counterfeiting, but they still have the drawbacks of single color change, suboptimal contrast ratio (CR) and simple anti-counterfeiting modes. Herein, novel PDLC films with electro-optical dual-responsive fluorescence and phosphorescence are prepared to achieve multicolor pattern display and quadruple information encryption by using the strategy of combining phosphorescence and fluorescence with electrically responsive PDLC. The phosphorescent green (PG) and phosphorescent blue (PB) doped PDLC has high CR of 164 and 226. The color pattern display of PDLC is achieved by the electro-optical synergy effect of increasing or decreasing the excitation probability of the light emitting molecules through multiple scattering or transmission of ultraviolet (UV) light by electrically responsive PDLC. Fluorescent red (FLR) particles were incorporated into the PDLC films to augment the anti-counterfeiting ability of PDLC. Various shapes of PDLC films were prepared utilizing screen-printing method, which can manifesting multiple optical states of scattered (white), fluorescent (red), and phosphorescent (green and blue) colors under natural light, UV light, and UV light-off, respectively. Furthermore, a sophisticated PDLC (static + dynamic) anti-counterfeiting pattern with quadruple information encryption has been developed by taking advantage of the differences in the afterglow times of different concentrations and types of phosphorescent materials. The PDLC films additionally demonstrate utility in UV pattern printing. In conclusion, this work establishes a solid foundation for the development of future PDLC display, information encryption and anti-counterfeiting materials.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"6 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144238068","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}