Chemical Engineering Science最新文献_第9页

Rh/γ-Al2O3 catalyzed selective hydrogenation of dimethyl toluene-2,4-dicarbamate: mechanism and kinetics Rh/γ-Al2O3催化二甲基甲苯-2,4-二氨基甲酸酯选择性加氢：机理和动力学

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122641

Shiying Zhao, Hualiang An, Xinqiang Zhao, Yanji Wang

{"title":"Rh/γ-Al2O3 catalyzed selective hydrogenation of dimethyl toluene-2,4-dicarbamate: mechanism and kinetics","authors":"Shiying Zhao, Hualiang An, Xinqiang Zhao, Yanji Wang","doi":"10.1016/j.ces.2025.122641","DOIUrl":"10.1016/j.ces.2025.122641","url":null,"abstract":"<div><div>The selective hydrogenation of dimethyl toluene-2,4-dicarbamate (TDC) to methyl cyclohexyl-2,4-dicarbamate (HTDC) is an essential step for the green synthesis of methylcyclohexane-2,4-diisocyanate (HTDI). However, an unclear reaction mechanism and a lack of its reaction kinetics hamper the commercial development of the hydrogenation process. In this work, we investigated the selective hydrogenation of TDC over Rh/γ-Al<sub>2</sub>O<sub>3</sub> catalyst and focused on the reaction mechanism and kinetics. Firstly, the adsorption behavior of the reaction components on the surface of Rh/γ-Al<sub>2</sub>O<sub>3</sub> catalyst was studied using in situ DRIFTS technique. It was revealed that TDC and hydrogen are competitively adsorbed on the Rh surface but HTDC is adsorbed much more weakly compared with TDC. On this basis, the kinetics of TDC selective hydrogenation were probed based on the Langmuir-Hinshelwood mechanism. After optimizing kinetic parameters via a hybrid algorithm and selecting the optimal model through statistical discrimination, its consistency was confirmed with DRIFTS analysis results. The surface reaction involving the addition of the first hydrogen atom to the benzene ring was identified as the rate-determining step. Based on these, the kinetics of TDC selective hydrogenation catalyzed by Rh/γ-Al<sub>2</sub>O<sub>3</sub> were established with an activation energy of 48.1 kJ·mol<sup>−1</sup>. This work will provide a technical reference for the development of green route to HTDI synthesis, especially the selective hydrogenation of TDC to HTDC process.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122641"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling the Facilitation and Stabilization mechanisms of Oxygen-Rich coformers on cefmetazole sodium crystals 揭示富氧构象对头孢美唑钠晶体的促进和稳定机理

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122653

Yaoguang Feng , Xin Huang , Hui Wang , Di Wu , Na Wang , Ting Wang , Wei Chen , Jingtao Bi , Hongxun Hao

{"title":"Unveiling the Facilitation and Stabilization mechanisms of Oxygen-Rich coformers on cefmetazole sodium crystals","authors":"Yaoguang Feng , Xin Huang , Hui Wang , Di Wu , Na Wang , Ting Wang , Wei Chen , Jingtao Bi , Hongxun Hao","doi":"10.1016/j.ces.2025.122653","DOIUrl":"10.1016/j.ces.2025.122653","url":null,"abstract":"<div><div>Cefmetazole sodium (CMZS), which is a semisynthetic cephamycin derivative, has been developed for more than forty years. However, only its amorphous form is obtained and it is quite difficult to obtain its crystalline form. Herein, ethylene glycol (EG) and polyethylene glycol (PEG) were found to be effective coformers of CMZS for forming solvate crystals through hundreds of crystallization experiments. The crystal structures of the CMZS solvates were determined by single-crystal X-ray diffraction, and it was found that all these coformers participated in the coordination with sodium ions and a complex hydrogen bond network was established within the crystal structures. Furthermore, stability experiment results indicated that the CMZS-PEG crystals demonstrated superior humidity stability and high-temperature resistance in comparison to the amorphous. Finally, the crystallization mechanism was investigated and the results of conformational analysis, energy computations, as well as porosity and molecular volume assessments indicated that the highly flexible molecular conformation of CMZS and the coordination effect of sodium ions may be the primary reasons for its difficulty in crystallization. Accordingly, EG and PEG which possess high coordination efficiency, suitable molecular dimensions, and exceptional adaptability to various CMZS packing configurations, effectively facilitate the successful formation of crystalline CMZS solvates.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122653"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Breakup kinetics of water-in-water droplets without obstruction in Y-shaped microchannel y型微通道中无阻碍水包水滴破裂动力学

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122677

Zehui Shang , Yinan Liu , Chunying Zhu , Taotao Fu , Xiqun Gao , Youguang Ma

{"title":"Breakup kinetics of water-in-water droplets without obstruction in Y-shaped microchannel","authors":"Zehui Shang , Yinan Liu , Chunying Zhu , Taotao Fu , Xiqun Gao , Youguang Ma","doi":"10.1016/j.ces.2025.122677","DOIUrl":"10.1016/j.ces.2025.122677","url":null,"abstract":"<div><div>The breakup of water-in-water droplets in a Y-junction microchannel was experimentally investigated, focusing on the unobstructed breakup mode due to its broad applicability. This process was divided into four stages: entering, squeezing, pinch-off, and filament rupture, based on the evolution of the neck width and its thinning rate. In the entering stage, neck thinning accelerates with increasing dispersed-phase flow rate <em>Q</em><sub>d</sub>, droplet length <em>l</em><sub>0</sub>, and two-phase viscosity ratio <em>λ</em>, and slows down with increasing continuous-phase flow rate <em>Q</em><sub>c</sub>. In the squeezing stage, the minimum neck width follows a power-law relation with time. The thinning rate increases with higher <em>Q</em><sub>d</sub>, <em>l</em><sub>0</sub>, and <em>λ</em>, whereas increasing <em>Q</em><sub>c</sub> inhibits thinning. In the pinch-off stage, neck width decreases linearly with time, and the thinning is enhanced by higher <em>Q</em><sub>c</sub>, <em>Q</em><sub>d</sub>, and <em>l</em><sub>0</sub>, but remains nearly independent of <em>λ</em>. The filament rupture stage follows a power-law thinning trend, and exhibits similar parameter dependencies, though satellite droplets may form at high <em>Q</em><sub>d</sub> and <em>Q</em><sub>c</sub>, and show increased instability at low viscosity. These findings offer insights into neck dynamics and interfacial rupture in low interfacial tension systems.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122677"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

W-doping regulated the microenvironment of Ni2P@W-MoO2 composite electrocatalyst for driving ampere-level alkaline seawater splitting w掺杂调节Ni2P@W-MoO2复合电催化剂微环境，驱动安培级碱性海水分裂

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122672

Tingting Tang , Yutao Cao , Min Li , Shuo Cui , Ying Wu , Zhize Yu , Wei Cui , Hong Zhao

{"title":"W-doping regulated the microenvironment of Ni2P@W-MoO2 composite electrocatalyst for driving ampere-level alkaline seawater splitting","authors":"Tingting Tang , Yutao Cao , Min Li , Shuo Cui , Ying Wu , Zhize Yu , Wei Cui , Hong Zhao","doi":"10.1016/j.ces.2025.122672","DOIUrl":"10.1016/j.ces.2025.122672","url":null,"abstract":"<div><div>The rational construction of highly efficient electrocatalysts toward the hydrogen evolution reaction (HER) in alkaline electrolytes is critical for renewable energy technologies, but still challenging in seawater electrolysis at ampere-level current density. Herein, we design a nanoarray composite catalyst Ni<sub>2</sub>P@W-MoO<sub>2</sub> through one-step hydrothermal and post-phosphidation, which shows excellent catalytic activity for hydrogen evolution in all alkaline, simulated seawater and seawater electrolytes at ampere-level current density, with low overpotentials of 328, 352 and 364 mV, respectively. Furthermore, an overall urea-assisted water splitting electrolyzer obtained by using Ni<sub>2</sub>P@W-MoO<sub>2</sub> as the bifunctional catalyst can deliver a current density of 10 mA cm<sup>−2</sup> at a cell voltage of 1.36 V and operate stably for 100 h. <em>In situ</em> ATR-FTIR monitors the dynamic adsorption behavior of the important intermediate *OH on the surface of electrocatalysts. A series of density functional theory calculations further uncover the incorporation of W ameliorates the microenvironment of the MoO<sub>2</sub> and decreases the H<sub>2</sub>O/*OH adsorption/dissociation energy barriers, simultaneously optimizing the H* Gibbes free energy on the Ni<sub>2</sub>P, which achieves superior electrochemical water splitting performance. This work breaks through the proton-deficient dilemma of the alkaline HER at ampere-level current density and provides new insights into the design of cost-efficiency and environmentally friendly transition metal-based catalysts.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122672"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dezincification and ash reduction of waste tire pyrolysis carbon black via combined microwave heating − NaOH treatment 微波加热-氢氧化钠联合处理废轮胎热解炭黑脱锌降灰研究

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122671

Wang Chen , Bingguo Liu , Guolin Luo , Chao Yuwen , Fang Peng , Siyu Gong , Guangxiong Ji , Keren Hou , Zhenxing Yang , Yuhao Jing

{"title":"Dezincification and ash reduction of waste tire pyrolysis carbon black via combined microwave heating − NaOH treatment","authors":"Wang Chen , Bingguo Liu , Guolin Luo , Chao Yuwen , Fang Peng , Siyu Gong , Guangxiong Ji , Keren Hou , Zhenxing Yang , Yuhao Jing","doi":"10.1016/j.ces.2025.122671","DOIUrl":"10.1016/j.ces.2025.122671","url":null,"abstract":"<div><div>The high-value utilization of waste tire pyrolysis carbon black (CBp) is hindered by its high ash content, especially high zinc, sulfur and silicon content. However, the existing removal method generates a large amount of waste acid and alkali and fails to directly recover zinc. Based on the high-efficiency and green characteristics of microwaves, without the need to add additional reagents, this study efficiently removed and recovered zinc and sulfur by using the spontaneous reaction of substances inside the raw materials as well as the dissociation and regeneration of minerals. Moreover, sodium hydroxide (NaOH) was used to remove silicon. In this process, 99.94 % of zinc and 89.82 % of sulfur can be removed and recovered, and silicon is removed simultaneously. The fixed carbon content of CBp increased from 80.22 % to 94.02 %. The mechanism of dezincification and desulfurization via microwave treatment was investigated. It was found that CBp exhibits excellent dielectric properties, with a dielectric constant as high as 36.3 F/M. In the microwave field, the heat generated by the conductive polarization of carbon powder serves as the primary heat source for zinc and sulfur removal. During the entire process, zinc is removed in the form of ZnS and ZnO, while sulfur is removed as ZnS. Compared to conventional heating, microwave heating can achieve superior sulfur-removal and Zinc-removal efficiency at lower temperatures. The process offers a scalable, acid-free route for UNSDG-12 compliant valorisation of CBp, which is conducive to the effective utilization of solid waste resources.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122671"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of multi-component diffusion models in a single reactive particle 单一反应粒子中多组分扩散模型的比较

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122661

C.M.Y. Claassen , S. Tadayon Mousavi , M.W. Baltussen , E.A.J.F. Peters , J.A.M. Kuipers

{"title":"Comparison of multi-component diffusion models in a single reactive particle","authors":"C.M.Y. Claassen , S. Tadayon Mousavi , M.W. Baltussen , E.A.J.F. Peters , J.A.M. Kuipers","doi":"10.1016/j.ces.2025.122661","DOIUrl":"10.1016/j.ces.2025.122661","url":null,"abstract":"<div><div>Catalytic particles commonly appear in many multiphase reactors in the chemical industry. The transport-reaction behaviour in the particle has a significant impact on the overall reactor performance. In this work, the diffusive transport in the particle is modelled with the rigorous Maxwell-Stefan equations and simple Fick-Wilke diffusion. Several Fick—Wilke formulations are compared to the Maxwell—Stefan model for a ternary system with either a parallel or consecutive reaction scheme, considering variations in rate constants and binary diffusion coefficients. These include: (1) a formulation that resolves all components, (2) three variants in which one component is not resolved, and (3) a flux-corrected variant that enforces mass conservation. However, they are incapable of accurately capturing the whole range of behaviours or simultaneously capturing the effectiveness factor as well as the selectivity accurately. The study focuses on a simplified equimolar system to isolate the role of the diffusion closure; limitations, computational aspects of the Maxwell—Stefan formulation, and directions for future extensions are discussed.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122661"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hybrid model predictive and active disturbance rejection control for robust and efficient control of extractive distillation process 混合模型预测和自抗扰控制用于萃取精馏过程的鲁棒高效控制

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-23 DOI: 10.1016/j.ces.2025.122676

Fangkun Zhang, Zeng Li, Cuncheng Ma, Yunlong Wang, Shangkun Wang, Qilei Xu, Baoming Shan

{"title":"Hybrid model predictive and active disturbance rejection control for robust and efficient control of extractive distillation process","authors":"Fangkun Zhang, Zeng Li, Cuncheng Ma, Yunlong Wang, Shangkun Wang, Qilei Xu, Baoming Shan","doi":"10.1016/j.ces.2025.122676","DOIUrl":"10.1016/j.ces.2025.122676","url":null,"abstract":"<div><div>A robust and efficient advanced control system is crucial to ensure safe operation and improve the production efficiency of extractive distillation processes. To address the challenges posed by multi-variable, nonlinear, and coupled problems encountered in the extractive distillation process, a novel robust and efficient control strategy that fuses model predictive control (MPC) and active disturbance rejection control (ADRC) was proposed. The MPC control matrix was optimized using the multi-objective genetic algorithm, enhancing the control performance and robustness of the MPC. The ability to handle nonlinearity in the ADRC was enhanced by adopting a nonlinear error feedback control law, and the debugging process of the ADRC was simplified using a linear extended state observer. MPC and ADRC were fused based on weighted controllers. An evaluation based on the integral of squared error and integral of absolute error reveals that the MPC-ADRC fused control strategy demonstrates significantly superior dynamic control performance compared to other control structures, highlighting heightened robustness and stability. Thus, this study offers novel references and insights for the design and optimization of dynamic control strategies in extractive distillation processes.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122676"},"PeriodicalIF":4.3,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145127708","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Activation of peroxymonosulfate by in situ MgSiO3-Cu assembly catalyst for ciprofloxacin degradation in solution contaminated with ciprofloxacin and Cu2+ 原位MgSiO3-Cu组装催化剂对环丙沙星和Cu2+污染溶液中环丙沙星降解的活化作用

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-22 DOI: 10.1016/j.ces.2025.122664

Debin Jiang, Pan Zhou, Xue Long, Shenghong Yang, Na Li, Huijun Zhang, Tengtun Xu, Xiaoping Wang

{"title":"Activation of peroxymonosulfate by in situ MgSiO3-Cu assembly catalyst for ciprofloxacin degradation in solution contaminated with ciprofloxacin and Cu2+","authors":"Debin Jiang, Pan Zhou, Xue Long, Shenghong Yang, Na Li, Huijun Zhang, Tengtun Xu, Xiaoping Wang","doi":"10.1016/j.ces.2025.122664","DOIUrl":"10.1016/j.ces.2025.122664","url":null,"abstract":"<div><div>Herein, magnesium silicate particles were used as the carrier to develop an advanced oxidation technology predicated on <em>in-situ</em> assembled Cu-based catalysts for treating wastewater contaminated with ciprofloxacin(CIP) and Cu<sup>2+</sup> complexes. The results show that the synthesized MgSiO<sub>3</sub> has an amorphous structure with good cation exchange capacity for simultaneous Cu<sup>2+</sup> removal to <em>in situ</em> assembly MgSiO<sub>3</sub>-Cu catalyst and ciprofloxacin degradation in the mixture wastewater. The MgSiO<sub>3</sub>-Cu/Peroxymonosulfate(PMS) Fenton-like system exhibited the highest CIP removal ability with the initial pH = 7.0, PMS dosage of 0.06 g/L, and MgSiO<sub>3</sub>-Cu dosage of 0.4 g/L, and the CIP removal rate could reach up to 98 %. The possible degradation mechanism of CIP leads to a redox cycle between Cu (I) and Cu (II), resulting in the generation of hydroxyl radicals (•OH) and superoxide anions (<span><math><mrow><mo>·</mo><msubsup><mi>O</mi><mn>2</mn><mo>-</mo></msubsup></mrow></math></span>).</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122664"},"PeriodicalIF":4.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oily sludge carbon-based materials with gallic acid towards peroxymonosulfate activation for enhancing the degradation of p-nitrophenol 含油污泥碳基材料与没食子酸对过氧单硫酸盐活化增强对硝基苯酚的降解

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-22 DOI: 10.1016/j.ces.2025.122668

Jialian Xie, Ying Zhang, Yue Ran, Chaofan Tan, Hongqiang Yuan, Piwen He, Jie Long

{"title":"Oily sludge carbon-based materials with gallic acid towards peroxymonosulfate activation for enhancing the degradation of p-nitrophenol","authors":"Jialian Xie, Ying Zhang, Yue Ran, Chaofan Tan, Hongqiang Yuan, Piwen He, Jie Long","doi":"10.1016/j.ces.2025.122668","DOIUrl":"10.1016/j.ces.2025.122668","url":null,"abstract":"<div><div>The petroleum sphere’s handling and disposal of oily sludge presents serious obstacles to resource conservation and environmental preservation. Oily sludge (OS) was converted into carbon-based materials through pyrolysis, and their surface structure and crystal formation were investigated. Compared with systems without gallic acid (GA), the GA-assisted system significantly enhanced the degradation efficiency of p-nitrophenol (PNP) by OSC-800-activated peroxymonosulfate (PMS). The optimal catalytic degradation efficiency was observed at a GA concentration of 0.25 mM, achieving an 88.14 % degradation of PNP within 100 min. The observed reaction rate constants (K<sub>obs</sub>) increased by 2.42 times, the removal rate of COD improved by 1.65 times, and the utilization rate of potassium peroxymonosulfate rose by 2.90 times. Two key factors were identified that contributed to enhancement mechanism of GA in the OSC-800/GA/PMS system. Firstly, The Fe(II)/Fe(III) redox cycle on the catalyst’s surface was made easier by GA, which improved the production of active groups for PNP degradation. Secondly, GA sped up electron transfer, which increased the reaction rate. The study offers a novel method for employing reductants to improve the activation of permonosulfate by carbon-based materials.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122668"},"PeriodicalIF":4.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145116816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A molecular-based aggregation engineering strategy for high-efficiency deep-blue phosphors 高效深蓝色荧光粉的分子聚合工程策略

IF 4.3 2区工程技术

Chemical Engineering Science Pub Date : 2025-09-22 DOI: 10.1016/j.ces.2025.122667

Li Xu, Xinjian Cheng

{"title":"A molecular-based aggregation engineering strategy for high-efficiency deep-blue phosphors","authors":"Li Xu, Xinjian Cheng","doi":"10.1016/j.ces.2025.122667","DOIUrl":"10.1016/j.ces.2025.122667","url":null,"abstract":"<div><div>Deep-blue emissive phosphors play a crucial role in fabricating phosphor-converted light-emitting diodes (pc-LEDs). Although solid-state luminescence technology has made significant progress, challenges still remain in achieving high-efficiency emission in the deep-blue spectral region. In this work, through spatial rigidity engineering to suppress the non-radiative transition process, we developed a highly efficient deep-blue emission system. In this system, boric acid (BA) was used as the matrix and 1-naphthoic acid (NAPA), an aggregation-induced emission (AIE) molecule, was employed as the fluorophore. By the incorporation of electron donor o-phenylenediamine (OPD) into the system promoted a transition of NAPA from J-aggregation to H-aggregation, effectively broadening the tunable range of fluorescence emission spectra. It’s found that the synergistic effects of hydrogen bonding interactions and the AIE mechanism enabled continuously tunable luminescent materials within the deep-blue range (406 nm to 430 nm), with a maximum quantum yield (QY) of 89.1 %. Exciting the deep-blue phosphor with a 365 nm chip resulted in bright blue light with CIE chromaticity coordinates of (0.155, 0.071) under a drive current of 60 mA. This study introduces a simple and universal method to fabricate solid-state phosphors with emission-tunable properties via molecule-based aggregation engineering, effectively overcoming the limitations of spectral rigidity and poor adaptability to diverse application scenarios in current deep-blue materials.</div></div>","PeriodicalId":271,"journal":{"name":"Chemical Engineering Science","volume":"320 ","pages":"Article 122667"},"PeriodicalIF":4.3,"publicationDate":"2025-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145103836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0