Chinese Journal of Chemical Engineering最新文献

{"title":"Engineering graphene oxide and hydrogel coatings on fabrics for smart Janus textiles with superior thermal regulation","authors":"Weidong Wu ,&nbsp;Yukun Zeng ,&nbsp;Chen Zhou ,&nbsp;Xin Zhou ,&nbsp;Shengyang Yang","doi":"10.1016/j.cjche.2024.05.027","DOIUrl":"10.1016/j.cjche.2024.05.027","url":null,"abstract":"<div><p>Fabric multifunctionality offers resource savings and enhanced human comfort. This study innovatively integrates cooling, heating, and antimicrobial properties within a Janus fabric, surpassing previous research focused solely on cooling or heating. Different effects are achieved by applying distinct coatings to each side of the fabric. One graphene oxide (GO) coating exhibits exceptional light-to-heat conversion, absorbing and transforming light energy into heat, thereby elevating fabric temperature by 15.4 °C, 22.7 °C, and 43.7 °C under 0.2, 0.5, and 1 sun irradiation, respectively. Conversely, a hydrogel coating on one side absorbs water, facilitating heat dissipation through evaporation upon light exposure, reducing fabric temperature by 5.9 °C, 8.4 °C, and 7.1 °C in 0.2, 0.5, and 1 sun irradiation, respectively. Moreover, both sides of Janus fabric exhibit potent antimicrobial properties, ensuring fabric hygiene. This work presents a feasible solution to address crucial challenges in fabric thermal regulation, providing a smart approach for intelligent adjustment of body comfort in both summer and winter. By integrating heating and cooling capabilities along with antimicrobial properties, this study promotes sustainable development in textile techniques.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 1-12"},"PeriodicalIF":3.7,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141691094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Artificial intelligence-motivated in-situ imaging for visualization investigation of submicron particles deposition in electric-flow coupled fields","authors":"Shanlong Tao ,&nbsp;Xiaoyong Yang ,&nbsp;Wei Yin ,&nbsp;Yong Zhu","doi":"10.1016/j.cjche.2024.05.028","DOIUrl":"10.1016/j.cjche.2024.05.028","url":null,"abstract":"<div><p>This study delves into the intricate deposition dynamics of submicron particles within electric-flow coupled fields, underscoring the unique challenges posed by their minuscule size, aggregation tendencies, and biological reactivity. Employing an operando investigation system that synergizes microfluidic technology with advanced micro-visualization techniques within a lab-on-a-chip framework enables a meticulous examination of the dynamic deposition phenomena. The incorporation of object detection and deep learning methodologies in image processing streamlines the automatic identification and swift extraction of crucial data, effectively tackling the complexities associated with capturing and mitigating these hazardous particles. Combined with the analysis of the growth behavior of particle chain under different applied voltages, it established that a linear relationship exists between the applied voltage and <em>θ</em>. And there is a negative correlation between the average particle chain length and electric field strength at the collection electrode surface (4.2×10⁵ to 1.6×10⁶ V·m^–1). The morphology of the deposited particle agglomerate at different electric field strengths is proposed: dendritic agglomerate, long chain agglomerate, and short chain agglomerate.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 13-21"},"PeriodicalIF":3.7,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141696254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of Al(OH)3 prepared from fly ash on the structural and catalytic properties of g-C3N4-based materials","authors":"Qingbo Yu ,&nbsp;Xianhua Li ,&nbsp;Qingping Wang","doi":"10.1016/j.cjche.2024.05.026","DOIUrl":"10.1016/j.cjche.2024.05.026","url":null,"abstract":"<div><p>In order to find the optimal combination method of secondary utilization of fly ash and graphite-phase carbon nitride (g-C₃N₄) modification, an efficient composite photocatalyst of γ-Al₂O₃/g-C₃N₄ was obtained by calcining the composite precursors of Al(OH)₃/ dicyandiamide (DCDA). The introduction of Al(OH)₃ prepared by combining fly ash into the precursors causes hydrogen-bonding interactions between Al(OH)₃ and DCDA, which facilitate the removal of N atoms from the edges of the CN framework of g-C₃N₄ during condensation, and the composites prepared possess more cyano defects. In addition, γ-Al₂O₃ and g-C₃N₄ form a chemical bond at the interface, and this chemical bonding causes the density of the electron cloud in the vicinity of the N atoms to increase. Among them, the strongest chemical bonding between Al₂O₃ and g-C₃N₄ was observed in ACN-1, whereas the most cyanine defects were formed in ACN-1, which made ACN-1 exhibit the best photocatalytic degradation of methylene blue, which is 2.48 times higher than that of the pristine g-C₃N₄.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 44-51"},"PeriodicalIF":3.7,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141707753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 theoretical model to predict the rising trajectory of single bubble with zigzagging path in still water","authors":"Lubin Zhang ,&nbsp;Yongli Ma ,&nbsp;Mingyan Liu","doi":"10.1016/j.cjche.2024.06.008","DOIUrl":"10.1016/j.cjche.2024.06.008","url":null,"abstract":"<div><p>The rising motion of single bubble in still liquid is a natural phenomenon, which has high theoretical research significance and engineering application prospect. Experimental observations and numerical simulations for prediction of the rising trajectory of a single bubble in still liquid are being carried out, while the concise but accurate theoretical or mechanism model is still not well developed. In this article, a theoretical model of a single bubble based on experimental observation of flow around bluff body is proposed to predict the rising trajectory of zigzagging bubbles in still water. The prediction correlation of bubble lateral movement frequency and bubble steer angle are established based on three degrees of freedom frame. The model has achieved good trajectory prediction effect in the bubble rising experiment. The average simulation time per unit moving time of bubble is 2.5 s.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 190-202"},"PeriodicalIF":3.7,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mixing characteristics of three-cylinder valve-controlled energy recovery device based on liquid piston","authors":"Zheng Sun ,&nbsp;Zean Chen ,&nbsp;Weian Li ,&nbsp;Yue Wang ,&nbsp;Jing Yang","doi":"10.1016/j.cjche.2024.06.007","DOIUrl":"10.1016/j.cjche.2024.06.007","url":null,"abstract":"<div><p>The isobaric energy recovery device can significantly reduce the energy consumption of the seawater reverse osmosis system by recycling the residual pressure energy of high-pressure concentrated brine. Three-cylinder valve-controlled energy recovery device (TC-ERD) solves the fluid pulsation of traditional two-cylinder devices, but the use of a “liquid piston” exacerbates the mixing between brine and seawater. Herein, the evolutionary law of “liquid piston” and the relationship between volumetric mixing degree and operating conditions are explored. The results show that the “liquid piston” first axially expands and then gradually stabilizes, isolating the brine and seawater. Additionally, as long as the volume utilization ratio (<em>U</em>_R) of the pressure exchange cylinder remains constant, there will not be much difference in the volumetric mixing degree after stabilization of the “liquid piston” (<em>V</em>_m-max) regardless of changes in the processing capacity (<em>Q</em>) and cycle time (<em>T</em>₀). Therefore, the equation for <em>V</em>_m-max with respect to the operating parameters (<em>Q</em>, <em>T</em>₀) is derived, which can not only predict the <em>V</em>_m-max of the TC-ERD, but also provide an empirical reference for the design of other valve-controlled devices with “liquid piston”. When the <em>V</em>_m-max is 6%, the efficiency of the TC-ERD at design conditions (30 m³·h⁻¹, 5.0 MPa) is 97.53%.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 83-91"},"PeriodicalIF":3.7,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Defects-rich MgFe LDH: A high-capacity adsorbent for methyl orange wastewater","authors":"Chunmei Zhu ,&nbsp;Liting Zhang ,&nbsp;Chenyuan Cui ,&nbsp;Xin Lian ,&nbsp;Long Qu ,&nbsp;Bai He ,&nbsp;Guoyuan Yuan ,&nbsp;Jian Feng ,&nbsp;Siwei Xiang ,&nbsp;Bo Yu","doi":"10.1016/j.cjche.2024.06.006","DOIUrl":"10.1016/j.cjche.2024.06.006","url":null,"abstract":"<div><p>Dye pollution is a common pollutant in wastewater that poses a serious threat to human health. Layered double hydroxide (LDH) is a commonly used adsorbent for dye removal. However, its adsorption efficiency is significantly limited by the limited adsorption active sites of the adsorbent. In this paper, a defects-rich MgFe LDH adsorbent for anionic dye wastewater was synthesized by a simple hydrothermal method and alkaline etching. Different analytical techniques, such as XRD, FT-IR, SEM, TEM, XPS, and N₂ adsorption–desorption isotherm, were used to verify the chemical composition and surface characteristics of the materials, and the effects of pH, temperature, and contact time on the adsorption effect of methyl orange and the adsorption mechanism were analyzed. Alkaline etching of Al and Zn in the laminate generated defects that expose unsaturated coordination centers and create abundant adsorption sites, which can electrostatically attract and coordinate with dye ions. At 25 °C, the adsorption capacity of MgFe LDH with Al etched and MgFe LDH with Zn etched for methyl orange dye reached 1722 mg·g^–1 and 1685 mg·g^–1, respectively, much higher than that of MgFe LDH (544 mg·g^–1). This work provides a promising method for the removal of dye wastewater by adsorption and a new idea for the design and development of high-performance dye wastewater adsorbents.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"74 ","pages":"Pages 63-73"},"PeriodicalIF":3.7,"publicationDate":"2024-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141699923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Research methods and devices for hydrate characteristics during oil and gas transportation: A review","authors":"Jie Zhang ,&nbsp;Lei Shi ,&nbsp;Chuanxian Li ,&nbsp;Fei Yang ,&nbsp;Bo Yao ,&nbsp;Guangyu Sun","doi":"10.1016/j.cjche.2024.04.028","DOIUrl":"10.1016/j.cjche.2024.04.028","url":null,"abstract":"<div><p>Due to the high-pressure and low-temperature exploitation environment, the characteristics of hydrates are directly related to the safety of pipeline transportation, which is an important research topic for deep-sea flow assurance. In this review, six kinds of extensively used experimental equipment and three types of hot computer simulation methods, which are employed to explore the hydrate characteristics under deep-sea conditions, are comprehensively summarized, covering micro to macro research scales. The experimental equipment includes rotational rheometer, flow loop, high-pressure reactor, differential scanning calorimeter (DSC), micromechanical force (MMF) testing apparatus and microscopic morphology observation (MMO) device. The computer simulation methods involve numerical simulation, molecular dynamics (MD) simulation, Monte Carlo (MC) simulation and first-principles calculation. Their advantages and disadvantages are compared in detail, and their basic principles, main applications and the latest research progress are introduced. Some suggestions for future research methods are also provided. This work aims to help readers quickly grasp the characteristics of the most used research methods, choose suitable methods for their study and further expand these methods, so as to advance the development in hydrate research area.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"73 ","pages":"Pages 130-145"},"PeriodicalIF":3.7,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141696600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Four-channel catalytic micro-reactor based on alumina hollow fiber membrane for efficient catalytic oxidation of CO","authors":"Baichuan Xu,&nbsp;Bin Wang,&nbsp;Tao Li","doi":"10.1016/j.cjche.2024.03.024","DOIUrl":"10.1016/j.cjche.2024.03.024","url":null,"abstract":"<div><p>The traditional automotive catalytic converter using commercial ceramic honeycomb carriers has many problems such as high back pressure, low engine efficiency, and high usage of precious metals. This study proposes a four-channel catalytic micro-reactor based on alumina hollow fiber membrane, which uses phase inversion method for structural molding and regulation. Due to the advantages of its carrier, it can achieve lower ignition temperature under low noble metal loading. With Pd/CeO₂ at a loading rate of 2.3% (mass), the result showed that the reaction ignition temperature is even less than 160 °C, which is more than 90 °C lower than the data of commercial ceramic substrates under similar catalyst loading and airspeed conditions. The technology in turn significantly reduces the energy consumption of the reaction. And stability tests were conducted under constant conditions for 1000 h, which proved that this catalytic converter has high catalytic efficiency and stability, providing prospects for the design of innovative catalytic converters in the future.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"71 ","pages":"Pages 140-147"},"PeriodicalIF":3.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141025933","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synergistically constructed lamination-like network of redox-active polyimide and MXene via π-π interactions for aqueous NH4+ storage","authors":"Jing He ,&nbsp;Hongye Xuan ,&nbsp;Jing Jin ,&nbsp;Ke Yu ,&nbsp;Changyao Liyang ,&nbsp;Lintong Hu ,&nbsp;Minjie Shi ,&nbsp;Chao Yan","doi":"10.1016/j.cjche.2024.03.029","DOIUrl":"10.1016/j.cjche.2024.03.029","url":null,"abstract":"<div><p>As a nonmetallic charge carrier, ammonium ion (<span><math><mrow><msubsup><mtext>NH</mtext><mn>4</mn><mo>+</mo></msubsup></mrow></math></span>) has garnered significant attention in the construction of aqueous batteries due to its advantages of low molar mass, small hydration size and rapid diffusion in aqueous solutions. Polymers are a kind of potential electro-active materials for aqueous <span><math><mrow><msubsup><mtext>NH</mtext><mn>4</mn><mo>+</mo></msubsup></mrow></math></span> storage. However, traditional polymer electrodes are typically created by covering the bulky collectors with excessive additives, which could lead to low volume capacity and unsatisfactory stability. Herein, a nanoparticle-like polyimide (PI) was synthesized and then combined with MXene nanosheets to synergistically construct an additive-free and self-standing PI@MXene composite electrode. Significantly, the redox-active PI nanoparticles are enclosed between conductive MXene flakes to create a 3D lamination-like network that promotes electron transmission, while the π-π interactions existing between PI and MXene contribute to the enhanced structural integrity and stability within the composite electrode. As such, it delivers superior aqueous <span><math><mrow><msubsup><mtext>NH</mtext><mn>4</mn><mo>+</mo></msubsup></mrow></math></span> storage behaviors in terms of a notable specific capacity of 110.7 mA·h·cm^–3 and a long lifespan with only 0.0064% drop each cycle. Furthermore, <em>in-situ</em> Raman and UV–Vis examinations provide evidence of reversible and stable redox mechanism of the PI@MXene composite electrode during <span><math><mrow><msubsup><mtext>NH</mtext><mn>4</mn><mo>+</mo></msubsup></mrow></math></span> uptake/removal, highlighting its significance in the area of electrochemical energy storage.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"71 ","pages":"Pages 217-224"},"PeriodicalIF":3.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141036980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesoporous amorphous FeOOH-encapsulated BiO2–x photocatalyst with harnessing broad spectrum toward activation of persulfate for tetracycline degradation","authors":"Pengfei Wu ,&nbsp;Zhaolong Liu ,&nbsp;Li Wu ,&nbsp;Yingkun Zhang ,&nbsp;Bing Wang ,&nbsp;Zhanghao Cheng ,&nbsp;Wenquan Cui ,&nbsp;Xiangyang Lv ,&nbsp;Qingling Liu","doi":"10.1016/j.cjche.2024.03.027","DOIUrl":"10.1016/j.cjche.2024.03.027","url":null,"abstract":"<div><p>With the growing concern about the water environment, the advanced oxidation process of persulfate activation assisted by photocatalysis has attracted considerable attention to decompose dissolved organic micropollutants. In this work, to overcome the drawbacks of the photocatalytic activity reduction caused by the photo-corrosion of non-stoichiometric BiO_{2–<em>x</em>}, a novel material with amorphous FeOOH <em>in situ</em> grown on layered BiO_{2–<em>x</em>} to form a core-shell structure similar to popcorn chicken-like morphology was produced in two simple and environmentally beneficial steps. Through a series of degradation activity tests of hybrid materials under different conditions, the as-prepared materials exhibited remarkable degradation activity and stability toward tetracycline in the FeOOH@BiO_{2–<em>x</em>}/Vis/PS system due to the synergism of photocatalysis and persulfate activation. The results of XRD, SEM, TEM, XPS, FTIR, and BET show that the loading of FeOOH increases the specific surface area and active sites appreciably; the heterogeneous structure formed by FeOOH and BiO_{2–<em>x</em>} is more favorable to the effective separation of photogenerated carriers. The optimal degradation conditions were at a catalyst addition of 0.7 g·L^–1, a persulfate concentration of 1.0 g·L^–1, and an initial pH of 4.5, at which the degradation rate could reach 94.7% after 90 min. The influence of typical inorganic anions on degradation was also examined. ESR studies and radical quenching experiments revealed that ⋅OH, S<span><math><mrow><msubsup><mi>O</mi><mn>4</mn><mo>−</mo></msubsup><mo>⋅</mo></mrow></math></span>, and ⋅<span><math><mrow><msubsup><mi>O</mi><mn>2</mn><mo>−</mo></msubsup></mrow></math></span> were the principal active species generated during the degradation of tetracycline. The results of the 1,10-phenanthroline approach proved that the effect of dissolved iron ions on the tetracycline degradation was limited, and the interfacial reaction that occurs on the active sites on the material's surface was a critical factor. This work provides a novel method for producing efficient broad-spectrum Bismuth-based composite photocatalysts and photocatalytic-activated persulfate synergistic degradation of tetracycline.</p></div>","PeriodicalId":9966,"journal":{"name":"Chinese Journal of Chemical Engineering","volume":"71 ","pages":"Pages 235-248"},"PeriodicalIF":3.7,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141042484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}