Korean Journal of Chemical Engineering最新文献_第10页

Modified Sucrose Biochar Goethite (α-FeOOH): A Potential Adsorbent for Methylene Blue Removal 改性蔗糖生物炭沸石（α-FeOOH）：去除亚甲基蓝的潜在吸附剂

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-23 DOI: 10.1007/s11814-024-00237-8

Van-Truc Nguyen, Nguyen Duy Dat, Quoc-Hoang Do, Vu-Anh Le, Quoc-Minh Truong, Thanh-Binh Nguyen, Anh Thi Kim Tran, My Linh Nguyen, Nhung Thi-Tuyet Hoang, Tran Thi Ai My, Thi-Dieu-Hien Vo

{"title":"Modified Sucrose Biochar Goethite (α-FeOOH): A Potential Adsorbent for Methylene Blue Removal","authors":"Van-Truc Nguyen, Nguyen Duy Dat, Quoc-Hoang Do, Vu-Anh Le, Quoc-Minh Truong, Thanh-Binh Nguyen, Anh Thi Kim Tran, My Linh Nguyen, Nhung Thi-Tuyet Hoang, Tran Thi Ai My, Thi-Dieu-Hien Vo","doi":"10.1007/s11814-024-00237-8","DOIUrl":"10.1007/s11814-024-00237-8","url":null,"abstract":"<div><p>The primary purpose of this study is to synthesize biochar (Fe-SB) derived from sucrose through hydrothermal carbonization coupling with goethite activation and utilize it as an adsorbent to remove methylene blue (MB). FTIR, SEM, and BET were used to analyze the biochar characterization. Factors affecting the adsorption of MB on Fe-SB, including temperature, pH, salt, and different water sources, were also meticulously investigated. SEM results indicate that the morphology of the biochar derived from sucrose has a spherical shape, and the goethite crystal has a needle-like structure that successfully deposits on the adsorbent. The specific surface area of Fe-SB is 568 m<sup>2</sup>/g and contains enormous functional groups of O–H, C = C, and C–O. In the condition of pH 8, Fe-SB had a maximum adsorption capability of 476.2 mg/g. The adsorption capacity of biochar for MB removal consists of various adsorption mechanisms. In conclusion, Fe-SB, a novel material, pinpoints a promising and environmentally friendly adsorbent for the removal of MB from aquatic environment.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 11","pages":"3127 - 3138"},"PeriodicalIF":2.9,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213143","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Correction: Enhanced CO2 Sequestration Strategy Using CO2 Capturing Material Synthesized from Spent Railway Tie Concrete 更正：利用废旧铁轨轨枕混凝土合成的二氧化碳捕集材料强化二氧化碳封存战略

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-22 DOI: 10.1007/s11814-024-00261-8

Hyung-Jun Jang, Gyubin Lee, Heeji Yoo, Jae-Young Lee, Hye-Jin Hong

引用次数: 0

A CPFD Simulation on Hydrodynamics of Carbon Nanotube Aggregates in a Fluidized Bed 流化床中碳纳米管聚集体流体力学的 CPFD 模拟

IF 2.7 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-19 DOI: 10.1007/s11814-024-00257-4

Suyoung Kim, Min Ji Lee, Ye Ji Chang, Yujin Go, Geunhye Won, Sung Won Kim

{"title":"A CPFD Simulation on Hydrodynamics of Carbon Nanotube Aggregates in a Fluidized Bed","authors":"Suyoung Kim, Min Ji Lee, Ye Ji Chang, Yujin Go, Geunhye Won, Sung Won Kim","doi":"10.1007/s11814-024-00257-4","DOIUrl":"https://doi.org/10.1007/s11814-024-00257-4","url":null,"abstract":"<p>A computational particle–fluid dynamics (CPFD) model of a fluidized bed reactor with carbon nanotube (CNT, <i>d</i><sub><i>p</i></sub> = 485 μm) particles was established. A drag model and coefficient were determined to simulate the hydrodynamic behavior of CNTs in a fluidized bed. The drag coefficient reflected the variation in physical properties owing to CNT agglomeration, such as aggregate size distribution, particle circularity, and apparent density. The Richardson–Davidson–Harrison model with a drag coefficient of 0.17 was chosen based on results on solid holdup distribution. The proposed CPFD model described hydrodynamic behaviors, such as bed expansion, solid holdup distribution, and relative standard deviation (RSD) of the pressure drop with gas velocity, and predicted the transition gas velocity between the partial and complete fluidization regimes. The bed expansion and RSD gradually increased with increasing gas velocity in the partial fluidization regime and rapidly increased at the beginning of the complete fluidization regime. The increased gas velocity significantly enhanced bed expansion and particle entrainment, resulting in the formation of large CNT aggregates and a higher solid holdup in the freeboard in the complete fluidization regime. The simulated results describe the behavior of CNT aggregates near the bed surface and in the freeboard region, supporting previous findings in the literature. Uneven local gas flows occurred in the bed and freeboard regions, and the results described the bubbling bed characteristics in the complete fluidization regime.</p>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"23 1","pages":""},"PeriodicalIF":2.7,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Nanoparticle Doped Polymers for Radiation Shielding: A Review 掺杂纳米粒子的辐射屏蔽聚合物：综述

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-18 DOI: 10.1007/s11814-024-00256-5

Anupama V. Joshi, K. Shastry, Gagana Velur, Bhoomika R. Holla

{"title":"Nanoparticle Doped Polymers for Radiation Shielding: A Review","authors":"Anupama V. Joshi, K. Shastry, Gagana Velur, Bhoomika R. Holla","doi":"10.1007/s11814-024-00256-5","DOIUrl":"10.1007/s11814-024-00256-5","url":null,"abstract":"<div><p>Radiation-shielding is essential in fields involving storage and transport of radiation active material, such as medicine and nuclear engineering. The risk of radiation spill is a source of constant concern with its potential impact on local environment and life. Radiation spills that occur in laboratory are considered minor and containment of radiations in such cases using conventional techniques is not practical. Current practice involves using a suitable chemical absorbent, cleaning the spill region using agents and requires monitoring the spill region regularly for activity. Although this technique is effective in managing minor/laboratory grade spills, it requires careful application and constant monitoring before the area can be deemed safe for work. In this paper, we provide a detailed review of the radiation-shielding properties of polymer nanocomposites and their fabrication. The paper outlines radiation-shielding mechanisms, measurement of radiation attenuation, and factors that influence radiation attenuation. The review also compares analytical attenuation measurement methods against experimental methods. This review would be helpful in not only understanding the underlying energy transfer mechanism, but also aid in exploring polymer nano-composite materials as a viable green option for containing medium to low-level radiation spills.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 11","pages":"2985 - 3003"},"PeriodicalIF":2.9,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Wet Chemistry Methods for Synthesizing High-Entropy Nanoparticles: A Review of the Synthesis Strategies and Various Applications 合成高熵纳米颗粒的湿化学方法：合成策略与各种应用综述

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-18 DOI: 10.1007/s11814-024-00249-4

Hyeonseok Lee, Heesoo Jeong, Wooseok Jeong, Yun Jae Hwang, Boeun An, Yeongbin Lee, Gyuhyeon Kim, Don-Hyung Ha

{"title":"Wet Chemistry Methods for Synthesizing High-Entropy Nanoparticles: A Review of the Synthesis Strategies and Various Applications","authors":"Hyeonseok Lee, Heesoo Jeong, Wooseok Jeong, Yun Jae Hwang, Boeun An, Yeongbin Lee, Gyuhyeon Kim, Don-Hyung Ha","doi":"10.1007/s11814-024-00249-4","DOIUrl":"10.1007/s11814-024-00249-4","url":null,"abstract":"<div><p>High-entropy nanoparticles (HE-NPs) have recently gained considerable attention owing to their potential to yield several materials with unique characteristics due to the homogeneous mixing of five or more elements. The complexity of HE-NPs leads to electronic hybridization, lattice distortion, and sluggish diffusion effects, all of which contribute to their performance and stability. The formation of HE-NPs is thermodynamically limited, particularly by enthalpic factors. To overcome these limitations and design intricate nanostructures, wet chemistry can be employed as a relatively straightforward synthesis method. This review provides an overview of HE-NPs, including their definition, thermodynamic principles, and wet-chemical synthesis methods. It further explores the diverse range of applications of HE-NPs and examines how specific nanoparticle morphologies and compositions can be tailored efficiently using various synthesis strategies. Additionally, this review discusses case studies presenting optimized HE-NPs for individual applications, demonstrating their high performance. By identifying the key factors that contribute to their superior performance, this review offers valuable insights into future research directions for HE-NPs.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 13","pages":"3371 - 3393"},"PeriodicalIF":2.9,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Recovery of Cobalt from Cathode of Lithium-Ion Battery Using Ternary Deep Eutectic Solvent 利用三元深共晶溶剂回收锂离子电池阴极中的钴

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-18 DOI: 10.1007/s11814-024-00253-8

Xin Li, Yin Li, Qian Qiao, Kun Wang, Honghao Yu

{"title":"Recovery of Cobalt from Cathode of Lithium-Ion Battery Using Ternary Deep Eutectic Solvent","authors":"Xin Li, Yin Li, Qian Qiao, Kun Wang, Honghao Yu","doi":"10.1007/s11814-024-00253-8","DOIUrl":"10.1007/s11814-024-00253-8","url":null,"abstract":"<div><p>A new ternary deep eutectic solvents, consisting of choline chloride, ethylene glycol, and benzoic acid, were designed for efficient leaching of valuable metals from lithium oxide of spent lithium-ion batteries. The influence of experiment parameters on the leaching of cobalt was systematically investigated and optimized by response surface methodology. The leaching kinetics were elucidated in detail. The leaching efficiency of cobalt reached almost 100%, when the temperature was 443.15 K, the time of 3 h, and the molar ratio of the choline chloride: ethylene glycol: benzoic acid of 1:1.6:0.4. The kinetics of Co leaching showed good agreement to the shrinking core model, in which the diffusion of solid product layers was the limiting step, and the apparent activation energy was about 77.22 kJ/mol. Infrared spectroscopy indicated that hydrogen donors provided multiple ligands to facilitate the solubilization of cobalt. The SEM analysis of the leachates showed that the edge of particles changed significantly, the particle size decreased, and the dissolution process appeared. The simultaneous realization of high efficiency green process is expected to bring the DES into practical application for recovery of cathode from spent lithium-ion batteries.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 12","pages":"3151 - 3161"},"PeriodicalIF":2.9,"publicationDate":"2024-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Advances in Colloidal Quantum Dot-Based Displays for QLEDs and Patterning Applications 基于胶体量子点的 QLED 显示器和图案化应用的进展

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-17 DOI: 10.1007/s11814-024-00251-w

Awais Ali, Seongkeun Oh, Woosik Kim, Soong Ju Oh

{"title":"Advances in Colloidal Quantum Dot-Based Displays for QLEDs and Patterning Applications","authors":"Awais Ali, Seongkeun Oh, Woosik Kim, Soong Ju Oh","doi":"10.1007/s11814-024-00251-w","DOIUrl":"10.1007/s11814-024-00251-w","url":null,"abstract":"<div><p>Various display devices utilize colloidal quantum dots (QDs) for photoluminescent (PL) and electroluminescent (EL) applications owing to their exceptional optical properties, including sharp emission bandwidths, tunable emissions spectra, and photoluminescence quantum yields approaching unity. Since the commercialization of PL-based devices, researchers have shifted focus to the commercialization of EL-based devices and patterning processes. Over the past decade, the performance of EL devices has been dramatically enhanced through the meticulous optimization of the device architecture. In addition, solution-based QD patterning techniques have advanced, offering methods that minimize damage to the coated QDs while preserving their intrinsic properties effectively. Recent innovations include the development of ink formulations that improve the stability of QDs under ambient conditions and the use of photolithographic and soft lithographic techniques to achieve high-resolution patterning. This article reviews the recent advancements in various EL-based devices and solution-based methods for QD patterning, highlighting their potential to enable more complex, multi-color displays, and their implications for next-generation consumer electronics.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 13","pages":"3545 - 3560"},"PeriodicalIF":2.9,"publicationDate":"2024-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 Critical Review of Ultrafast Charging Dual-Ion Batteries 对超快充电双离子电池的严格审查

IF 2.7 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-16 DOI: 10.1007/s11814-024-00255-6

Jin Jun Heo, Jaegeon Ryu

引用次数: 0

Scalable Ammonia Synthesis in Fermentors Using Quantum Dot-Azotobacter vinelandii Hybrids 利用量子点-醋兰氮杂菌在发酵罐中进行可扩展的氨合成

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-13 DOI: 10.1007/s11814-024-00225-y

Jayeong Kim, Byunghyun Lee, Gui-Min Kim, Ilsong Lee, Sang Yup Lee, Kyeong Rok Choi, Doh C. Lee

{"title":"Scalable Ammonia Synthesis in Fermentors Using Quantum Dot-Azotobacter vinelandii Hybrids","authors":"Jayeong Kim, Byunghyun Lee, Gui-Min Kim, Ilsong Lee, Sang Yup Lee, Kyeong Rok Choi, Doh C. Lee","doi":"10.1007/s11814-024-00225-y","DOIUrl":"10.1007/s11814-024-00225-y","url":null,"abstract":"<div><p>This study introduces a scalable synthesis of ammonia through photochemical reactions, wherein nitrogen-fixing bacterial cells, <i>Azotobacter vinelandii</i> (<i>A. vinelandii</i>), form hybrids with colloidal quantum dots (QDs). Irradiation of the QD-<i>A. vinelandii</i> hybrids with visible light is found to significantly enhance ammonia production efficiency. The inherently low ammonia conversion rate of wild-type <i>A. vinelandii</i> is substantially increased upon incorporation of QDs. This increase is attributed to the electron transfer from QDs within the bacterial cells to intracellular bio-components. Transferring this chemistry to a large-scale reaction presents a tremendous challenge, as it requires precise control over the growth conditions. We explore the scalability of the QD-<i>A. vinelandii</i> hybrids by conducting the photochemical reaction in a 5-L fermentor under various parameters, such as dissolved oxygen, nutrient supply, and pH. Interestingly, ammonia was produced in media depleted of carbon sources. Consequently, a two-step fermentation process was designed, enabling effective ammonia production. Our findings demonstrate that the QD-<i>A. vinelandii</i> hybrid system in a bioreactor setup achieves an ammonia turnover frequency of 11.96 s<sup>−1</sup>, marking a more than sixfold increase in efficiency over that of nitrogenase enzymes alone. This advancement highlights the potential of integrating biological and nanotechnological elements for scalable ammonia production processes.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"41 13","pages":"3593 - 3601"},"PeriodicalIF":2.9,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s11814-024-00225-y.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Improvements in Photoluminescence Efficiency and Stability of CsPbBr3 Nanocrystals Through 3-Aminopropyltriethoxysilane Treatment 通过 3-氨基丙基三乙氧基硅烷处理提高 CsPbBr3 纳米晶体的光致发光效率和稳定性

IF 2.9 4区工程技术

Korean Journal of Chemical Engineering Pub Date : 2024-08-12 DOI: 10.1007/s11814-024-00252-9

Seung-Beom Cho, Min-Jae Kim, Il-Kyu Park

{"title":"Improvements in Photoluminescence Efficiency and Stability of CsPbBr3 Nanocrystals Through 3-Aminopropyltriethoxysilane Treatment","authors":"Seung-Beom Cho, Min-Jae Kim, Il-Kyu Park","doi":"10.1007/s11814-024-00252-9","DOIUrl":"10.1007/s11814-024-00252-9","url":null,"abstract":"<div><p>A representative metal halide perovskite, CsPbX<sub>3</sub>, has received much attention for its high photoluminescence (PL) efficiency and broad emission spectral range covering ultraviolet to infrared. Even with the focused investigations, they still suffer from poor emission stability from surface-induced defects. The inherent instability of perovskites is caused by moisture in the ambient, which leads to a reduction in the luminescence efficiency and deterioration of emission stability. In this study, we report a method to annihilate the surface defects in CsPbBr<sub>3</sub> nanocrystals (NCs), which enhances their photoluminescence efficiency by forming a SiO<sub>x</sub> shell structure using a 3-aminopropyltriethoxysilane (APTES). The APTES was treated during the synthesis of CsPbBr<sub>3</sub> NCs through supersaturation and re-precipitation processes. The optical investigations confirmed that the PL intensity and emission stability of the CsPbBr<sub>3</sub> NCs improved with the APTES treatment. The structural investigations using X-ray diffraction and transmission electron microscopy showed that optical analysis was carried out through photoluminescence and laser optical analysis using lasers at 400 nm and 365 nm wavelengths. These findings present an innovative solution to the instability issues of CsPbBr<sub>3</sub> and suggest possibilities for its utilization in various application fields. Future research should focus on further understanding the scalability of this method and its practical applicability.</p></div>","PeriodicalId":684,"journal":{"name":"Korean Journal of Chemical Engineering","volume":"42 1","pages":"81 - 88"},"PeriodicalIF":2.9,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142213198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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