Frontiers of Chemical Science and Engineering最新文献

Nitrogen-enriched pyrolysis and catalytic pyrolysis of municipal sludge extract

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-03-03 DOI: 10.1007/s11705-025-2531-8

Wenjie Ji, Lihui Zhang, Feng Duan

{"title":"Nitrogen-enriched pyrolysis and catalytic pyrolysis of municipal sludge extract","authors":"Wenjie Ji, Lihui Zhang, Feng Duan","doi":"10.1007/s11705-025-2531-8","DOIUrl":"10.1007/s11705-025-2531-8","url":null,"abstract":"<div><p>Municipal sludge (MS) extract obtained by degradative solvent extraction has the typical fuel characteristics of high nitrogen content, zero moisture, and low ash, which is suitable for producing valuable nitrogen-containing chemicals. This study compared the nitrogen-rich pyrolysis characteristic of MS extracts using thermogravimetric/thermogravimetric-mass spectrometry/pyrolysis-gas chromatography-mass spectrometry. The composition of bio-oil from catalytic pyrolysis of MS extracts with HZSM-5 was studied, and the pyrolysis kinetic models was established. The results show that different from the raw MS pyrolysis, the MS extracts pyrolysis all had two main peaks with similar values in the range of 140–530 °C (Stage L and Stage W). NH<sub>3</sub> is mainly released in the range of 140–370 °C (Stage L), and the nitrogen-containing compounds content in the bio-oil in this stage is 41.81%. After adding HZSM-5, the weight loss rate in Stage L decreased by 21.97%, while that in Stage W increased by 10.04%. An obvious weight loss peak (30.32%) appeared at the temperature of 530–900 °C, which is due to the increased fixed carbon content (increased by 16.07%) of the bio-oil from catalytic pyrolysis. The number of components in the nitrogen-containing compounds decreases much, however, its yield increases by 9.45% due to the transformation of nitrogen by the catalyst effect of HZSM-5 adding.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553844","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}

引用次数: 0

Preparation of TiO2@MCC modified PA6 composite membranes and their water-oil separation performance

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-03-01 DOI: 10.1007/s11705-025-2530-9

Pengcheng Hu, Aonan Lai, Shufeng Zhou

{"title":"Preparation of TiO2@MCC modified PA6 composite membranes and their water-oil separation performance","authors":"Pengcheng Hu, Aonan Lai, Shufeng Zhou","doi":"10.1007/s11705-025-2530-9","DOIUrl":"10.1007/s11705-025-2530-9","url":null,"abstract":"<div><p>Using the chemically stable and cost-effective nylon PA6 as a substrate with the help of the high hydrophilicity of microcrystalline cellulose (MCC) and TiO<sub>2</sub> nanoparticles to build micro-nanostructures on the surface of the nylon PA6, the superhydrophilic and underwater oleophobic composite membrane was fabricated to achieve the high efficiency of water-oil separation. TiO<sub>2</sub> nanoparticles wrapped in MCC were evenly dispersed on the composite membrane, and the pore size of the composite membrane decreased with increasing MCC mass fraction. MCC can be tightly bound to the surface of the PA6 membrane because of its excellent film-forming properties and ability to cross-link with PA6. The modification of TiO<sub>2</sub> and MCC led to a reduction in the surface adhesion of the composite membrane to oil droplets. The separation efficiency of the composite membrane for water-oil emulsions followed the order TiO<sub>2</sub>@2MCC-PA6 > TiO<sub>2</sub>@MCC-PA6 > TiO<sub>2</sub>-PA6 > PA6, and the change in filtration flux was exactly the opposite. TiO<sub>2</sub>@MCC-PA6 was the best composite membrane for three water-oil emulsions with sodium dodecyl sulfate (SDS), and its separation efficiency was over 96%. The water contact angle and underwater oil contact angle of TiO<sub>2</sub>@MCC-PA6 changed slightly after it was immersed in acidic and alkaline solutions for 36 h. The filtration flux and separation efficiency of TiO<sub>2</sub>@MCC-PA6 for <i>n</i>-hexane/SDS/water were still above 3100 L·m<sup>−2</sup>·h<sup>−1</sup>·bar<sup>−1</sup> and 93%, respectively, after 50 cycles.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553749","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}

引用次数: 0

Fe/Ru synthesized by hydrothermal deposition on hyper-crosslinked polystyrene as promising Fischer-Tropsch catalyst

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-02-26 DOI: 10.1007/s11705-025-2529-2

Mariia E. Markova, Antonina A. Stepacheva, Alexey V. Bykov, Yurii V. Larichev, Valentin Y. Doluda, Mikhail G. Sulman, Lioubov Kiwi-Minsker

{"title":"Fe/Ru synthesized by hydrothermal deposition on hyper-crosslinked polystyrene as promising Fischer-Tropsch catalyst","authors":"Mariia E. Markova, Antonina A. Stepacheva, Alexey V. Bykov, Yurii V. Larichev, Valentin Y. Doluda, Mikhail G. Sulman, Lioubov Kiwi-Minsker","doi":"10.1007/s11705-025-2529-2","DOIUrl":"10.1007/s11705-025-2529-2","url":null,"abstract":"<div><p>In this work, Fe/Ru-catalyst supported on hyper-crosslinked polystyrene (HPS) synthesized via hydrothermal deposition was proposed for the Fischer-Tropsch synthesis (FTS) to obtain a high yield of gasoline-ranged hydrocarbons. According to the characterization results, the obtained monometallic 2%Fe-HPS catalyst contains Fe<sub>3</sub>O<sub>4</sub> particles with a multimodal distribution (mean particle size of 11, 30, and 45 nm). The addition of Ru leads to a decrease in the particle size with a narrower distribution (ca. 5 nm). Ru was shown to serve as a nucleating agent for Fe<sub>3</sub>O<sub>4</sub> crystalline since it has a higher affinity to the HPS surface and strongly anchors to the benzene rings of the polymer. This prevents a leaching of the active phase from the support increasing the catalyst stability. Ru addition also brings supplemental sites for CO and H<sub>2</sub> chemisorption resulting in 1.5-fold increased activity in FTS reaction compared to monometallic 2%Fe-HPS composite. 2%Fe-1%Ru-HPS composite showed ∼20% higher selectivity toward the formation of C<sub>5</sub>–C<sub>11</sub> alkanes at about 30% conversion of CO in comparison with monometallic one. Moreover, the branched hydrocarbons with a selectivity of approximately 17.5 mol% were observed in the FTS products in the presence of a 2%Fe-1%Ru-HPS catalyst.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513193","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}

引用次数: 0

Developing indium-oxide based catalysts for efficient hydrogenation of carbon dioxide to methanol: a mini-review

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-13 DOI: 10.1007/s11705-025-2521-x

Yuxin Wang, Na Yang, Zeshan Wang, Dong Tian, Hua Wang, Kongzhai Li

{"title":"Developing indium-oxide based catalysts for efficient hydrogenation of carbon dioxide to methanol: a mini-review","authors":"Yuxin Wang, Na Yang, Zeshan Wang, Dong Tian, Hua Wang, Kongzhai Li","doi":"10.1007/s11705-025-2521-x","DOIUrl":"10.1007/s11705-025-2521-x","url":null,"abstract":"<div><p>While the use of fossil fuels has contributed to the progress and development of human society, the huge amount of CO<sub>2</sub> is emitted, which has led to the deterioration of the ecological environment. Converting CO<sub>2</sub> into valuable methanol is a key strategy for its utilization. In<sub>2</sub>O<sub>3</sub> catalyst has attracted much attention due to its high selectivity and performance in methanol production. This paper reviews the structural characteristics, catalytic sites and pathways of In<sub>2</sub>O<sub>3</sub>, and the latest research progress of In<sub>2</sub>O<sub>3</sub>-based catalysts in CO<sub>2</sub> hydrogenation to methanol. Moreover, the review outlines various strategies to enhance In-based catalysts, including: (I loading metal particles to promote H<sub>2</sub> dissociation, (II) formation of metal-In<sub>2</sub>O<sub>3</sub> interfaces to enhance CO<sub>2</sub> adsorption, (III) bimetallic catalysts to improve catalytic kinetics, (IV) combining In<sub>2</sub>O<sub>3</sub> with metal oxides to stabilize surface oxygen vacancies, (V) constructing solid-solution catalysts, and (VI) combining with other catalysts to construct composite catalysts, etc. In<sub>2</sub>O<sub>3</sub>-based catalysts have broad application prospects in the field of CO<sub>2</sub> hydrogenation to methanol. Through various structural and principle innovations, it is expected to improve the comprehensive performance and provide theoretical guidance for catalyst design.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423002","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}

引用次数: 0

Multiperiod optimization of closed seawater circulating cooling water system 闭式海水循环冷却水系统的多周期优化

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI: 10.1007/s11705-025-2520-y

Yihui Wang, Tingting Zhao, Wei Gao, Yufei Wang

{"title":"Multiperiod optimization of closed seawater circulating cooling water system","authors":"Yihui Wang, Tingting Zhao, Wei Gao, Yufei Wang","doi":"10.1007/s11705-025-2520-y","DOIUrl":"10.1007/s11705-025-2520-y","url":null,"abstract":"<div><p>Traditional open circulating cooling water systems use a lot of water and electricity to remove waste heat. In coastal areas, closed seawater circulating cooling water systems have been used as an alternative to improve cooling efficiency. However, a comprehensive comparison of the design and advantages of the two types of cooling systems is lacking. Also, the best way to match and optimize the seawater system with the circulating water system in the closed seawater circulating cooling water system has not been fully explored. In this paper, a closed seawater cooling system under multiperiod is constructed, taking into account monthly changes in environmental factors. The mixed integer nonlinear programming model is solved by using GAMS software to evaluate and compare the economics and operability of the two cooling schemes. Meanwhile, the matching relationship of the internal subsystems of the closed seawater circulating cooling water system after coupling the air coolers is studied in depth, and the cooling load is allocated reasonably. The cases show that seawater cooling saves 9.22% of circulating water and reduces the total cost by 8.93% compared with cooling tower. The cost of the closed seawater cooling system can be reduced by 24.37% after coupling air coolers, and there is a direct corresponding matching relationship between circulating water and seawater.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142963051","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}

引用次数: 0

Construction of CS@APP@UiO-66 through self-assembly technology as flame retardant and smoke suppressant for epoxy resins

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI: 10.1007/s11705-025-2526-5

Siqing Shao, Liping Jin, Siyuan He, Yijing Feng, Wenwen Guo

{"title":"Construction of CS@APP@UiO-66 through self-assembly technology as flame retardant and smoke suppressant for epoxy resins","authors":"Siqing Shao, Liping Jin, Siyuan He, Yijing Feng, Wenwen Guo","doi":"10.1007/s11705-025-2526-5","DOIUrl":"10.1007/s11705-025-2526-5","url":null,"abstract":"<div><p>To achieve fire-resistant epoxy resin (EP), a UiO-66-based novel flame retardant coating (CS@APP@UiO-66) was prepared by modifying UiO-66 with chitosan (CS) and ammonium polyphosphate (APP) through a layer-by-layer (LbL) self-assembly method, which was then introduced into an EP system to improve its fire safety. The results of scanning electron microscopy, X-ray diffraction and Fourier transform infrared spectroscopy show that the unsaturated Zr atoms in the UiO-66 framework provide many active sites conducive to modification, so that the UiO-66 particles, which originally had a regular octahedral structure, are more dispersed by LbL modification without causing doping or distortion issues. The thermogravimetric analysis results indicate that the char residue of EP/2% UiO-66 is increased by 2.52% compared with that of pure EP, indicating that the thermal properties of the EP composite are improved after modification. In addition, the cone test results indicate that EP/2%UiO-66-5L has good flame retardancy and smoke suppression properties, and the peak heat release rate, total smoke production and rate of CO generation values are 25.2%, 5.7% and 38.5% lower than those of the unmodified EP. Moreover, it can be concluded from the Raman test that the graphitization degree of the modified EP composite is strengthened. The above results indicated that after the incorporation of CS@APP@UiO-66 into the EP composites, more char layers formed as physical barriers to prevent the transfer of mass and heat, thus reducing the speed of flame propagation. Therefore, the flame resistance and smoke suppression of the EP composites improved. These favorable characteristics, including high flame retardant efficiency and good smoke suppression, make LbL-functionalized UiO-66 promising for flame retardant polymer applications.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143108474","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}

引用次数: 0

Formation of atomically dispersed zirconium through the utilization of nanoconfined environments 利用纳米密闭环境形成原子分散的锆

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI: 10.1007/s11705-025-2524-7

Xuan-Yi Liu, Yang Wang, Le-Ping Gao, Kai Zhang, Yang Liu, Xiang-Bin Shao, Song-Song Peng, Jiahui Kou, Lin-Bing Sun

{"title":"Formation of atomically dispersed zirconium through the utilization of nanoconfined environments","authors":"Xuan-Yi Liu, Yang Wang, Le-Ping Gao, Kai Zhang, Yang Liu, Xiang-Bin Shao, Song-Song Peng, Jiahui Kou, Lin-Bing Sun","doi":"10.1007/s11705-025-2524-7","DOIUrl":"10.1007/s11705-025-2524-7","url":null,"abstract":"<div><p>Single-atom catalysts are highly effective in catalyzing a wide range of reactions owing to their capacity to have precise coordination patterns and fully leverage the potential of metal atoms. Although several techniques have been reported for the preparation of single-atom catalysts, adopting a convenient method to construct them still has a challenge. In this work, we report a convenient method for the preparation of Zr-based single-atom catalyst that takes advantage of the nanoconfined environments between the template and silica wall in template-occupied silica SBA-15. After introducing Zr-containing precursor into the nanoconfined environments of the template-occupied silica SBA-15 using solid-phase milling, Zr-based single-atom catalysts were produced via the following calcination step. Density functional theory calculations and experimental findings show that Zr atoms form Zr–O–Si structure in the silica walls. The Zr single-atom catalyst synthesized using the nanoconfined environments exhibited notably superior catalytic performance in the synthesis of benzyl acetate from the esterification reaction between acetic acid and benzyl alcohol (63.3% yield), outperforming the counterpart that synthesized without such nanoconfined environments (19.8% yield).\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142976554","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}

引用次数: 0

Organic-inorganic hybrid hydrogel electrolyte for high-performance quasi-solid-state zinc-air batteries 高性能准固态锌-空气电池用有机-无机杂化水凝胶电解质

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI: 10.1007/s11705-025-2519-4

Mingzhu Wu, Niu Huang, Minghui Lv, Fengyi Wang, Fang Ma, Yihan Deng, Panpan Sun, Yong Zheng, Wei Liu, Liqun Ye

{"title":"Organic-inorganic hybrid hydrogel electrolyte for high-performance quasi-solid-state zinc-air batteries","authors":"Mingzhu Wu, Niu Huang, Minghui Lv, Fengyi Wang, Fang Ma, Yihan Deng, Panpan Sun, Yong Zheng, Wei Liu, Liqun Ye","doi":"10.1007/s11705-025-2519-4","DOIUrl":"10.1007/s11705-025-2519-4","url":null,"abstract":"<div><p>Flexible aqueous zinc-air batteries with high energy density and safety have garnered significant attention. Gel polymer electrolytes have emerged as the preferred option over conventional liquid electrolytes due to their ability to prevent electrolyte leakage. In this study, a composite PANa-PVP-TiO<sub>2</sub>(NH<sub>2</sub>) hydrogel with high alkaline resistance and ionic conductivity is designed, where the inorganic TiO<sub>2</sub>(NH<sub>2</sub>) nanoparticles are evenly distributed and integrated into the organic dual network of polyacrylate sodium and polyvinyl pyrrolidone. The organic-inorganic hybrid structure enhances the absorption and retention capabilities for electrolyte solution, leading to impressive ionic conductivity of the gel polymer electrolyte throughout the operation of flexible aqueous zinc-air batteries. Additionally, the incorporation of TiO<sub>2</sub>(NH<sub>2</sub>) nanoparticles and the dual network construction effectively strengthen the mechanical strength and flexibility of the gel polymer electrolyte, suppressing by-products and zinc dendrite formation. The enhancements lead to the extended cycling longevity of zinc symmetric batteries and excellent power density, as well as the prolonged cycle life of flexible aqueous zinc-air batteries.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142963050","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}

引用次数: 0

Reconstructing cobalt disulfide nanosheets through sulfur doping hexamethylenetetramine regulated β-Co(OH)2 for oxygen evolution reaction

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-10 DOI: 10.1007/s11705-025-2525-6

Xiangtai Zhang, Lei Wu

{"title":"Reconstructing cobalt disulfide nanosheets through sulfur doping hexamethylenetetramine regulated β-Co(OH)2 for oxygen evolution reaction","authors":"Xiangtai Zhang, Lei Wu","doi":"10.1007/s11705-025-2525-6","DOIUrl":"10.1007/s11705-025-2525-6","url":null,"abstract":"<div><p>Exploiting advanced transition metal based electrocatalysts is critical for the oxygen evolution reaction (OER) due to their high efficiency in an alkaline environment for water splitting. Herein, CoS<sub>2</sub> nanosheets were synthesized through simple hydrothermal process and sulfurized layered <i>β</i>-Co(OH)<sub>2</sub> nanosheets as a precursor. The regulation strategy of hexamethylenetetramine was employed to create layered single-crystal <i>β</i>-Co(OH)<sub>2</sub> nanosheets. X-ray absorption fine structure indicates the crystal phase reconstructions occur on <i>β</i>-Co(OH)<sub>2</sub> surface during the sulfidation reaction. The sulfurized <i>β</i>-Co(OH)<sub>2</sub> nanosheets present an overpotential of only 297 mV to reach 10 mA·cm<sup>−2</sup>, a low Tafel slope of 71.7 mV·dec<sup>−1</sup> and excellent stability for OER. The results clarified that the CoS<sub>2</sub> nanosheets excellent OER performance is attributable to cobalt sulfide sheet structure and structural changes by sulfur dopants. The results of the sulfurized layered <i>β</i>-Co(OH)<sub>2</sub> to produce CoS<sub>2</sub> nanosheets indicate that this strategy may represents a potential replacement for oxygen evolution application, particularly for the large-scale production of water splitting catalysts.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143423203","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}

引用次数: 0

Optimizing polylactic acid: synthesis, properties, and regulatory strategies for food packaging applications 优化聚乳酸：食品包装应用的合成、性质和调控策略

IF 4.3 3区工程技术

Frontiers of Chemical Science and Engineering Pub Date : 2025-01-05 DOI: 10.1007/s11705-025-2523-8

Peng Sun, Kelan Liu, Cunjun Dong, Li Yan, Hongyan Zhu, Mingliang Fang, Donglei Fu, Xinghai Liu

{"title":"Optimizing polylactic acid: synthesis, properties, and regulatory strategies for food packaging applications","authors":"Peng Sun, Kelan Liu, Cunjun Dong, Li Yan, Hongyan Zhu, Mingliang Fang, Donglei Fu, Xinghai Liu","doi":"10.1007/s11705-025-2523-8","DOIUrl":"10.1007/s11705-025-2523-8","url":null,"abstract":"<div><p>Polylactic acid, a biodegradable polymer derived from renewable resources, is increasingly used in food packaging due to its transparency, renewability, and food safety. However, its mechanical properties, heat resistance, and barrier performance present significant challenges that limit its application. Currently, there is a lack of comprehensive literature addressing methods to optimize polylactic acid’s performance for various food packaging application. Hence, this review provides an overview of polylactic acid production processes, including the synthesis of lactic acid and lactide, as well as methods such as polycondensation and ring-opening polymerization. We critically examine the advantages and limitations of polylactic acid in various food packaging contexts, focusing on strategies to enhance its mechanical properties, barrier performance against oxygen and water vapor, surface hydrophobicity, thermal stability, and resistance to ultraviolet light. Furthermore, we summarize recent advancements in polylactic acid applications for food packaging, highlighting innovations in antioxidant, antimicrobial, and freshness indicator packaging. These developments underscore the significant potential of polylactic acid in the food packaging sector and offer valuable insights for future research directions.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":571,"journal":{"name":"Frontiers of Chemical Science and Engineering","volume":"19 3","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142994349","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}

引用次数: 0