Chemical Engineering Journal最新文献

{"title":"Optimizing Nickel-Based catalysts for UOR: The role of W interface in nickel-selective oxidation reaction (NSOR) enhancement","authors":"Yu Duan, Fozia Sultana, Xiaofan Zhang, Xiaoqing Yan, Xiangbowen Du, Meijie Shi, Peng Zhang, Xiaojun Qin, Kaicheng Qian, Tongtong Li, Mingwu Tan, Renhong Li","doi":"10.1016/j.cej.2025.162215","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162215","url":null,"abstract":"The urea oxidation reaction (UOR) presents a promising alternative to the oxygen evolution reaction (OER) for hydrogen production, offering a lower theoretical potential and capacity for wastewater treatment. However, the sluggish kinetics of UOR demand advanced catalyst development. Here, we report a tungsten-doped nickel catalyst (Ni₁₀₀-W₁-NF) synthesized via electrochemical deposition on nickel foam, which demonstrates exceptional catalytic performance. The Ni₁₀₀-W₁-NF catalyst achieves a current density of 100 mA cm^–2 at 1.35 V vs. RHE during UOR, significantly surpassing undoped Ni-based catalysts. When integrated into a two-electrode system coupling UOR with the hydrogen evolution reaction (HER), the system operates at 1.56 V to reach 100 mA cm⁻², a notable voltage reduction compared to OER-coupled systems. Phase characterization and density functional theory (DFT) calculations reveal that the optimized W doping induces electron transfer from Ni to W, reducing the adsorption-free energies of OH^– to − 4.23 eV and Ni (III)-urea to − 2.88 eV. This electronic modulation enhances UOR kinetics by accelerating the nickel-selective oxidation reaction (NSOR) and stabilizing high-valence nickel species. Compared to existing strategies, this work demonstrated the unique effectiveness of W doping in precisely tailoring electronic structures and reaction pathways, offering a sustainable and energy-efficient route for hydrogen production through urea electrolysis.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"38 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The design of novel lithium salt additives: 4-benzonitrile-1,3-double (trimethylboric acid) lithium (LBTA) to endow inherent superior stability in high voltage lithium ion batteries","authors":"Lucheng Li, Meiling Liu, Peng Yang, Wenfeng Yuan, Jun Chen","doi":"10.1016/j.cej.2025.162078","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162078","url":null,"abstract":"Noted that electrolyte additives containing either B-O groups or nitrile groups are being capable of lifting battery capacity, but there is little literature on the ability to combine the advantages of both B-O groups and nitrile groups to jointly contribute to the capacity enhancement for NCM811-based lithium-ion batteries. Therefore, in the current work, a novel Lithium salt 4-benzonitrile-1,3-double (trimethylboric acid) lithium (LBTA) additive including two types groups (B-O and nitrile groups) is designed as a interface film promoter existed between the electrolyte and electrodes mainly to boost electrochemical performance in lithium-ion batteries under the high-voltage conditions. The results show that the capacity of the battery improve from 94.4 mAh g⁻¹ to 162.2 mAh g⁻¹ after 200 cycles at 4.5 V by adding 0.03 LBTA to the conference (1 mol/L LiPF₆ with the solvent: DMC: EMC: EC = 1:1:1, vot. %). Further investigation of the mechanism for the capacity enhancement of the battery evidenced via characterization and computational methods showed that LBTA can preferentially sacrifice on the the electrodes’ surface over other carbonate solvents to form a more stable and dense passivation layer, which derived from decomposition of LBTA can better stable electrodes’ microstructure and alleviate the decomposition of state-of-the-art batteries electrolytes, subsequently enhancing the stability of the rechargeable battery in the high-voltage conditions.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"12 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Delocalization state-induced C-O bond weakness for enhancing CO2 electroreduction to CO","authors":"Rong Wang, Yue Peng, Deli Chen, Chuan Gao, Houlin Wang, Zhen Chen, Junhua Li","doi":"10.1016/j.cej.2025.162218","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162218","url":null,"abstract":"Manufacturing E-fuels through carbon capture utilization and storage (CCUS), powered by renewable energy conversion, presents a promising pathway towards near-zero emissions for achieving carbon neutrality. However, challenges arise from lower CO selectivity and slower generation rates, leading to suboptimal E-fuels yield and hindering the effective utilization of renewable energy. Drawing inspiration from the hard-soft-based theory, we propose that enhancing the electron delocalization state of catalytic sites can accelerate the CO₂ electroreduction to CO. In line with this hypothesis, we have developed a bimetallic catalyst (Ag-Zn) where Ag nanoclusters loaded on ZnO exhibit highly delocalized electrons. Theoretical calculations indicate that Ag-ZnO significantly expedites the hydroxyl detachment of the adsorbed *COOH intermediate, enhancing the efficiency of CO formation. The Ag-ZnO catalyst demonstrates one of the highest CO₂-electroreduction-to-CO selectivity (97%) in aqueous electrolyte. Furthermore, our investigation delves into the significance of soft acid sites through in situ X-ray adsorption spectroscopy, in situ Raman spectroscopy and asymmetric low-frequency pulsed strategy. The findings from this study offer theoretical insights guiding the design of catalysts for the efficient electrochemical reduction of CO₂ to produce CO.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"58 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Low-frequency ultrasound-driven piezoelectric films repair neuro-immune circuits in diabetic wound healing","authors":"Chenyan Yu, Ying Hu, Xin Zhang, Kaixu Yu, Lang Chen, Wenqian Zhang, Shengming Zhang, Zhenhe Zhang, Ruiyin Zeng, Yuheng Liao, Yanzhi Zhao, Lin Gan, Faqi Cao, Hui Li, Bobin Mi, Guohui Liu","doi":"10.1016/j.cej.2025.162045","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162045","url":null,"abstract":"Neuronal regeneration and immune modulation are critical for functional healing in diabetic wounds, yet existing wound treatments fail to address the complex interplay between these processes. This study introduces an effective cellular, cytokine-free therapeutic approach utilizing MXene/PVDF film for diabetic wound healing, driven by low-frequency ultrasound. These films provide localized electrical stimulation to enhance axonal regeneration and modulate immune responses within the wound microenvironment. Mechanistically, low-frequency ultrasound-activated MXene/PVDF films significantly promote axonal growth of dorsal root ganglion (DRG) explants, which, through the increased secretion of calcitonin gene-related peptide (CGRP) by peptidergic neurons, induce M2 macrophage polarization, thereby establishing neuro-immune circuits under hyperglycemic conditions. Macrophage depletion further confirms the crucial role of macrophages in facilitating neuronal regeneration. In vivo, the ultrasound-driven MXene/PVDF film accelerates wound healing, supports epidermal nerve regeneration and M2 macrophage polarization, and restores sensory function in diabetic wounds. These findings highlight the potential of MXene/PVDF films, coupled with ultrasound stimulation, as a promising therapeutic strategy for enhancing neuronal repair and immune modulation in diabetic wound healing.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"183 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ni-doped Co/SPP zeolite catalyst with optimized metal oxide-support interaction for propane dehydrogenation to propylene","authors":"Zijun Huang, Xiaohua Cao, Hao Wang, Dingkai Chen, Xianming Chen, Dedong He, Shuquan Huang, Yongming Luo","doi":"10.1016/j.cej.2025.162074","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162074","url":null,"abstract":"Propane dehydrogenation (PDH) is a potential secure technique for manufacturing propylene. Transition-metal-based catalysts for propane dehydrogenation reaction, particularly Co²⁺, have been developed rapidly over the past few years. However, determining the interaction between Co²⁺ species and zeolites has proven to be a formidable challenge in achieving the controllable construction of Co species as active sites for dehydrogenation.<!-- --> <!-- -->In this study, we synthesized a nickel–cobalt catalyst supported on self-pillared pentasil zeolite (CoNi@SPP) with a moderate metal oxide-support interaction for the PDH reaction. Specifically, the interaction is achieved by the electron transfer between nickel and cobalt, which subsequently reduces the strength of the Co²⁺ interaction with the silicon support. Further insights provided by<!-- --> <!-- -->pyridine IR spectra and NH₃-TPD emphasize that such moderate interaction results in an increased number of Lewis acid sites, ultimately intensifying the PDH produce propylene and H₂. The detailed study of catalyst’s properties provides new inspirations into utilizing additive to optimize metal oxide-support interactions, thus facilitating the development of highly active cobalt-based catalysts for propane dehydrogenation.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"97 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrochemical detection of As(Ⅲ): Innovations with FeSx@MOF-808/Ti3C2Tx composite materials","authors":"Ruipeng Chen, Xuexia Jia, Xingpeng Huang, Zefeng Mao, Hong Zhang, Huanying Zhou, Shuyue Ren, Zhixian Gao","doi":"10.1016/j.cej.2025.162082","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162082","url":null,"abstract":"Arsenic contamination in water poses significant health risks, necessitating effective detection methods to ensure public safety. In this study, a novel FeS_x@MOF-808/Ti₃C₂T_x composite sensor was introduced for the electrochemical detection of arsenite (As(III)), a highly toxic form of arsenic. Based on a straightforward synthetic approach, the composite enhances the sensitivity and selectivity for As(III) detection. The electrochemical performance in various buffer solutions was characterized through square wave anodic stripping voltammetry. The sensor demonstrated exceptional sensitivity with a detection limit of 0.02 ng/mL and a broad linear response range of 0.05–100 ng/mL, surpassing World Health Organization guidelines. Notably, the FeS_x@MOF-808/Ti₃C₂T_x composite exhibited minimal interference from common heavy metals. The superior adsorption properties, attributed to the high surface area and porosity of the composite, facilitated rapid arsenic ion capture. The developed FeS_x@MOF-808/Ti₃C₂T_x sensor offers a robust platform for reliable As(III) detection in diverse water matrices. This innovation contributes to environmental monitoring, providing a cost-effective and efficient method for arsenic detection, particularly in resource-limited regions. The findings underscore the potential of integrating advanced materials into electrochemical sensors, thereby paving the way for future developments in sustainable water quality management.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"5 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement of the radical pathway-dominated degradation of imidacloprid in PMS-AOP by 1 T-MoS2-based dual-atom catalyst: Synergistic catalysis by Fe and Ni atoms","authors":"Xinzhi Wang, Shibo Zhu, Anteng Dai, Ziyi Lin, Yue Xie, Qiao Zhou, Yiquan Qiu, Chao Zhang, Xiaohui Yi, Mingzhi Huang","doi":"10.1016/j.cej.2025.162063","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162063","url":null,"abstract":"Atomically dispersed heterogeneous catalysts (ADCs), represented by single-atom catalysts (SACs), have received much attention in the research of peroxymonosulfate-based advanced oxidation processes (PMS-AOPs), which has effectively solved the environmental problems caused by various emerging contaminants. However, single-atom catalysts suffer from the limitation of not being able to cope with multistep reactions using a solitary active site. This study synthesized the dual-atom catalyst FeNi_DA@1T-MoS₂ by introducing Fe and Ni atoms into 1 T-MoS₂ with metallic properties, which exerted the synergistic interaction of Fe and Ni atoms while maintaining the atom-dispersed properties to enhance the spontaneity of PMS adsorption and further reduce the adsorption energy barriers of PMS at the active sites. The degradation kinetic constants of the target contaminant imidacloprid were significantly increased up to 3.6-fold by the efficient activation of PMS. Additionally, this study defines the metal contribution factor and verifies the existence of synergistic interaction between Fe and Ni atoms by comparing experimental data with theoretical values. The dominant reactive oxygen species in the degradation process were identified by quenching experiments, EPR, and probe experiments as SO- 4<strong>·</strong> and <strong>·</strong>OH, corresponding to a contribution of 76.72 % and 14.48 %, respectively. This work reveals the synergistic catalytic interaction of dual atoms by combining experiments with theoretical calculations and systematically elucidates the degradation mechanism of the target pollutants. This work reveals the synergistic catalytic interaction of dual-atom catalysts by combining experiments with theoretical calculations, and systematically elucidates the degradation mechanism of target pollutants. Meanwhile, it also provides a technical reference for the development of novel dual-atom catalysts and efficient emerging contaminant treatment technologies.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"20 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143758330","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Iron and copper pillared clay photo-catalyzes carbon dioxide chemical reduction in aqueous medium","authors":"L. Gerardo Cornejo-Cornejo, Rubi Romero, Aída Gutiérrez-Alejandre, Alejandro Regalado-Méndez, Deysi Amado, Jose A. Hernández-Servin, Reyna Natividad","doi":"10.1016/j.cej.2025.162193","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162193","url":null,"abstract":"This work aimed to assess the catalytic activity of iron and copper pillared bentonite in the photoreduction of carbon dioxide towards organic compounds that are considered fuels, hydrogen carriers and brick molecules: methanol (M), formic acid (FA) and acetic acid (AA). The assessed variables were copper content, temperature, NaOH concentration and activation wavelength (254 nm and &gt; 400 nm). Fe and Cu content was quantified by atomic absorption: 13.62 % Fe (Fe-PILC), 2.51 % Cu (Cu/Fe-PILC-I), 3.86 % Cu (Cu/Fe-PILC-II). The addition of Fe and Cu increased specific surface area of bentonite, from 36 to 245, 137 and 98 m&lt;sup&gt;2&lt;/sup&gt; g&lt;sup&gt;−1&lt;/sup&gt; for Fe-PILC, Cu/Fe-PILC-I and Cu/Fe-PILC-II, respectively. FeO, Fe&lt;sub&gt;3&lt;/sub&gt;O&lt;sub&gt;4&lt;/sub&gt;, Fe&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;, CuO and Cu&lt;sub&gt;2&lt;/sub&gt;O were identified by X-ray photoelectron spectroscopy, XRD and TEM. By UV–Vis diffuse reflectance spectroscopy the band-gap energy of the synthesized materials was found to be ca. 2 eV. Pillaring increased total surface acidity, with Lewis acid sites rising by up to 63 % for Fe-PILC, and 395 % for Cu/Fe-PILC-II materials, respectively, in comparison to Bentonite. The optimization of the CO&lt;sub&gt;2&lt;/sub&gt; photo-reduction process was conducted by a Face Centered Central Composite Design (FCCD) and the optimal conditions maximizing FA (289.6 &lt;span&gt;&lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;m&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;o&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;l&lt;/mi&gt;&lt;mspace is=\"true\" width=\"0.166667em\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;C&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;A&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;μ&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;m&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;o&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;l&lt;/mi&gt;&lt;mspace width=\"0.166667em\" is=\"true\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;C&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;A&lt;/mi&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;) and AA (28.7 &lt;span&gt;&lt;span&gt;&lt;math&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;m&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;o&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;l&lt;/mi&gt;&lt;mspace is=\"true\" width=\"0.166667em\"&gt;&lt;/mspace&gt;&lt;msubsup is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;g&lt;/mi&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;C&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;A&lt;/mi&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;T&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&lt;mo is=\"true\"&gt;-&lt;/mo&gt;&lt;mn is=\"true\"&gt;1&lt;/mn&gt;&lt;/mrow&gt;&lt;/msubsup&gt;&lt;/mrow&gt;&lt;/","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"30 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Boosting discharge performance of primary Mg-air batteries via adopting sodium citrate as electrolyte to suppress self-corrosion of Mg anode during discharge","authors":"Pingli Jiang, Ke Li, Ruiqing Hou, Di Mei, Junjie Yang, Shijie Zhu, Shaokang Guan","doi":"10.1016/j.cej.2025.162200","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162200","url":null,"abstract":"Primary magnesium (Mg)-air battery recently has attracted increasing interest as electrochemical energy storage system. However, the discharge performance of Mg anodes is critically limited by the severe self-corrosion of the anode and the accumulation of insoluble discharge products on the anode surface during discharge, inducing energy loss and surface blockage. In this work, sodium citrate (NaCA) solution as potential electrolyte, due to its high affinity to Mg²⁺, was explored for high-performance Mg-air batteries in comparison to the commonly used sodium chloride (NaCl) electrolyte. The utilization efficiency and specific capacity of Mg0.5Zn0.2Ge anode reached the highest compared to the previous reports, achieving 91.4 % and 2007 mAh g⁻¹ at 5 mA cm⁻² respectively, enhanced by 54 % compared to the counterparts in NaCl electrolyte. It is mainly attributed to the alleviated self-corrosion and the uniform dissolution of Mg0.5Zn0.2Ge anode during discharge in NaCA electrolyte. Mg-air battery tests with high-purity Mg and AZ31 alloy as comparisons as well further confirm the universal effectiveness of NaCA electrolyte and demonstrate that NaCA can sufficiently suppress the accumulation of discharge products by chelating with Mg²⁺ and induce pretty uniform dissolution of the anode materials during discharge, conferring boosted specific energy on the Mg-based anodes at low current density. The current work provides a strategic feasibility by adopting chloride-free electrolyte to develop advanced Mg-air batteries based on the intrinsic properties of Mg.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"14 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unveiling the mechanism of hunger stress enhancing methane production from low-strength wastewater: Insight from organic conversion and microbial metabolism perspective","authors":"Xiangru Song, Qiangqiang Jiao, Yicheng Lian, Biyue Xie, Jia Liu","doi":"10.1016/j.cej.2025.162170","DOIUrl":"https://doi.org/10.1016/j.cej.2025.162170","url":null,"abstract":"Domestic wastewater, rich in biodegradable substances, presents a potential resource for methane production through anaerobic digestion. However, low organic concentrations in low-strength wastewater hinder microbial activity and degrade treatment efficiency. This study explored the regulatory effects of short-term hunger stress on microbial communities in an anaerobic fluidized bed membrane bioreactor (AFMBR) treating low-strength wastewater, aiming to enhance methane production and overall treatment performance. The results demonstrated that hunger stress had a significant impact on the adaptability of microbial communities, resulting in a 9.1% increase in COD removal efficiency and a 31.5 % increase in methane production. Notably, the relative abundance of key genera such as Methanosaetaceae and Bacteroidetes increased after hunger treatment, indicating a shift towards more efficient methanogenic pathways. Additionally, functional gene analysis revealed increased transcriptional activity, suggesting that hunger stress promoted metabolic processes essential for methane generation. This study highlights the innovative approach of using hunger stress to regulate microbial community dynamics in anaerobic systems, offering valuable insights into optimizing methane production from low-strength wastewater. The findings contribute to advancing anaerobic digestion technologies and improving the sustainability of wastewater treatment processes.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"19 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143745477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}