The capture of radioactive iodine is crucial for nuclear safety, but conventional silver-based adsorbents suffer from low silver utilization efficiency. Instead of traditional physical loading, we report an adaptive synthesis strategy for integrated chemical construction of silver-on-boehmite platform to achieve atom-economic iodine adsorption. The designed materials incorporate a boehmite-like support capable of anchoring single silver sites (-N–Ag–N-) along with tunable surfactant-like pendant alcoholic groups. This labile site allows partial-to-complete coordinative substitution, enabling the construction of a library of nearly 20 distinct adsorbents. Such flexible design ensures monodispersion of the unsaturated silver active centers while permitting precise modulation of their maximization exposure and accessibility. Compared to traditional adsorbents, Methanol-functionalized AlOC-188-OMe achieves comparable iodine adsorption capacity but faster capture kinetics without relying on high porosity. The sequential confinement and release of I2 within the channels were directly visualized through single-crystal X-ray diffraction. Furthermore, the material demonstrates scalable synthesis (up to ~10 g per batch) with avoidance of silver mirror reactions, excellent radiation resistance and promising dynamic adsorption performance—collectively underscoring its strong potential for practical applications. This work provides a novel paradigm for designing high-efficiency adsorbents by maximizing the utility of precious metal atoms.
放射性碘的捕获对核安全至关重要，但传统的银基吸附剂存在银利用效率低的问题。代替传统的物理负载，我们报道了一种自适应合成策略，用于集成化学结构的银-薄铝石平台，以实现原子经济的碘吸附。所设计的材料包含一个类似薄铝石的支撑，能够锚定单个银位点（- n - ag - n -）以及可调的表面活性剂状垂坠醇基团。这个不稳定的位点允许部分到完全的配位替代，从而能够构建一个包含近20种不同吸附剂的库。这种灵活的设计确保了不饱和银活性中心的单色散，同时允许对其最大曝光和可及性进行精确调制。与传统吸附剂相比，甲醇功能化的AlOC-188-OMe具有相当的碘吸附能力，但无需依赖高孔隙率，捕获动力学更快。通过单晶x射线衍射直接观察了I2在通道内的顺序约束和释放。此外，该材料展示了可扩展的合成（每批高达~10 g），避免了银镜像反应，优异的耐辐射性和有前途的动态吸附性能-共同强调了其实际应用的强大潜力。这项工作为通过最大限度地利用贵金属原子来设计高效吸附剂提供了一种新的范例。
{"title":"Designed synthesis of silver-on-Boehmite platform with surface substitution toward atom-economic iodine adsorption","authors":"San-Tai Wang, Guo-Long Wang, Zhiwei Xin, Junhua Xu, Chao Zhao, Lisheng Chi, Jian Zhang, Wei-Hui Fang","doi":"10.1016/j.cej.2026.173984","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173984","url":null,"abstract":"The capture of radioactive iodine is crucial for nuclear safety, but conventional silver-based adsorbents suffer from low silver utilization efficiency. Instead of traditional physical loading, we report an adaptive synthesis strategy for integrated chemical construction of silver-on-boehmite platform to achieve atom-economic iodine adsorption. The designed materials incorporate a boehmite-like support capable of anchoring single silver sites (-N–Ag–N-) along with tunable surfactant-like pendant alcoholic groups. This labile site allows partial-to-complete coordinative substitution, enabling the construction of a library of nearly 20 distinct adsorbents. Such flexible design ensures monodispersion of the unsaturated silver active centers while permitting precise modulation of their maximization exposure and accessibility. Compared to traditional adsorbents, Methanol-functionalized AlOC-188-OMe achieves comparable iodine adsorption capacity but faster capture kinetics without relying on high porosity. The sequential confinement and release of I<ce:inf loc=\"post\">2</ce:inf> within the channels were directly visualized through single-crystal X-ray diffraction. Furthermore, the material demonstrates scalable synthesis (up to ~10 g per batch) with avoidance of silver mirror reactions, excellent radiation resistance and promising dynamic adsorption performance—collectively underscoring its strong potential for practical applications. This work provides a novel paradigm for designing high-efficiency adsorbents by maximizing the utility of precious metal atoms.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"2 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153156","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.174014
Tianyu Li, Siying Li, Yuzhe He, Xingxing Peng
Brominated flame retardants (BFRs) resist degradation in conventional wastewater treatments, posing ecological and health risks. Herein, we innovatively developed an alginate-encapsulated Fe/Ni-Citrobacter synergistic system (AFC-Syn) for synergistic BFRs degradation in a continuous stirred-tank reactor (CSTR) treating real municipal wastewater. Remarkably, the system achieved sustained removal efficiencies of >90% for Tetrabromobisphenol A (TBBPA), Decabromodiphenyl ether (BDE-209), and Hexabromocyclododecane (HBCD), over 30 days, with complete degradation within 48 h, while simultaneously controlling COD and nutrient levels (>85% removal). In the system, in addition to direct electron transfer between Fe/Ni and membrane-binding proteins, the carboxyl groups in alginate are proposed to potentially serve as electron-hopping sites to enable long-range electron transport. Meanwhile, the alginate-encapsulated Fe/Ni continuously release Fe2+/Ni2+, which act as soluble electron carriers to accelerate electron transfer—either to BFRs for debromination or to microorganisms to stimulate their growth. Ultimately, the electrons are captured by dehalogenase, cleaving CBr bonds and driving the stepwise debromination. Metagenomic and metatranscriptomic analyses revealed persistent enrichment of keystone functional genera, collectively accounting for over 30% of the microbial community. These microorganisms activated interconnected gene networks, thereby establishing an integrated functional axis that synergistically links pollutant degradation, electron transfer, and nutrient cycling. This integration prevented toxic intermediate accumulation while achieving complete decontamination.
{"title":"One bead, triple feats: Alginate-encapsulated Fe/Ni-Citrobacter microsphere (AFC-Syn) unlocks concurrent contaminant elimination, nutrient recovery and self-regeneration in municipal wastewater treatment","authors":"Tianyu Li, Siying Li, Yuzhe He, Xingxing Peng","doi":"10.1016/j.cej.2026.174014","DOIUrl":"https://doi.org/10.1016/j.cej.2026.174014","url":null,"abstract":"Brominated flame retardants (BFRs) resist degradation in conventional wastewater treatments, posing ecological and health risks. Herein, we innovatively developed an alginate-encapsulated Fe/Ni-<ce:italic>Citrobacter</ce:italic> synergistic system (AFC-Syn) for synergistic BFRs degradation in a continuous stirred-tank reactor (CSTR) treating real municipal wastewater. Remarkably, the system achieved sustained removal efficiencies of >90% for Tetrabromobisphenol A (TBBPA), Decabromodiphenyl ether (BDE-209), and Hexabromocyclododecane (HBCD), over 30 days, with complete degradation within 48 h, while simultaneously controlling COD and nutrient levels (>85% removal). In the system, in addition to direct electron transfer between Fe/Ni and membrane-binding proteins, the carboxyl groups in alginate are proposed to potentially serve as electron-hopping sites to enable long-range electron transport. Meanwhile, the alginate-encapsulated Fe/Ni continuously release Fe<ce:sup loc=\"post\">2+</ce:sup>/Ni<ce:sup loc=\"post\">2+</ce:sup>, which act as soluble electron carriers to accelerate electron transfer—either to BFRs for debromination or to microorganisms to stimulate their growth. Ultimately, the electrons are captured by dehalogenase, cleaving C<ce:glyph name=\"sbnd\"></ce:glyph>Br bonds and driving the stepwise debromination. Metagenomic and metatranscriptomic analyses revealed persistent enrichment of keystone functional genera, collectively accounting for over 30% of the microbial community. These microorganisms activated interconnected gene networks, thereby establishing an integrated functional axis that synergistically links pollutant degradation, electron transfer, and nutrient cycling. This integration prevented toxic intermediate accumulation while achieving complete decontamination.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"1 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153191","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.173990
Wenhao Ren, Ju Wang, Yangxi Liu, Suqing Wang, Haihui Wang
In terms of poor thermal stability and inadequate electrolyte affinity, the inherent limitations of commercial polyolefin separators pose significant safety risks for next-generation high-energy-density lithium ion batteries (LIBs). Herein, we propose a bacterial cellulose (BC)-based separator through a coordination-mediated hydrogen-bond modulation strategy, creating a UIO-66-NH2@BC composite separator that synergistically integrates thermal and mechanical stability with enhanced ion transport. The design leverages Zr4+ coordination chemistry to selectively weaken interchain hydrogen-bond in BC while preserving nanofiber continuity. Subsequent in situ growth of UIO-66-NH2 at Zr4+ coordination sites introduces increased porosity (71.4% vs. 3.2% in pristine BC) with small mechanical degradation. The optimized separator demonstrates exceptional thermal stability (>250 °C) and mechanical robustness (approximately 120 MPa tensile strength). The well-designed architecture achieves enhanced electrolyte uptake (206.7%) with good electrolyte wettability, regulated ion transport with Li+ transference number of 0.62 via -NH2···PF6− interaction, and dendrite suppression with stable Li plating/stripping over 250 h at 1 mA cm−2. The LiFePO4/Li batteries assembled with UIO-66-NH2@BC separator deliver superior rate capability and cycling stability (92.83% retention after 400 cycles at 5C). This work presents an advanced BC-based separator for constructing LIBs with prominent electrochemical performance with high safety and reliability.
由于热稳定性差和电解质亲和力不足，商用聚烯烃分离器的固有局限性给下一代高能量密度锂离子电池（LIBs）带来了重大的安全风险。在此，我们提出了一种基于细菌纤维素（BC）的分离器，通过配位介导的氢键调制策略，创建了UIO-66-NH2@BC复合分离器，协同集成了热稳定性和机械稳定性以及增强的离子传输。该设计利用Zr4+配位化学选择性地削弱BC中的链间氢键，同时保持纳米纤维的连续性。随后，uuo -66- nh2在Zr4+配位位点的原位生长导致孔隙率增加（71.4%，而原始BC为3.2%），机械降解较小。优化后的分离器具有优异的热稳定性（>250 °C）和机械稳健性（约120 MPa抗拉强度）。精心设计的结构通过良好的电解质润湿性提高了电解质摄取（206.7%），通过-NH2···PF6 -相互作用调节了离子传输（Li+转移数为0.62），并在1 mA cm−2下在250 h内稳定地镀/剥离Li来抑制枝晶。与UIO-66-NH2@BC分离器组装的LiFePO4/Li电池具有卓越的倍率能力和循环稳定性（在5C下400次 循环后保持92.83%）。本文介绍了一种新型的基于bc的电化学性能优异、安全可靠的锂离子电池分离器。
{"title":"Coordination-mediated hydrogen-bond engineering enables robust and heat-resistant mof-decorated bacterial cellulose separators for high-safety lithium-ion batteries","authors":"Wenhao Ren, Ju Wang, Yangxi Liu, Suqing Wang, Haihui Wang","doi":"10.1016/j.cej.2026.173990","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173990","url":null,"abstract":"In terms of poor thermal stability and inadequate electrolyte affinity, the inherent limitations of commercial polyolefin separators pose significant safety risks for next-generation high-energy-density lithium ion batteries (LIBs). Herein, we propose a bacterial cellulose (BC)-based separator through a coordination-mediated hydrogen-bond modulation strategy, creating a UIO-66-NH<ce:inf loc=\"post\">2</ce:inf>@BC composite separator that synergistically integrates thermal and mechanical stability with enhanced ion transport. The design leverages Zr<ce:sup loc=\"post\">4+</ce:sup> coordination chemistry to selectively weaken interchain hydrogen-bond in BC while preserving nanofiber continuity. Subsequent in situ growth of UIO-66-NH<ce:inf loc=\"post\">2</ce:inf> at Zr<ce:sup loc=\"post\">4+</ce:sup> coordination sites introduces increased porosity (71.4% vs. 3.2% in pristine BC) with small mechanical degradation. The optimized separator demonstrates exceptional thermal stability (>250 °C) and mechanical robustness (approximately 120 MPa tensile strength). The well-designed architecture achieves enhanced electrolyte uptake (206.7%) with good electrolyte wettability, regulated ion transport with Li<ce:sup loc=\"post\">+</ce:sup> transference number of 0.62 via -NH<ce:inf loc=\"post\">2</ce:inf>···PF<ce:inf loc=\"post\">6</ce:inf><ce:sup loc=\"post\">−</ce:sup> interaction, and dendrite suppression with stable Li plating/stripping over 250 h at 1 mA cm<ce:sup loc=\"post\">−2</ce:sup>. The LiFePO<ce:inf loc=\"post\">4</ce:inf>/Li batteries assembled with UIO-66-NH<ce:inf loc=\"post\">2</ce:inf>@BC separator deliver superior rate capability and cycling stability (92.83% retention after 400 cycles at 5C). This work presents an advanced BC-based separator for constructing LIBs with prominent electrochemical performance with high safety and reliability.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"7 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146146859","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.174009
Kyungjun Kim, Hwijoo Lee, Hong Rim Shin, Seongsoo Park, Jaeyeon Bang, Daehun Han, Sungji Kim, Ilyoung Choi, Youngugk Kim, Janghyuk Moon, Jong-Won Lee, Sang-Min Lee
Graphite is commonly utilized as an anode material for lithium-ion batteries (LIBs) due to its stable cycling performance. To improve the energy density of LIBs, hybrid graphite anodes operating on Li intercalation and plating mechanisms have gained significant attention. However, repetitive plating/stripping reactions on the graphite surface lead to the continuous accumulation of irreversible “dead” Li species, thereby causing severe capacity fade and safety risk. Herein, we report an etched graphite (EG) hybrid anode with vertically oriented nanochannels on the basal plane to enhance the reversibility of Li plating and stripping. A metal oxide-catalyzed oxidation process at reduced temperatures (<500 °C) is developed to selectively etch the basal plane of graphite and to form vertical nanochannels. The resulting nanochannels play a crucial role in enhancing the electrode reversibility by providing abundant active sites for homogeneous Li intercalation and metal nucleation and by facilitating the formation of robust LiF-rich solid–electrolyte interphases. Furthermore, the EG hybrid anode effectively regulates the Li+ distribution within the porous electrode even under fast charging conditions (3C = 12 mA cm−2) and thus suppresses the formation of dead Li species. A full cell with the EG hybrid anode and LiNi0.8Co0.1Mn0.1O2 cathode exhibits higher capacity retention (62.3%) over 800 cycles at a state of charge (SOC) = 150% as compared with a bare graphite full cell. This study underscores the effectiveness of graphite surface engineering in enabling reversible Li plating/stripping reactions for advanced LIBs with hybrid anodes.
石墨因其稳定的循环性能而被广泛用作锂离子电池的负极材料。为了提高锂离子电池的能量密度，杂化石墨阳极的锂嵌入和镀机制得到了广泛的关注。然而，石墨表面的重复镀/剥离反应导致不可逆的“死”锂不断积累，从而造成严重的容量衰减和安全风险。本文报道了一种在基面上具有垂直定向纳米通道的蚀刻石墨（EG）杂化阳极，以增强锂电镀和剥离的可逆性。在还原温度（<500 °C）下，开发了金属氧化物催化氧化工艺，选择性地蚀刻石墨基面并形成垂直纳米通道。由此产生的纳米通道在提高电极可逆性方面发挥了至关重要的作用，为均匀的Li嵌入和金属成核提供了丰富的活性位点，并促进了富锂固体电解质界面的形成。此外，即使在快速充电条件下，EG杂化阳极也能有效调节多孔电极内Li+的分布（3C = 12 mA cm−2），从而抑制死态Li的形成。在充电状态（SOC） = 的情况下，使用EG杂化阳极和LiNi0.8Co0.1Mn0.1O2阴极的全电池在800次 循环内的容量保持率（62.3%）高于裸石墨全电池（150%）。这项研究强调了石墨表面工程在实现具有杂化阳极的先进锂离子电池可逆镀/剥离反应方面的有效性。
{"title":"Hybrid graphite anodes with vertical nanochannels for high-capacity and long-cycle lithium-ion batteries","authors":"Kyungjun Kim, Hwijoo Lee, Hong Rim Shin, Seongsoo Park, Jaeyeon Bang, Daehun Han, Sungji Kim, Ilyoung Choi, Youngugk Kim, Janghyuk Moon, Jong-Won Lee, Sang-Min Lee","doi":"10.1016/j.cej.2026.174009","DOIUrl":"https://doi.org/10.1016/j.cej.2026.174009","url":null,"abstract":"Graphite is commonly utilized as an anode material for lithium-ion batteries (LIBs) due to its stable cycling performance. To improve the energy density of LIBs, hybrid graphite anodes operating on Li intercalation and plating mechanisms have gained significant attention. However, repetitive plating/stripping reactions on the graphite surface lead to the continuous accumulation of irreversible “dead” Li species, thereby causing severe capacity fade and safety risk. Herein, we report an etched graphite (EG) hybrid anode with vertically oriented nanochannels on the basal plane to enhance the reversibility of Li plating and stripping. A metal oxide-catalyzed oxidation process at reduced temperatures (<500 °C) is developed to selectively etch the basal plane of graphite and to form vertical nanochannels. The resulting nanochannels play a crucial role in enhancing the electrode reversibility by providing abundant active sites for homogeneous Li intercalation and metal nucleation and by facilitating the formation of robust LiF-rich solid–electrolyte interphases. Furthermore, the EG hybrid anode effectively regulates the Li<ce:sup loc=\"post\">+</ce:sup> distribution within the porous electrode even under fast charging conditions (3C = 12 mA cm<ce:sup loc=\"post\">−2</ce:sup>) and thus suppresses the formation of dead Li species. A full cell with the EG hybrid anode and LiNi<ce:inf loc=\"post\">0.8</ce:inf>Co<ce:inf loc=\"post\">0.1</ce:inf>Mn<ce:inf loc=\"post\">0.1</ce:inf>O<ce:inf loc=\"post\">2</ce:inf> cathode exhibits higher capacity retention (62.3%) over 800 cycles at a state of charge (SOC) = 150% as compared with a bare graphite full cell. This study underscores the effectiveness of graphite surface engineering in enabling reversible Li plating/stripping reactions for advanced LIBs with hybrid anodes.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"47 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153160","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.173951
Mingjun Ouyang, Yutong Liu, Lianchao Wang, Hua Wu, Kuaibing Wang
{"title":"Letting the catalyst take a break: Pulse-potential-driven mass transfer enhancement dominates efficient electrooxidation of ethylene glycol","authors":"Mingjun Ouyang, Yutong Liu, Lianchao Wang, Hua Wu, Kuaibing Wang","doi":"10.1016/j.cej.2026.173951","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173951","url":null,"abstract":"","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"69 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153185","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.174026
Kaiwen Zheng, Zihao Lin, Yanchun Gao, Xu Zheng, Bin Hu, Changqing Zhang, Dehao Fu, Di Wu
Regenerating large bone defects requires coordinated activation of osteogenesis and angiogenesis—processes that remain challenging to synchronize using current therapeutic strategies. Here, we report a strategy that harnesses static magnetic field (SMF) stimulation to reprogram bone marrow-derived mesenchymal stem cells (BMSCs) to secrete exosomes enriched in FOXO1, a transcription factor that regulates both skeletal and vascular lineage commitment. These magnetically engineered exosomes (SMF-Exo) are integrated into polydopamine-coated 3D-printed titanium scaffolds, creating a bioactive interface that promotes vascularized bone repair. Mechanistically, SMF-Exo transfer FOXO1 to recipient cells, where it drives osteogenic and angiogenic gene expression via activation of Runx2 and Ang1. This dual-targeting approach circumvents the limitations of traditional growth factor therapies and addresses the bioinert nature of titanium implants. In a rat mandibular defect model, the SMF-Exo-loaded scaffolds enhanced both neovascularization and bone regeneration. These findings establish a non-invasive method to functionally engineer exosomes for spatially controlled, transcription factor—based regeneration, and introduce FOXO1-enriched vesicles as a modular tool to bridge osteo-vascular signaling. This work highlights the convergence of magnetic biostimulation, exosomal programming, and scaffold design as a framework for next-generation acellular bone therapies.
{"title":"Static magnetic field programming of exosomes enhances FOXO1-driven osteo-vascular regeneration in 3D-printed titanium scaffolds","authors":"Kaiwen Zheng, Zihao Lin, Yanchun Gao, Xu Zheng, Bin Hu, Changqing Zhang, Dehao Fu, Di Wu","doi":"10.1016/j.cej.2026.174026","DOIUrl":"https://doi.org/10.1016/j.cej.2026.174026","url":null,"abstract":"Regenerating large bone defects requires coordinated activation of osteogenesis and angiogenesis—processes that remain challenging to synchronize using current therapeutic strategies. Here, we report a strategy that harnesses static magnetic field (SMF) stimulation to reprogram bone marrow-derived mesenchymal stem cells (BMSCs) to secrete exosomes enriched in FOXO1, a transcription factor that regulates both skeletal and vascular lineage commitment. These magnetically engineered exosomes (SMF-Exo) are integrated into polydopamine-coated 3D-printed titanium scaffolds, creating a bioactive interface that promotes vascularized bone repair. Mechanistically, SMF-Exo transfer FOXO1 to recipient cells, where it drives osteogenic and angiogenic gene expression via activation of <ce:italic>Runx2</ce:italic> and <ce:italic>Ang1</ce:italic>. This dual-targeting approach circumvents the limitations of traditional growth factor therapies and addresses the bioinert nature of titanium implants. In a rat mandibular defect model, the SMF-Exo-loaded scaffolds enhanced both neovascularization and bone regeneration. These findings establish a non-invasive method to functionally engineer exosomes for spatially controlled, transcription factor—based regeneration, and introduce FOXO1-enriched vesicles as a modular tool to bridge osteo-vascular signaling. This work highlights the convergence of magnetic biostimulation, exosomal programming, and scaffold design as a framework for next-generation acellular bone therapies.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"9 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153202","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.174024
Nicolas Stankovic, Jérôme Marin, Julien Jourdan, Thibault Quatravaux, Alexandre Chagnes
This study addresses the hydrometallurgical recycling of NdFeB magnets obtained from discarded hard disk drives. Magnet powders processed via hydrogen decrepitation were thermally oxidized at 850 °C to convert iron into insoluble oxides, minimizing iron dissolution during subsequent acid leaching. The research examined various parameters and different inorganic and organic acids – acetic, citric, trichloroacetic, methanesulfonic, and hydrochloric acids – to identify suitable operating conditions for rare-earth elements (.
{"title":"Selective hydrometallurgical processing of NdFeB magnets: impact of roasting on leaching selectivity and impurity dissolution","authors":"Nicolas Stankovic, Jérôme Marin, Julien Jourdan, Thibault Quatravaux, Alexandre Chagnes","doi":"10.1016/j.cej.2026.174024","DOIUrl":"https://doi.org/10.1016/j.cej.2026.174024","url":null,"abstract":"This study addresses the hydrometallurgical recycling of NdFeB magnets obtained from discarded hard disk drives. Magnet powders processed via hydrogen decrepitation were thermally oxidized at 850 °C to convert iron into insoluble oxides, minimizing iron dissolution during subsequent acid leaching. The research examined various parameters and different inorganic and organic acids – acetic, citric, trichloroacetic, methanesulfonic, and hydrochloric acids – to identify suitable operating conditions for rare-earth elements (.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"89 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153163","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}
Material-extrusion-based 3D printing technology has shown advantages in promoting the on-demand fabrication of silicone-based flexible thermal interface materials (TIMs). However, the incompatibility between high-loading fillers and silicone matrix seriously deteriorates the ink printability and the comprehensive mechanical strength, leaving a great challenge in designing multi-functional silicone elastomers. In this work, a strategy of constructing dual-filler networks for 3D printable thermally conductive silicone elastomers was proposed. For silicone inks, the fumed silica nanoparticles with the branched structure realized the ink thixotropy. Meanwhile, fumed silica with small-scaled island structure guaranteed the self-supporting ability of printed filaments without sacrificing the ink extrudability. Multi-scaled AlN micro-spheres with silane modification were close-packed to construct continuous thermally conductive pathways. Dual-filler networks realized the ink printability and synergistically enhanced thermally conductive and mechanical properties. The 3D-printed products could also be shaped into various architectures to fit the heating objects. Meanwhile, it succeeded in realizing a superior thermal conductivity of up to 5.50 W m−1 K−1 even at −80 °C, a resilience of above 90% at 40% strain, and stable heat dissipation capacity over a wide temperature range of −80 to 200 °C. Therefore, our work could inspire the utilization of 3D printing in fabricating elastomers with functional architectures.
基于材料挤压的3D打印技术在促进硅基柔性热界面材料（TIMs）的按需制造方面显示出优势。然而，高负荷填料与有机硅基体的不相容性严重影响了油墨的可印刷性和综合机械强度，给多功能有机硅弹性体的设计带来了很大的挑战。在这项工作中，提出了一种构建双填充网络的策略，用于3D打印导热硅弹性体。对于有机硅油墨，气相二氧化硅纳米颗粒具有支链结构，实现了油墨的触变性。同时，具有小尺寸岛状结构的气相二氧化硅保证了印刷长丝的自支撑能力，同时又不牺牲油墨的可挤出性。硅烷修饰的多尺度AlN微球被紧密排列以构建连续的导热通道。双填料网络实现了油墨的可印刷性，并协同提高了导热性能和机械性能。3d打印产品还可以塑造成各种结构，以适应加热物体。同时，它成功地实现了优异的导热系数高达5.50 W m−1 K−1，即使在−80 °C下，40%应变下的回弹性也超过90%，并且在−80至200 °C的宽温度范围内具有稳定的散热能力。因此，我们的工作可以激发3D打印在制造具有功能结构的弹性体中的应用。
{"title":"Establishing the custom 3D printing of thermally conductive elastomer composites with flexibility and resilience by coupling dual-filler networks","authors":"Junrui Tan, Guizhi Zhu, Mingwei Yang, Qiong Wu, Yong Li, Longfei Tan, Xianwei Meng","doi":"10.1016/j.cej.2026.174040","DOIUrl":"https://doi.org/10.1016/j.cej.2026.174040","url":null,"abstract":"Material-extrusion-based 3D printing technology has shown advantages in promoting the on-demand fabrication of silicone-based flexible thermal interface materials (TIMs). However, the incompatibility between high-loading fillers and silicone matrix seriously deteriorates the ink printability and the comprehensive mechanical strength, leaving a great challenge in designing multi-functional silicone elastomers. In this work, a strategy of constructing dual-filler networks for 3D printable thermally conductive silicone elastomers was proposed. For silicone inks, the fumed silica nanoparticles with the branched structure realized the ink thixotropy. Meanwhile, fumed silica with small-scaled island structure guaranteed the self-supporting ability of printed filaments without sacrificing the ink extrudability. Multi-scaled AlN micro-spheres with silane modification were close-packed to construct continuous thermally conductive pathways. Dual-filler networks realized the ink printability and synergistically enhanced thermally conductive and mechanical properties. The 3D-printed products could also be shaped into various architectures to fit the heating objects. Meanwhile, it succeeded in realizing a superior thermal conductivity of up to 5.50 W m<ce:sup loc=\"post\">−1</ce:sup> K<ce:sup loc=\"post\">−1</ce:sup> even at −80 °C, a resilience of above 90% at 40% strain, and stable heat dissipation capacity over a wide temperature range of −80 to 200 °C. Therefore, our work could inspire the utilization of 3D printing in fabricating elastomers with functional architectures.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"9 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153178","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}
Pub Date : 2026-02-10DOI: 10.1016/j.cej.2026.173995
Abdul Kareem Kalathil Soopy, Shengzhong (Frank) Liu, Adel Najar
Metal-halide-based perovskite single crystals (SCs) now rival epitaxial III–V materials for high-performance photodetection, yet can be grown from solution in minutes on almost any substrate. Recent “crystal-by-design” protocols—inverse-temperature, anti-solvent, and laser-assisted cooling routes—routinely deliver millimeter-scale boules and laterally patterned micro/nanowires with defect densities below 1010 cm−3. Dimensional tuning, from bulk crystals to microstructures, thin films, and nanowires, has further enhanced device performance by facilitating tailored charge transport pathways. When integrated into photoconductor-type architectures, these SCs have demonstrated remarkable improvements in response speed, detectivity, and responsivity. Moreover, strategies such as surface passivation and thickness optimization have contributed to enhanced stability and more efficient carrier dynamics. Concurrently, the incorporation of functional materials—including graphene, WS₂, quantum dots, and carbon nanotubes—into interface engineering and heterojunction design has significantly improved charge separation efficiency and suppressed carrier recombination. These advances have already yielded flexible, pixelated imagers for X-ray and hyperspectral cameras, biocompatible sensors capable of single-photon-level fluorescence lifetime imaging, device architectures, and broadband photodetection capabilities. Continued convergence of scalable growth, surface science, and heterogeneous integration is poised to transition perovskite single-crystal photodetectors from laboratory curiosities to commercial platforms within the next few years.
{"title":"Perovskite single-crystal photodetectors: Recent breakthroughs for superior device performance","authors":"Abdul Kareem Kalathil Soopy, Shengzhong (Frank) Liu, Adel Najar","doi":"10.1016/j.cej.2026.173995","DOIUrl":"https://doi.org/10.1016/j.cej.2026.173995","url":null,"abstract":"Metal-halide-based perovskite single crystals (SCs) now rival epitaxial III–V materials for high-performance photodetection, yet can be grown from solution in minutes on almost any substrate. Recent “crystal-by-design” protocols—inverse-temperature, anti-solvent, and laser-assisted cooling routes—routinely deliver millimeter-scale boules and laterally patterned micro/nanowires with defect densities below 10<ce:sup loc=\"post\">10</ce:sup> cm<ce:sup loc=\"post\">−3</ce:sup>. Dimensional tuning, from bulk crystals to microstructures, thin films, and nanowires, has further enhanced device performance by facilitating tailored charge transport pathways. When integrated into photoconductor-type architectures, these SCs have demonstrated remarkable improvements in response speed, detectivity, and responsivity. Moreover, strategies such as surface passivation and thickness optimization have contributed to enhanced stability and more efficient carrier dynamics. Concurrently, the incorporation of functional materials—including graphene, WS₂, quantum dots, and carbon nanotubes—into interface engineering and heterojunction design has significantly improved charge separation efficiency and suppressed carrier recombination. These advances have already yielded flexible, pixelated imagers for X-ray and hyperspectral cameras, biocompatible sensors capable of single-photon-level fluorescence lifetime imaging, device architectures, and broadband photodetection capabilities. Continued convergence of scalable growth, surface science, and heterogeneous integration is poised to transition perovskite single-crystal photodetectors from laboratory curiosities to commercial platforms within the next few years.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"246 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2026-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146153183","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}
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