Journal of Cleaner Production
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2019
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IF 6.395
Duchao Zhang,Hongbin Ling,Tianzu Yang,Weifeng Liu,Lin Chen
Electric arc furnace (EAF) dust is a hazardous waste material containing valuable elements, such as zinc (Zn) and iron (Fe), as well as other environmentally harmful elements. In the conventional process, the existence of zinc ferrite (ZnFe 2 O 4 ) in EAF dust results in a low recovery ratio of zinc and can induce high energy consumption or difficulties utilizing iron resources. In this article, a hydrothermal reduction method in a NaOH system is proposed to recover Zn selectively from EAF dust. First, when pure ZnFe 2 O 4 was used as the input material to test the feasibility of the new method, 70% Zn leaching efficiencies and the isolation of Fe in the residue through the formation of ferroferric oxide (Fe 3 O 4 ) were achieved at the optimal conditions of 260 °C, 6 M [NaOH], 10 g/L [C 6 H 12 O 6 ] n and 50 mL/g of L/S. Second, a leaching process of EAF dust was proposed using the following two procedures: (i) first leaching under normal pressure to dissolve zinc oxide (ZnO); and (ii) second leaching of the first leach residue under hydrothermal reduction conditions to dissolve ZnFe 2 O 4 . The leach liquor from the second step was recycled to the first step. Under optimum conditions, the leaching efficiencies of Zn during the first and second leaching were 66.4% and 69.3%, respectively. The total Zn leaching efficiency was calculated to be 89.7%, producing Zn-impregnated leach solution and a leach residue rich in Fe (up to 39.4 wt%) that are suitable as resources for a steel-making plant. However, this process also has its shortcomings owning to larger liquid-solid ratio in the leaching process. Overall, the study technically provides an alternative approach to improve the recycling of zinc and iron and effectively reduce environmental risks from EAF dust.
研究领域:
环境工程
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冶金工程
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资源循环利用
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清洁生产技术
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工业废物处理
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Alexandria Engineering Journal
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2024
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IF 6.2
Hong Zhang,Ming Chen,Tiantian Liang,Zanpeng Zhang,Changhui Yang
The use of nanocarbon materials to enhance the toughness of fragile cementitious materials has attracted increasing attention for investigation. This study examines the effects of incorporating graphene oxide (GO) into NaOH-activated slag (AAS) pastes and mortars, focusing on workability, phase composition, mechanical properties, and the local mechanical properties of the interfacial transition zone (ITZ) between sand and paste. The experimental results indicate that the addition of GO decreases the flowability of NaOH-AAS pastes, with noticeable aggregation at concentrations above 0.03 wt%. Furthermore, GO enhances the hydration degree of ground granulated blast furnace slag (GGBS), leading to an increased amount of C-A-S-H gel without introducing new phases. In terms of macro performance, incorporating 0.03 wt% GO significantly improves the compressive and flexural strengths of NaOH-AAS mortars by 10.6 % and 17.9 %, respectively. Additionally, the presence of GO reduces the ITZ thickness from 30 to 15 micrometres in NaOH-AAS mortars, which likely contributes to the enhanced mechanical performance.
研究领域:
材料科学
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水泥基材料
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纳米复合材料
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建筑材料化学
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界面工程
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BIOMACROMOLECULES
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2025
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IF 5.4
Fei Jiang,Qing Huang,Xianqing Lv,Zhiming Dong,Zhuotong Wu,Lu Chen,Jianguo Li,Lihui Chen,Li Shuai,Chengke Zhao
Selective oxidation of polyol-containing cellulose is significant for the development of cellulose-derived functional materials. While conventional oxidation methods readily introduce aldehyde groups at the C2/C3 positions (accompanied by ring-opening of anhydroglucose units) or carboxyl groups at the C6 positions in cellulose, selective oxidation to generate aldehyde functionalities specifically at the C6 position remains challenging. Herein, we demonstrate that 2-Iodoxybenzoic acid (IBX) acts as an efficient and selective oxidant for converting the primary alcohol at the C6 position of anhydroglucose units to aldehyde groups under mild conditions. Monosaccharide model studies confirmed C6-specific oxidation. This method was successfully applied for the surface modification of microcrystalline cellulose (MCC, predominantly Iβ allomorph) and bacterial cellulose (BC, mainly Iα allomorph), achieving aldehyde contents of 0.96 and 0.93 mmol g-1, respectively, with 0.6 and 0.5 equiv of IBX per anhydroglucose unit. Crystallinity analysis showed that oxidation with IBX leads to a significant decrease of crystallinity but has a negligible effect on the cellulose allomorph. This study presents a novel approach for the preparation of C6-aldehyde cellulose, enabling precise, selective modification and advancing functional material development.
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JOURNAL OF NANOBIOTECHNOLOGY
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2025
·Vol. 23
·期 1
·1-15
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IF 12.6
He Jianan,Cai Jianxun,Zhang Jingjing,Li Yang,Wei Kunpeng,Liu Chenshu,Yan Leye,Hu Xinyan,Huang Lin,Gan Hairun,Wang Dashuai,Li Bing,Zhang Huitao,Pang Pengfei
Intraluminal drug coated devices, such as paclitaxel (PTX)-coated balloons, are commonly used to treat arterial occlusive diseases caused by atherosclerosis. However, their efficacy is limited by drug loss, poor drug retention, insufficient penetration and high costs. Nanoparticles with molecular targeting capabilities offer a promising solution to these challenges. Collagen hybridizing peptide (CHP) specifically binds to degraded collagen in atherosclerotic plaques, enabling precise molecular imaging and targeted therapy. In this study, we demonstrated that collagen degradation was significantly elevated in atherosclerotic plaques and could be effectively identified by CHP in both atherosclerosis patients and mice models. Using the emerging copper-free click chemistry reaction, we functionalized the widely used albumin-based indocyanine green nanoparticles and albumin-bound paclitaxel nanoparticles with CHP, developing a targeted nanoplatform for molecular imaging and therapy. In vivo photoacoustic (PA) imaging and ex vivo fluorescence (FL) imaging revealed significantly enhanced PA and FL signals in carotid artery and aorta plaques with CHP functionalized nanoparticles engaging. Furthermore, therapeutic evaluations showed that CHP significantly improved the plaque-targeting capability of albumin-bound paclitaxel nanoparticles, thereby enhancing their therapeutic efficacy against atherosclerotic plaques. These findings highlighted CHP-functionalized albumin nanoparticles as a promising strategy for precise and effective atherosclerosis molecular imaging and treatment. Graphical Albumin nanoparticles functionalized with CHP by copper-free click chemistry reaction, enhancing the imaging ability and therapeutic efficacy for atherosclerosis by elevated plaque targeting capability.
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Journal of Materials Chemistry C
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2025
·Vol. 13
·期 48
·24000-24006
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IF 5.1
Zhenxu Li,Xinhua Zhao,Yi Zhang,Zhu Zhang,Tingting Wang,Dachi Yang
Palladium (Pd) and its alloys are highly desired for stable hydrogen (H2) sensing at low temperatures (<273 K) in harsh environments, which need further improvement. Herein, Pd and gold (Au) nanotube arrays (PdAu NTs) with tuned surfaces are developed for low-temperature H2 sensing. By combined anodic aluminum oxide (AAO) template-confined electrodeposition and wet-chemical etching, the dopant gold (Au) facilitates the formation of PdAu NTs with various shapes and a wall thickness of ∼10–23 nm. Typically, the as-prepared PdAu NTs take on shapes including broken NTs, smooth NTs, and NTs with incomplete walls. Remarkably, PdAu NTs with rough and broken surfaces (RB-PdAu NTs) exhibit stable H2 sensing within the ∼188–388 K temperature range, in which the critical temperature is ∼188 K. Comparatively, no temperature-activated “reverse sensing behavior” is observed in PdAu NTs with smooth surfaces (S-PdAu NTs). Theoretically, such stable H2 sensing is interpreted as the tuned surfaces of NTs modulating the saturated adsorption of H2, while the Pd nanostructures with Au dopant further improve the stability of H2 sensing. Potentially, the approach to surface-tuned PdAu NTs could be expanded to other sensing materials for low-temperature gas sensing.
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PROPELLANTS EXPLOSIVES PYROTECHNICS
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2026
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IF 2.2
Slimane Abdous,Mehdi Derradji,Karim Khiari,Oussama Mehelli,Abdelmalek Habes,Timtaoucine Mhamed El Hadi,Abdelwahad Berrouane
Modern-day ammunition typically contains only about 30 wt% of payloads such as RDX-based explosives, while the majority of the mass is made up of structural materials like metals (e.g., steel and aluminum) that do not contribute to the energy output. This composition underscores a significant potential for enhancement through the use of reactive structural materials (RSMs). These advanced materials are engineered to fulfill dual roles: maintaining structural integrity and releasing chemical energy upon activation. Rigid polymers with glass transition temperatures higher than operational temperatures are emerging as promising candidates to replace heavy, less effective, and metal-based materials (e.g., alloys, thermites). In line with this vision, we present the synthesis and characterization of a resorcinol 2,4-paranitroaniline-based benzoxazine (RE-dnph) energetic polymer, utilizing resorcinol as a green phenolic source. The energetic properties of this polymer were thoroughly assessed. The newly developed polymer demonstrated promising energetic performance with ignition temperatures ranging from 260°C to 265°C, and a combustion heat release of 23.33 kJ·g −1 during ignition. Differential scanning calorimetry-thermogravimetric analysis (DSC-TGA) analysis results indicated that these polymers are highly suitable for use as RSMs due to their combination of rigidity at operational temperatures and exceptional energetic performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Saeed Rehman,Tao Chen,Hongjuan Sun,Muddasir Hanif,Tongjiang Peng,Osama Tariq Satti,Aref Alshameri
Phthalate esters (PAEs), widely used as plasticizers, persist as recalcitrant organic pollutants with severe ecological implications. In this study, a dual-step pyrolysis strategy was employed to engineer a Fe-N-RHC@p-MMt composite photocatalyst enriched with high-valent Fe sites, nitrogen dopants, and oxygen vacancies. The tailored hybrid achieved a remarkable 92 ± 1.4% degradation of dimethyl phthalate (DMP) with a pseudo-first-order rate constant of 0.64 min −1 in a peroxydisulfate (PDS)-mediated oxidation system under near-visible light irradiation. Structural and spectroscopic analyses revealed graphitized carbon frameworks with superior conductivity, efficient charge migration, and abundant Fe(IV) = O species formation. Mechanistic analysis reveals that Fe₄N centers regulate interfacial electron transfer, stabilize high-valent Fe(IV) = O species, and drive selective non-radical PDS activation dominated by singlet oxygen ( 1 O₂). Moreover, the generated intermediates exhibited significantly reduced toxicity, mutagenicity, and bioaccumulation risks (although intermediates P1, P3, and P6 showed elevated toxicity), validating the process's environmental compatibility. These results highlight Fe-N-RHC@p-MMt as a safe and efficient catalyst for sustainable remediation of PAE-contaminated water.
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JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Guanwen Su,Wenrui Yang,Guozhao Liu,Xiaolong Yang,Jiasong Zhang,Baoyang Wu,Leping Dang,Hongyuan Wei,Zhanzhong Wang
Accurate and rapid identification of pathogens is essential for public health and infectious disease control. Despite notable advances, label-free, high-throughput, and sensitive bacterial detection in complex samples remains a significant challenge. An interpretable multimodal deep learning model, RaSizeNet, was developed by integrating surface-enhanced Raman spectroscopy (SERS) and inertial microfluidic size distribution for high-precision identification of complex bacterial populations. Fe@PCN-Au hybrid particles exhibiting strong SERS activity and magnetic responsiveness were synthesized and embedded into a dual-zone microfluidic chip to enable efficient bacterial enrichment, size-based separation, and signal enhancement. A large-scale multimodal dataset comprising nine representative bacterial species was constructed by combining SERS spectra and outlet distribution data. A size-guided cross-modal attention mechanism was introduced to improve spectral discriminability and model robustness while maintaining independent modality representations. RaSizeNet achieved an average accuracy of 96.22 % in complex samples, significantly outperforming unimodal (SERSNet, 82.23 %) and conventional multimodal (MultiNet, 92.81 %) models. The model also demonstrated superior adaptability and stability under extreme concentrations, varying flow rates, and diverse media conditions. This work establishes a promising framework for integrating microfluidic-SERS sensing with artificial intelligence, providing both theoretical and technical support for real-time multimodal pathogen detection.
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FOOD RESEARCH INTERNATIONAL
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2026
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IF 8.8
Yonglin He,Jiahuan Sui,Yi Yang,Danhe Xu,Wenting Shang,Zhi Zhou,Yao Li
This study evaluated the effectiveness of four post-processing treatments—pasteurization at 65 °C (P65, 10 min) and 85 °C (P85, 10 min), microwave heating (MS, 750 W, 30 s), and retort treatment (RTS, 121 °C, 10 min)—for microbial reduction and quality maintenance of vacuum-packed potato cakes. No statistically significant differences ( p > 0.05) were observed in proximate composition (moisture, ash, protein, total starch). However, starch fractions appeared process-sensitive, with P65 increasing resistant starch and RTS/MS increasing apparent amylose. Color shifts were detected with L* and a* increasing. Meanwhile, b* decreased in P65/P85/MS but not in RTS. Texture and small-amplitude rheology were maintained across groups, consistent with the pre-formed dense, continuous matrix observed on SEM. Using SPME-GC–MS, 21 volatiles were identified, and hydrocarbons and aldehydes dominated after all treatments. On multivariate analyses, P65/P85/MS clustered close to the control, while RTS diverged and exhibited the lowest aldehyde diversity/abundance. Subsequently, odor-activity values suggested that aldehydes were likely the principal aroma contributors. In sensory tests, only RTS reduced the overall acceptability, while P65/P85/MS largely preserved color and favorable odors. Critically, all treatments required subsequent continuous refrigeration at 4 °C to maintain microbial counts below 10 5 CFU/g over 14 days. Storage under temperature abuse conditions (25–37 °C) led to microbial exceedance of this limit within 6–8 days, underscoring that these temperatures constitute spoilage risks, not viable storage options. Overall, microwave or mild thermal pasteurization best balanced microbial control with color, aroma, and texture preservation, supporting their potential applicability for preparing refrigerated ready-to-eat potato cakes.
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International Journal of Nanomedicine
·
2026
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IF 8.7
Yanrui Liang,Guodong Shen,Keyu He,Weisheng Wang,Bing Xiao,Tian Lin,Huilin Huang,Zhenyuan Li,Yingxin Ren,Zean Wang,Yiheng Luo,Weihong Guo,Yanfeng Hu,Guoxin Li
Introduction Systematic lymphadenectomy is crucial in gastric cancer surgery for improving patient prognosis. However, current clinical lymph node (LN) mapping relies on fragmentary single-modal imaging agents, which suffer from low accuracy in N-staging and lack integration between preoperative and intraoperative visualization.Methods We developed polydopamine-based nanoparticles (PEG-PDA@IR820/Gd(NH2)2) termed PPIG NPs) as a unified multimodal imaging agent for magnetic resonance (MR), optical, near-infrared (NIR) fluorescence, and thermal LN mapping. PPIG NPs were synthesized in three distinct size ranges (50–100 nm, 100–150 nm, 150–200 nm). Their imaging performance and lymphatic drainage kinetics were evaluated in vivo in a mouse model. Furthermore, the efficacy of PPIG NPs for LN identification was validated in fresh human gastric and colon cancer specimens via subserosal injection.Results The differently sized PPIG NPs exhibited tunable and size-dependent lymphatic drainage and retention. In mice, they enabled integrative pre-operative (MR) and intra-operative (optical/NIR fluorescence/thermal) multimodal mapping of popliteal LNs. In human specimens, PPIG NPs specifically delineated lymphatic vessels and LNs. Guided by this dual-modal (optical/NIR) mapping, lymphadenectomy in human gastric specimens achieved a significantly higher LN yield compared to conventional visual inspection (mean number: 55.4 vs 36.8, p < 0.05). The approach also facilitated the precise identification of residual lymphatic vessels post-dissection.Conclusion PPIG NPs provide an integrative pre- and intra-operative multimodal LN mapping platform. This strategy, enabling “see-before-cut” planning and “trace-while-cutting” navigation, demonstrates superior accuracy for LN and lymphatic vessel identification compared to current fragmentary techniques, showing promising potential for guiding precise lymphadenectomy in gastric cancer.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Huihui Gao,Xiankun Wu,Huaizhi Liu,Zhongkai Wang
With concerns about environmental pollution and the depletion of fossil resources, it is essential to adopt strategies to provide multifunctional materials by utilizing abundant and sustainable feedstocks. However, developing biobased polymeric materials with properties comparable to petroleum-based counterparts remains a great challenge. In this work, a series of polyamides were synthesized from plant oil-based E-octadec-9-enedioic acid monomer (C18) and diethylenetriamine via a facile one-pot approach, incorporating both dynamic hydrogen bonds and permanent covalent cross-links. By adjustment of the molar ratio of C18, the resulting polyamide (PA1.2) presents remarkable mechanical properties, including a high tensile strength of 30.3 MPa and an elongation at break of 611.8%. Moreover, the combination of reversible H-bonds and flexible long aliphatic chains endows elasticity and reprocessability to the thermosetting polyamides. The significant H-bond interactions, along with multipolar functional groups, also contribute to the polyamides’ strong adhesion to a variety of substrates, such as steel, wood, and other materials. These structural characteristics synergistically enhance the adhesion performance, with the polyamide adhesive achieving a robust adhesion strength of 14.28 MPa and excellent temperature adaptability. Notably, all of the obtained polymers exhibit unexpected fluorescence in the absence of conventional chromophores, presenting potential applications in fluorescent anticounterfeiting. Thus, this work not only offers a strategy for designing multifunctional polyamides but also provides insights into the use of biomass resources in anticounterfeiting technologies.
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INORGANIC CHEMISTRY
·
2026
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IF 4.7
Yarong Chai,Bo Gao,Song Xu,Qun Xu
Electrocatalytic conversion of nitrate to ammonia is a rapidly evolving field due to its potential applications toward nitrate pollution remediation and sustainable ammonia synthesis. As a group of well-established electrocatalysts, the activity of Cu-based materials is highly related to the coordination environment. Herein, a novel Cu–La-based dual-atom catalyst (Cu–La/DAC) was prepared using a Robson-type bimetallic Cu–La complex as precursor, where the square-planar Cu center of Cu–La/DAC effectively deviates due to the presence of adjacent La atom. As a result, the HOMO (dxy) energy of Cu is effectively reduced, which facilitates the formation of low-valent Cu and subsequent electrocatalysis. Compared to Cu2/DAC analogue containing square-planar Cu, Cu–La/DAC exhibits significantly enhanced activity toward electrocatalytic nitrate (NO3–) reduction to ammonia (NH3) (yield: 14.02 mg h–1 cm–2; Faraday efficiency: 88.42%), which is theoretically attributed to the reduced energy barrier of NO3– adsorption and *NO3 deoxygenation induced upon the coordination environment modulation of Cu.
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