APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Zhenglong Chen,Yeting Tu,Zhile Zhao,Yiqing Chen,Jingzheng Weng,Hui Lin,Yudong Lu
The engineering of multifunctional plasmonic interfaces on flexible substrates is paramount for advanced molecular sensing. In this study, a high-performance, hierarchical bimetallic SERS substrate, featuring an Ag NWs/PDDA/GO/Ag NCs sandwich architecture, was fabricated on cellulose filter paper via a facile electrostatic self-assembly strategy. By employing poly(diallyl dimethylammonium chloride) (PDDA) as a molecular linker to regulate interfacial charges, we achieved the sequential, high-density loading of 1D silver nanowires (Ag NWs), 2D graphene oxide (GO), and 0D silver nano cubes (Ag NCs).Physicochemical characterizations revealed that the ultrathin GO layer functions as a dielectric nano spacer, which effectively facilitates vertical plasmonic coupling between the bimetallic components to generate high-density 3D “hotspots” while simultaneously serving as a passivation barrier against metallic oxidation. The synergy of electromagnetic enhancement (EM) from the hierarchical sandwich structure and chemical enhancement (CM) via interfacial charge transfer resulted in an exceptional enhancement factor of 2.82 × 10 6 .The engineered substrate enabled the ultra-sensitive detection of paraquat with a limit of detection (LOD) of 10 -10 M. Furthermore, it demonstrated remarkable matrix-robustness for the in situ analysis of pesticide residues in untreated tea broth, maintaining high signal reproducibility (RSD < 7%). This work provides a versatile interfacial engineering strategy for the controllable assembly of heterogeneous nanostructures, paving the way for high-performance, field-deployable surface-sensitive applications in food safety and environmental monitoring.
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CARBON
·
2026
·
IF 12.7
Yahui Wang,Rui Xue,Yi Liu,Yongke Wang,Chenglong Ding,Xiangyin Lv,Zongsheng Chen,Zhigang Li,Changqi Zhou,Jiaming Shi
In the face of increasingly complex electromagnetic (EM) pollution, heterogeneous interface engineering is an effective strategy to promote EM response. The enrichment of heterogeneous interfaces can be achieved by constructing hierarchical hollow structures. In this study, waxberry-like hierarchical hollow carbon nanospheres (HHMC) embedded with ultrafine Mo 2 C nanoparticles (NPs) are synthesized by carbonization of phenolic resin microspheres using ammonium molybdate as a molybdenum source and SiO 2 as a pore-forming agent. Among them, the good dispersion of Mo 2 C NPs forms a large number of nanoscale heterogeneous interfaces, which strengthens the polarization relaxation process. Concurrently, the hierarchical hollow structure optimizes the impedance matching with the air medium. Thanks to these properties, the prepared HHMCs exhibit remarkable EM attenuation capacity with a minimum reflection loss (RL) of -59.6 dB and an effective absorption bandwidth (EAB) up to 4.8 GHz. Furthermore, macroscopic three-dimensional (3D) metasurface simulations reveal its ultra-broadband absorption characteristics, which extend from 10.4 GHz (7.6-18 GHz) to 14.1 GHz (3.9-18 GHz) as the thickness increases from 1.4 mm to 3 mm. This result provides fundamental guidance for efficient EM energy attenuation through heterogeneous interface engineering.
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Metals
·
2026
·Vol. 16
·期 3
·323
·
IF 3.1
Heng He,Yongbin Yang,Lin Wang,Guangliang Wu,Dan Wang,Qian Li,Yan Zhang,Shichao He,Tao Jiang
Thiosulfate leaching is considered a promising alternative to cyanidation for gold extraction because it can be achieved at a low cost. However, existing leaching systems struggle to balance leaching efficiency with thiosulfate consumption. Herein, a novel synergistic Cu-CH3NH2-NH3leaching system was proposed, balancing thiosulfate consumption and gold leaching efficiency through a mixed-ligand strategy. Thermodynamic analysis revealed that the steric hindrance and electron-donating effects of methylamine effectively block the oxidative decomposition pathway of thiosulfate by Cu(II), significantly reducing thiosulfate consumption. However, this also reduced the dissolution rate of gold. By introducing ammonia to adjust the Cu(II) coordination environment, the system achieved a gold leaching rate of 88.6% with a thiosulfate consumption of 14.2 kg/t-ore, significantly outperforming the traditional Cu-NH3system. In this system, the gold leaching process mainly is catalyzed by the mixed-ligand complex Cu(NH3)x(CH3NH2)4−x2+. Within the coordination sphere, the methyl group of CH3NH2inhibits the axial attack of S2O32−on Cu(II) via electron-donating and steric hindrance effects, thereby blocking the redox pathway of S2O32−; simultaneously, NH3provides active sites to promote the gold oxidation. This study provides a vital theoretical basis and technical support for developing green, low-cost, and high-efficiency gold leaching processes.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 28
·14910-14919
·
IF 3.9
Yang Qiqi,Hu Minglv,Zhang Wenkang,Zhou Ke,Liang Zheng,Gu Qilin,Zhong Zhaoxiang,Xing Weihong
Janus
ceramic membranes with asymmetric wettability have
proven
highly effective for preparing water-in-diesel (W/D) emulsions. Therefore,
the fabrication of such tubular membranes for continuous emulsification
processes is of significant interest. In this study, tetraethyl orthosilicate
(TEOS) and methyltriethoxysilane (MTES) were used as precursors, with
ammonia serving as the catalyst, to achieve the controlled synthesis
of hydrophobic silica (SiO 2 ) particles. Subsequently, these
hydrophobic SiO 2 particles were coated onto the inner walls
of tubular silicon carbide (SiC) membranes (mean pore size = 1.2 μm)
via a simple dip-coating process. Results indicate that controlling
the ammonia concentration allows for the synthesis of SiO 2 particles with sizes that appropriately match the pore dimensions
of the tubular SiC membranes. As the SiO 2 solid content
was increased from 0.10 to 2.00 wt %, the average pore size of the
tubular SiC membranes decreased from 1.2 to 0.52 μm. Concurrently,
the apparent water contact angle on the inner walls increased significantly
from 15 ° to 142 ° , while the outer surface remained hydrophilic.
Among the membranes with various surface wettability, the configuration
featuring a hydrophobic inner wall and a hydrophilic outer surface
proved most effective for emulsion production, yielding W/D emulsions
with smaller average droplet diameter and uniform size distribution.
This work introduces an effective method for simultaneously tuning
the surface wettability and pore structure of tubular SiC ceramic
membranes, thereby establishing a foundation for the continuous membrane
emulsification of diesel fuel.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Die Yuan,Kai Li,Xuebin Lu,Chaoqin Zhao,Guijian Zhang,Ping Ning,Dongdong Zhang,Xin Sun,Shuangyou Bao,Chi Wang
A dual-channel electron-donation pathway enables reductant-free Fe 2+ /Co 2+ regeneration. • Pollutants and S 2- synergistically drive reversible M(III)/M(II) redox cycling. • Co 9 S 8 /FeS/PMS achieves rapid and complete levofloxacin degradation within 10 min. A magnetic Co 9 S 8 /FeS composite derived from cobalt slag was developed for reductant-free PMS activation through a novel dual-channel electron-donation pathway involving S 2- species and levofloxacin (LEV). The catalytic performance and mechanism were investigated through degradation kinetics, reactive-species identification, X-ray absorption fine spectroscopy (XAFS), X-ray photoelectron spectroscopy (XPS) analyses, density functional theory (DFT) and life cycle assessment. The Co 9 S 8 /FeS/PMS system completely degraded LEV within 10 min (k = 0.4498 min −1 ), maintained efficient removal over pH 3.0–11.0 and after five cycles (>95%), with 1 O 2 as the dominant reactive species. DFT calculations, together with XAFS/XPS analyses, revealed that S 2− and LEV serve as dual electron donors to facilitate Fe 3+ /Co 3+ reduction, achieving nearly complete Fe/Co redox cycling and sustained PMS activation. Compared with conventional single-electron-donor Fenton-like systems, this strategy eliminates the need for external reductants and substantially reduces environmental impacts, offering a sustainable route for converting cobalt slag into recyclable catalysts for antibiotic wastewater treatment. Download: Download high-res image (176KB) Download: Download full-size image
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Journal of Energy Storage
·
2026
·
IF 10.7
Tingting Wei,Jiemin Dong,Xu Cheng,Yanhua Zhang,Jiaxin Zhang,Ming Liang,Jianfeng Li,Ting-Feng Yi
The Fe–Cu–Mn based layered oxides have gained considerable attention as particularly promising cathode materials for sodium-ion batteries (SIBs) due to their low cost, earth abundance, and favorable electrochemical properties. However, current research often treats this system as a unified matrix, which obscures the specific contributions of the individual Fe, Cu, and Mn components in determining structural stability and electrochemical performance. Herein, we systematically investigate the ternary Fe–Cu–Mn system without the addition of extraneous elements. By precisely tuning the stoichiometric ratios of Fe, Cu, and Mn within a Mn-rich layered framework, a direct correlation is established between composition, structure, and electrochemical behavior. It reveals that optimizing the Fe/Cu/Mn ratio effectively suppresses undesirable phase transitions, enhances structural stability, and results in superior electrochemical performance. The Na 0.70 Fe 0.15 Cu 0.15 Mn 0.70 O 2 (NFCM-0.70) cathode delivers a high initial energy density of 293.87 Wh kg −1 (based on the mass of the cathode) and presents the excellent capacity retention of 82.9% after 100 cycles at 0.2C. This work underscores the importance of rationally controlling intrinsic component ratios as a strategy for developing low-cost, high-performance layered oxide cathodes for SIBs.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 31
·42789-42799
·
IF 7.8
Hu Kaihan,Sun Songyuan,Chen Yue,Zhang Shimeng,Zhu Yuju,Li Linyun,Cai Jiahui,Tan Lei,Chen Jingbo
High-capacity SiO x anode materials are difficult to commercialize due to poor conductivity and large volume fluctuations. Constructing nanostructured SiO x /C composites has been proven as one of the effective approaches. However, the structural design of a SiO x /C composite usually involves the use of templates and relies on chemical etching and organic solvents to remove the template, which causes environmental pollution and hinders the reuse of templates. This study proposes a green template strategy. By exploiting its phase transition of poly( N -isopropylacrylamide) (PNIPAM) at specific temperatures, a nanoscale template is provided for the hydrolysis and deposition process of silicon source and solves the problem when removing template. The prepared SiO x @NC is features a gradient distribution of silicon valence states, as demonstrated by X-ray photoelectron spectroscopy depth profiling. N-doped carbon coating constructs a stable interfacial framework that facilitates electron transport and lithium-ion diffusion. The discharge capacity of SiO x @NC was maintained at 612.2 mAh g −1 after 500 cycles at a current density of 1 A g −1 . The material in the Li-ion full cell delivers a reversible capacity of 117.57 mAh g −1 , demonstrating its promising practical applications in LIBs. Our work will open up a feasible and eco-friendly preparation path for silicon-based anode materials in high-energy-density and long-life LIBs.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2026
·Vol. 65
·期 31
·16632-16643
·
IF 3.9
Huang Heng,Yin ChunYu,Xia Tao,Zhou Yebin,Wan Dongchuang,Zhu Xiaofeng,Jiang Kaijun,Hu Rongrui,Xiang Zhenli,Ma Chaofan,Li Xiaonian,Lu Chunshan
Chlorinated volatile organic compounds (CVOCs) hydrodechlorination
is hindered by chlorine poisoning and the instability of monometallic
catalysts, limiting their practical application. In this work, long-range
ordered PdCu intermetallic compounds were synthesized via a microwave-assisted
method. Characterization confirmed that microwave treatment induced
strong Pd–Cu electronic interactions and lattice ordering,
thereby facilitating the formation of intermetallic phases. Catalytic
evaluations demonstrated that the PdCu/C-Ordered catalyst achieved
an ethane production rate of 4.47 mmol·g cat –1 ·h –1 at 300 ° C with an apparent activation
energy of 31.28 kJ/mol, while maintaining exceptional stability over
a 300 h continuous operation. Density functional theory (DFT) calculations
further elucidated that the intermetallic phase, characterized by
a d-band center positioned closer to the Fermi level, exhibited enhanced
reactant adsorption and activation capabilities. Concurrently, it
significantly lowered the HCl desorption energy barrier, thereby effectively
mitigating chlorine poisoning effects. This research provides a novel
pathway for the design of high-efficiency hydrodechlorination catalysts
based on the precise regulation of electronic structures.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhixiao Wang,Qun Li,Tao Yang,Qiuye Liu,Kang Wang,Enhui Wang,Yanglong Hou,Xinmei Hou
Triple-layered C@SiC@SiO 2 microspheres were successfully fabricated. • Superb RL of −62.95 dB and 3.05 GHz bandwidth are achieved at thinness. • Gradient impedance structure boosts wave penetration and attenuation. Gradient structural engineering holds great promise in boosting microwave absorption capability by realizing smooth impedance matching and manipulating electromagnetic wave transportation within materials. Herein, well-defined triple-layered C@SiC@SiO 2 microspheres with a dielectric gradient architecture are rationally constructed via hydrothermal self-assembly followed by carbothermal reduction. By delicately regulating the composition ratio of C/SiC/SiO 2 , the optimized absorber achieves outstanding room-temperature microwave absorption properties: a minimum reflection loss (RL min ) of −62.95 dB at a thin thickness of 1.73 mm, and a broad effective absorption bandwidth (EAB max) of 3.05 GHz (RL < −10 dB) at merely 1.68 mm, which covers the most of the X-band. The excellent absorption performance is synergistically contributed by the significantly optimized impedance matching originating from the three-layer dielectric gradient architecture, abundant heterogeneous interfaces inducing intense interfacial polarization, as well as rich dipoles favoring strong dipole polarization. Moreover, the gradient structure also promotes multiple scattering and reflection of electromagnetic waves, further enhancing energy attenuation. This work not only develops a high-performance microwave absorber but also offers a feasible strategy for designing gradient heterostructures toward advanced electromagnetic wave absorption applications. Download: Download high-res image (130KB) Download: Download full-size image
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DESALINATION
·
2026
·
IF 9.9
Shen Zhang,Wencai Cheng,Junwen Tan,Benyao Yu,Tianjun Li,Congcong Ding,Xirui Lu,Jun Wen,Hao Li
A process for efficient enrichment of uranium from seawater on fiber was designed. • Seawater uranium extraction fiber after real sea trial was used in the study. • Seawater uranium extraction fiber after repeated use was treated by microwave pyrolysis. • The uranium in the solution was concentrated and purified by ion exchange method. • Lay the foundation for the closed loop of seawater uranium extraction project Developing an efficient process suitable for the treatment of amidoxime-functionalized fibers after multi-cycles using and the enrichment of uranium is crucial for the closed-loop of uranium extraction from seawater. The enrichment process is divided into four major steps, which are microwave pyrolysis, acid leaching of uranium-containing ash, ion exchange and chemical precipitation. A total of 9.14 g of uranium-containing ash was obtained by microwave pyrolysis of 100 g of fiber at 800 °C. Uranium in uranium-containing ash exists in the form of uranium oxide dominated by UO 3 . Then, the uranium-containing ash after pyrolysis was leached with 1 M sulfuric acid solution, and 97.12% uranium could be leached. Through high resolution mass spectrometry and simulation calculation, it was found that uranium in the leaching solution mainly existed in the form of [UO 2 (SO 4 ) 3 ] 4− anionic complex. D201 resin was used to exchange the uranium in the acid leaching solution. The enrichment efficiency of uranium was 98.22%, and the distribution ratio of uranium was about 55.07. Finally, ammonia was used to precipitate uranium, and the precipitation efficiency was 99.43%, and 346.51 mg of uranium compound was obtained. The uranium enrichment efficiency of the whole process is about 94.86%. The mass fraction of uranium in the uranium compound was about 28.3%. It exists in the form of hexavalent uranium oxide. This study contributes to the realization of closed-loop and industrialization in the field of seawater uranium extraction. Download: Download high-res image (266KB) Download: Download full-size image
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SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Ziqiang Liu,Fujian Tang,Yufang He,Jie Huang
Liquefied petroleum gas (LPG) is a highly flammable fuel widely used for cooking, heating and transportation, making real-time leak detection essential for preventing fire, explosion, and suffocation hazards. In this study, a room-temperature no-core fiber (NCF) sensor coated with CoFe 1.96 La 0.04 O 4 /LaFeO 3 heterostructures was developed for LPG detection. The heterostructures were characterized using XRD, Raman spectroscopy, SEM, TEM, XPS, PL spectroscopy, and UV–vis spectroscopy. Experimental results showed that La incorporation and heterostructure formation refined the particles size, improved surface accessibility, and modulated the electronic structure and band gap, thereby enhancing LPG adsorption, carrier redistribution, and the refractive-index response of the sensing film. Among the investigated compositions, the 1:1 CoFe 1.96 La 0.04 O 4 /LaFeO 3 heterostructure exhibited the best performance, achieving a sensitivity of −2.87 pm/ppm, a response/recovery time of 36/69 s, and a limit of detection of 39.7 ppm, together with excellent selectivity and stability. The effects of temperature and relative humidity were also quantified and compensated to improve detection accuracy. These results demonstrate that the proposed sensor is a promising, low-cost platform for LPG leak detection in domestic and industrial applications.
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JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2026
·
IF 6.7
Yuan Liu,Jialong Chen,Zhenjie Sun,Chen Yang,Yuhao Bao,Shiliang Wu,Feiqiang Guo
Selective production of ketone-rich bio-oil from biomass pyrolysis vapors remains challenging because catalyst acidity/basicity, redox properties, and defect chemistry must be precisely balanced. In this work, a series of CaO–CeO 2 composite oxides with a Ca/(Ca+Ce) molar ratio of 0.3 were synthesized by co-precipitation and calcined at different temperatures for the ex-situ catalytic pyrolysis of corn stover holocellulose. Catalytic performance was evaluated by Py-GC/MS and a two-stage fixed-bed reactor, while the catalysts were characterized by XRD, BET, XPS, TEM, and EDS. The results showed that calcination temperature significantly affected crystallite size, surface area, and defect density, thereby governing ketone selectivity. Among the catalysts, Ca 0.3 Ce 0.7 O 2-δ -600 exhibited the highest ketone content of 47.50% in Py-GC/MS, which was associated with its small crystallite size (15.7 nm), relatively high specific surface area (40.59 m 2 /g), and abundant surface oxygen vacancies. In fixed-bed experiments, lowering the catalytic-bed temperature from 600 to 450 °C reduced the gas yield from 62.00% to 51.63% and increased the liquid yield from 19.56% to 29.76%. Meanwhile, the relative ketone content in bio-oil reached a maximum of 33.19%, while the acid fraction decreased to 4.6%. After three consecutive cycles, the catalyst still maintained high ketone contents, and regeneration restored more than 95% of the initial performance. These results demonstrate that defect-engineered Ca–Ce composite oxides are effective and stable catalysts for producing ketone-rich bio-oil under relatively mild catalytic conditions.
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