Catalysts
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2026
·Vol. 16
·期 2
·
IF 4.5
Li Bai,Junlong Zhao,Yunyu Ning,Jiawen Lv,Rui Bao,Pinwen Zhu,Yanli Chen,Huilian Liu,Qiang Tao
The intrinsic electronic and structural properties of the transition metal rhenium (Re) endow it with substantial application potential in electrocatalysis. However, the high cost of Re requires the development of Re-based materials to reduce cost and optimize the performance at the same time. Herein, a one-step high-pressure and high-temperature (HPHT) synthetic strategy is proposed for fabricating Re-C phase gradient composites, presenting a facile and efficient pathway to develop high-performance hydrogen evolution reaction (HER) electrocatalysts. By studying the structural evolution of Re toward ReC and uncovering its intrinsic mechanism, the regulation of the material’s electrocatalytic activity was successfully realized. Experimental results confirm that HPHT conditions of 5 GPa and 1400 °C effectively induce the formation of multiple crystalline phases of Re-C solid solution and ReC in the Re-C composite. These phases have coherent phase boundaries and form the phase gradient composites. Compared with element Re, the synergistic effect of phase gradient composites broadens the electronic state range by increasing electron transfer from Re to C in ReC (increasing the binding energy) and reduces the binding energy in Re-C solid solution. The broad electronic states range in the phase gradient composites exhibits optimal HER overpotentials of 150 mV (acidic electrolyte) and 166 mV (alkaline electrolyte) at 10 mA cm−2. These findings provide a promising strategy to boost catalysts’ electrocatalytic performance via constructing phase gradient composites.
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Crystals
·
2026
·Vol. 16
·期 2
·132
·
IF 2.9
Bo Li,Jiao Sun,Yuxing Lei,Tingting Jiang,Haitao Yang
Flexible dielectric composite materials capable of converting power frequency electric fields into measurable electrical signals are of great significance in the field of non-contact electric field sensing in power systems. In this paper, graphene/nitride heterojunction powders were prepared using three representative nitrides (AlN, BN, and Si3N4) and embedded in polydimethylsiloxane (PDMS) to prepare flexible composite films with a fixed filler content of 5.0 wt%. Scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) confirmed the successful formation of the heterojunctions. The results showed that the nitride-related elements (Al, Si and N) were spatially correlated with the graphene-rich regions, thus providing abundant interfacial contact sites. Dielectric spectroscopy (50 Hz–50 kHz) showed that all samples exhibited typical dispersive behavior, with the real part of the dielectric constant decreasing monotonically with increasing frequency, and the loss tangent also decreasing smoothly. Under a 50 Hz parallel-plate electric field, the normalized induced voltage amplitude (PDMS = 1) increases to 1.070 (≈7.0%) for G/PDMS, and further to 1.0723–1.07447 (≈7.23–7.45%) for AlN–G/PDMS, BN–G/PDMS, and Si3N4-G/PDMS. DFT calculations confirm that the graphene/nitride interface has a stable structure with negative binding energies (−2.241, −1.773, and −3.062 eV for AlN–G, BN–G, and Si3N4–G, respectively). Significant charge redistribution and Mulliken charge transfer (0.0538, 0.2047, and 0.0244 eV, respectively) are present at the interface, accompanied by Fermi level density of states modulation and a small bandgap opening (~0.101 eV) in BN–G. These results collectively support the interfacial polarization-driven mechanism and provide a comparative basis for selecting nitride components in graphene-based heterojunction fillers in flexible dielectric electric field-sensing layers.
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Analytical Methods
·
2026
·
IF 3
Yao Tian,Mengsi Liang,Yongdong Wei,Yuxin Wang,Ning-Bo Li,Yaoyong Wang
Zearalenone (ZEN) is a carcinogenic mycotoxin commonly found in grains, cereals, and dairy products, posing cancer risks to humans and animals. Chronic high-dose ZEN exposure can cause liver disease, immunosuppression, kidney damage, and tumorigenesis. Sensitive and efficient ZEN detection is therefore essential for protecting human and animal health. To meet the need for sensitive, selective, and low-cost mycotoxin sensors in real food samples, we developed a novel ratiometric electrochemical aptamer sensor for ZEN detection. The sensor design utilizes β-cyclodextrin-functionalized graphene (CG) to effectively enhance electron transfer efficiency, combined with host–guest recognition between ferrocene (Fc) and β-cyclodextrin (β-CD), as well as Au-S covalent bonding. The 5′-SH and 3′-MB-modified dual-labeled ZEN aptamer (MB-Apt-SH) was immobilized via β-CD/Fc inclusion, with signal amplified by AuNPs binding to -SH. Without ZEN, the aptamer stays on the electrode, giving high IMB and low IFc. With ZEN, it binds the target, pulling it away. Adding Fc-COOH fills the β-CD cavities, increasing IFc and decreasing IMB, thus raising the IFc/IMB ratio proportionally to ZEN concentration. The sensor exhibits a wide linear range from 1 pg/mL to 1000 ng/mL, with a detection limit of 0.4344 pg/mL. Furthermore, the method was successfully applied to the determination of ZEN in wine samples, yielding recovery rates between 94.00% and 104.60%, demonstrating excellent accuracy and applicability. These results indicate that the MCH/AuNPs/SH-Apt-MB/CG/GCE platform is a highly sensitive and selective electrochemical sensor for ZEN detection.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Jialong Shi,Haijie Chen,Sijia Chen,Xiaolong Liu,Dapeng Feng,Zhiwen Zheng,Dan Qiao
The development of advanced lubrication technologies is essential for enhancing energy efficiency, reducing environmental impact, and improving mechanical durability. In this study, a high-performance lubrication system tailored for diamond-like carbon (DLC) coatings is designed, employing graphene oxide-functionalized cerium-based metal–organic framework (GO@Ce-MOF) composites as nano-additive in an aqueous polyethylene glycol (PEG) solution. The GO@Ce-MOF hybrids were synthesized via electrostatic self-assembly, demonstrating outstanding tribological characteristics with an exceptionally low coefficient of friction (COF ≈ 0.004) and minimal wear on DLC substrates. Post-friction analysis confirmed that the structural integrity of the DLC coating remained unimpaired, with wear predominantly localized on the opposing steel balls. A bilayer tribofilm, approximately 45.5 nm thick and composed of metal oxides and amorphous carbon, formed on the steel surface, facilitating a transition to carbon/carbon friction interfaces. The rod-like architecture of the cerium-based metal–organic framework (Ce-MOF), encapsulated by layered graphene oxide (GO), synergistically contributed to reduced rolling friction and provided carbonaceous precursors for in situ tribofilm formation. This solid–liquid lubrication synergy enabled superlubricity and near-zero wear. The findings demonstrate a novel strategy for promoting in situ growth of carbonaceous tribofilms on dual friction interfaces, offering transformative potential for sustainable lubrication of advanced coating materials.
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SENSORS AND ACTUATORS B-CHEMICAL
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2026
·
IF 8.3
Xia He,Yuankun Zheng,Yuting Zhang,Jia He,Mengting Li,Jinqi Li,Zhenping Liu,Huikai Shao
Nuclear matrix protein 22 (NMP22) is a well-recognized biomarker for bladder cancer; however, conventional detection methods often suffer from insufficient sensitivity, high-cost and time-consuming. In this work, a novel epitope molecularly imprinted polymer (EMIP)-based electrochemical biosensor was constructed for highly selective and sensitive determination of NMP22. The EMIP biosensor was fabricated by electro-polymerization with C-terminal dodecapeptide (GATPRAKGKAKH, named as epitope) of NMP22 as template and o -phenylenediamine ( o -PD) as functional monomer on the gold electrode (AuE) which was previously self-assembled with thiolated graphene (G-SH) and gold nanoparticles (AuNPs). The use of G-SH and AuNPs can supply synergistic effects for enhancing detection sensitivity and epitope imprinting of C-terminal dodecapeptide of NMP22 can provide high selectivity for NMP22 detection. To obtain the superior sensitivity, several experimental parameters affecting the performance of the EMIP electrochemical sensor were investigated, including the molar ratio of template to functional monomer, electropolymerization cycle, elution time and incubation time. Under the optimal experiment, this EMIP electrochemical biosensor exhibited a good linear relationship for NMP22 in the concentration range from 0.1 pg mL −1 to 1.0 μg mL −1 , with a limit of detection (LOD) of 0.077 pg mL −1 . Finally, the EMIP electrochemical biosensor was successfully used for the determination of NMP22 in human urine with the recovery rates ranging from 96.92 % to 100.88 %. Compared with conventional ELISA, the proposed EMIP biosensor displayed shorter detection time, improved reproducibility and comparable analytical reliability. These findings highlight that the developed EMIP biosensor holds strong potentials for early bladder cancer diagnosis and broader clinical applications.
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BIOMACROMOLECULES
·
2026
·
IF 5.4
Jiaqi Li,Xiao Yu,Hao Zhou,Xingchen Han,Dongdong Han,Yan Xu
Degree of circular polarization (DOCP) of reflected light is an intriguing optical phenomenon of chiral photonic materials; however, it remains underexploited. This is especially the case with cellulose nanocrystals (CNCs), despite the fact that their angle-dependent structural color has been overwhelmingly attended to. Herein, CNC-based chiral photonic materials capable of dual actuation are constructed by vacuum-assisted self-assembly. Leveraging femtosecond laser machining, complex structural color 3D shapes, and crawling robotic devices are produced from these materials. The incident angle-incident lasing wavelength-reflected light DOCP correlation and DOCP-based ternary code are established, based on which a secure and efficient robotic information transmission strategy is presented, where a message is simply synthesized from structural color photos using a single-use key and the encryption security increases with photo numbers by power law. Our work unleashes the hidden potential of CNC-based soft actuators and enables them for secure and efficient robotic data transmission.
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METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
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2026
·
IF 3.3
Chen Buxin,Li Yehui,Chen Mao,Liu Lingling,Ma Kaihui,Bai Chenguang,Hu Meilong
To support green transition of vanadium titanomagnetite blast furnace smelting, various low-carbon blast furnace atmospheres, including oxygen-enriched air injection (CO–N 2 ), oxygen-enriched H 2 -rich air injection (CO–H 2 ), and H 2 -rich air injection (CO–H 2 –N 2 ) were investigated to gain insight on the Ti(C,N) formation mechanisms. In this study, thermogravimetric analysis was first employed to investigate the kinetics of the TiO 2 reaction. Arrhenius-based kinetic modeling revealed that these reactions are primarily controlled by solid-state diffusion, and N 2 directly nitrides titanium oxides to TiN, and the activation energy decreases with increasing N 2 content. In contrast, H 2 lowers the activation energy of the reaction and promotes the reduction of TiO 2 to lower-valence oxides. Then, the carbothermic reduction of TiO 2 -bearing slags was investigated. Chemical composition analysis, XRD, and EPMA-WDS mapping demonstrated pronounced atmosphere-dependent variations in the formation of TiC/N phases. In CO–N 2 atmospheres, Ti(C,N) content decreases with increasing CO content and Ti(C,N) tends to agglomerate. With pure CO, only a few, sparsely dispersed TiC particles were detected. Whereas in CO–H 2 atmospheres, increasing the H 2 concentration markedly enhanced TiC formation, yielding uniformly dispersed particles with slight clustering. Therefore, the overall atmosphere effect on the amount of TiC/N formation follows the order: 100 pct CO < 80 pct CO–20 pct H 2 < 80 pct CO–20 pct N 2 < 60 pct CO–40 pct H 2 < 60 pct CO–40 pct N 2 < 30 pct CO–70 pct N 2 atmosphere (conventional blast furnace atmosphere). Graphical
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 2
·121698
·
IF 7.5
Zhenqing Dai,Min Chang,Lei He,Yuping Lai,Rijian Mo,Liming Song,Ruikun Sun,Shiqi Jiang,Chengyong Li
Microplastics (MPs) are ubiquitously distributed and pose a potential threat to marine ecosystems and human health. Although the lipophilicity of MPs permits efficient separation and enrichment via oil extraction, residual oil adhering to the MPs can interfere with their identification. To resolve this issue, a new strategy that an aerogel-filter membrane composite integrates with Raman spectroscopy was developed for the rapid separation and accurate identification of MPs. The aerogel-filter membrane composites were fabricated by combining pomelo peel-graphene aerogel (PGA) with filter membranes: polyethersulfone (1 and 3 μm PES), polytetrafluoroethylene (0.22, 2, and 3 μm PTFE), polyvinylidene difluoride (1 and 3 μm PVDF), and stainless steel mesh (2 and 3 μm SSM). Using tributyl phosphate as the oil extractant, results show that PGA@2 μm PTFE demonstrates the highest MPs recovery efficiency, with average rates of 90.81 ± 2.83 % for single-type MPs and 90.57 ± 5.42 % for mixed MPs. These results confirm that PGA@2 μm PTFE is an ideal composite for the separation and detection of MPs. After 20 cycles, PGA@2 μm PTFE maintains a high MPs recovery rate of 89.76 ± 4.31 %, demonstrating its excellent reusability. The proposed method was also successfully deployed for analysis of MPs in seawater, marine sediment, and beach sand. Moreover, this work provides a novel method for precisely assessing MPs in the marine environment.
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TRIBOLOGY INTERNATIONAL
·
2026
·
IF 7.6
Xianlin Zeng,Yingying Nie,Pengyu Wei,Xiaozhu Liao,Chuanxi Cao,Jiazhen Zhang,Xin Wang,Yinfu Che,Zengjie Fan,Dengqi He
Inspired by the natural lubrication mechanism of articular cartilage, this study presents a novel self-lubricating bionic cartilage scaffold fabricated through an advanced extrusion-based 3D printing technique that integrates a frozen platform and dot-matrix printing. The primary innovation lies in the rational structural design of a biomimetic porous scaffold capable of mimicking both boundary and fluid film lubrication, enabling autonomous lubricant release under radial compression. A biphasic “lubrication–storage–release” system was constructed by incorporating graphene oxide (GO) and a hyaluronic acid/Pluronic F127 (H/F) lubricant. GO enhanced the hydrogel’s mechanical strength, with the G1P group (GO/Polyvinyl Alcohol (PVA) composite, 1 mg/mL GO) achieving a tensile strength of 3.02 ± 0.27 MPa and a compressive modulus comparable to natural cartilage (≈1.8 MPa). The H/F component significantly improved tribological properties, reducing the friction coefficient of GO/PVA composite, 1 mg/mL GO-hyaluronic acid/Pluronic F127 (G1P-H/F) to 0.053 ± 0.004. In vivo evaluation using a rabbit cartilage defect model demonstrated excellent repair efficacy, with the GO-H/F group showing a 64.8 % reduction in osteophyte volume and maintaining bone microstructure parameters (Bone Volume/Total Volume Trabecular Separation (BV/TV， Tb.Sp)) similar to those of the sham group. These findings confirm the crucial role of the bionic glandular cavity architecture in achieving sustained lubrication and promoting cartilage regeneration, offering a promising strategy for the precision fabrication of functional artificial cartilage.
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Lubricants
·
2026
·Vol. 14
·期 3
·114
·
IF 3.6
Hanzhi Yao,Yuting Zhao,Bo Gao,Ruizhe Li,Tianxu Gao,Xiang Liu,Xianhao Gu,Zhongnan Wang,Qiuying Chang
Molybdenum disulfide (MoS2)-based composite systems are widely used as solid lubricating coatings. However, further optimization towards lower friction and higher wear resistance remains necessary to meet the extreme operating conditions and high reliability requirements of next-generation aerospace equipment. This study investigated the tribological performance of MoS2/epoxy composite coatings by comparing the effects of individual and combined additions of nano nickel (Ni) and magnesium silicate hydroxide (MSH). The coating preparation process adopted in this study is the bonding method. Experimental results showed that, under a load of 2 N and a rotational speed of 500 r/min, the coating containing 0.3 g Ni and 0.1 g MSH (labeled W03Ni01MSH) achieved a 22% reduction in wear scar width compared to the coating with only Ni, demonstrating a distinct synergistic effect. This is attributed to the complementary roles of the two additives: Ni promotes the formation of flaky wear debris, facilitating rapid formation and stabilization of a transfer film, thereby reducing friction; MSH enhances the load carrying capacity of the coating and suppresses wear propagation, thereby improving wear resistance. Furthermore, this composite coating exhibited optimal performance under the conditions of 500 r/min and 2 N. The results of this study significantly improved the friction-reducing and wear-resistant properties of the MoS2/epoxy composite coating. This provides a new strategy for the formulation design of high-performance solid lubricating coatings.
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iScience
·
2026
·
IF 4.5
Na Wang,Huirui Zhu,Dongkun Li,Xuena Wang,Ziyan Zhang,Bao Chai,Meining Li,Tao Gong
Hard-healing or non-healing diabetic wounds feature complex pathogenesis, posing significant challenges to clinical treatment. Platelet-rich plasma (PRP) is rich in various growth factors and possesses significant therapeutic potential, while its clinical application is largely limited by the rapid release of these bioactive factors. In this study, a multifunctional hydrogel dressing (GACP@PRP) based on PRP was fabricated for the promotion of type 2 diabetes wound healing via the physical cross-linking of graphene oxide-silver nanoparticles (GO-Ag NPs),chitosan (CS), and poly(N-isopropylacrylamide) (PNIPAM). The wound dressing possesses injectability, self-healing, favorable porosity, water absorption, moisture retention, adhesiveness, antibacterial and hemostatic functionalities. Moreover, the GACP@PRP hydrogel protects PRP to sustain growth factors release, promote cell proliferation and migration, which significantly accelerated wound healing rate in SD rats full-thickness skin defect model. Together with its great biocompatibility and biosafety, GACP@PRP meets the multiple functional requirements of diabetic wound dressing and is promising for clinical diabetic wounds management.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Chang Niu,Gongao Jiao,Lanjuan Zhou,Dongzhi Zhang
Carbon capture utilization and storage for reducing anthropogenic CO 2 emissions involve capturing CO 2 from industrial sources and injecting it into geological sinks such as oil reservoirs and depleted gas fields. To ensure environmental and public safety during carbon sequestration implementation, efficient CO 2 monitoring technologies must be developed to detect potential leaks at sequestration sites. Traditional CO 2 sensors used for monitoring these sites typically feature high costs and require specialized personnel for maintenance. This paper innovatively employs an immersion method to construct a surface acoustic wave (SAW) CO 2 sensor based on a polyethyleneimine-coated magnesium metal-organic framework (PEI@Mg-MOF-74) nanocomposite film. The PEI@Mg-MOF-74 SAW sensor exhibits ultra-high sensitivity across a CO 2 concentration range of 500–6000 ppm, with rapid response and recovery times of 11 s/6 s. Additionally, the sensor demonstrates excellent repeatability, selectivity, and long-term stability. Simultaneously, a graphene oxide/ Carboxymethyl Cellulose surface acoustic wave (SAW) humidity sensor was developed to address humidity-related issues. It exhibits ultra-high sensitivity of 14.29 kHz/% RH across a relative humidity range of 11–97% RH, coupled with rapid response and recovery times of 4 s/5 s. The SAW-based CO 2 sensor incorporates humidity compensation through the CSA-AdamW-CapsNet algorithm, and a wireless testing system based on the microcontroller was developed to enable wireless CO 2 and relative humidity measurement. This research provides theoretical foundations and technical prototypes for developing next-generation passive wireless smart sensing systems, holding significant application value in fields such as carbon dioxide capture and sequestration.
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危险品化学品经营许可证（带存储）