ACS Catalysis
·
2026
·Vol. 16
·期 16
·16105-16114
·
IF 13.6
Li Tan,Meng Yang,Sun Bingyan,Shi Xiaopeng,Su Jing,Wang Keran,Wang Kaige
Elucidating the role of hydrogen spillover in regulating the active sites of metal-acid catalysts is essential to enable selective lignin hydrodeoxygenation toward aviation biofuels. Herein, we developed a MoO 3 /Co@CoO catalyst that enables efficient hydrodeoxygenation of lignin and its derivatives into aviation biofuels. The catalyst achieved nearly complete conversion of monomeric phenolic derivatives with ∼99% selectivity toward aviation-range hydrocarbons, while lignin afforded 16.3 wt % liquid hydrocarbons with 53.2% selectivity to aviation-range hydrocarbons under mild conditions. Structural analyses confirmed the formation of a Co@CoO core−shell architecture and Co−O−Mo interfacial bonding. Combined experimental and DFT studies revealed that Co 0 sites facilitate H 2 dissociation, whereas the Co−O−Mo interface enables accelerated hydrogen spillover from Co to Mo species, generating Brønsted acid sites (Mo−OH) and driving the selective formation of aviation biofuel components. This work offers fundamental insights into rationally controlling hydrogen spillover via interface engineering in metal-acid catalysts for lignin hydrodeoxygenation.
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IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
·
2026
·
IF 7
Kun-Yang He,Liang-Liang Cheng,Wan-Lu Zheng,Ya-Nan Zhang
A Fiber-optic surface plasmon resonance (SPR) bilirubin biosensor based on gold nanoparticles (AuNPs) and bilirubin oxidase (BOD) was proposed in this work. Leveraging the refractive index (RI) sensitivity of SPR and the specific binding capability of BOD to bilirubin, this sensor enables specific detection of bilirubin. To improve the sensitivity of bilirubin detection, AuNPs were introduced to amplify the evanescent field for optical signal enhancement while providing a high surface area for increased BOD immobilization sites. Experimental results demonstrated that the sensor achieved a sensitivity of 54.6 nm/mM within the 0–0.14 mM concentration range and a detection limit of $11.5~\mu $ M. This sensor exhibits the advantages of low sample consumption, compact size, rapid response, good stability, and high specificity. Additionally, the accurate detection of bilirubin in real serum samples demonstrates its great application potential for clinical diagnosis.
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JOURNAL OF LUMINESCENCE
·
2026
·
IF 3.8
Yuhang Zhao,Lin Lin,Xin Chen,Xinyu Guo,Chenglin Gong,Yingzhen Wu,Zhuohong Feng,Zhezhe Wang,Zheng Li,Zhiqiang Zheng
Zero-dimensional rare-earth halide Cs 3 EuCl 6 : Tb 3+ , Sb 3+ nanocrystals (NCs) were successfully synthesized via a facile heating method. Their optical temperature sensing properties are systematically investigated. By virtue of the efficient energy transfer of Tb 3+ →Eu 3+ and the reduction in site symmetry of luminescent centers at high temperature, the emission peaks of Tb 3+ and Eu 3+ show different temperature response. Based on this, an optical thermometry system based on the fluorescence intensity ratio (FIR) is constructed. The maximum relative sensitivity of Cs 3 EuCl 6 : 40%Tb 3+ NCs reaches 1.301%·K −1 . Further introduction of Sb 3+ co-doping not only remarkably enhances the luminescence intensity of the material, but also raises the maximum relative sensitivity to 1.32%·K −1 . This work confirms that Cs 3 EuCl 6 : Tb 3+ , Sb 3+ NCs are high-performance optical temperature sensing materials with promising application prospects.
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JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 16
·118645
·
IF 6.3
Yuzhe Xie,Jie Zhang,Yuting Liu,Xing Luo,Zixiang Pei,Baohua Cao,Konrad Świerczek,Yang Zhang,Wanbing Guan
To mitigate interconnect corrosion in seawater-fed solid oxide electrolysis cells (SOECs), Mn 1.5 Co 1.5 O 4 spinel coatings were deposited on Fe-22Cr stainless steel. At 750 °C, the coated interconnects exhibited an area-specific resistance (ASR) of 31.8 mΩ cm 2 after 4835 h of oxidation in air, with a parabolic rate constant of 3.0 × 10 −5 mg 2 cm −4 h −1 . Following exposure to seawater vapor for 500 h, the ASR reached 3.36 mΩ cm 2 , with a predicted value of 9.80 mΩ cm 2 at 5000 h. These findings underscore the coating’s improved oxidation resistance under dual-atmosphere conditions. Furthermore, a three-cells stack demonstrated high stability with a low degradation rate of 1.04 × 10 −5 h −1 at 100 mA cm −2 for 100 h. Post-test analysis confirmed a crack-free structure with negligible additional resistance, indicating that the spinel coating satisfies the engineering requirements for durable, direct seawater electrolysis and provides a scalable pathway for green hydrogen production.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Han Liu,Ying-Xue Shi,Jia-Jia Wen,Bin Sun,Yun-Chao Yin,Qi Xue,Xuan Ai,Xin Wang,Yu Chen
An ultrathin two-dimensional twin-boundary-rich PtPd metallene (TB-PtPdene) was successfully synthesized by salt templating. • Pt-Pd alloying and twin interfaces optimize the adsorption energetics of intermediate products. • TB-PtPdene reaches 1.99 A mg PGM −1 for methanol electrooxidation and maintains stability for 800 h. • In situ FTIR and DFT reveal suppressed CO poisoning on TB-PtPdene. • TB-PtPdene enables direct methanol fuel cells with 14.2 mW cm −2 peak power density. Direct methanol fuel cells (DMFCs) are regarded as a highly promising clean-energy technology. Herein, an ultrathin two-dimensional twin-boundary-rich PtPd metallene (TB-PtPdene) is successfully synthesized using a salt-templating method. Structural analyses confirm a homogeneous metallic alloy configuration with reduced coordination environments and optimized electronic structure induced by twin interfaces. Electrochemical evaluations show that TB-PtPdene delivers a mass activity of 1.99 A mg PGM −1 , outperforming commercial Pt black, Pd black, and TB-Ptene for methanol oxidation reaction (MOR). Mechanistic studies reveal suppressed accumulation of poisoning CO intermediates and altered behavior of oxygenated intermediates on TB-PtPdene. Density functional theory calculations further reveal that the twin-boundary-rich PtPd structure modulates the adsorption energetics of MOR intermediates and reduces the uphill free-energy change of the *CHO-to-*HCOO step. TB-PtPdene also maintains substantial catalytic activity during prolonged electrochemical operation, with its structural integrity well preserved after stability testing. When TB-PtPdene is implemented in DMFCs, the assembled device achieves a peak power density of 14.2 mW cm −2 , significantly exceeding that of Pt black-based devices. This work offers an innovative strategy for designing MOR electrocatalysts with both high activity and stability, and deepens the mechanistic understanding of the role of twin defects in catalytic processes. Download: Download high-res image (258KB) Download: Download full-size image
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 36
·17135-17146
·
IF 5.8
Hussain Mansor,Hao Lu,Tabassum Khadija,Nasrullah Abdur Rehman,Fu Yuan,Ma Xinyi,Wei Yajuan,Liu Jia
Urea oxidation reaction (UOR) represents a promising
route for
sustainable hydrogen generation and wastewater purification, serving
as an energy-saving alternative to the oxygen evolution reaction.
Here, we develop a Co-doped AgP 2 /CoP nanoelectrocatalyst
(denoted as CoAgP 2 /CoP), which forms a hierarchical nanostructure.
The nanoelectrocatalyst demonstrates excellent UOR performance, requiring
a low onset potential of 1.23 V vs RHE to deliver 10 mA cm –2 , exhibiting a small Tafel slope of 23.36 mV dec –1 , and maintaining remarkable stability for over 240 h in alkaline
urea electrolyte. Experimental characterization confirms that Co species
are oxidized into catalytically active Co 3+ species, while
phosphorus is transformed into oxidized P–O species that stabilize
the active interface, and Ag facilitates electron transfer. Mechanistic
investigations reveal that, within the composite hierarchical framework,
urea undergoes sequential N–H and C–N bond cleavage
at the P-assisted Co 3+ active sites. The addition of Ag
further reduces the energy barrier for generating high-valence active
species. The hierarchical nanoarchitecture enlarges the electrochemically
active surface area and enhances mass transport. This work highlights
the synergistic effects arising from the multielement composition
and hierarchical nanostructure in promoting urea electrooxidation,
providing a feasible strategy toward energy-efficient hydrogen production
and environmental remediation.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 3
·122907
·
IF 7.5
Xiaoyu Ma,Tao Liu,Jiaheng Huang,Jiaqi Zhang,Chengyong Yu,Tianyong Huang
Photocatalytic CO₂ reduction is a promising route for valorizing carbon resources. In liquid-phase systems, TiO 2 suffers from limited CO₂ adsorption, high interfacial charge-transfer resistance, and rapid carrier recombination. These drawbacks hinder simultaneous improvements in efficiency and selectivity. We fabricated a TiO 2 /UiO-66/Cu ternary photocatalyst using a modified-then-loaded strategy. Amino-functionalized TiO 2 was chemically anchored to UiO-66 via N–Zr coordination, forming a robust, low-resistance TiO 2 /MOF interface while preserving the CO₂-enrichment pores of UiO-66. Cu nanoparticles were then introduced as electron traps and catalytic sites to extract photogenerated electrons from the recombination-prone Type-I heterojunction, enabling directional electron utilization. In a solid–liquid system using water as the proton source, the optimal TiO 2 /UiO-66/Cu produced 86.76 μmol·g⁻¹ CO and 9.08 μmol·g⁻¹ CH 4 after 4 h of UV–visible irradiation. The CO production rate was 7.4- and 3.8-fold higher than that of pristine TiO 2 and UiO-66, respectively. Characterization shows that N–Zr coordination reduces charge-transfer resistance, UiO-66 enriches CO₂, and Cu promotes electron capture. Together, these effects mitigate the intrinsically poor charge separation of Type-I heterojunctions and enable efficient CO 2 photoreduction. The results provide design and mechanistic insights for MOF-enabled TiO 2 composite photocatalysts.
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PLoS One
·
2026
·Vol. 21
·期 4
·e0347425
·
IF 2.8
Lingyan Chen,Miaomiao Zhu,Xinliang Liu,Qiong Wei
This study aimed to develop a hydrogel-based co-culture system for pancreatic α- and β-cells to mimic native islet composition and achieve bidirectional blood glucose regulation. Monodisperse sodium alginate microsphere encapsulating α-TC6 and β-TC6 cells in a 2:8 ratio were fabricated using a microfluidic electrostatic spray platform. Key processing parameters (voltage, collection distance, flow rate, and alginate concentration) were optimized to precisely control microsphere diameter, yielding highly uniform spheres with excellent monodispersity. The alginate hydrogel exhibited favorable swelling properties and viscoelasticity, providing a supportive 3D microenvironment. In vitro, the microspheres demonstrated high biocompatibility, with cell viability exceeding 95% after 72 hours of co-culture. Encapsulation did not impair cellular function, as evidenced by unhindered insulin and glucagon secretion compared to unencapsulated controls, in streptozotocin-induced diabetic C57BL/6 mice, transplantation of these cell-laden microspheres into the subcutaneous brown fat significantly improved glucose homeostasis. Treated mice showed markedly better glucose tolerance during intraperitoneal glucose tolerance tests and maintained lower fasting blood glucose levels compared to sham-operated and unencapsulated cell transplantation groups. Furthermore, the treatment alleviated diabetes-associated weight loss, with the microsphere group showing a significant weight increase post-transplantation. Histological analysis confirmed the biocompatibility of the implants, with no significant pathological changes in major organs. In conclusion, this sodium alginate microsphere system effectively co-cultures functional islet cells, provides immunoisolation, and restores bidirectional glucose regulation in a diabetic mouse model, offering a promising strategy for pancreatic islet modeling and cell- based diabetes therapy.
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PubMed
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JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2026
·Vol. 109
·期 4
·e70713
·
IF 4.2
Shucheng Liu,Shangchao Chi,Kui Chen,Feng Si,Moke Zhou,Bin Tang
A series of fine-grained Dy/Y co-doped BaTiO 3 -based ceramics were prepared by sintering in a reducing atmosphere to evaluate their potential as dielectric materials for base–metal–electrode multilayer ceramic capacitors (BME-MLCCs). X-ray diffraction, scanning electron microscope, transmission electron microscope, and energy-dispersive spectrometer analyses confirmed the formation of a core–shell structure with grain sizes of ∼200 nm, as well as localized interfacial stress at grain boundaries. Among all compositions, the Y5 sample (moderate Y doping, 1.5 mol%) exhibited a high dielectric constant of 2968, maintained excellent temperature stability within the EIA X7P specification (temperature coefficient of capacitance, TCC ≤ ±10%, temperature range from –55°C to 125°C), and suppressed abnormal grain growth. Reliability tests showed that this composition exhibited the longest lifetime and the highest breakdown field. Impedance spectroscopy and COMSOL simulations further substantiated the role of Y 3 + in suppressing vacancy migration and dispersing local electric fields. This study provides a theoretical reference for miniaturized, high-reliability BME-MLCCs.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2026
·
IF 3.1
Shikai Zhou,Xiaolong Wang,Yi Liu,Liuchun Zheng
The accumulation of plastic waste in marine environments poses a significant ecological threat, highlighting the urgent need for intrinsically hydro-degradable polymers. Poly(butylene oxalate) (PBO) hydrolyzes rapidly but its degradation rate is too fast for practical applications. To address this challenge, rigid cyclohexanedimethanol (CHDM) units were introduced into the PBO backbone to synthesize a series of poly(butylene cyclohexanedimethylene oxalate) (PBCO) copolyesters with CHDM content ranging from 19.3 to 75.3 mol%. Their chemical structure, crystallization behavior, thermal and mechanical properties, rheology, and degradation profile were systematically investigated. Results indicated that CHDM incorporation significantly affects properties: crystallinity, melting point, and mechanical strength exhibit a V-shaped trend with increasing CHDM content, whereas thermal stability, glass transition temperature, and melt viscosity increase monotonically. Notably, the seawater degradation rate displays a unique non-monotonic trend, initially accelerating and then substantially slowing as CHDM content increases. The decomposition temperature decreased by 58.8°C, elongation at break increased by 64%, and degradation rate reduced, collectively extending the material's applicable window. This work demonstrates a viable strategy for finely tuning the degradation profile, thermal and mechanical properties of aliphatic polyesters via rigid-unit copolymerization, offering a promising material solution that balances service life and hydrolytic degradability for specific applications.
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INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Ran Wei,Xu Zhao,Liping Li,Guangshe Li
A series of Ni and Co codoped manganese dioxide catalysts with varying Ni/Co ratios were prepared via a two-step hydrothermal-assisted calcination process, in which Birnessite-type δ-MnO2 precursors were first synthesized hydrothermally and then calcined at different temperatures. The optimally performing Ca-NCMO11–500 (Ni/Co = 1:1, calcined at 500 °C) was identified. Systematic investigations revealed that bimetallic doping modulates the local structure and electronic states of the manganese oxide framework. The Ca-NCMO11–500 catalyst exploits Ni–Co synergistic effects to activate lattice oxygen and promote O–O coupling, resulting in superior oxygen evolution reaction activity. Electrochemical measurements demonstrate that Ca-NCMO11–500 achieves 50 mA cm–2 at an overpotential of 237 mV and maintains excellent durability with negligible activity loss over 300 h at 400 mA cm–2. This study elucidates the microscopic mechanism by which Ni and Co codoping strengthens metal–oxygen bonds and enhances lattice oxygen reactivity, providing a rational basis for the design of high-performance manganese-based electrocatalysts.
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PubMed
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Yimin Jiang,Jixiang Wu,Xichang Liu,Xiangpei Yuan,Chunhui Lu,Yansong Zhou
Electrochemical reduction of carbon monoxide to acetate and ethanol represents a promising strategy for sustainable chemical synthesis. Nevertheless, achieving precise control over product selectivity remains a critical challenge as these compounds originate from complex and closely coupled reaction pathways. In this study, a generalized potential-dependent switch in the dominant pathway for carbon monoxide to C 2 oxygenates on Cu-based electrodes is revealed. At applied potentials above −0.6 V versus the reversible hydrogen electrode, acetate and ethanol are primarily generated via electrode-mediated acetaldehyde disproportionation reaction; at more negative applied potentials, acetate production proceeds predominantly via a ketene-mediated route. Theoretical simulations corroborate the potential-dependent pathway divergence at key intermediates, offering a clear rationale for the observed selectivity trends. These findings establish a comprehensive and unified framework for understanding and guiding product distribution in carbon oxide electroreduction processes. Potential-driven bifurcation controls C 2 oxygenate selectivity in CO electroreduction on copper: low overpotentials favor acetaldehyde disproportionation, while higher potentials promote acetate formation via a ketene intermediate. Download: Download high-res image (171KB) Download: Download full-size image
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