BIOMATERIALS
·
2026
·
IF 13.6
Aguo Cheng,Yixin Yu,Jing Ding,Shuhao Sun,Peng Li,Rong Sun,Kelong Fan
Acute radiation proctitis (ARP) is a common complication of pelvic radiotherapy driven by direct DNA damage and excessive reactive oxygen species (ROS) induced oxidative stress. Currently, effective clinical treatments that can systematically intervene in ARP are lacking. In this study, we developed an injectable, multicenter cascade nanozyme gel (Ce–MnCo LDH gel) for intrarectal administration to combat radiation-induced intestinal injury. By atomically integrating cerium (Ce) into the lattice of manganese-cobalt layered double hydroxides (MnCo LDH), we constructed a complex multicenter electron transfer network, endowing the nanozyme with potent, broad-spectrum catalase-, superoxide dismutase-, and glutathione peroxidase-like activities that effectively neutralize various ROS. Ce–MnCo LDH gel exhibited good stability and local retention capacity, effectively alleviated radiation-induced oxidative damage, reduced DNA damage, protected mitochondrial function, and inhibited NF-κB-mediated inflammatory signaling. In the ARP rat model, intrarectal administration of Ce–MnCo LDH gel effectively alleviated radiation-induced injury. This platform restored the expression of tight junction proteins (ZO-1 and Claudin-3) in epithelial cells, repaired the integrity of the intestinal epithelial barrier, and remodeled the immune microenvironment in damaged areas by regulating inflammatory factors. In summary, this study provides a promising therapeutic strategy for radiation-induced intestinal injury and other oxidative inflammatory diseases.
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高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xinyu Liu,Yimeng Wang,Jinqi Wu,Donggang Li,Mingyu Yao,Jindou Huang,Bowen Ren
Ce-doped Co 3 O 4 nanowire arrays with interfacial RuO 2 were constructed on Ti mesh. • The optimized 5-Ru-CoCe/Ti shows 198 ± 15 mV at 10 mA cm −2 for acidic OER. • The self-supported electrode delivers stable operation for over 200 h in 0.5 M H 2 SO 4 . • Ce doping and RuO 2 coupling tune the electronic structure and accelerate OER kinetics. Co-based catalysts have emerged as highly promising electrocatalysts for the acidic oxygen evolution reaction (OER). However, their elevated surface energies lead to instability and inefficacy, particularly at high current densities, impeding their utility in large-scale application. Herein, we report a self-supported electrode composed of interfacial RuO 2 -decorated Ce-doped Co 3 O 4 nanowire arrays on Ti mesh, fabricated through hydrothermal growth, annealing, and cyclic impregnation-calcination. The optimized 5-Ru-CoCe/Ti catalyst delivers an overpotential of only 198 ± 15 mV at 10 mA cm −2 , a Tafel slope of 103.2 mV dec −1 , and stable operation for over 200 h in 0.5 M H 2 SO 4 . Experimental characterizations and density functional theory calculations reveal that Ce doping and RuO 2 /Co 3 O 4 interfacial coupling modulate the local electronic structure and promote interfacial electron redistribution. This electronic modulation enhances –OH adsorption and accelerates OER kinetics, thus lowering the energy barrier for the *O to *OOH conversion. These findings demonstrate that interfacial electronic structure engineering is an effective strategy for designing low-noble-metal electrocatalysts with high activity and durability for acidic water oxidation. Download: Download high-res image (123KB) Download: Download full-size image
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高影响因子
JOURNAL OF LUMINESCENCE
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2026
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IF 3.8
Jiawen Li,Xu Wang,Chaoyong Deng,Min Zhang,Liang Yang
This paper reveals a two-step reduction method for obtaining NaSr 4 (BO 3 ) 3 (NSBO):Ce series phosphors with better performance. XPS analysis confirms that the two-step reduction method achieves a higher proportion of trivalent Ce ions (in Ce 3 + /Ce 4 + ) with 54.38%, resulting in better photoluminescence and thermoluminescence properties compared to the one-step reduction method (41.21% and 28.11%). The sample exhibits better thermal stability, with a thermal quenching activation energy of 0.19595 eV. Ce 3 + doping creates deeper traps, thus enhancing photoluminescence intensity and generating more and deeper traps, which may be attributed to oxygen vacancies ( V O ) and strontium vacancies ( V Sr ). The NSBO: 0.07Ce 3 + sample exhibits better thermal stability 52% at 473K, with a thermal quenching activation energy of 0.19595 eV. The sample displays a lower correlated color temperature ( CCT ) of 1778 K and a higher color purity ( CP ) of 98.64%. The concentration quenching ( CQ ) mechanism is dipole-quadrupole (
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高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Fujun Zhu,Junming Zhang,Zhiyong Zhang,Xianglong Kong,Yilin Li,Xudong Zhao,Ying Zhao,Dan Yang,Qiqi Sun,Fei He,Zhiliang Liu
Here, we fabricate a Ce-doped small-sized Pt nanocluster supported on a double-layered carbon sphere (DCS) via a vapor-filling strategy for efficient borohydride oxidation reaction (BOR). The incorporation of Ce enhances OH– adsorption and accelerates the dissociation of B–H bonds on Pt, thereby boosting the intrinsic BOR activity. In parallel, the unique dual-shell carbon sphere support enables catalyst loading on both the inner and outer layers, maintaining catalytic stability while confining hydrogen escape to suppress the competing hydrogen evolution reaction effectively. As a result, a direct borohydride fuel cell (DBFC) equipped with a Ce–Pt/DCS anode achieves a high peak power density of 493 mW cm–2 and an open-circuit voltage of 1.77 V. This work offers a valuable insight into the rational design of high-performance anode catalysts for next-generation DBFC.
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高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2026
·Vol. 49
·期 7
·e70479
·
IF 3.6
Qinghua Cao,Shuai Lv,Yue Wang,Xijie Wang,Hailin Cong,Bing Yu
Zwitterionic compounds exhibit strong hydrophilicity, act as hydrogen bond receptors and donors, and form robust hydration layers through ionic solvation, which effectively prevent unwanted protein adsorption. To reduce nonspecific interactions between analytes and the inner surface of the separation compartment and then improve detection sensitivity and separation efficiency, it is essential to modify fused silica capillaries with functional groups. In this study, we synthesized a zwitterionic antifouling peptide (Glu-Lys) 3 Glu using solid-phase peptide synthesis. Then, we bound the peptide to the inner surface of a fused silica capillary using diazo resin as a coupling agent, resulting in stable and excellent antifouling and separation abilities. To evaluate the properties of the coating, we conducted fluorescent protein adsorption and electrophoresis experiments. The obtained results demonstrated that the coating effectively prevented protein adsorption and made it possible to separate five standard proteins in 20 min. Moreover, three proteins of egg white were separated within 15 min. These findings confirmed the very good anti-protein adsorption performance of the peptide-coated capillary and its practical value for various applications.
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高影响因子
Nanoenergy Advances
·
2026
·Vol. 6
·期 3
·20
·
IF 4.2
Qilan Shangguan,Huiying Qiu,Yanzhi Sun,Pingyu Wan,Yang Tang,Yongmei Chen
In this study, an electrochemical system for methane conversion was developed, employing Ni- and Ce-doped LaCoO3perovskite as the anode catalyst in an Na2CO3electrolyte. Structural characterization revealed that the La1−yCeyCo1−xNixO3(x = 0–0.5, y = 0–0.12) synthesized by the sol–gel method maintains the perovskite structure, but is rich in oxygen vacancies. Electrochemical studies revealed that the performance of methane activation is related to the presence of Ni(III) in the catalyst, and reactive oxygen species (•OH and HOO−) are provided through water oxidation reactions (WOR) in the Na2CO3electrolyte. The electrocatalytic performance of the synthesized La0.92Ce0.08Co0.5Ni0.5O3during methane conversion was verified in an electrolysis cell, and ethanol and acetic acid were identified as the methane conversion oxygenates. Under ambient conditions, the formation rate of ethanol reached 577.0 μmol gcat−1h−1at 0.90 V (vs. Ag/AgCl) in 0.5 mol L−1Na2CO3. The catalyst was found to retain structural integrity and sustain catalytic activity over multiple reaction cycles.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Fangfang Li,Jinjin Wang,Ying-Hua Zhou
Metal-organic frameworks (MOFs) possess highly tunable structures, making them promising heterogeneous catalysts for efficient CO 2 conversion reactions. In this work, cerium-modified zirconium-based metal-organic frameworks (ZrCe-UiO-66) were engineered and post-synthetically functionalized with dicationic ionic liquid moieties, enabling the simultaneous introduction of strong Lewis acidic sites and nucleophilic ionic liquid units without the need for external co-catalysts. The resulting ZrCe 0.5 -UiO-66-DIL(n-PyRIm) ( n = 2, 3, 4; R = Et, Pr, Bu, Pe) functionalized MOFs were prepared via a modular grafting approach and exhibited remarkable catalytic performance. Among them, ZrCe 0.5 -UiO-66-DIL(2-PyBuIm) converted epichlorohydrin into the corresponding cyclic carbonate with 96% yield and 98% selectivity under solvent-free conditions at 110 °C and a CO 2 pressure of 0.1 MPa. This outstanding activity arises from a cooperative activation mechanism, in which the mixed Zr 4+ /Ce 4+ activate the epoxide substrate through Lewis acid coordination with the epoxide oxygen, thereby facilitating C O bond activation, while the bromide anions embedded in the ionic liquid moieties promote nucleophilic ring opening. In addition to high catalytic efficiency, the MOF hybrids demonstrated excellent recyclability and broad substrate tolerance. Combined CO 2 adsorption measurements and in situ infrared spectroscopy further revealed key surface intermediates, enabling a plausible mechanistic pathway for the cycloaddition process to be proposed.
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高影响因子
Biomaterials Advances
·
2026
·
IF 6.7
Yuhang Zhang,Jingxu Wang,Weiming Yu,Yuting Zhang,Jiaxin Jiang,Yu Chen,Zhe Ji
BA@Ce-MOF exhibits SOD/CAT-like enzyme activities and antioxidant effects. • In situ formation of hydrogel via thiol-ene photo-click chemistry reaction. • The ROS-responsive oxidation of thioether bonds in the hydrogel network accelerates drug release. • Promotes osteogenesis, angiogenesis, and M2 macrophage polarization in vivo. The hyperglycemic and reactive oxygen species (ROS)-rich microenvironment in diabetes readily incites inflammation, and the persistent inflammation exacerbates bone resorption, severely hindering the repair of diabetic alveolar bone defects. The alendronate used in clinical practice can inhibit bone resorption but lacks osteoinductive activity and cannot modulate the inflammatory milieu; traditional Chinese medicine monomers possess anti-inflammatory potential but are limited by low bioavailability. Herein, we developed a multifunctional nanocomposite hydrogel via a hierarchical integration strategy using carbon dots and Ce-MOF nanozymes to promote diabetic alveolar bone repair. In this system, the Ce-MOF, exhibiting superoxide dismutase (SOD)-and catalase (CAT)-like activities, scavenges ROS and enables the sustained release of carbon dots composed of alendronate and baicalin, achieving synergistic antioxidant and antibacterial effects. The hydrogel, formed from vinyl-group-grafted chitosan and thiolated sodium alginate via rapid in situ photoclick chemistry, adapts to irregular defect shapes; the thioether bonds formed in its crosslinked structure enable ROS-triggered acceleration of BA@Ce-MOF nanoparticle release. In vitro, the BA@Ce@CSSA hydrogel demonstrated excellent biocompatibility. Its SOD/CAT activities and the antioxidant function of the monomer synergistically eliminated ROS and induced macrophage M2 polarization for immunomodulation. Concurrently, it enhanced osteogenic differentiation by upregulating RUNX2 and OPN expression. In vivo, Micro-CT and histomorphometric analyses confirmed that BA@Ce@CSSA significantly accelerated and improved the quality of bone regeneration. In summary, this study presents a hierarchically designed therapeutic strategy that effectively promotes bone regeneration by integrating antioxidant, anti-inflammatory, pro-angiogenic, and pro-osteogenic functions within a ROS-responsive hydrogel system, offering a promising approach for treating alveolar bone defects under diabetic conditions.
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PubMed
高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Yue Chen,Chen Liao,Yinhua Yao,Huan Liu,Weizhen Zhang,Yuping Qiu,Huihuang Fang,Chongqi Chen,Yu Luo,Lilong Jiang
Ammonia decomposition is an attractive route for carbon-free hydrogen production, yet Ni-based catalysts are limited by insufficient activity and severe sintering at high temperatures. Herein, Ni supported on Ce-induced perovskites were employed in ammonia decomposition. Notably, we found that site-specific Ce occupation in the support governs the defect chemistry, Ni stabilization, and catalytic performance by constructing LaAlO 3 –Ce-based supports with distinct Ce locations. When Ce is present as a separate CeO 2 phase, a LaAlO 3 -CeO 2 composite is formed, in which interfacial CeO 2 domains moderately improve Ni dispersion and suppress sintering via moderate anchoring. In contrast, A-site incorporation of Ce into the LaAlO 3 lattice induces pronounced lattice distortion and abundant oxygen vacancies, significantly enhancing support basicity and interfacial electron donation. These defect-rich environments stabilize electron-enriched Ni species, strengthen metal-support interactions, and facilitate the recombination and desorption of surface N species, thereby accelerating N* recombination during ammonia decomposition. Consequently, the Ni/LaCeAlO 3 achieves over 90% NH 3 conversion at 600 ℃ with a hydrogen production rate of 524 mmol‧g Ni −1 ‧min −1 , outperforming Ni/LaAlO 3 and Ni/LaAlO 3 -CeO 2 while maintaining excellent stability over 60 h. Kinetic analysis, together with NH 3 -TPSR and in situ DRIFTS, suggests a stepwise dehydrogenation pathway with facilitated H removal and accelerated N 2 formation, directly associated with Ce-induced oxygen vacancies and defect-mediated electronic modulation. This work demonstrates that A-site-specific Ce incorporation in perovskite oxides offers a decisive advantage over conventional composite supports, providing an effective strategy for defect engineering and the development of active and durable non-noble metal catalysts for ammonia-to-hydrogen conversion.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Xiaoping Jiang,Yifan Shen,Yiren Wu,Jinpeng Ding,Zhiyu Qu,Pengde Han,Lixi Wang,Qitu Zhang
Dual-mode anti-counterfeiting materials with photochromic and dynamic luminescent properties can improve the security of anti-counterfeiting and encryption. This study aimed to synthesize CaAl 12 O 19 :Eu, Ce phosphors with photochromic and dynamic photoluminescent properties. With the extension of 254-nm UV radiation time, the surface of the CaAl 12 O 19 :Eu, Ce phosphors changed in color from white to brownish yellow and was bleached by heating at 520 °C for 5 min, exhibiting excellent fatigue resistance and thermal stability. After co-doping Eu and Ce in CaAl 12 O 19 , the photochromic performance significantly improved, with the ΔR value increasing by 2.6- and 1.8-fold that of the CaAl 12 O 19 :1.0%Eu and CaAl 12 O 19 :1.0%Ce samples, respectively. After 254-nm UV irradiation, the CaAl 12 O 19 :Eu, Ce samples showed time-dependent dynamic luminescence characteristics, changing in color from orange-red to magenta. The mechanisms responsible for the photochromic and dynamic luminescence properties were further investigated. Overall, owing to their photochromism and dynamic photoluminescence, the CaAl 12 O 19 :Eu, Ce/polydimethylsiloxane composites could be applied in advanced anti-counterfeiting and information encryption with higher security in both the bright and dark fields.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 39
·29832-29850
·
IF 4.4
Yue Aobo,Meng Xianhe,Ruan Zikang,Ren Huixin,Sun Qiang,Hu Xiaoyu,Tang Anchun,Yu Nengjun,Kang Qiaoling,Yan Lijing
The PVDF-based polymer electrolyte has the disadvantages of low ionic conductivity and low Li + migration number at room temperature, which hinders its application in lithium-ion batteries. Herein, polymer composite electrolytes were constructed utilizing three polymorphic Ce-MOFs as functional fillers to enhance its performance. The homogeneously dispersed Ce-MOF fillers restricted the reorganization of PVDF-HFP chains, thereby led to the change in crystallization and aggregation state of the polymer. Moreover, their porous structure and active sites also promoted the Lewis acid–base interactions with the polymer and TFSI − , promoting ion dissociation. Temperature-induced phase variation produced distinct porous crystalline structures formed the tetragonal-phase MOF-76-Ce exhibiting excellent properties with a room-temperature ionic conductivity of 7.89×10⁻ 4 S cm⁻ 1 and a Li + transference number of 0.79. The full cell assembled with this electrolyte and high-energy-density polyanionic LiMn 0.6 Fe 0.4 PO 4 cathodes demonstrated good cycling stability. It could reach discharge capacity of 147 mAh g⁻ 1 at 0.2 C and a capacity retention of 91% after 200 cycles at 0.5 C under a high cutoff voltage of 4.5 V. This work offers an effective filler strategy for developing high-performance quasi-solid-state polymer electrolytes and highlights the crucial role of metal–organic framework topology in advancing safe and durable lithium metal batteries. Graphical abstract
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高影响因子
JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Biying Tian,Yaqin Chen,Jiawen Sun,Yi-Ru Hao,Chunhao Li,Jing Sun,Hui Xue,Qin Wang
The feasibility of enhancing the electrocatalytic performance of sulfides is demonstrated through element doping and vacancy engineering. However, the investigation on the reaction mechanisms of catalyst doping and defects related to oxygen evolution reaction (OER) still faces significant challenges. In this work, a Ce-doped NiS 2 supported on carbon cloth (Ce-NiS 2 @CC) with abundant sulfur vacancy defects was successfully developed through a sequential two-step hydrothermal and high-temperature vulcanization strategy. The results demonstrate that the obtained Ce-NiS 2 @CC catalyst exhibits excellent electrochemical performance for both OER and urea oxidation reaction (UOR). It requires only 1.40 and 1.28 V to achieve a current density of 10 mA/cm 2 for OER and UOR, respectively. Furthermore, the Tafel slopes observed for OER and UOR are noteworthy at 40.2 and 58.3 mV/dec, respectively, suggesting enhanced kinetics and superior catalytic performance. Additionally, the stability tests conducted on the catalyst reveal that the Ce-NiS 2 @CC possesses exceptional electrochemical long-term stability, making it a highly reliable and durable option for various applications. Density functional theory calculations and in situ Raman results demonstrate that Ce doping and sulfur vacancy synergistically promote surface reconstruction to form Ni Ⅲ –O species, modulate the local charge distribution near the Ni site, thereby facilitating the adsorption and activation of water molecules, and consequently accelerating the kinetics of OER. This study systematically investigated the impact of metal doping and vacancy defects on electrocatalytic performance, offering insights into electronic structure regulation and performance optimization for efficient electrocatalysts.
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