COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yun-Xi Jiang,Shu-Fei Yin,You-Lin Zhang,Pan Liu,Hao Li,Lian-Kui Wu,Fa-He Cao
Conventional epoxy coatings rely primarily on passive barrier effects and therefore lack the ability to regulate interfacial corrosion processes after local damage. Here, a physicochemically regulated active/passive epoxy coating is developed by incorporating a phytic acid–loaded cerium-based metal–organic framework (CeMOF-P) as a functional colloidal additive. Owing to the confinement and coordination effects of the CeMOF framework, phytic acid is stably immobilized and uniformly dispersed, resulting in improved coating compactness and interfacial adhesion. Electrochemical impedance spectroscopy shows that the CeMOF-P–modified coating exhibits markedly enhanced corrosion resistance and, more importantly, a characteristic non-monotonic impedance evolution with pronounced impedance recovery upon damage, indicating an interfacial regulation mechanism beyond passive shielding. Mechanistic analyses reveal that corrosion-triggered, coordinated release of Ce 3+ /Ce 4+ species and phytic acid leads to the in situ formation of a compact cerium–phosphate–rich interfacial film, which simultaneously suppresses anodic dissolution and cathodic reactions. These results demonstrate that Ce–P synergy enables continuous interfacial regulation rather than transient passivation, providing mechanistic insight into the role of coordination chemistry and colloidal confinement in governing interfacial electrochemical behavior and stability in protective coating systems.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.6
Ruibin Xiong,Xiaohua Cao,Xingfu Li,Miao Lin,Dedong He,Yubing Li,Jichang Lu,Yongming Luo
Low-temperature CO 2 methanation efficiently enables efficient conversion of CO 2 into methane under mild conditions, presenting substantial potential for enhanced energy efficiency and economic feasibility. However, achieving highly efficient low-temperature CO 2 activation remains a critical challenge due to inherent kinetic constraints. In this study, the inverse-supported Ce/Ni catalyst (11 mol% Ce/Ni) was synthesized, which achieved 82% CO 2 conversion and nearly 100% CH 4 selectivity under photothermal synergy at 220 °C (300 W xenon lamp, 300–2500 nm, 1.5 W·cm −2 ), outperforming most conventional nickel-based catalysts. Moreover, the catalyst exhibited outstanding long-term stability, with only an 8% activity loss after 100 h of continuous operation. This superior performance was attributed to its CeO 2 -Ni interfacial configurations and abundant oxygen vacancies. In situ diffuse reflectance infrared Fourier transform spectroscopy analysis revealed that the CO₂ methanation over this catalyst proceeds via a dual-intermediate pathway involving CO* and HCOO*, with photothermal synergy significantly accelerating the intermediate conversion without altering the intrinsic reaction pathway. This study establishes an innovative strategy for designing low-temperature and high-performance CO 2 methanation catalysts via the integration of an inverse Ce/Ni configuration with photothermal synergy.
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PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
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IF 4.175
Zhaoyubo Zeng,Yunzhong Liu,Yingxiang Zhang,Zhiguang Zhou,Xiaohui Liu
While ensuring good resistance to hydrothermal or high-temperature aging of zirconia ceramics, constant attempts to understand and improve their fracture toughness remain the focus. In this work, 0.1–0.3 mol.% of La 2 O 3 was doped into a 1.5 mol.% Y 2 O 3 +5.5 mol.% CeO 2 co-stabilized zirconia ceramic (C1.5Y5.5Ce) based on a coating route. Compared with conventional 3 mol.% Y 2 O 3 stabilized zirconia (C3Y), their microstructure, mechanical properties, and corresponding toughening mechanisms were studied by XRD , SEM, Raman spectroscopy , XPS and TEM . Non-transformable t’ zirconia phase was found in both Ce–Y and Ce–Y–La co-stabilized ceramics. Tetragonal to monoclinic (t-m) phase transformation toughening combined with ferroelastic domain toughening is considered to be the primary toughening mechanism of these ceramics. Doping of La 2 O 3 causes significant grain refinement, which increases the hardness and facilitates the ferroelastic domain switching. The oxygen vacancy concentration and the valence state of cerium are also affected, resulting in a change in the tetragonal stability. Although with a lower t-m transformation rate, the 0.3 mol.% La 2 O 3 doped C1.5Y5.5Ce possessing the smallest grain size shows a high fracture toughness of 10.17 MPa m 1/2 , which is about 23% higher than that of C3Y.
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NEW JOURNAL OF CHEMISTRY
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2026
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IF 2.5
Yang Zhang,Yunhua Zhang,Hao Xie
Photocatalytic hydrogen production utilizes solar energy, particularly the visible light portion, to decompose water into hydrogen, offering a clean and sustainable solution to the global energy crisis. Developing efficient and stable visible-light-driven photocatalysts is essential to improve hydrogen evolution efficiency. In this work, Ce-doped ZnCdS photocatalysts were synthesized via a hydrothermal method to enhance charge separation and photocatalytic performance under visible light irradiation. The 5% Ce-doped sample exhibited a hydrogen evolution rate 1.74 times higher than that of pure ZnCdS after 3 hours of irradiation. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses reveal that Ce doping promotes the preferential exposure of highly active (101) facets and induces moderate grain growth, which reduces grain boundary defects and increases the number of active sites for H₂ generation. X-ray photoelectron spectroscopy (XPS) and electron paramagnetic resonance (EPR) analyses confirm that the Ce³⁺/Ce⁴⁺ redox centers lower the energy barrier for charge transfer and enhance electrical conductivity. Moreover, photoluminescence (PL) and photocurrent measurements demonstrate more efficient charge separation. As a result, the Ce-ZnCdS photocatalyst exhibits markedly improved visible-light responsiveness, photocatalytic efficiency, and structural stability, underscoring rare-earth doping as an effective strategy to optimize facet exposure and charge dynamics in ternary sulfide photocatalysts.
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JOURNAL OF SEPARATION SCIENCE
·
2026
·Vol. 49
·期 7
·e70479
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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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Nanoenergy Advances
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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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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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Biomaterials Advances
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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
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
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Dangge Gao,Jiahao Zhang,Bin Lyu,Leihong Lyu,Jianzhong Ma,Lintao Yang
The composite after referred to as P(DMDAAC-AGE)/(Ce-ZnO) was prepared via free radical polymerization by polymer including quaternary ammonium salt and epoxy group which grafted onto the surface of Ce-ZnO. ZnO nanorods, Ce-ZnO nanorods, P(DMDAAC-AGE), P(DMDAAC-AGE)/ZnO composites, P(DMDAAC-AGE)/(Ce-ZnO) composites and commercial antimicrobials were respectively treated on the cotton fabrics and their biological properties were investigated. There is a synergistic effect between Ce-ZnO and N + from the polymer in the fabric treated with P(DMDAAC-AGE)/(Ce-ZnO) composite so that it had a better antibacterial activity than pure polymer and pure Ce-ZnO. The antimicrobial rate of fabric treated with P(DMDAAC-AGE)/(Ce-ZnO) composite could reach up to 96%. And in order to investigate the durable ability, the fabric was washed multiple times to simulate the daily use washing. The result showed that the fabric still gave a superior antibacterial performance after 11 cycles (the equivalent of 55 times house laundering). Simultaneously, the differences in the amount of P(DMDAAC-AGE)/(Ce-ZnO) composite deposited on the fibers after washing were also investigated.
研究领域:
材料科学
·
高分子化学
·
纳米复合材料
·
纺织功能材料
·
抗菌材料
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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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PubMed
高影响因子
FUEL
·
2023
·
IF 7.4
Fengyuan Liu,Junqi Li,Hong Yong Sohn,Chaoyi Chen,Jian Yang,Xudong Liu,Yuanpei Lan,Wei Zhang,Qin Wang,Li Liu
The objective of this work was to clearly elucidate the interactions on Mn-Ce interface and understand how they affect low temperature selective catalytic reduction (SCR) for NO x removal. In this work, three Mn-Ce catalysts in similar particle size and morphology with different Mn-Ce interface areas were prepared. MnO 2 @CeO 2 -F had the tightest and largest amount of Mn-Ce interfaces compared with MnO 2 @CeO 2 -P and MnO 2 -CeO 2 -M, and also exhibited the highest NO conversion degree at 100–150 °C as well as the strongest activity of Mn species and lowest generation of N 2 O. The TG-DTG, XPS and electrochemical impedance spectroscopy results proved the redox of Ce 4+ + Mn 3+ ↔ Ce 3+ + Mn 4+ on the Mn-Ce interface, and MnO 2 @CeO 2 -F had the highest Mn 4+ , Ce 3+ , O α concentrations. The results of the study on the redox reactions during the NH 3 -SCR process provided powerful evidence of the Mn 4+ /Mn 3+ and Ce 3+ /Ce 4+ recycles that are important for low temperature NH 3 -SCR process. Moreover, the Mn-Ce interface was directly proved to benefit the surface acid sites, redox ability, and activity of the adsorbed intermediates. Both the Eley-Rideal (E-R) and Langmuir-Hinshelwood (L-H) reaction mechanisms were observed in the SCR reaction with prepared Mn-Ce materials, where “fast SCR” can be observed with MnO 2 @CeO 2 -F. Moreover, the Mn-Ce interface also lowers the activation energy of the low-temperature SCR process, with MnO 2 @CeO 2 -F having the lowest activation energy. The results from this work offered powerful evidences for the interactions of Mn/Ce redox at the Mn-Ce interface and elucidated clear understanding of the effects of Mn-Ce redox on low-temperature SCR process, which is expected to promote the NO x removal process.
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