CERAMICS INTERNATIONAL
·
2026
·
IF 6
Tao Wang,Jian Zou,Jun Yang
A series of molybdenum (Mo) and cerium (Ce) co-doped Y 2 Zr 2 O 7 inorganic cool pigments were synthesized via a high-temperature solid-state reaction method. Substitution of Zr by Mo introduces interstitial oxygen into the lattice, leading to lattice expansion while enhancing the near-infrared reflectance of the pigments. Mo coexists in the form of Mo 6+ and Mo 5+ ions, with the yellow coloration primarily originating from Mo 5+ . The lattice expansion induced by the incorporation of larger Ce ions suppresses the formation of interstitial oxygen, thereby promoting an increase in Mo 5+ content, which results in a higher b* value while maintaining high near-infrared reflectance. The optimized composition (Y 1.55 Ce 0.45 Zr 1 Ce 0.65 Mo 0.35 O 7 ) exhibits the following chromatic parameters: L* = 88.26, a* = -3.19, b* = 55.15, and R NIR =93.68%. Furthermore, the simulation experiment revealed that the surface temperature of the coating based on the as-prepared pigment is 16.3 °C lower than that of the cement coating and 11.4 °C lower than that of the commercial iron yellow coating, demonstrating excellent solar reflective performance.
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Advanced Healthcare Materials
·
2026
·
IF 11
Xiaoling Liu,Run Huang,Ling Zou,Lu Yang,Yonghui Wu,Dandan Li,Jinbao Li,Jian He,Xiaochao Yang
Oxidative stress caused by the excessive accumulation of reactive oxygen species (ROS) plays a critical role in the development of acute respiratory distress syndrome (ARDS). Current antioxidant therapies using organic ROS scavengers fail in decreasing mortality due to the low ROS scavenging activity and fast metabolic rate. Inorganic ROS scavenging nanoparticles provide potential options for investigating ARDS antioxidant therapy. However, previous studies mainly focus on the ROS scavenging activity of these nanoparticles, while their capability to modulate the endogenous antioxidant system remains largely unexplored. Herein, mesoporous Ce–Mn–O bimetallic oxide nanoparticles (NP CeMn ) are designed and synthesized to activate the endogenous antioxidant system for ARDS therapy. Morphologically similar ceria nanoparticles (NP Ce ) and manganese oxide nanoparticles (NP Mn ) are used for comparison. In vivo and in vitro results demonstrate that NP Ce and NP Mn can promote the expression of SOD1 and SOD2, respectively, while NP CeMn can promote the expression of both SOD1 and SOD2. Mechanism studies establish a Keap1/Nrf2/SOD axis through which NP CeMn acts to activate the endogenous antioxidant system. Based on this property, NP CeMn can effectively alleviate oxidative stress and inflammation in the lung of the murine ARDS model. These findings suggest that activating the endogenous antioxidant system via inorganic nanoparticles is a promising ARDS therapeutic strategy.
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Yifei Ye,Zhuoshen Huang,Hao Pan,Zhaokun Wang,Wei Xia,Guangtong Hai,Ge Wang,Xiubing Huang
Transition metal oxyhydroxides are crucial for the electrochemical oxidation of 5-hydroxymethylfurfural (HMF), though the co-adsorption and activation mechanisms of HMF and hydroxyl species require further clarification. This study designs cerium-doped Co-based layered double hydroxide (LDH) arrays, including 3%Ce-Co 3 Fe 1− x Al x -LDH/NF, to investigate Fe as a secondary active center and the role of Ce–O–TM (Transition metal) bridges in regulating HMF/OH − adsorption. Theoretical calculations indicate that Ce–O–TM bridges induce f – p – d gradient orbital coupling, optimizing HMF/OH − adsorption configurations and facilitating the HMF oxidation reaction (HMFOR). Synchrotron radiation characterization and in situ Raman spectroscopy reveal that Fe enhances electronic interaction between Ce and Co/Fe sites, strengthening the stability of M–O bonds, suppressing metal dissolution, and further optimizing reactant adsorption. Fe doping also modulates charge distribution and accelerates charge transfer. The optimized 3%Ce-Co 3 Fe 1 -LDH/NF delivers industrial current density (0.1 A cm −2 ) at 1.44 V RHE , with 98.1% HMF conversion, 99.6% FDCA yield, and 99.8% Faradaic efficiency. In an anion exchange membrane (AEM) electrolyzer, it achieves 0.5 A cm −2 at 2.1 V while maintaining high stability across 0.1–0.5 A cm −2 . These results provide an effective strategy for designing high-performance HMFOR catalysts through electronic structure modulation.
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Applied Materials Today
·
2025
·
IF 6.9
Chenyang Cai,Ming Zhou,Shuai Cheng,Jiabin Cai,Meiling Chen,Liping Cai,Qinbo Peng,Guangyao Yang,Xiaoyan Wen,Qian Wang
Formaldehyde (HCHO) release is a long process due to indoor decoration and furniture, which poses a serious threat to human health. Yet it is still a great challenge to remove formaldehyde efficiently at room temperature for a long time. Herein, inspired by porous lotus seedpods, cerium-doped manganese-based catalysts supported on diatomaceous earth (MnXCeY-DM) with high efficiency for formaldehyde removal were successfully prepared by co-precipitation and coordination complexation processes. The results showed that the transition metal oxides on the surfaces of both catalysts before and after doping with Ce were not highly crystalline and well-dispersed. The introduction of Ce reduced the agglomeration of the excessive metal oxides on the surfaces. Noteworthy, Ce doping can bring larger porosity, specific surface area, and more nano effects, which can accelerate the oxidative breakdown of formaldehyde. The absorption and reaction efficiency of the Mn20Ce5-DM catalyst reached 100% for 12 h at an HCHO concentration of 2 mg/m 3 at room temperature, which was 4.67% higher than that of the Ce-undoped catalyst. The final removal efficiency of Mn20Ce5-DM reached 78.05% even after five cycles. At room temperature, diatomaceous earth (DM) has a strong adsorption function, and the addition of Ce element promotes the oxidation process of HCHO, which strengthens the synergistic effect of the decomposition of HCHO. This research provides an excellent strategy to improve the HCHO degradation efficiency and persistence of manganese-based catalysts at room temperature.
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ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Weijie Zhang,Lintao Wang,Wei Pei,Jie Dang,Yewen Zhang,Xiang Liu,Abdullah Maqsood,QinQin He,Min Li
Introducing defects into Metal–organic frameworks (MOFs) is an effective measure to increase adsorption sites, which is of great significance for improving phosphorus (P) adsorption performance. In this study, various defect-containing cerium (Ce)-based MOFs (Ce-MOFs) were prepared by introducing different types and equivalents of monocarboxylates. Among them, butyric acid (BA)-regulated Ce-MOF (Ce-MOF(40BA)) exhibited excellent adsorption performance with a maximum phosphate adsorption capacity of 117.28 mg P/g. When the initial phosphate concentration was 3 mg P/L, the adsorption equilibrium could be reached within 10 min with a phosphate removal rate of 96.6%. Thermogravimetry analysis (TGA) showed that the average coordination number of Ce-MOF (40BA) was only 4.33 compared to six of the pristine Ce-MOF, indicating an abundant defect content. By increasing defects, mesopores were introduced, enriching the material’s pore structure and achieving a mesopore proportion up to 58.81%. X-ray photoelectron spectroscopy (XPS) analysis revealed that the introduction of defects created numerous unsaturated metal centers, leading to a significant increase in Ce(III) contents. Further density functional theory (DFT) calculations indicated that the defective Ce-MOF had a lower binding energy compared to the pristine Ce-MOF, making it more favorable for phosphate adsorption. This study provides a strategy for preparing efficient defect-containing MOF adsorbents. The excellent adsorption performance of Ce-MOF(40BA) in practical wastewater bodies makes it a promising material for solving water eutrophication.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Huimin Zhang,Yu Liu,Qi Li,Xinlu Zhao,Mingze Sun,Jiaxin Hou,Chuanyu Guo,Chaobo Huang,Xiaoli Cheng,Lihua Huo,Minghui Yang,Yingming Xu
High-performance humidity sensors have significant potential applications in areas such as smart homes and digital healthcare, but the limited humidity sensing performance of materials hinders their practical application. One major challenge in enhancing the sensing performance of humidity-sensitive materials is the effective regulation of oxygen vacancy content within their crystal structures. In this study, we propose a dual regulation strategy of “ligand induced-pyrolysis synergy” to control the oxygen vacancy content effectively. Specifically, Metal–Organic Framework (MOF) materials containing oxygen vacancies were synthesized using a monocarboxylic acid conditioning method. We further increased the oxygen vacancy content in the MOF derivatives by adjusting the heat treatment temperature. The prepared U6C-20-400 sensor demonstrated excellent performance across a wide humidity range of 3–97% relative humidity (RH), with a rapid response/recovery time of just 0.5 s and 1.2 s. Furthermore, it effectively monitored food as it transitioned from raw to cooked and even burnt during cooking. This study offers valuable insights for developing high quality humidity sensors tailored for next-generation smart home applications.
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MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2026
·Vol. 227
·期 1
·e00443
·
IF 2.7
Jinbo Feng,Yaodong Liang,Yongjun He
This study reports a novel adsorbent prepared via a Pickering emulsion-template method for the efficient adsorption of Ce(III) from aqueous solutions. Water-in-oil Pickering emulsions were first stabilized by commercial nano-SiO2, using an aqueous sodium alginate solution as the dispersed phase and kerosene-diluted di-(2-ethylhexyl) phosphate (P204) as the continuous phase. The emulsion droplets were then gelled in a Ca 2 + solution to form stable Pickering emulsion hydrogel beads (PEHG), thereby encapsulating the P204-containing organic phase within a calcium alginate matrix. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the successful encapsulation and the structural integrity of the PEHG. Batch adsorption experiments demonstrated that the adsorption kinetics followed a pseudo-second-order model, indicative of chemisorption, while the equilibrium data were best described by the Redlich-Peterson isotherm, suggesting a complex adsorption mechanism involving both monolayer and multilayer interactions. Remarkably, the PEHG retained a Ce(III) removal efficiency above 99% over five consecutive adsorption-desorption cycles, with no observable structural degradation or leakage of the encapsulated phase. This strategy of encapsulating the functional organic phase (P204) within a hydrogel matrix not only enhances its utilization efficiency but also effectively prevents its leakage into the aqueous environment, offering a promising and sustainable approach for rare earth element recovery.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Qinghong Meng,Ji-Guang Li,Qi Zhu,Xiaodong Li,Xudong Sun
A series of phase-pure [(Gd 0.6 Lu 0.4 ) 1- y Ce y ] 3 [Al 1- z (Mg/Si) z ] 5 O 12 ( y = 0–0.012, z = 0–0.15) garnet phosphors were synthesized via gel-combustion, and the effects of Mg 2+ /Si 4+ substitution on characteristics of the garnet host and Ce 3+ luminescence were investigated in detail. The maximum amount of equimolar Mg 2+ /Si 4+ dopants that can be incorporated into the garnet lattice and the optimal Ce 3+ content for luminescence were determined to be around z = 0.15 and y = 0.010, respectively. Mg 2+ /Si 4+ codoping was analyzed to narrow bandgap of the host, non-uniformly compress the [CeO 8 ] dodecahedron , enlarge the [Al-O] polyhedrons and meanwhile alter bond angles. Increasing Mg 2+ /Si 4+ content was found to lower the intensity, fluorescence lifetime and thermal stability of Ce 3+ luminescence and meanwhile red-shift the 4f-5d 1 excitation/emission peaks. The results were interpreted by considering band structure and crystal field splitting of the Ce 3+ 5d energy level. The y = 0.01 and z = 0.15 phosphor exhibited a broad emission peaked at ∼561 nm under 457 nm excitation, with CIE color coordinates of around (0.449,0.527), a correlated color temperature of ∼3567 K, a fluorescence lifetime of ∼43 ns, and an activation energy for thermal quenching of ∼0.267 eV. Electroluminescence indicated that the phosphors may find potential application in warm-white LEDs excited by blue-LED chips.
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CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Xin Wang,Yujie Ren,Wenge Fan,Qingqing Zhu,Peilin Yuan,Peng Jin,Xiaodong Wei,Chufeng Sun
Yttria-stabilized zirconia (YSZ) ceramic-based flow passage components are highly susceptible to cavitation erosion. To counter this limitation, rare-earth oxide (REO, RE=La, Ce, Nd, Gd) doped YSZ with superior cavitation erosion resistance was successfully prepared using spark plasma sintering technology. The microstructures, phase compositions, mechanical properties, and cavitation erosion resistance of YSZ and REYSZ were investigated. The results indicate that REO doping promoted the generation of t'- and c-phases, leading to a denser structure and grain refinement. Moreover, the presence of a larger concentration of the t'-phase resulted in a higher microhardness and elastic modulus. Owing to its superior mechanical properties, fine grains and high density, REYSZ exhibited improved cavitation erosion resistance. Particularly, NdYSZ exhibited 12.4 times higher cavitation-erosion resistance than that of YSZ. Furthermore, the grain boundaries of YSZ contain special m-phase bands, which are also responsible for the quicker exfoliation of grains during cavitation erosion. The segregation of rare earth elements at the grain boundaries inhibited the generation of m-phase bands, resulting in a longer cavitation erosion incubation period for REYSZ.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Diwen Xiao,Jiahao Cao,Hongjie Wang,Wenyi Dong,Fang Ma
Fluoride-containing wastewater pollution poses a serious threat to the global environment. Adsorption represents the most widely employed defluoridation process. Among various adsorbents, metal-organic frameworks (MOFs) demonstrate considerable potential. However, current zirconium-based MOFs for fluoride removal face challenges such as high cost, low adsorption capacity, insufficient mechanistic understanding, and difficulties in reuse due to the lack of stable immobilization methods. Herein, a zirconium‑cerium MOF (denoted as Zr/Ce-M) was prepared by doping MOF-801 with the low-cost metal cerium. At an initial F − concentration of 26 mg/L, its actual adsorption capacity reached 213 mg/g. This represents a 326% improvement compared to conventional MOF-801 and is 66% higher than the adsorbent with the highest known adsorption capacity.Further, zirconium/cerium MOF-based sponge (Zr/Ce-MS) was prepared via a simple method. Zr/Ce-MS exhibited exceptional loading stability under mechanical stress and solvent corrosion. Regeneration tests confirmed effective fluoride removal after eight cycles. Computational results revealed an upward shift in the d-band center of metals and enhanced electron-donating capability after Ce doping. Monodentate coordination (Zr F and Ce F) proved more stable than μ₂- or μ₃-bridging configurations. Strong hybridization occurred between Zr d/Ce d and F p orbitals, with Ce doping strengthening electron transfer from Zr to F − . The defluoridation mechanism of Zr/Ce-MS involves ion exchange, electrostatic interactions, hydrogen bonding, and Lewis acid–base complexation.This work provides new insights for developing fluoride adsorbents and mechanistic analysis.
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ChemSusChem
·
2026
·Vol. 19
·期 12
·e70804
·
IF 5.9
Kening Xiang,Haoyu Wang,Yuhao Hong,Tao Liu,Cuizhu Li,Yared Daniel Reta,Yeshitla Tsegaw Gizaw,Dongfang Lu,Dong-Hau Kuo,Jinguo Lin,Xiaoyun Chen
Herein, a simple and environmentally benign synthetic strategy is developed to construct a hydrazine-regulated Bi/S co-doped CeVO 4 trimetallic sulfur-oxide photocatalyst (Bi/S-CeVO 4 ). The resulting material features abundant oxygen vacancy (Vo) defects and stabilized multivalent Ce 3+ /Ce 4+ and V 4+ /V 5+ states, which synergistically enhance photocatalytic hydrogen evolution reaction (PHER) performance under visible light irradiation. Band structure analyses indicate that Bi/S co-doping effectively modulates the electronic structure of CeVO 4 , leading to improved photocatalytic performance toward PHER. The coexistence of multivalent Ce 3+ /Ce 4+ and V 4+ /V 5+ species provides efficient electron-hopping pathways, facilitating photogenerated charge separation and transfer while prolonging carrier lifetime. In addition, Vo defects served as catalytic sites for water-molecule adsorption and activation, further accelerating surface reaction kinetics. Benefiting from these synergistic effects, the optimized Bi/S-CeVO 4 -3, featuring the highest electrochemically active surface area of 0.0015 cm 2 and Vo concentration of 24.5%, and suitable ratio of Ce 4+ /(Ce 3+ +Ce 4+ ) (41.8%) and V 4+ /(V 4+ +V 5+ ) (38.5%), delivers the highest PHER rate of 1514.7 μmol·h –1 , with an apparent quantum efficiency (AQE) x-ray diffraction of 15.28% at 420 nm. Moreover, the catalyst demonstrates excellent stability and durability. This work presents a feasible and effective strategy for electronic structure and defect engineering of CeVO 4 -based photocatalysts to achieve efficient solar-driven hydrogen evolution. Graphical Inspired by battery-material redox chemistry, hydrazine-regulated Bi/S co-doping constructs a defect-rich CeVO 4 sulfur-oxide with stabilized multivalent states, enabling a photocatalytic hydrogen evolution reaction rate of 1514.7 μmol·h –1 and an apparent quantum efficiency of 15.28% at 420 nm.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Bing Wang,Yao Liu,XiangBo Feng,MeiMei Xu,EnZhou Liu,YuZhen Zhao,ZongCheng Miao,Zhuo Li
Ag 3 PO 4 exemplifies the persistent activity-stability trade-off in photocatalysis, where its high photo-oxidation capability is inevitably undermined by severe photocorrosion. This work breaks this coupling by constructing Ce 3 + /Ce 4+ redox-mediating centers within Ag 3 PO 4 . The optimal catalyst achieves near-complete degradation of tetracycline antibiotics within 30 min, with a rate constant increased by approximately 3.2 times, and maintains over 85% of its initial activity after five cycles, whereas pristine Ag 3 PO 4 undergoes complete deactivation. Singlet oxygen ( 1 O 2 ) is identified as the dominant species, and a dual-pathway generation mechanism that bypasses the material's inherent constraints is unveiled: alongside the • OOH‑mediated hole oxidation pathway, the Ce 3+ /Ce 4+ couple catalyzes a sequential two‑electron O 2 reduction to H 2 O 2 and its subsequent Fenton‑like conversion to 1 O 2 . Combined spectroscopic and theoretical analyses confirm that these centers act as exclusive electron traps, diverting photoexcited electrons away from Ag + sites—thus inhibiting Ag + → Ag 0 corrosion—and directing both electron and hole densities toward themselves in the excited state. This work demonstrates that engineering atomically dispersed redox mediators can decouple charge separation from detrimental surface reactions, providing a general strategy to simultaneously confer high activity and robust stability upon otherwise fragile photocatalysts.
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