Small
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2022
·Vol. 18
·期 16
·2107401
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IF 15.153
Qiang Luo,Yunhong Li,Xiaobing Huo,Jinyang Li,Linqian Li,Wei Wang,Yilan Li,Shipeng Chen,Yinqiao Song,Ning Wang
The generation of undesired biofouling in medical and engineering applications results in a reduction in function and durability. Copying functionalities of natural enzymes to combat biofouling by artificial nanomaterials is highly attractive but still challenged by the inferior catalytic activity and specificity principally because of low densities of active sites. Here, an innovate strategy is demonstrated to stabilize high-density ultrasmall ceria clusters on zirconia for biofouling prevention. Benefiting from the unique structure, CeO 2 @ZrO 2 nanozyme can significantly enhance the haloperoxidase-mimicking activity in catalyzing the oxidation of bromide with H 2 O 2 into biocidal hypobromous acid as a result of abundant defects and surface strong acidity sites, inducing impressive antibacterial and antibiofouling capacity compared with that of pristine CeO 2 . This work is expected to open a new avenue for the rational design of cluster catalysts for various targeting catalytic applications.
研究领域:
材料科学
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纳米技术
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生物医学工程
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催化
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PubMed
高影响因子
Catalysis Science & Technology
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2022
·Vol. 12
·期 23
·7161-7170
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IF 6.177
Kaiyuan Hu,Jia Li,Yang Han,Dickon H. L. Ng,Ningning Xing,Yangsai Lyu
Micromotors have great potential in environmental monitoring and treatment. Herein, ZIF-67 derived Co3O4–CeO2 micromotors with a porous nanocage structure were synthesized by the ingenious combination of template scarification and calcination methods. Co3O4 inherited the typical porous structure of the ZIF-67 precursor and its skeleton offered a substrate for uniform in situ growth of CeO2 nanoparticles. The ZIF-67 derived Co3O4–CeO2 revealed a unique nanocage structure with a broken corner, resulting in the autonomous movement in the presence of H2O2. Based on the combination of peroxide-like activity, self-propelled motion and photo-Fenton like performance, a strategy to selectively and sensitively detect and quickly remove hydroquinone (HQ) from water was established. Taken together, this novel Co3O4–CeO2 nanocage-based micromotor could be effectively harnessed for water treatment.
研究领域:
环境科学
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材料科学
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分析化学
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
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IF 5.316
Caifu Dong,Yanli Zhou,Wei Liu,Wei Du,Xintao Zhang,Xueqin Sun,Litao Kang,Xiaoyu Zhang,Fuyi Jiang
Metal-organic frameworks (MOFs) are used to derive inorganic material, which is an effective way to achieve high performance electrode materials for sodium-ion batteries (SIBs) and lithium ion batteries (LIBs). In this work, a novel orthorhombic bimetallic organic framework, [ZnCe(L 7 )·2H 2 O]n (termed as ZnCeL, L = 5-aminoisophthalic acid) with 3D open framework was synthesized via a simple solvothermal reaction. Then ZnSe/CeO 2 /RGO was successfully fabricated via pyrolysis and selenization of ZnCeL and graphene oxide (RGO) composites. In the hybrid, ZnSe with high theoretical specific capacity and CeO 2 with electrocatalytic property are wrapped by conductive RGO. Herein, ZnSe/CeO 2 /RGO displays excellent sodium and lithium-storage performances. It reveals a sodium storage capacity of 113.2 mAh g −1 after 2000 cycles at 2.0 A g −1 . Meanwhile, ZnSe/CeO 2 /RGO as an anode for LIBs delivers a reversible capacity of 675 mAh g −1 at 0.1 A g −1 after 200 cycles. The electrochemical kinetic analysis reveals that the redox reactions are dominated by pseudocapacitive behavior. The excellent performance reveals a bright prospect of the bimetallic organic frameworks derived inorganic material for energy storage.
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高影响因子
JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Hongsheng Liu,Hengyue Li,Bin Huang,Yange Yang,Haibo Guo,Yan Xiao,Weiguang Yang
To enhance the proton conductivity and durability of Ce-based hybrid proton exchange membranes (PEMs), this study fabricates modified perfluorosulfonic acid (PFSA) hybrid membranes by incorporating the dual-function γ-AlOOH@Ti-supported CeO 2 composite oxide (γ-AlOOH@Ti/CeO 2 ). In addition to combining the inherent proton conductivity of γ-AlOOH with the excellent radical scavenging ability of CeO 2 , both the proton conductivity and durability of Ce-based PEMs are further improved by introducing Ti-dopant, which not only increases hydrogen vacancies on the surface of γ-AlOOH, which facilitate proton conduction, and induces electron transfer from γ-AlOOH@Ti to CeO 2 , which enhance free radical adsorption. As results shown, the proton conductivity and the fluoride release value of the resulting hybrid membrane are about 76 % higher and 35.25 % lower than those of the PFSA-CeO 2 membrane, respectively. Moreover, the performance of cells shows that, after accelerated degradation testing, the PFSA-γ-AlOOH@Ti/CeO 2 membrane exhibits the lowest peak power density decrease rate, the impedance increase rate and hydrogen crossover current density, with 11.79 %, 27.54 % and 3.04 mA cm −2 , respectively. These results suggest that compared to CeO 2 -hybrid PEMs, γ-AlOOH@Ti/CeO 2 -based hybrid PEMs exhibit higher proton conductivity and superior chemical stability, indicating the potential application of γ-AlOOH@Ti/CeO 2 -based hybrid PEMs in proton exchange membrane fuel cells.
研究领域:
材料科学
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能源化学
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Shixiang Chen,Xiaobei Xu,Zhihua Zhao
Flower-like FeWO 4 /CeO 2 heterojunction was fabricated for humidity sensor. • The response of the sensor was 327 at room temperature. • The sensors show excellent reproducibility, stability and wide humidity detection limits. • The sensors can monitor human respiratory status and detect non-contact finger proximity. As non-contact sensing, breath detection, and environmental humidity monitoring technologies advance, the demand for high-performance humidity sensors is becoming increasingly apparent. FeWO 4 is a reliable humidity-sensing material owing to its unique crystal structure and outstanding electrochemical properties. However, achieving fast responsiveness and high sensitivity to dynamic changes in humidity is still challenging. Herein, a series of flower-like FeWO 4 /CeO 2 heterojunction composites with various ratios were synthesized via a solvothermal method. The crystal phase, micromorphology, defect states and specific surface areas of the composites were systematically characterized by XRD Rietveld refinement, XPS, EPR, SEM, TEM, FTIR, Raman and BET analysis. When employed as resistive humidity sensing materials, the optimized FC-10 sample with a nominal CeO 2 loading of 10 wt% exhibits a response value (R 11% /R 95% ) of 327 at 95% RH, which is approximately 20 times that of pure FeWO 4 (16.19), and a fast response time of 9 s. Compared with most previously reported flower-like oxide humidity sensors, the FC-10 sensor achieves a synchronous enhancement in response magnitude and response speed. The sensor can resolve a steady-state humidity change of 1% RH in the medium humidity range of 45%–55% RH, and also features good repeatability and long-term stability. The DFT calculations reveal that the FeWO 4 /CeO 2 heterostructure possesses stronger thermodynamic binding affinity to water molecules than the two pure phases, and the interfacial charge redistribution promotes carrier separation, which accounts for the enhanced sensing response. Furthermore, the sensor shows application potential in respiratory humidity signal detection and non-contact proximity sensing based on water vapor perception. Download: Download high-res image (156KB) Download: Download full-size image
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高影响因子
JOURNAL OF CATALYSIS
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2026
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IF 6
Yanli Wang,Shurong Xiang,Zhimin Li,Zhongjie Guan,Xin Wen,Jianjun Yang,Gongxin Zhang
Photothermal hydrogenation of CO 2 into high value chemicals is a promising approach for addressing the energy crisis and mitigating CO 2 emissions. However, synergistic tailoring of light absorption and active sites at the atomic level to enhance catalyst performance still remains a challenge. Herein, Ru single atoms doping empowers CeO 2 with two advantageous modifications, inducing abundant of oxygen vacancies and full spectrum (200–2500 nm) responsiveness. Experimental and theoretical calculations verify that the Ru doped CeO 2 (Ru/CeO 2 ) catalyst featuring Ru single atoms and oxygen vacancy active sites, which enables simultaneous H 2 and CO 2 activation, and also reduce the energy barrier in the rate-limiting step of C-O bond cleaving. Meanwhile, the introduction of oxygen defect and Ru doping levels endows the full-spectral light absorption of CeO 2 , thus achieving high-efficiency light-to-thermal conversion. As a result, the optimal Ru/CeO 2 catalyst shows an unprecedented CH 4 yield rate of 123 mmol⋅g −1 ⋅h −1 with near-unity selectivity (˃99%) under light illumination without any external heat source, as well as a good catalytic stability.
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DOI
高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Shangpu Zhuang,Yilin Lei,Fan Xue,Tao Wei,Jiahui Chu,Mifen Cui,Zhuxiu Zhang,Ruiping Wei,Jihai Tang,Xu Qiao
Unraveling the synergistic interplay between Cu 0 /Cu + and support sites in Cu-based catalysts, coupled with oxygen vacancy-mediated active site modulation and their impact on hydrogenation performance metrics, remains a critical challenge in heterogeneous catalysis. Herein, we engineered a family of MOF-derived Cu/CeO 2 catalysts with tunable Cu loadings and oxygen vacancy(O V ) concentrations, featuring Cu 0 -Cu + -O V interfacial sites, through a MOF-mediated pyrolysis strategy. Operando DRIFTS, XPS, and Raman analyses revealed dynamic restructuring of active sites during hydrogenation of cyclohexyl acetate. The optimized catalyst achieved 98.0 % substrate conversion and 97.3 % cyclohexanol selectivity at 250 ℃ under 3 MPa H 2 , exhibiting a TOF 2.8-fold higher than conventional Cu/CeO 2 . The results indicate that the superior catalytic performance of Cu/CeO 2 -MOF should be attributed to the synergistic effects of Cu + , Cu 0 , and O V . This synergy enhances the ability of catalysts to adsorb and activate cyclohexanone, as well as its hydrogen dissociation capability. Further analysis indicates that O V exerts a direct influence on product selectivity. Moreover, the concentration of O V modulates the ratio of Cu + /(Cu + +Cu 0 ), which significantly affects conversion efficiency of the reaction. This work introduces an innovative approach to designing the electronic structure of copper-based catalysts, thereby optimizing the hydrogenation reactions of carbonyl compounds.
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高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2025
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IF 4.6
Tongkai Ji,Jiaojiao Li,Chaonan Jiao,Jing Wang,Xingwei Cai
The core–shell nanoreactor with unique structure (such as a protective shell, a fixed or movable core, and the void space between the core and the shell) and adjustable function has attracted great attention in the field of catalysis. In this work, a novel core–shell nanoreactor sSiO 2 @CeO 2 /Pt@mSiO 2 was designed and exploited as nanozyme in biosensing applications. The sSiO 2 @CeO 2 /Pt@mSiO 2 demonstrated improved peroxidase-like performance on account of the unique structure and the synergetic effect between CeO 2 and Pt. Based upon the peroxidase-like activity of sSiO 2 @CeO 2 /Pt@mSiO 2 , a colorimetric essay was developed for the ultrasensitive sensing of ascorbic acid (AA) owing to the excellent reducibility of AA. It was found that the absorbance of the oxidized TMB (ox-TMB) at 652 nm exhibited good linearity towards the concentration of AA in the range of 0–30 μM with the limit of detection as low as 16.4 nM. Furthermore, an enzyme cascade-triggered colorimetric reaction for the detection of alkaline phosphatase (ALP) was built on the basis of the excellent peroxidase-like activity of sSiO 2 @CeO 2 /Pt@mSiO 2 . ALP can catalyze the hydrolysis of AAP to produce AA, and the in situ generated AA can initiate the reduction of the ox-TMB produced in the system of sSiO 2 @CeO 2 /Pt@mSiO 2 -H 2 O 2 -TMB. The assay for the colorimetric sensing of ALP exhibited superior performance as compared to other methods with linear response of 5 × 10 -4 –1.4 U L -1 and lower detection limit of 9.3 × 10 -4 U L - 1 . This study not only provides a method to fabricate a nanozyme with high performance, but also offered a simply and ultrasensitive assay for the colorimetric analysis of AA and ALP.
研究领域:
生物传感
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纳米医学
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催化科学
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Yingnan Wang,Yiyuan Liu,Shujuan Jiang,Shaoqing Song
The decreased reaction activation energy and energetic carrier transfer kinetics behavior for H 2 O overall splitting concerning with the conducive chemisorption, and oriented conversion of *H and *OH are significantly important for efficiency and separation of H 2 generation. Herein, the concerns are addressed with crystal strain engineering induced by regulating Mo S and Ce O bonding lengths of CeO 2 /MoS 2 hetero photocatalysts to boost carrier transfer behavior and synergistically activate surface sites for eminent H 2 photocatalytic evolution. Ultrafast spatiotemporal atomic scale characterizations verify that CeO 2 /MoS 2 hetero photocatalysts endow an amplified polarization field pointing from the hexagonal MoS 2 {002} to cubic-phase CeO 2 {200} with an enlarged intensity to ~2.22 times, so prolonging the lifetime of charge carrier up to ~457 % on surface sites. Also, Mo 3 d and Ce 3 d as exposed surface redox sites by extending Mo S and Ce O promote chemisorption of *H and *OH, respectively, along with activation energy of H 2 O splitting down to ~73 %. Efficiencies for solar to H 2 from 1.30 % at 25 °C to 3.53 % at 60 °C under AM 1.5G are achieved, with the release of many H 2 bubbles. Our study highlights crystal strain engineering to synergistically regulate charge transfer behavior and surface site activation for photocatalytic H 2 production efficiency and releasing.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Hao Liu,Siqing Cheng,Jianjun Chen,Xiaoping Chen,Shangchao Xiong,Fang Huang,Houfeng Liu,Junhua Li,Chuanzhi Sun
Mitigating industrial nitrous oxide (N2O) emissions is critical for climate action, yet developing efficient low-temperature N2O decomposition catalysts under O2-containing conditions remains challenging. The weak oxygen–support interaction leads to unsatisfactory N2O decomposition performance in the supported Co3O4/CeO2 catalyst. This study aims to enhance the electronic oxide–support interaction in the Co3O4/CeO2 catalyst through Zn doping, thereby improving its catalytic performance for N2O decomposition under O2-rich conditions. The results demonstrate that, in the presence of 5% O2, the activation energy of the catalyst sharply decreases from 117.5 to 60.4 kJ·mol–1 after Zn doping (Co2.4Zn0.6O4/CeO2). Additionally, the doped catalyst exhibits strong durability to the O2 + H2O + NOx impurity gas components. Advanced spectral characterization and density functional theory calculations reveal that Zn doping modulates the geometry and electronic structure of active cobalt sites, optimizing the adsorption and activation capabilities of N2O molecules. This study elucidates the mechanism of N2O decomposition over the catalysts and establishes a clear structure–activity relationship between the atomic-scale configuration of active sites and their performance. These findings provide critical insights for designing efficient supported oxide catalysts through targeted doping strategies and offer new perspectives for developing highly efficient and low-energy N2O decomposition catalysts.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2024
·
IF 4.9
Haolin Xiao,Chenghao Liu,Hanwen Ren,Shanshan Wei,Feijun Zhao,Liangli Cao,Zhencheng Chen
The advancement of Alzheimer’s disease (AD) is directly correlated to the phosphorylation damage of Tau protein (Tau-441), which is considered the most reliable indicator for early detection of AD. Nevertheless, the concentration of Tau-441 in human serum remains considerably low. To address this issue, a paper-based fluorescence immunosensor based on internal filter effect (IFE) was developed for the detection Tau-441. The microfluidic paper-based channel was prepared and modified with a gold layer to attach primary antibodies and increase the sensitivity of the sensor. All at once, Au@CeO 2 nanorods was employed as a fluorescence probe to hydrolyze p-nitrophenyl phosphate ( pNPP ), which generates hydrolyzed product p-nitrophenol (PNP) can reduce or quench the fluorescence intensity of N-doped graphene quantum dots (NGQDs). The immunosensor was designed to detect an increase in the amount of Tau-441 collected as the fluorescence intensity of NGQDs decreased. The developed sensor demonstrated satisfactory results in clinical serum samples, offering a promising concept for an immunoassay tagged with nanozymes for early detection of AD. Overall, this microfluidic paper-based fluorescent immunosensor has the potential to improve early diagnosis of AD.
研究领域:
生物医学工程
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医学诊断
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纳米技术
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产品关联
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Yiquan Liao,Yichang He,Bin Zhang,Ye Ma,Minggang Zhao,Ruiqi Xu,Hongzhi Cui
Glutathione (GSH) is an essential antioxidant in the human body, but its detection is difficult due to the interference of complex components in serum. Herein, hollow double-layer Pt@CeO 2 nanospheres were developed as oxidase mimetics, and the light-assisted oxidase mimetics effects were found. The oxidase activity was enhanced significantly by utilizing the synergistic effect of Schottky junction and the localized surface plasmon resonance (LSPR) of Pt under UV light . A novel GSH colorimetric-fluorescent-SERS sensing platform was established, with the sensing performance notably boosted by using the light-assisted oxidase mimetics effects. This platform boasts an exceptionally low detection limit (LOD) of 0.084 μM, while the detection time was shortened from 10 min to just 2 min. The anti-interference detection with high recovery rate (96.84%–107.4 %) in real serum made it be promising for practical application.
研究领域:
生物化学
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医学诊断
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纳米材料科学
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）