JOURNAL OF FOOD COMPOSITION AND ANALYSIS
·
2025
·
IF 4.6
Xia Lu,Long Wang,Haowen Luo,Yuxin Wang,Qinyi Gao,Yajuan Yuan,Wupeng Ge
Foodborne Listeria monocytogenes ( L. monocytogenes ) poses a serious threat to public health, yet conventional detection methods remain time-consuming and lack sufficient sensitivity for complex food matrices. To address this gap, a Tb 3+ -doped mixed-valence cerium-based metal–organic framework (Tb 3+ @MVCM) was developed as a dual-functional probe via in situ partial oxidation of cerium-based metal–organic frameworks (Ce-MOFs) followed by Tb 3+ doping. This probe exhibits both fluorescence emission and redox activity. Based on this, we designed a dual-recognition, dual-mode aptasensor combining the Gram-positive bacteria binding capability of vancomycin (Van) with the specific molecular recognition of nucleic acid aptamers (Apt). The fluorescence signal of the Apt/Tb 3+ @MVCM–Van/Fe 3 O 4 –L. monocytogenes complex enabled highly sensitive detection with a limit of detection (LOD) of 5.19 CFU/mL, while the residual probe catalyzed a colorimetric reaction yielding an LOD of 6.48 CFU/mL. The analytical performance of this strategy was further validated using real tap water and milk samples, each spiked at three concentration levels. The obtained recoveries ranged from 92.3% to 109%, with relative standard deviations below 5.76%, confirming its applicability for real sample analysis. Overall, this study presents an innovative approach for the rapid detection of L. monocytogenes , and provides a convenient tool for food safety monitoring.
研究领域:
食品安全
·
生物传感器
·
分析化学
·
纳米材料
·
病原体检测
✓ 已验证
产品关联
DOI
高影响因子
POLYHEDRON
·
2025
·
IF 2.6
Xingru Liu,Huizhong Wu,Yingdi Zhang,Xicheng Deng,Haoyue Xu,WangYe,Yingxi Wang,Ling Li
A series of bimetallic Co/Ce-MOFs materials (Co/Ce-MOFs-NH 2 ) were synthesized via a solvothermal method, and their catalytic performance in peroxymonosulfate (PMS) activation for the degradation of Rhodamine B (RhB) was systematically investigated. The results demonstrate that the 3:1 Co/Ce-MOFs-NH 2 not only retains high catalytic activity but also exhibits significantly enhanced structural stability due to the introduction of Ce 3+ . Over 99 % of RhB was degraded within 3 min, and the material maintained 92.3 % of its initial activity after five consecutive cycles. Mechanistic studies revealed that · OH and singlet oxygen ( 1 O 2 ) serves as the dominant reactive oxygen species, while the synergistic redox cycles of Co 2+ /Co 3+ and Ce 3+ /Ce 4+ effectively promote the continuous activation of PMS. This study provides a novel strategy for designing highly efficient and stable bimetallic Metal-Organic Frameworks(MOFs) catalysts.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
·
2025
·
IF 4.9
Xu Dan,Qin Yuanyuan,Huang Yuhua,Wang Jiaming,Liu Xiao,Liu Feiyan,Li Xiancai,Cao Xiaohua
The enrichment and recovery of rare earth ions is an effective way to achieve sustainable utilization of wastewater resources. Using a simple ultrasound assisted synthesis method, nano hydroxyapatite (HAP) was introduced into ZIF-67 at room temperature to synthesize HAP/ZIF-67 composite materials with rich functional groups. XRD, FT-IR, SEM, XPS, and BET were used to characterize HAP/ZIF-67 composite materials. The effects of pH, contact time, adsorbent dose, ambient temperature, and initial concentration on the adsorbent were investigated through static adsorption experiments with repeated cycles. The results show that the synergistic effect of the Co–OH, –NH–, –C=N– functional groups in ZIF-67 and the Ca–OH and PO 4 3− groups in nano-HAP improves the adsorption capacity of the composite material. Under the optimal conditions, HAP/ZIF-67 reached saturation of Ce(III) adsorption within 20 min with a maximum adsorption capacity of 461.55 mg/g and an adsorption rate of 92.31%. The adsorption characteristic of Ce 3+ on HAP/ZIF-67 composites is more consistent with the Langmuir isotherm model and pseudo-second-order model, which indicate a single-layer, surface-homogeneous chemisorption process for Ce(III) adsorption. The adsorption process is a spontaneous heat absorption process according to thermodynamic research. The main mechanism of HAP/ZIF-67 adsorption of Ce(III) is surface complexation. After four elution experiments, HAP/ZIF-67 adsorbent has good reusability, indicating that HAP/ZIF-67 is a promising adsorbent in the field of rare earth ion recovery.
✓ 已验证
产品关联
DOI
高影响因子
CRYSTENGCOMM
·
2025
·
IF 2.6
Feng Jiao,Jinzhao Huang,Zehui Liu,Yu Zhang,Xiaolong Deng,Ke Zhang,Guixin Zhao
In this paper, sodium sulfite (Na₂SO₃) and cerium nitrate (Ce(NO₃)₃) were added in the hydrothermal method for the preparation of FeCo LDH, and needle-like Ce-FeCo LDH (NS) catalysts were grown in situ on a carbon cloth.The additions of Na₂SO₃ and Ce(NO₃)₃ regulated the electron transfer of the metal cations in the LDH, and significantly improved the performance of the catalysts. The prepared Ce-FeCo LDH (NS) catalysts exhibited excellent electrochemical properties. The overpotential of OER was 221 mV at a current density of 10 mA/cm² in 1 M KOH. The surface structure and catalytic performance of the catalysts were maintained well after 100 h stability test. This study provides a new idea for the improvement and design of OER catalysts based on FeCo LDH, which is an important reference for clean energy research.
研究领域:
材料科学
·
清洁能源研究
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2025
·
IF 4.5
Siwen Pi,Jie Li,Yingde Zhang,Weina Zhou,Hui Liu,Qing Wang
M-type strontium ferrite Sr 0.98 Ce 0.02 Dy x Fe 12- x O 19 ( x =0.00-0.20) doped with Ce-Dy elements was prepared by solid-phase sintering. The X-ray diffraction (XRD) results revealed the formation of the M-type hexaferrite having P6 3 /mmc as a space group along with the co-existence of a secondary DyFeO 3 phase; The field emission scanning electron microscopy (FESEM) results show that the grain boundaries of the samples are clear, the crystallinity is good and the grains have been refined; The purity of the sample can be proved by energy dispersive spectrometer (EDS), and no other elements were found except for doped elements; It is clear that the experimental weight percentages of each element are quite close to the theoretical from the reactants used to synthesize each sample. Meanwhile, the FTIR results show tetrahedral and octahedral tensile vibration peaks induced by Fe–O bonds of M-type strontium ferrite; Through the analysis of the vibrating sample magnetometer (VSM), when the doping amount of Dy element is x =0.08, the coercive force of strontium ferrite is increased. At this time, hard ferrite with high coercive force and high saturation magnetization intensity is prepared. Demonstrating the unlimited potential of M-type strontium ferrite in the fields of magnetic recording and storage devices.
研究领域:
材料科学
·
磁性材料
·
无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Catalysis
·
2025
·
IF 13.1
Zhiying Liu,Meiqing Shen,Shuhuan Wang,Chunjuan Zhang,Jun Wang,Wei Li,Feng Gao
To elucidate how CeO2 additives enhance the activity and stability of Cu-SSZ-13 SCR catalysts, we investigated two CeO2/Cu-SSZ-13 composite catalysts with Cu loadings of 1.0 and 2.5 wt %. These catalysts were characterized using an array of techniques, including XRD, SEM, TEM, NMR, H2-TPR, NH3-TPD, DRIFTS, DFT and SCR reactions under both steady-state and transient kinetic analysis conditions. Our findings demonstrate that CeO2 promotes low-temperature SCR by forming exchanged, isolated Ce-ions, which enhance Cu-ion coupling efficiency. External surface CeO2 particles can convert NO + O2 to surface nitrates, but these species primarily act as spectators below ∼250 °C, and do not contribute to the enhancement of low-temperature SCR activity. In contrast, these surface CeO2 particles can synergizes with Brønsted acid sites (BAS) to elevate high-temperature SCR activity. Furthermore, hydrothermal stability and sulfur resistance are improved by the presence of external surface CeO2 particles, a benefit that applies irrespective of Cu loading.
研究领域:
催化
·
环境化学
·
材料科学
·
物理化学
·
表面科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Chen Feng,Haoxi Jiang,Lingtao Wang,Guochao Yang
CO 2 methanation is a critical process for converting CO 2 greenhouse gas into clean methane fuel, which holds significant strategic importance for environmental sustainability and energy sectors. Thermodynamic limitations demand low-temperature catalysts with enhanced low-temperature activity. This study employs solvent evaporation-induced self-assembly (EISA) to in-situ encapsulate Ni and Ce within SBA-15 molecular sieves. The approach significantly enhances low-temperature reactivity, achieving 67.5% CO 2 conversion and nearly 100% CH 4 selectivity at 300 °C, outperforming among Ni-based catalysts with silica carriers. Textural and electronic characterizations reveal that confinement effects of SBA-15 and electronic promotion of Ce synergistically strengthen the low temperature activity in methanation. This results in smaller Ni nanoparticles and an electron-rich Ni state, optimizing catalytic performance. Mechanistic analysis suggests that the Ce-modified Ni catalyst favors the formate pathway over the CO pathway, which supports the high methane selectivity and low carbon monoxide selectivity observed in this study.
研究领域:
催化化学
·
环境科学
·
能源材料
·
化学工程
·
纳米催化
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Yanwei Sun,Guangyan Xu,Chang Liu,Yajie Pan,Yingjie Wang,Yunbo Yu,Hong He
Although palladium-based catalysts exhibit excellent methane oxidation activity, sulfur poisoning still leads to severe deactivation. To overcome this, we synthesized an oxide-zeolite (OXZEO) composite, Ce x /Pd@MFI, via combined hydrothermal treatment and ball milling . In the resulting architecture, PdO x active sites are spatially confined within the MFI framework, while CeO 2 nanoparticles uniformly decorate the external surface as protective species. The optimized Ce 3 /Pd@MFI catalyst demonstrated markedly enhanced sulfur resistance, achieving a T 50 —the temperature at which 50 % CH 4 conversion occurred—of 361 °C after sulfation with 100 ppm SO 2 . Moreover, Ce 3 /Pd@MFI maintained sulfur-resistant stability for 110 h, far surpassing Pd@MFI and Pd/Al 2 O 3 , which rapidly deactivated upon exposure to SO 2 for bare 1 h. Furthermore, we proposed a redox-atmosphere switching method to regenerate sulfated CeO 2 protective species, thereby enabling the Ce x /Pd@MFI catalysts to maintain durable sulfur tolerance. The broad applicability of the OXZEO design was further confirmed in CO oxidation : Ce 3 /Pd@MFI remained stable under high SO 2 concentrations during CO oxidation. This work establishes a paradigm for engineering sulfur-resistant palladium catalysts via synergistic spatial confinement and protective-site incorporation, offering critical insights for the development of robust emission-control catalysts in sulfur-rich environments.
研究领域:
催化化学
·
环境催化
·
材料化学
·
能源化学
·
大气污染控制
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Yuting Lin,Yuran Li,Qiang Cao,Jianshan Wang,Yanbin Cui,Tingyu Zhu
The activity of carbonyl sulfur (COS) hydrolysis catalyst is inhibited by hydrogen chloride (HCl) and then restricts the application of blast furnace gas purification. The presence of HCl significantly reduces the COS hydrolysis conversion by destroying the Al-O bond and -OH. A novel Na and Ce supported Al-based catalyst (Na-Ce/Al 2 O 3 ) was designed to enhance the activity of COS hydrolysis in an HCl-containing atmosphere. It has been found that the addition of Ce creates oxygen vacancy, with three effects on promoting catalyst activity. The oxidation of hydrogen sulfide (H 2 S) is inhibited due to the occupation of the oxygen vacancy by HCl, reducing the sulfur species deposition. H 2 O can be adsorbed and dissociated on the oxygen vacancy to produce -OH group, improving COS hydrolysis. HCl can be preferentially anchored on the oxygen vacancy based on the adsorption energy, protecting -OH group. The improvement of HCl-resistance is essential for the Na-Ce/Al 2 O 3 hydrolysis catalyst to adapt to the complex atmosphere of blast furnace gas and increase the catalyst lifespan.
研究领域:
催化化学
·
环境工程
·
材料科学
·
工业气体净化
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CATALYSIS
·
2026
·
IF 6
Xiangwei Ren,Yue Zhang,Shuzhen Lyu,Li Wang,Ruichen Liu,Guozhu Liu,Rongrong Zhang
Oxidation of methylene compounds remains a critical challenge due to the difficult activation of C–H bond. Herein, Ce–Al composite oxide was prepared and employed for oxidation of 2-alkyl-anthrone and anthracene to corresponding anthraquinone (AQ) which is used widely in the H 2 O 2 production by the anthraquinone process and fine chemical industries, with air at mild conditions. Characterization results show that incorporation of Ce, existing partially in CeAlO 3 phase, results in the generation of oxygen vacancies and enhancement of reducibility. The optimal Ce–Al composite oxide (10%CeAl) exhibits superior performance in oxidation of 2-alkyl-anthrone and anthracene to AQ. The conversion of 100% could be achieved for 2-alkyl-anthrone to AQ at reaction time of 8 h and for 2-alkyl-anthracene to AQ at 15 h over 10%CeAl, with 100% selectivity. In-situ electron paramagnetic resonance measurements and DFT calculations reveal that the Ce–O–Al structure in CeAlO 3 phase promotes the formation of carbon-centered radical R • through altering the C–H cleavage mechanism from hydrogen atom transfer to proton-coupled electron transfer (PCET), and superoxide anion radicals (O 2 •− ) formed on oxygen vacancies promote oxidation of R • .
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Bio
·
2026
·
IF 10.2
Yongkang Lai,Yongliang Ouyang,Xiaojing Yin,Tao Yu,Jianhua Wan,Xueyang Li,Yi Hu,Xu Shu,Huan Wang
Chronic pancreatitis (CP) is a lifelong progressive fibrotic inflammatory disorder for which no effective cure is currently available. Persistent and recurrent inflammatory stimulation induced by reactive oxygen species (ROS) is a key driver of pancreatic fibrogenesis, making oxidative stress a promising therapeutic target to halt disease progression. In this study, we developed a nanosystem, HC@CeMOF, consisting of a small-sized cerium-based metal–organic framework (CeMOF) core loaded with curcumin and coated with hyaluronic acid (HA), enabling precise targeting of inflamed pancreatic tissue. HC@CeMOF exhibits a small-sized particle size along with favorable cellular and biological safety profiles. Once administered in vivo , the nanosystem exploits the specific binding affinity of HA to CD44 receptors on macrophages to selectively accumulate at inflamed pancreatic sites. Subsequently, the cerium-based nanozyme efficiently scavenges ROS through the reversible redox cycling between Ce 3+ and Ce 4+ , while the slow release of curcumin further suppresses the NF-κB signaling pathway and modulates inflammatory cytokine levels, thereby achieving synergistic anti-inflammatory and antioxidant effects. Collectively, these mechanisms substantially attenuate CP progression. This targeted ROS-scavenging and anti-inflammatory strategy holds promise as an alternative therapeutic approach for chronic pancreatitis.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2022
·
IF 8.943
Jun Cai,Yuanhang Ren,Yi Xia,Lei Tao,Xueqian Wang,Langlang Wang,Ping Ning,Yixing Ma
A cubic SrTiO 3 (STO) composite material co-doped with Ce and Cr ions was synthesized by solvothermal method . The fully characterized samples were employed as photocatalysts for the oxidation of Hg 0 . The co-doped samples afforded excellent catalytic removal efficiency of 98.99% using UV irradiation and 89.9% using visible light irradiation for Hg 0 compared with the single-doped samples. It was found that co-doped samples had a lower electron-hole recombination rate, largest Brunauer-Emmett-Teller specific surface area , and reduced band gap. The electron spin resonance results revealed that ·O 2 − and ·OH were the main active species in the catalytic process. Moreover, the co-doped samples exhibited the best electron transfer rate and the highest photocurrent response intensity. The electron transfer between the elements in the co-doped sample enables it to achieve stable and efficient catalytic performance. In addition, even after five consecutive catalytic runs, the co-doped sample maintained high catalytic activity . This work highlights the potential of the perovskite-type STO materials in the photocatalytic oxidation of gaseous mercury.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）