INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Yi Yang,Yuxi Si,Libin Liu,Hairui Lin,Chuan Qin,Dangguo Cheng,Youwei Cheng
The chemical conversion of 5-hydroxymethylfurfural (HMF) into high-value-added products offers a potential substitute for fossil-based products, which has garnered significant attention in light of energy depletion and environmental concerns. Among the various HMF derivatives, 2,5-bis(hydroxymethyl)furan (BHMF), applicable in polyester manufacturing, pharmaceutical intermediates, biodiesel, and other sectors, can be synthesized through the C═O hydrogenation of HMF. However, the inevitable humins formation and the over-hydrogenation/hydrogenolysis constrain the further application of this process. In this study, a series of hydroxyl-enriched Pt-based catalysts have been prepared and applied in the hydrogenation of HMF. For 1% Pt/CeO2, the selectivity for BHMF over 85% can be consistently maintained at 30 °C or at a substrate concentration of 100 g/L. Experiments and characterization studies indicate that hydroxyl groups presented on the catalyst surface could protect BHMF, inhibiting side reactions and thereby increasing carbon balance and main product selectivity. This superior selective catalytic performance was further demonstrated in the C═O hydrogenation over various aromatic aldehyde substrates, providing a novel approach for biomass compounds conversion to value-added chemicals and providing a perspective for catalyst design.
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高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Kai Qian,Lingyang Meng,Guyu Zhang,Ji Li,Jinze Lyu
A principal challenge in the catalytic ozonation of organic wastewater is the efficient transfer of ozone to the catalyst. In this study, a neural network-like tri-phase membrane was developed by casting CeO 2 and polyvinylidene fluoride (PVDF) onto non-woven fabric (NWF) for catalytic ozonation of sulfamethoxazole (SMZ). The neural network-like structure with abundant pores enhanced ozone transport efficiency. The reaction rate constants for SMZ degradation by CeO 2 -C@PVDF-NWF and CeO 2 -R@PVDF-NWF were 81% and 87% higher, respectively, than those of the corresponding suspension systems. Additionally, the ozone reaction factor and ∙OH exposure of CeO 2 -R@PVDF-NWF increased by 118% and 64%, respectively, compared to PVDF-NWF. Overall, this work provided a novel catalytic system based on the CeO 2 -loaded PVDF-NWF tri-phase interface membranes for pollution control.
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高影响因子
Journal of Environmental Chemical Engineering
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2025
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IF 7.2
Xiaorui Zhang,Laiqing Zhang,Hanlin Ye,Zikang Zeng,Jian Yang,Chuang Han,Yujun Liang
Metal ions doping has attracted noteworthy attention for tuning the electronic structure of semiconductors. However, high doping content usually leads to the formation of heterophase or impurity. Herein, ultra-high Bi-doped CeO 2 nanorods (doping amount up to 20 mol%) without dopant segregation were fabricated by pyrolyzing Bi/Ce bimetallic-organic frameworks (Bi/Ce-BMOFs), and adaptive oxygen vacancies (OVs) were introduced. The Bi-doped CeO 2 not only retains the unique porous structure of Bi/Ce-BMOFs, thus possessing a large specific surface area, but also significantly enhances the visible-light response and promotes the redox cycling of Ce 3+ /Ce 4+ ion pairs, thereby accelerating the efficient activation of H 2 O 2 . Moreover, the adaptive OVs serve as electron-trapping sites, further facilitating the separation of charge carriers. Consequently, the Bi-doped CeO 2 exhibits an excellent photo-Fenton degradation efficiency of tetracycline (TC) over a broad pH range (pH = 2-9). Mechanistic studies revealed that ·O 2 – and ⋅OH are the dominant reactive species. Additionally, the possible degradation pathways of TC were explored using joint characterizations. The ecotoxicity of intermediate products formed during the degradation process was also assessed. This work demonstrates the great potential of the Bi-CeO 2 heterojunction in antibiotic degradation and risk control, providing a feasible strategy for designing efficient and stable catalyst with heteroatom doping derived from BMOFs.
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高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Jundong Yang,Dayu Liang,Xiang Li,Yajun Gao,Wenzhi Wang,Zhimin Lu,Jianlei Qi
Epoxy resin is a widely used thermosetting resin, but its application is limited due to its high brittleness and poor toughness after curing. In this study, we used repolymerized epoxy resin as the matrix and added carboxyl-terminated nitrile rubber (CTBN) and nano-cerium dioxide (n-CeO 2 ) to improve its impact strength without compromising its thermal properties. The test results show that with 15 wt.% CTBN, the tensile strength of the cured product is 60.59 MPa, the flexural strength is 132 MPa, and the impact strength is 22 KJ/m 2 , which are 206%, 200%, and 424% higher than those of pure epoxy resin, respectively. To further enhance the toughening effect, we introduced n-CeO 2 on the basis of 15 wt.% CTBN. The study found that with increasing n-CeO 2 content, the impact strength first increased and then decreased. When the n-CeO 2 content is 2 wt.%, the impact strength of the resin reaches 29.3 KJ/m 2 , which is 32% higher than that of CTBN. Additionally, thermogravimetric analysis (TGA) shows that the addition of n-CeO 2 significantly improves the thermal stability of CTBN/EP composites. Scanning electron microscopy (SEM) analysis reveals that CTBN cavitation occurs in the resin; n-CeO 2 plays a crucial role in particle debonding and crack pinning.
研究领域:
高分子材料
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复合材料科学
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材料化学
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热固性树脂
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功能材料
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高影响因子
Surfaces and Interfaces
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2025
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IF 6.3
Junjie Xue,Xuexin You,Fangwei Lu,Haining Zhang,Bo Gao,Chengrui Xin,Fengyu Li,Baimei Tan,Xinhuan Niu,Simin Li,Fan Zhang,Hui Shen
Surface modification represents one of the most effective methods for tailoring the properties of CeO 2 particles in chemical mechanical polishing. Although numerous studies have demonstrated preliminary evidence that ligand structure plays an important role in determining the performance of modified CeO 2 , fundamental insights into the structure-property relationships between ligand coordination number and polishing performance remain lacking in the literature. By comparing the polishing performance of CeO 2 slurries modified by a series of phosphorus ligands with varying numbers of coordination sites-including H 3 PO 4 , aminotrimethylene phosphonic acid (ATMP), and diethylenetriaminepenta(methylenephosphonic acid) (DTPMP)-we demonstrate that ligands with more chelating sites yield superior modification effects. Specifically, optimal performance in terms of suspension stability, material removal rate, and surface quality was observed for slurries modified with DTPMP. Mechanistic investigation through density functional theory calculations reveals that both the coordination strengths and ligand densities on the CeO 2 surface are correlated with their coordination number, which results in distinct performance characteristics of the prepared slurries. This work not only elucidates the fundamental relationships between ligand coordination number and the polishing performance of CeO 2 slurries but also provides a practical strategy for developing high-performance slurries required for chemical mechanical polishing.
研究领域:
材料科学
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表面化学
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纳米材料
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半导体制造
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胶体与界面化学
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高影响因子
APPLIED SURFACE SCIENCE
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2025
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IF 6.9
Ruichun Nan,Xinxin Zhang,Yuheng Zhao,Hongda Huang,Yapeng Niu,Ying Yan,Litao Zhang,Bingkun Liu,Jingtao Zhang,Xianzhong Yin
Herein, Pd-doped CeO 2 was synthesized by facile hydrothermal methods, X-ray diffraction (XRD) analysis and transmission electron microscope (TEM) suggests that Pd is successfully incorporated into the CeO 2 lattice. X-ray photoelectron spectroscopy (XPS), UV–Vis and PL demonstrated that Pd-doped CeO 2 improve the light absorption and enhance the electron-hole separation of CeO 2 . The prepared Pd-CeO 2 exhibits outstanding bactericidal performance. Specifically, 1 % Pd-CeO 2 can completely inactivate Ralstonia solanacearum with an initial concentration of 2 × 10 7 CFU/mL within 60 min, while also demonstrating effective killing against Escherichia coli and various pathogenic fungi. EPR demonstrated that Pd doping into CeO 2 could increase the number of vacancies, electron spin resonance (ESR) tests demonstrated that e - play a major role in the photocatalytic process, disruption of the cellular structure of E. coli during photocatalytic treatment as evidenced by scanning electron microscopy (SEM) tests. Promising reference for the practical application of precious metal photo catalysts in disinfection.
研究领域:
材料科学
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微生物学
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环境科学
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2023
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IF 22.1
Tian Tang,Lyumeng Ye,Yanrong Chen,Jingyu Xue,Xiaoqiang Shen,Jinfei Chen,Fiona Hammond Quarcoo,Vladislav Rac,Vesna Rakić,Xinbao Li,Xuesen Du
The unique interface synergistic catalytic properties for metal oxide-supported catalysts have long been explored in several critical heterogeneous catalytic processes (e.g., CO oxidation reactions). However, interfacial synergistic catalysis is still a hitherto undescribed mechanism due to the lack of direct evidence at the atomic level. Thereinto, the CuO x -supported CeO 2 (CuO x /CeO 2 ) catalyst is a typical case. Herein, a combination study including representative theoretical calculations, in situ DRIFTS spectra and tailored molecular probe experiments supports a new carbonate-interface mediated Mars-van Krevelen (M−vK) mechanism for CO oxidation, i.e., CO molecules form carbonate intermediate species directly between spatial proximity (2.99 Å) double lattice oxygen sites with low oxygen vacancies formation energy (E form O v = 0.82 eV/0.83 eV) at the copper−ceria interface. The reaction energy barrier of this process is 0.32 eV, much lower than the 1.23 eV of the conventional M−vK mechanism. Besides, the spatial effect of double oxygen vacancies (O v ) generated by the depletion of intermediate carbonate species promotes the sustained and dynamic activation of O 2 , hence facilitating the efficient operation of the M−vK mechanism at low temperatures.
研究领域:
催化化学
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表面科学
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材料化学
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环境催化
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纳米催化
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Linghu Meng,Yuli Zhao,Guiwu Liu,Siwei Liu,Xiangzhao Zhang,Shahid Hussain,Mingyuan Wang,Guanjun Qiao
Real-time, room-temperature nitrogen dioxide (NO 2 ) monitoring is crucial for protecting human health and the environment, yet conventional sensors face limitations on high-temperature operation and external power dependence. Here, we report a self-powered zinc-air battery-driven NO 2 gas sensor based on a multiple grain boundary-engineered CeO 2 (MGB-CeO 2 ) air cathode. Abundant grain boundaries in MGB-CeO 2 promote oxygen vacancy formation, providing more active sites that facilitate NO 2 adsorption and charge transfer. Compared to nanorod CeO 2 (NR-CeO 2 ) sensor, the MGB-CeO 2 sensor achieves a 3.5-fold higher response of 21.2 % to 10 ppm NO 2 , along with shorter response and recovery times. Density functional theory (DFT) calculations confirm significantly higher NO 2 adsorption energy for MGB-CeO 2 than that for NR-CeO 2 , which can be attributed to its defect-rich structure. The MGB-CeO 2 sensor presents outstanding selectivity, low practical limit of detection, and excellent long-term stability. This work provides a novel strategy for the development of self-powered gas sensors, offering valuable insights into electrochemical sensing for practical implications.
研究领域:
材料科学
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环境监测
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电化学传感
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纳米材料
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能源器件
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PubMed
高影响因子
ACS Nano
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2025
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IF 16
Pinwen Zhou,Qi Sun,Longchang Huang,Yufei Xia,Jiaqi Wang,Dongze Mo,Christopher J. Butch,Chenmei Li,Li Zhang,Xuejin Gao,Hui Wei,Xinying Wang
Oral microecological agents show potential in reshaping intestinal microbiota and treating inflammatory bowel disease (IBD), but their clinical application is hindered by gastrointestinal challenges, antioxidant instability, and ineffective targeted delivery. In this study, we proposed a protective modification strategy utilizing a nanozyme coating and an alginate microsphere system to enhance the delivery efficiency, effectiveness, and precision of probiotics. By incorporating Mn into CeO2, Mn@CeO2 nanozyme was synthesized, significantly boosting ROS scavenging activity both in vitro and in vivo at safe dosages. Following the coincubation of Mn@CeO2 with Limosilactobacillus reuteri, the nanozymes were successfully distributed onto the surface of the probiotics. MnCe@LR/AMs were then fabricated using the electrostatic spray method, enhancing their tolerance to the acidic environment of the stomach. Notably, sodium alginate (SA), through electrostatic interactions and binding to mannose receptors highly expressed at inflamed sites, conferred a dual-targeting property to MnCe@LR/AMs. In the treatment of colitis in mice, MnCe@LR/AMs were shown to function through the synergistic antioxidant and anti-inflammatory activities of their components. They also effectively reinforced the intestinal barrier, while improving gut microbial diversity and increasing the relative abundance of probiotics. Furthermore, we demonstrated that MnCe@LR/AMs contribute to the maintenance of intestinal homeostasis by enhancing the absorption of amino acids in the gut and modulating macrophage polarization to regulate the immune response. These findings suggest that MnCe@LR/AMs hold significant promise for developing advanced IBD therapies, offering improved precision and efficacy in probiotic delivery.
研究领域:
纳米技术
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生物医学工程
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胃肠病学
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微生物学
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材料科学
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DOI
PubMed
高影响因子
International Journal of Environmental Research and Public Health
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2019
·Vol. 16
·期 19
·3609
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IF 2.468
Xiaoying Zheng,Yuan Zhang,Wei Chen,Weihong Wang,Hang Xu,Xiaoyao Shao,Mengmeng Yang,Zhi Xu,Linghua Zhu
Due to the increased use of cerium oxide nanoparticles (CeO2NPs), their potential environmental risks have caused concern. However, their effects on the aerobic granular sludge (AGS) process and the later recovery of AGS are still unclear. In this study, we comprehensively determined the changes in pollutant removal and the levels of extracellular polymeric substances (EPS) in AGS that were exposed to CeO2NP treatments (0 (the control, R0), 1 (R1), and 5 (R5) mg/L), following an increase in the influent chemical oxygen demand (COD). An increase in the CeO2NP concentration enhanced their inhibitory effect on the removal of total nitrogen (TN) and total phosphorus (TP), and promoted the production of polysaccharides (PS) and proteins (PN) in loosely bound EPS (LB-EPS) or tightly bound EPS (TB-EPS), as well as the dissolved organic carbon (DOC) components in EPS, but had no long-term effects on the removal of organic matter. When the addition of CeO2NPs was stopped and the concentration of influent COD increased, the TN and TP removal efficiencies in R1 and R5 slowly increased and recovered. In R1, they were only 4.55 ± 0.55% and 2.71 ± 0.58% lower than in R0, respectively, while the corresponding values for R5 were 5.06 ± 0.46% and 6.20 ± 0.63%. Despite the LB-EPS and TB-EPS concentrations in the R1 and R5 treatments recovering and being similar to the levels in the control when no CeO2NPs were added, they were still slightly higher than in the R0, which indicating that the negative effects of CeO2NPs could not be completely eliminated due to the residual CeO2NP levels in AGS.
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高影响因子
Progress in Natural Science-Materials International
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2012
·Vol. 22
·期 4
·265-272
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IF 1.099
Lei Chen,Duan Weng,Zhichun Si,Xiaodong Wu
WO 3 –CeO 2 –TiO 2 catalysts for NO (nitrogen monoxide) reduction by ammonia were prepared by a sol–gel method. The catalysts were characterized by BET, XRD, Raman, NH 3 /NO adsorption and H 2 -TPR to investigate the relationships among the catalyst composition, structure, redox property, acidity and deNO x activity. WO 3 –CeO 2 –TiO 2 catalysts show a high activity in a broad temperature range of 200–480 °C. The low-temperature activity of catalysts is sensitive to the catalyst composition especially under low-O 2 -content atmospheres. It may be related to the synergistic effect between CeO x and WO x in the catalysts. On one hand, the interaction between ceria and tungsten oxide promotes the activation of gaseous oxygen to compensate the lattice oxygen consumed in NH 3 -SCR (selective catalytic reduction) reaction at low temperatures. Meanwhile, the Brønsted acid sites mainly arise from tungsten oxides, Lewis acid sites mainly arise from ceria. Both of the Brønsted and Lewis acid sites facilitate the adsorption of NH 3 on catalysts and improve the stability of the adsorbed ammonia species, which are beneficial to the NH 3 -SCR reaction.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2021
·Vol. 46
·期 43
·22508-22518
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IF 5.816
Zhijun Zhang,Kezhen Chen,Jichang Lu,Qin Zou,Yuhui Zhao,Yongming Luo,Dedong He,Rongtao Li
Sn modified CuO–CeO 2 catalysts with different Sn loadings were prepared by a facile, green and solvent-free method. The effect of Sn/Ce ratio over Sn–Cu–Ce-x (x = 0, 1, 2.5, 5, 7.5) samples on CO activity and O 2 selectivity was investigated. The samples were characterized by various techniques using N 2 -adsorption/desorption, XRD , H 2 -TPR, XPS, Raman and in-situ DRIFTS . It was revealed that stronger interaction between acitve sites and support, higher amounts of Sn 2+ and Ce 3+ , associated with increased amount of oxygen vacancies , were observed on the catalyst of Sn–Cu–Ce-5. As a result, the optimized catalyst displayed an excellent catalytic performance even in the presence of CO 2 and H 2 O. In this sense, probing the Sn modified CuO–CeO 2 catalyst can elucidate some useful keys for the development of high CO 2 and H 2 O-resistance catalyst during CO-preferential oxidation in H 2 -rich streams.
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高影响因子
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