RENEWABLE ENERGY
·
2025
·
IF 9.1
Hongchen Liu,Jinxiu Qian,Fan Yang,JunPu An,Chunhui Yu,Junwei Yuan,Jiahui Liu,Meitong Zhao,Aocheng Wang,Yongfeng Li
Integrating biomass upgrading via electrocatalytic 5-hydroxymethylfurfural oxidation (HMFOR) with the hydrogen evolution reaction (HER) presents a promising strategy to reduce the energy consumption of green hydrogen production while simultaneously generating high-value chemicals. However, the performance and selectivity of electrocatalysts for these reactions still require further improvement. In this work, a CoP-CeO 2 heterostructure nanosheet array supported on nickel foam (CoP-CeO 2 /NF) was developed as an efficient bifunctional electrocatalyst for both HMFOR and HER. The successful construction of the heterointerface was verified through TEM observations, while XPS analysis confirmed interfacial electron transfer from CoP to CeO 2 . This electronic interaction optimizes the adsorption properties of CoP toward key reaction intermediates, and the abundant oxygen vacancies in CeO 2 enhance adsorptive selectivity toward oxygen-containing groups in HMF. As a result, the optimized CoP-CeO 2 /NF drives HMFOR at a low potential of 1.37 V to achieve 200 mA cm −2 in 1.0 M KOH with 100 mM HMF, and further requires only 1.2 V to reach 10 mA cm −2 in a two-electrode system coupled with HER, which is significantly lower than the voltage required for conventional water electrolysis (1.4–1.6 V). Furthermore, by enhancing the adsorption capability for HMF and reaction intermediates, our electrocatalysts effectively mitigate competition from the oxygen evolution reaction (OER) over a broad potential range, particularly at higher voltages, and maintains a Faraday efficiency above 85 % within 1.3–1.6 V. This work provides a compelling approach to designing bifunctional electrocatalysts for energy-saving green hydrogen production integrated with biomass upgrading.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yao Chen,Qingfa Tang,Qinglan Zhu,Meiting Lu,Errong Chang,Ziting Gao,Zidong Wang,Lu Zhang,Qiang Liu,Junju Zou,Zhong Zuo,Chunyan Shen,Cuiping Jiang
Atherosclerosis (AS) is a chronic cardiovascular disease characterized by the accumulation of excess lipids within arterial walls. Since oxidative stress is one of the key drivers in its pathogenesis, antioxidative therapy serves as a promising strategy for AS treatment. Despite the potent antioxidant properties of polyphenolic salvianic acid A (SAA) and salvianolic acid B (SAB), clinical application is limited by their short half-life, insufficient target selectivity, and poor chemical stability. To overcome these limitations, we developed a biomimetic platelet membrane-coated polyphenol–cerium dioxide nanozyme complex (SS-CeO2@PLTM) as a broad-spectrum antioxidative system for comprehensive AS treatment. The SS-CeO2@PLTM was constructed by conjugating SAA and SAB on the surface of cerium dioxide via a one-pot method, followed by surface coating with a biomimetic platelet membrane. Systematic characterization using UV–vis spectroscopy, Fourier transform infrared (FT-IR), X-ray photoelectron spectroscopy (XPS), transmission electron microscopy-energy dispersive X-ray spectroscopy (TEM-EDS) elemental mapping analysis, Forster resonance energy transfer (FRET), molecular simulations, and pH-responsive release assays validated the successful synthesis and pH-responsive drug release behavior of SS-CeO2@PLTM. It was also found that SS-CeO2@PLTM exhibited broad-spectrum antioxidant activities, effectively scavenging superoxide anions, DPPH, H2O2, and intracellular reactive oxygen species (ROS) while enhancing hepatic SOD and GSH activities. Further cellular uptake and in vivo targeting assays confirmed their specific targeting for atherosclerotic plaques. SS-CeO2@PLTM demonstrated great efficiency in attenuating oxidative stress, inhibiting lipid uptake and lipid accumulation, mediating cholesterol efflux, and inhibiting inflammatory factor (IL-1β, IL-6, and TNF-α) secretion in RAW264.7 cells. We also found that SS-CeO2@PLTM exhibited improved lipid metabolism and diminished plaque area in apoE–/– mice via attenuating oxidative stress and NF-κB-mediated inflammation. Furthermore, biosafety was verified via hemolysis and in vivo safety tests. This study is the first to reveal the superior efficacy of the PLTM-based nanozyme complex in targeted AS therapy, offering a paradigm shift for multifactorial cardiovascular disease management.
研究领域:
纳米医学
·
心血管疾病
·
药物纳米技术
·
抗氧化治疗
·
仿生学
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2026
·
IF 8.3
Fei Wang,Shule Liu,Jianfeng Lu,Yukun Hu,Jing Ding,Weilong Wang
Dry reforming of methane (DRM) has emerged as an efficient approach to reducing greenhouse gas emissions while producing key industrial feedstocks. However, the industrial deployment of DRM has been impeded by severe challenges in conventional thermal catalysis, particularly carbon deposition and competing side reactions. Herein, we report 1.0 % RuO 2 /CeO 2 as a highly effective anti-coke catalyst that achieves remarkable yields of H 2 (∼292.3 mmolg cat −1 h −1 ) and CO (∼350.4 mmolg cat −1 h −1 ). This catalyst shows stable performance over 100 h under simulated solar irradiation at 650 °C with negligible carbon deposition. Notably, the integration of photothermal synergistic catalysis not only lowers the operating temperature required for CO 2 and CH 4 conversion but also suppresses competing side reactions, resulting in a ∼40 % higher syngas yield compared to pure thermal conditions. The integration of in situ infrared spectroscopic analysis with theoretical modeling demonstrates that photothermal synergy enhances the activation of CH 4 identified as the rate-limiting step, as well as the selective oxidation of the CH 3 * intermediate to CH 3 O* without the formation of coke. This synergetic effect is believed to be responsible for the catalyst's excellent stability over extended operation. This study provides new ideas for the industrial utilization of carbon resources at high value.
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Shidong Zheng,Yufei Shu,Chaoqun Zhu,Beizhao Chen,Youmei Xu,Weiwen Chen,Mengxia Wang,Siyu Cao,Zhipeng Liu,Fan Wang,Yunjiao Han,Zhongying Wang
Effective defluoridation remains a pressing challenge in water purification, particularly in complex water matrices. Cerium dioxide (CeO 2 ) is a promising fluoride adsorbent due to its tunable oxygen-deficient structure and high surface reactivity. However, the underlying mechanisms by which oxygen vacancies (V o ) and surface functionalities cooperatively influence fluoride adsorption remain unclear. Herein, a series of Fe-doped CeO 2 (Fe-CeO 2 ) materials were synthesized to systematically explore the role of Fe-induced V o in enhancing defluoridation performance. Among them, the 9 % Fe-CeO 2 sample exhibited the highest adsorption capacity (43.70 mg/g), achieving a 10.22 % increase over pristine CeO 2 and outperforming multiple benchmark adsorbents in both capacity and kinetics. Spectroscopic characterizations (XRD, XPS, FTIR, Raman) and density functional theory (DFT) calculations revealed a critical balance: moderate Vₒ concentrations not only provided direct adsorption sites but also facilitated hydroxyl group (–OH) formation, both essential for fluoride capture. However, excessive V o concentrations led to surface lattice reconstruction and suppressed –OH generation, resulting in a U-shaped relationship between V o content and adsorption performance. The material also demonstrated high stability under extreme pH conditions, strong selectivity in the presence of co-existing anions, excellent reusability over five adsorption-desorption cycles, and effective fluoride removal (< 1.0 mg/L) under environmentally relevant conditions. These findings offer mechanistic insight into defect engineering and highlight the potential of Fe-CeO 2 as a robust adsorbent for practical water defluoridation applications.
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2017
·
IF 4.798
Xiaoxue Li,Zixuan Liu,Long Song,Deyu Wang,Zhipan Zhang
An efficient oxygen reduction reaction (ORR) on the air cathode is a prerequisite for high-performance metal-air batteries (MABs), as it decreases the excessive charge-discharge overpotential to reduce side-reactions. Here, we develop a composite catalyst for MABs by loading ultrathin CeO 2 nanoflakes (UCNFs) on a three-dimensional graphene (3DG) network to form the UCNFs@3DG. The UCNFs@3DG composite features a high activity approaching the commercial Pt/C catalyst in the ORR, probably due to synergic effects of the catalytically active UCNFs and the conductive 3DG network. The UCNFs@3DG can serve as an efficient air cathode in a series of MABs, delivering a capacity of 613 mAh h g Zn −1 in the Zn-air battery (ZAB) and 839 mAh h g Al −1 in the Al-air battery (AAB), respectively. Finally, the UCNFs@3DG cathode in lithium-oxygen batteries (LOBs) achieves a high discharge capacity of 21,166 mAh h g c −1 at 0.2 A g c −1 and over 15,000 mAh h g c −1 under elevated current densities up to 2 A g c −1 , validating the UCNFs@3DG as a general air cathode in MABs.
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·Vol. 49
·期 21
·34025-34037
·
IF 5.2
Dianchao Liu,Yongzhi Jing,Xiufang Cui,Zhuo Chen,Xinhe Wang,Yongchao Fang,Anying Liu,Guo Jin,Erbao Liu
The phase instability of 6–8 wt% Y 2 O 3 partially stabilized ZrO 2 (YSZ) in high temperature and molten salt corrosion environment seriously limits its application above 1200 °C. In this study, the chemical co-precipitation method prepared Yb 2 O 3 and CeO 2 co-doping YSZ (YbCeYSZ) ceramic materials to improve the above issues. It was proposed to improve the defect of high-temperature phase instability of CeO 2 -doped YSZ materials by adding Yb 2 O 3 . The phase stability, thermal insulation properties , and Na 2 SO 4 + V 2 O 5 molten salt corrosion behavior of YbCeYSZ ceramic materials were studied. The results showed that 2.5 mol% Yb 2 O 3 -4 mol% CeO 2 -YSZ material (2.5Yb4CeYSZ) had no monoclinic phase (m-ZrO 2 ) after holding at 1500 °C for 120 h due to forming more defect clusters in the system. Meanwhile, the 2.5Yb4CeYSZ had excellent thermal insulation performance and molten salt corrosion resistance , which was attributed to the strong phonon scattering in the 2.5Yb4CeYSZ material system and the low reactivity between the stabilizer and the corrosive salt.
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DOI
高影响因子
JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2019
·Vol. 94
·期 5
·1576-1584
·
IF 2.659
Weijie Wen,Zhencheng Lou,Yanjin Chen,Dingsheng Chen,Shuanghong Tian,Ya Xiong
BACKGROUND Iron (Fe) 3+ has much a smaller ion radius than cerium (Ce) 4+ but praseodymium (Pr) ions have a similar radius to Ce ions with the same valence. Hence, it is interesting to tune the structural properties, including lattice deformation, band gap and oxygen vacancy (O v ), of CeO 2 by Pr and Fe codoping for enhanced visible-light catalytic activity. RESULTS A series of Ce 1-x-y Pr x Fe y O 2-σ ( x = 0∼0.012, y = 0.003∼0.031) nanoparticles were prepared by a simple one-step sol-gel method. The structural properties of CeO 2 , including crystal deformation (cell lattice from 5.4069 to 5.4195), band gap (from 2.20 to 2.93), oxygen vacancies (O v from 0.15% to 9.03%), and peroxide species (O 2 2− from 0.37% to 1.09%) can be finely tuned by Pr and Fe codoping. Among ten samples, Ce 0.982 Pr 0.003 Fe 0.015 O 2-σ with proper structural properties showed the highest photocatalytic activity towards the degradation of acid orange 7. The first reaction rate constant reaches 0.0687 min −1 , 9.3 and 7.7 times that of Ce 0.994 Pr 0.006 O 2-σ and Ce 0.985 Fe 0.015 O 2-σ , respectively. The mechanism was found to involve ·OH, ·O 2 − and photogenerated holes. CONCLUSION The structural properties of CeO 2 can be finely and easily tuned by Pr and Fe codoping. Thus, the photocatalytic activity of CeO 2 under visible light irradiation was boosted. © 2019 Society of Chemical Industry
研究领域:
材料科学
·
光催化
·
纳米材料
·
环境化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Quan Huo,Gongquan Liu,Haihui Sun,Yanfei Fu,Yao Ning,Boyu Zhang,Xubiao Zhang,Jing Gao,Jiarun Miao,Xiaolin Zhang,Suyan Liu
CeO 2 /MIL-101(Fe) catalysts for a photocatalysis-extraction oxidation desulfurization (PEODS) system were designed by introducing different amounts of CeO 2 into MIL-101(Fe). And, the materials were further analyzed via some characterization technologies. Moreover, an optimization system, composed of CeO 2 /MIL-101(Fe), extractant acetonitrile and oxidant H 2 O 2 , was selected to remove dibenzothiophene (DBT) from model oil under visible-light irradiation. Evaluation results illustrated that 90% of DBT in oil phase was able to be transformed within 2 h as the adding amount of CeO 2 , the volume ratio of model oil to acetonitrile and the molar ratio of H 2 O 2 to DBT was 60 mg, 2:1 and 3:1, respectively. Radical scavenger experiments verified that · OH and · O 2 – were main reactive species in the process. The high photocatalytic activity was originated from a synergic effect produced between active sites of CeO 2 and active surface of MIL-101(Fe) and formed heterostructure in the catalyst, which broadened optical response ranges and facilitated photoinduced charge separations and transfers. Additionally, a convinced PEODS mechanism was proposed and rationalized.
研究领域:
环境化学
·
材料科学
·
催化化学
·
能源工程
·
石油炼制
·
光化学
·
纳米材料
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DOI
高影响因子
ACS Applied Nano Materials
·
2026
·Vol. 9
·期 31
·14718-14729
·
IF 5.8
Wang Yizhou,Cao Jianxin,Yao Mengqin,Li Ziwei,Li Zhuxuan,Liu Fei
The
current reaction mechanism of cerium dioxide (CeO 2 ) catalyzing
the direct synthesis of dimethyl carbonate (DMC) from
carbon dioxide (CO 2 ) and methanol remains unclear. In this
study, we prepared hollow nanospheres of CeO 2 with different
shell thicknesses (CeO 2 –S– x h) by controlling the Ostwald ripening time to investigate the role
of surface hydroxyl groups in the catalytic process. Among these,
the DMC formation rate of CeO 2 –S–24 h was
20.6 mmol g cat –1 h –1 , which is
1.5 times that of CeO 2 –S–4 h. Combining X-ray
photoelectron spectroscopy (XPS) etching and in situ Fourier-transform
infrared spectroscopy (FTIR) analysis, we found that an appropriate
shell thickness can effectively suppress the inhibition of hydroxyl
group conversion caused by oxygen vacancy (Vo) migration, thereby
promoting the transformation of monomethyl carbonate (MMC) to methoxycarbonyl
(MC) and enhancing the DMC formation rate. This study provides insights
into the structural design of CeO 2 -based catalytic materials
and reveals the critical role of surface hydroxyl groups in the synthesis
of DMC.
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DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Lin-Cong He,Xu-Fang Wang,Chu-Feng Liu,Bei Li,Meng-Fei Luo,Jian Chen
An efficient MnO x /CeO 2 /ZSM-5 catalyst was developed for selective oxidation of diethylamine (DEA) with high N 2 selectivity in a wide temperature window ( Δ T = 140 °C), owing to the existence of oxidation and selective catalytic reduction (SCR) active sites. MnO x species prefer to locate on the surface of CeO 2 compared to ZSM-5, and the presence of CeO 2 is beneficial to form more Mn 4+ species, the active sites for oxidation reaction. The mechanistic investigation suggests that internal SCR of NO x generated from the over-oxidized DEA is the crucial pathway for N 2 generation. The high SCR activity of the MnO x /CeO 2 /ZSM-5 catalyst in oxidation conditions is mainly attributed to the synergistic catalysis of Mn 4+ species and acid sites of ZSM-5, the active sites for SCR reaction. Thus, it has been clearly clarified that addition of CeO 2 and its addition sequence could modulate the surface active sites of MnO x /ZSM-5 catalyst for the selective catalytic oxidation of DEA.
研究领域:
环境科学
·
催化化学
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DOI
高影响因子
Analytical Methods
·
2014
·Vol. 6
·期 23
·9228-9233
·
IF 1.938
Fen-fang Deng,Cong Ding,Yu Wang,Wen-ting Li,Li-li Liu,He Li
Samarium doped cerium dioxide (CSO) nanostructures possessing a shell-like morphology were synthesised by a simple hydrothermal method. A novel nanocomposite membrane, comprising of CSO nanostructures, chitosan (CH) and a room temperature ionic liquid (RTIL) was deposited onto an indium-tin oxide (ITO) electrode for developing a DNA biosensor related to the breast cancer gene. The properties of the CSO and nano-composite membrane were studied by thermogravimetry (TG), X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The hybridization capacity of the DNA biosensor was studied by differential pulse voltammetry (DPV) using [Fe(CN)6]3−/4− as an indicator. Under optimal conditions, the fabricated DNA biosensor could quantify a wide range of target DNA concentrations over the range of 1 × 10−13 to 1 × 10−6 M with good linearity (R = 0.9981) and a low detection limit of 1.56 × 10−14 M (3σ). Results showed that the fabricated shell-like CSO nanostructures and RTIL could enhance the electrical conductivity synergistically, which has great potential application in sensitive electrochemical biosensors.
研究领域:
材料科学
·
生物化学
·
电化学
·
癌症诊断
·
纳米技术
✓ 已验证
DOI
高影响因子
RARE METALS
·
2026
·Vol. 45
·期 6
·e70235
·
IF 12.1
Zhiqiang Sun,Xiaofan Ye,Zengkai Ji,Bei Li,Hao Wu,Shengxi Zhao,Yan Shang,Shiyang Fei,Yujie Ma,Qian Zhang,Shuijian He
en This link goes to a English section zh This link goes to a Chinese section Engineering of the catalyst interface and modulation of transition–metal d–band play critical roles in the electrocatalytic hydrogen evolution reaction (HER). Herein, a synthetic strategy is developed to fabricate nitrogen-doped carbon nanotubes (N–CNTs)–supported Ni 3 Se 4 –CeO 2 heterojunction catalysts through a facile chemical vapor deposition (CVD) process coupled with selenization. The heterojunction catalysts show excellent catalytic activity and stability for HER. Density functional theory (DFT) calculations reveal that Se modifies the electronic structure of Ni, CeO 2 regulates the interfacial charge distribution, and a multi–orbital coupling effect arises among the components. These synergistic effects collectively elevate the d–band center, thereby optimizing the free energy of the key adsorbed hydrogen intermediate (Δ G H* ) in HER. Benefiting from the synergies between interface engineering and multi–orbital hybridization, the optimized Ni 3 Se 4 –CeO 2 heterojunction delivers a low overpotential of 180 mV at 100 mA cm −2 , with a Tafel slope of 83.6 mV dec −1 . The N–CNTs substrate further reduces charge–transfer resistance, thus promoting HER performance. Moreover, the confinement effect provided by cellulose acetate (CA) and the hydrogen–bonding network formed within the cotton substrate ensure outstanding long–term durability, as evidenced by sustained catalytic activity after 100 h of continuous operation at 100 mA cm −2 . This work will offer a promising pathway toward the development of efficient heterojunction catalysts for HER via modulation of their electronic structure and interface. 摘要 en This link goes to a English section zh This link goes to a Chinese section 在电催化析氢反应(HER)中,界面工程以及过渡金属 d 带的调节发挥着关键作用。因此,我们开发了一种合成策略,通过简便的化学气相沉积过程(CVD)结合硒化,制备了氮掺杂碳纳米管(N–CNTs)负载的 Ni 3 Se 4 –CeO 2 异质结催化剂。这种异质结催化剂表现出优秀的HER活性和稳定性。密度泛函理论(DFT)计算表明,硒改变了镍的电子结构,CeO 2 使界面电荷重新分布,各成分之间产生了多轨道耦合效应。这些协同效应共同使d带中心上移,从而优化了HER中关键吸附氢中间体的自由能(Δ G H* )。得益于界面工程和多轨道杂化的协同作用,优化后的 Ni 3 Se 4 –CeO 2 异质结催化剂在 100 mA cm –2 下,过电位仅为180 mV,并且 Tafel 斜率为 83.6 mV dec –1 。N–CNTs基底进一步降低了电荷转移电阻( R ct ),从而提高了 HER 性能。此外,醋酸纤维素(CA)所提供的限域效应以及与棉基底形成的氢键网络保证了其稳定性。这一点从在 100 mA cm –2 的电流强度下连续运行 100 小时后仍保持稳定的催化活性中得到了证明。这项工作将为通过调节其电子结构和界面来开发高效的析氢反应(HER)异质结催化剂提供一条有前景的途径。
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DOI
高影响因子
危险品化学品经营许可证（带存储）