CERAMICS INTERNATIONAL
·
2026
·
IF 6
Hang Liu,Runkang Lv,Jinkai Zhang,Mingzhe Cui,Yuhong Zhang
Here, Ce-ZnSnO 3 nanocubes were synthesized via a simple one-step hydrothermal method. The gas-sensing performance toward acetone was investigated in terms of response, optimum operating temperature, response-recovery time and selectivity. The as-prepared 1% Ce-ZnSnO 3 nanocubes exhibit a high response of up to 215 toward 100 ppm acetone, with excellent selectivity toward acetone over other reducing gases, and also deliver outstanding response even under high humidity conditions. At 260 °C, this sample shows a fast response time of 2 s and recovery time of 1 s, while its optimum operating temperature is reduced by 40 °C. This study validates an effective strategy for enhancing the gas-sensing performance of ZnSnO 3 -based sensors through Ce modification.
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DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2017
·
IF 2.446
Dangge Gao,Leihong Lyu,Bin Lyu,Jianzhong Ma,Lintao Yang,Jing Zhang
Ce doped ZnO (Ce-ZnO) nano materials with different Ce molar content were prepared via chemical precipitation method. The morphology of Ce-ZnO was rod like and the size was decreased with the increase of doping amount, and the size of Ce-ZnO was 180 nm in length and 40 nm in diameter when the doping amount is 2.5%. All the samples were treated on cotton fabric, the laden fabric has excellent performance on hydrophobicity, UV resistance and antibacterial activity. The contact angle of fabric loaded with ZnO was 103°, and fabric with 2.5% Ce-ZnO was 148°. The fabric loaded with Ce-ZnO has superior performance of UV resistance. With the increase of doping amount, the antibacterial rates were promoted and then reduced, the antibacterial rates against S. aureus and C. albicans of fabric with 2.5% Ce-ZnO were promoted to 83% and 85%, however, the antibacterial activity against E. coil was reduced to 78%.
研究领域:
材料科学
·
纳米技术
·
纺织工程
·
功能材料
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DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2021
·
IF 2.495
Ziqi Zhang,Yan Zhang,Siqi Zhang,Kaida Yao,Yueqiu Sun,Yang Liu,Xiangzhi Wang,Weimin Huang
Although titanium (Ti) and its alloys are the most widely used biomedical implant materials in the world today due to their satisfactory mechanical strength, high corrosion resistance and neglecting cellular toxicity, implant failures still occur because of poor osseointegration and bacterial infection. Thus in this paper we synthesized an new Ce doped MIL metal-orgainc framework derivant and used it as an anti-bacterial and anti-corrosion additive coating on titanium with hydroxyapatite by electrochemical in situ deposition technique. The experimental results demonstrated that the MOF-hydroxyapatite composite coating can increase the corrosion resistance and antibacterial property of titanium without destroying its original biocompatibility.
研究领域:
材料科学
·
生物医学工程
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DOI
高影响因子
Journal of Nanomaterials
·
2017
·
IF 1.871
Ke Yang,Weiwei Xiao,Quan Xu,Jiaojiao Bai,Yan Luo,Hao Guo,Li Cao,Wei Cai,Peng Pu,Lulu Cai
Typical p-type semiconductor MnO codoped with n-type semiconductors such as CeO2 and V2O5 was reported to achieve high efficiency in catalytic NO removal by NH3. In this paper, we present novel Mn-Ce codoped V2O5/TiO2 catalyst which exhibited an excellent NO conversion efficiency of 90% at 140°C. By using this codoped catalyst, the best low-temperature activity was greatly decreased when compared with single Mn- or Ce-doped catalyst. According to the characterization results from BET, XRD, and XPS, the codoped catalyst was composed of both CeO2 and amorphous Mn. The electron circulation formed between doping elements is believed to promote the electron transfer, which may be one of the reasons for excellent low-temperature denitration performance.
研究领域:
环境科学
·
催化化学
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DOI
高影响因子
Advanced Energy Materials
·
2024
·
IF 24.4
Yanyan Zhang,Guangtong Hai,Zhuoshen Huang,Zhimeng Liu,Xiubing Huang,Ge Wang
Electrocatalytic oxidation of 5-hydroxymethylfurfural (HMFOR) is an effective route to produce value-added chemicals with low energy consumption. In this work, efficient electrocatalysts are prepared by varying the amount of Ce doping and CeO 2 modification on NiFe layered double hydroxide (NiFe–LDH) nanosheets supported on carbon cloth (CC). Through Ce doping and heterogeneous interface construction, the electronic structure and coordination chemistry of NiFe–LDH are greatly changed. Compared to CeO 2 modification and the synergistic effect of Ce-doping and CeO 2 modification, CC@NiFeCe(3%)-LDH with only Ce-doping show excellent charge transfer ability, higher HMF conversion (95.73%), 2,5-furandicarboxylic acid (FDCA) selectivity (93.31%), and Faraday efficiency (99.47%) at only 1.44 V RHE . Density-functional theory calculations and X-ray fine structure spectroscopy demonstrate that Ce doping, compared with CeO 2 modification and their synergistic effects, significantly facilitates the electron transport and optimizes intermediate adsorption by effectively lowering the activation energy for the transformation of 5-formyl-2-furancarboxylic acid (FFCA) and encourage the conversion of FFCA to FDCA. Overall, this work systemically investigates the HMFOR behaviors of CC@NiFe–LDH under Ce doping, CeO 2 modification, and their synergetic effect, which provides some guidance on the development of high-performance electrocatalysts for HMFOR performance.
研究领域:
材料科学
·
催化化学
·
能源化学
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产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2024
·
IF 6.2
Xinyu Ping,Bin Meng,Weixin Zeng,Ziran Chai,Zhengteng Wang,Xiaoyu Pan
Three new rare-earth high-entropy oxides with compositions of (Y 1/7 La 1/7 Nd 1/7 Sm 1/7 Gd 1/7 Yb 1/7 Lu 1/7 ) 2 O 3 (7HEO), (Y 1/8 La 1/8 Nd 1/8 Sm 1/8 Gd 1/8 Yb 1/8 Lu 1/8 Ce 1/8 ) 2 O 3 (8HEO) and (Y 1/10 La 1/10 Nd 1/10 Sm 1/10 Gd 1/10 Yb 1/10 Lu 1/10 Ce 1/10 Zr 1/10 Hf 1/10 ) 2 O 3 (10HEO) were prepared using a solid-state reaction method combined with conventional sintering at 1600 ° C for 10 h 7HEO has a monoclinic structure. The addition of Ce into 7HEO not only leads to the phase transformation from monoclinic to bixbyite structure, but also contributes to the grain refinement. When the three elements of Ce, Zr and Hf are added into 7HEO, a second fluorite-structured phase forms and further promotes the grain refinement. 10HEO and 8HEO have a higher thermal conductivity compared with 7HEO in 25–600 °C. When the temperature reaches 900 ° C, the thermal conductivity of 8HEO is lower than that of 7HEO. The addition of Ce or Ce/Zr/Hf into 7HEO causes the weakening of the bond strength and the increase of the bond length of cation-O 2- in the samples, which in turn increases the thermal expansion coefficient. Moreover, 7HEO possesses a better oxygen barrier property compared with 8HEO and 10HEO. The hardness and Young's modulus of 7HEO are lower than those of 8HEO and 10HEO.
研究领域:
材料科学
·
无机化学
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产品关联
DOI
高影响因子
e-Journal of Surface Science and Nanotechnology
·
2016
·
IF 0
T. Wei,L. Z. Pei,N. Lin
Ce doped germanium dioxide nanowires with cubic GeO2 and tetragonal CeGeO4 phases have been synthesized by the hydrothermal route using sodium dodecyl sulfate (SDS) as the surfactant. The nanowires have the length and diameter of about 20 μm and 50–200 nm, respectively. The SDS assisted growth process is proposed to explain the formation of the Ce doped germanium dioxide nanowires. Ce doped germanium dioxide nanowires is used as the photocatalyst for the photocatalytic degradation of gentian violet (GV) under solar light irradiation. The roles of the solar light irradiation time, content of the nanowires and GV concentration on the photocatalytic degradation of GV are investigated. GV can be totally degraded under solar light irradiation for 240 min using 15 mg nanowires in 10 mL GV solution with the concentration of 10 mg · L−1. The Ce doped germanium dioixde nanowires show good application potential for the removal of organic pollutants under solar light irradiation. [DOI: 10.1380/ejssnt.2016.4]
研究领域:
材料科学
·
环境科学
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DOI
CERAMICS INTERNATIONAL
·
2019
·Vol. 46
·期 2
·1569-1576
·
IF 3.45
Tengchao Guo,Shujuan Tan,Guoyue Xu,Jinghan Ma,Xinyuan Liu,Guangbin Ji,Guosheng Liu,Yunfei He,Songtao Zhang
The low infrared emissivity materials with good high-temperature properties remain a challenge for the infrared stealth of hot targets in 3–5 μm waveband. To further decrease the infrared emissivity of ZnO, the Ce-doped ZnO nanoparticles were prepared by a facile sol-gel method and the infrared emissivity properties in 3~5 μm waveband in high temperature conditions were deeply investigated by doping different concentration of Ce in ZnO. The influences of Ce dopant concentration on the microstructure, morphology, conductivity, lattice vibration and high-temperature infrared emissivity properties of Ce-doped ZnO were systematically studied, as well as the detailed analysis of temperature-dependent infrared emissivity properties through the conductivity and lattice vibration based on the theory of solid state physics . When the Ce dopant concentration is 3%, the infrared emissivity of Ce-doped ZnO decreases dramatically from room temperature to 800 °C in comparison with undoped ZnO and reaches the lowest value of 0.329 at 500 °C. It is indicated that the excess doping of Ce would produce an impurity phase of CeO 2 in the crystal, therefore decreases the conductivity, and causes extra lattice vibration in infrared region , and results in the increase of infrared emissivity. The infrared emissivity versus temperature exhibits a “U” type curve, which is caused by the competition effects of the conductivity and lattice vibration at elevated temperature.
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CHEMICAL ENGINEERING SCIENCE
·
2020
·
IF 3.871
Xianhua Zhang,Yinghui Su,Chunlei Pei,Zhi-Jian Zhao,Rui Liu,Jinlong Gong
Chemical looping steam reforming of methane (CL-SRM) has emerged as an attractive pathway on H 2 O splitting for H 2 production. However, this process still faces a major challenge in efficiently producing H 2 with high redox kinetics and yields. In this paper, the promoting effects of Ce 3+ substitution into LaFeO 3 redox catalysts on thermochemical H 2 O splitting as well as partial oxidation of methane are presented. An appropriate amount of Ce 3+ substitution in A site of LaFeO 3 (La 0.5 Ce 0.5 FeO 3 ) promotes the lattice oxygen conversion rate in methane partial oxidation step and boosts the reaction kinetics in H 2 O splitting step by enhancing the surface water activation and lattice oxygen mobility of the perovskite. In the CL-SRM process, the perovskite is reduced into Fe 0 /(La 0.5 Ce 0.5 ) 2 O 3 and Fe 0 /(La 0.5 Ce 0.5 )O 2- x phases in methane partial oxidation step and recovered to the original perovskite structure in H 2 O splitting step with simultaneous production of hydrogen, which maintains a reversible phase transformation during 100 redox cycles. As a result, the La 0.5 Ce 0.5 FeO 3 achieves high stability with the superior performance for syngas and hydrogen production. These findings provide the fundamental understanding on the synergy between the catalytic sites and enhanced lattice oxygen mobility for the promotion of H 2 O activation and hydrogen productivity in chemical looping process.
研究领域:
化学工程
·
材料科学
·
能源科学
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DOI
高影响因子
Materials
·
2026
·Vol. 19
·期 17
·3574
·
IF 3.7
Yuetong Zhen,Hui Lin,Yang Tang,Junwei Zhang,Yuchong Ding,Qiang Wang,Dawei Zhang,Jianren Xu
Ce3+-activated Gd3(Al,Ga)5O12:Ce scintillation ceramics have been widely studied due to their excellent scintillation properties. However, the relatively long radiative lifetime and slow decay components limit their applications in X-ray imaging. To address these issues, Lu3+ions were introduced to partially substitute Gd3+ions, thereby weakening the role of self-trapped states in the excitation process of Ce3+and reducing the negative effects caused by shallow electron traps. As a result, the scintillation decay time was, overall, shortened, and an average decay time of 63 ns was obtained when x = 0.997. Meanwhile, the afterglow behavior induced by shallow electron traps was significantly suppressed (for the sample with x = 0.5, the afterglow intensity was measured to be approximately 0.48% of the initial intensity at 100 ms after the X-ray excitation was turned off). Meanwhile, an X-ray imaging spatial resolution comparable to that of commercial CsI:Tl (10 lp mm−1) was achieved for the (Gd,Lu)3Ga2Al3O12:Ce3+scintillation ceramics.
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产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 6
Hang Teng,Chunmiao Liu,Zhiguo Tao,Haibin Sun,Qiangqiang Hu,Hongyu Gong,Hongli Zhu,Yurun Feng,Hui Peng,Xue Guo
Driven by the continuous advancement of radar technology and the intensifying electromagnetic radiation in daily scenarios, the performance specifications of multifunctional electromagnetic wave (EMW) absorbing materials are progressively elevated. Despite remarkable progress having been achieved in contemporary research on EMW absorbing materials, the SiCN-based material system still faces challenges in reconciling high attenuation capability with broadband absorption performance. In this work, Ce-doped SiCN(Ce) ceramic fibers were successfully fabricated by doping Ce into the SiCN precursor, and the EMW absorption properties of the low-temperature pyrolyzed samples (700°C-900 °C) were systematically investigated. The results demonstrate that the minimum reflection loss ( RL min ) of SiCN(Ce) fibers pyrolyzed at 800 °C reaches −50.2 dB at a thickness of 1.74 mm, and achieves an effective absorption bandwidth (EAB) of 5.2 GHz at a thickness of 1.7 mm. Furthermore, the materials exhibit outstanding stealth performance over a wide range of incident angles. In view of the above superior performance, we integrated the material with a microstrip antenna to design a stealth antenna with low radar cross section (RCS). At 16.11 GHz, the antenna produces a 21.2 dBsm attenuation of RCS. This work elucidates the electromagnetic parameter regulation mechanism induced by the synergistic effect of low-temperature pyrolysis and Ce doping, thus offering new strategies for the design and application of novel stealth materials and devices.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2026
·
IF 5.9
Tianchi Zhang,Yaoting Wen,Chenglong Xia,Xuhui Xu,Guoping Wang,Yongcai Zhang
Developing efficient, recyclable heterogeneous catalysts for the oxidation of p-methoxytoluene (p-MT) remains a critical challenge in industrial organic synthesis. Herein, a ternary Co-Mn-Ce oxide catalyst was synthesized via co-precipitation and systematically optimized to address limitations in mass transfer and catalyst reusability. By modulating the Ce content, the structural evolution from cobalt‑manganese spinel phases to CeO 2 -dominated crystallites was demonstrated, significantly influencing catalytic performance. The CoMn 3 Ce 1.9 catalyst with high Ce loading exhibited a p-MT conversion of 95.0% under mild conditions, outperforming the low-Ce analogs, which showed only 50–60% p-MT conversion. Characterization revealed that CeO 2 -rich catalysts featured larger average pore sizes (18 nm vs. 2–4 nm for spinel-dominated systems), mitigating diffusion constraints and enhancing oxygen activation. High-concentration experiments (8 mL p-MT) maintained 77.7% conversion after 12 h, but with increased esterification to p-methoxybenzyl acetate (p-MBAc). Remarkably, the catalyst retained >70% activity over four runs. This work highlights the optimized pore architecture in overcoming traditional limitations of spinel-based catalysts, offering a sustainable, scalable strategy for aromatic aldehyde synthesis. The findings provide critical insights into designing multifunctional heterogeneous catalysts for selective C(sp 3 )-H bond activation, with broad implications for green chemical manufacturing.
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高影响因子
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