Applied Materials Today
·
2025
·
IF 6.9
Chenyang Cai,Ming Zhou,Shuai Cheng,Jiabin Cai,Meiling Chen,Liping Cai,Qinbo Peng,Guangyao Yang,Xiaoyan Wen,Qian Wang
Formaldehyde (HCHO) release is a long process due to indoor decoration and furniture, which poses a serious threat to human health. Yet it is still a great challenge to remove formaldehyde efficiently at room temperature for a long time. Herein, inspired by porous lotus seedpods, cerium-doped manganese-based catalysts supported on diatomaceous earth (MnXCeY-DM) with high efficiency for formaldehyde removal were successfully prepared by co-precipitation and coordination complexation processes. The results showed that the transition metal oxides on the surfaces of both catalysts before and after doping with Ce were not highly crystalline and well-dispersed. The introduction of Ce reduced the agglomeration of the excessive metal oxides on the surfaces. Noteworthy, Ce doping can bring larger porosity, specific surface area, and more nano effects, which can accelerate the oxidative breakdown of formaldehyde. The absorption and reaction efficiency of the Mn20Ce5-DM catalyst reached 100% for 12 h at an HCHO concentration of 2 mg/m 3 at room temperature, which was 4.67% higher than that of the Ce-undoped catalyst. The final removal efficiency of Mn20Ce5-DM reached 78.05% even after five cycles. At room temperature, diatomaceous earth (DM) has a strong adsorption function, and the addition of Ce element promotes the oxidation process of HCHO, which strengthens the synergistic effect of the decomposition of HCHO. This research provides an excellent strategy to improve the HCHO degradation efficiency and persistence of manganese-based catalysts at room temperature.
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JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Jiaqi Wang,Yuqing Zhang,Ying Wang,Shuai Sun
To efficiently clean oily wastewater with the linear anion polyacrylamide (APAM), selective adsorption strategy belonging to phase equilibrium separation is introduced into the membrane separation . Herein, bimetallic Ce-UiO-66-NH 2 /diatomite (CUD) were first synthesized by a one-step hydrothermal method and then employed as a functional layer to form CUD self-assembled membrane (CSA-membrane). CUD particles were characterized by FT-IR, XRD and SEM, and CSA-membrane was observed by SEM. The separation and the selective adsorption properties of CSA-membrane formed under the optimum conditions for APAM in oily wastewater were investigated. The results demonstrate that the size of CUD particles with proper sphericity is mainly 20 μm. Furthermore, CSA-membrane simultaneously exhibits fascinating separation and selective adsorption properties for cleaning oily wastewater, namely the concentration of oil decreases from 78.1 mg L -1 to 6.8 mg L -1 , and flux of CSA-membrane reaches 789.5 L m -2 h -1 . Remarkably, the adsorption capacity of CSA-membrane for APAM is 161.5 mg g -1 , while showing the APAM removal rate of 51.3%. Therefore, CSA-membrane with the synergetic effect of phase equilibrium and rate separation is promising alternative for cleaning oily wastewater with APAM.
研究领域:
环境科学
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材料科学
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Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 38
·20350-20364
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IF 14.511
Zhishan Li,Meilan Peng,Yinlong Zhu,Zhiwei Hu,Chih-Wen Pao,Yu-Chung Chang,Yifan Zhang,Yingru Zhao,Jianhui Li,Yifei Sun
A high temperature solid oxide electrolysis cell is recognized as a promising technology for CO2 conversion (CO2-SOEC). The development of alternative cathode materials substituting conventional Ni/YSZ is a great challenge for SOECs, on which multi-step elementary reactions (e.g., adsorption of CO2, conversion of reaction intermediates, and desorption of CO) occur in succession. Herein, the Ce decorated La0.43Ca0.37Ti0.94Ni0.06O3−δ perovskite (denoted as LCTNi-Ce) is synthesized and applied as a potential cathode electrocatalyst for a CO2-SOEC. The in situ exsolution strategy and A-site deficiency enable the surface decoration of plenty of Ni nanoparticles (NPs) serving as efficient reactive sites. Furthermore, the Ce decoration leads to increased oxygen vacancy concentration, accelerated oxygen exchange rate and improved CO desorption capacity. The symmetrical half-cell measurement confirmed the boosted electrolysis performance in both CO2/CO and CO2/H2 atmospheres. DRT analysis further evidences the facilitated oxygen ion transportation and gas adsorption/dissociation upon Ce decoration. Compared to a LCTNi cell, the LCTNi-Ce cell exhibits a significantly promoted current density of −0.557 A cm−2 in 50% CO2/50% H2 at 800 °C and 1.3 V, and a reduced Rp value of 0.514 Ω cm−2 under OCV condition.
研究领域:
材料科学
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化学工程
·
能源技术
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Journal of Energy Chemistry
·
2026
·
IF 15.6
Yifei Ye,Zhuoshen Huang,Hao Pan,Zhaokun Wang,Wei Xia,Guangtong Hai,Ge Wang,Xiubing Huang
Transition metal oxyhydroxides are crucial for the electrochemical oxidation of 5-hydroxymethylfurfural (HMF), though the co-adsorption and activation mechanisms of HMF and hydroxyl species require further clarification. This study designs cerium-doped Co-based layered double hydroxide (LDH) arrays, including 3%Ce-Co 3 Fe 1− x Al x -LDH/NF, to investigate Fe as a secondary active center and the role of Ce–O–TM (Transition metal) bridges in regulating HMF/OH − adsorption. Theoretical calculations indicate that Ce–O–TM bridges induce f – p – d gradient orbital coupling, optimizing HMF/OH − adsorption configurations and facilitating the HMF oxidation reaction (HMFOR). Synchrotron radiation characterization and in situ Raman spectroscopy reveal that Fe enhances electronic interaction between Ce and Co/Fe sites, strengthening the stability of M–O bonds, suppressing metal dissolution, and further optimizing reactant adsorption. Fe doping also modulates charge distribution and accelerates charge transfer. The optimized 3%Ce-Co 3 Fe 1 -LDH/NF delivers industrial current density (0.1 A cm −2 ) at 1.44 V RHE , with 98.1% HMF conversion, 99.6% FDCA yield, and 99.8% Faradaic efficiency. In an anion exchange membrane (AEM) electrolyzer, it achieves 0.5 A cm −2 at 2.1 V while maintaining high stability across 0.1–0.5 A cm −2 . These results provide an effective strategy for designing high-performance HMFOR catalysts through electronic structure modulation.
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ENVIRONMENTAL RESEARCH
·
2026
·
IF 8.2
Lin Yue,Shiqi Xing,Mengfei Wang,Hongxue An,Yunlong Yao,Yuxuan Li,Jing Lian
In this paper, the bimetallic zeolite imidazolate framework Ce-Fe-MI as a high-performance catalyst for ozonation-based degradation of tetracycline (TC) was investigated. During the catalytic process, electron transfer occurred between the two metal ions on the catalyst, and the mixed-valence state induced charge imbalance and unsaturated bonds, thereby forming catalytically active sites. Through comprehensive characterization and experimental evaluation, the Ce-Fe-MI catalytic ozonation process significantly enhanced the removal efficiency of COD and TOC, achieving a mineralization rate of 50% higher than ozonation alone. EPR identified the presence of uperoxide radicals (•O 2 - ) and singlet oxygen ( 1 O 2 ) as the main active species; however, quantitative analysis revealed hydroxyl radicals (•OH) was the main contributor to the degradation of pollutants, indicating the involvement of all three reactive oxygen species (ROS) in the catalytic ozonation reaction process. Density functional theory (DFT) calculations further demonstrated that the synergistic Ce-Fe interactions promoted electron transfer and facilitated ozone activation, leading to enhanced generation of reactive oxygen species. These findings emphasize the potential of Ce-Fe-MI catalyzed O 3 as an efficient and advanced oxidation process for antibiotic wastewater treatment.
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PubMed
高影响因子
MACROMOLECULAR CHEMISTRY AND PHYSICS
·
2026
·Vol. 227
·期 1
·e00443
·
IF 2.7
Jinbo Feng,Yaodong Liang,Yongjun He
This study reports a novel adsorbent prepared via a Pickering emulsion-template method for the efficient adsorption of Ce(III) from aqueous solutions. Water-in-oil Pickering emulsions were first stabilized by commercial nano-SiO2, using an aqueous sodium alginate solution as the dispersed phase and kerosene-diluted di-(2-ethylhexyl) phosphate (P204) as the continuous phase. The emulsion droplets were then gelled in a Ca 2 + solution to form stable Pickering emulsion hydrogel beads (PEHG), thereby encapsulating the P204-containing organic phase within a calcium alginate matrix. Fourier transform infrared spectroscopy and scanning electron microscopy confirmed the successful encapsulation and the structural integrity of the PEHG. Batch adsorption experiments demonstrated that the adsorption kinetics followed a pseudo-second-order model, indicative of chemisorption, while the equilibrium data were best described by the Redlich-Peterson isotherm, suggesting a complex adsorption mechanism involving both monolayer and multilayer interactions. Remarkably, the PEHG retained a Ce(III) removal efficiency above 99% over five consecutive adsorption-desorption cycles, with no observable structural degradation or leakage of the encapsulated phase. This strategy of encapsulating the functional organic phase (P204) within a hydrogel matrix not only enhances its utilization efficiency but also effectively prevents its leakage into the aqueous environment, offering a promising and sustainable approach for rare earth element recovery.
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CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Xin Wang,Yujie Ren,Wenge Fan,Qingqing Zhu,Peilin Yuan,Peng Jin,Xiaodong Wei,Chufeng Sun
Yttria-stabilized zirconia (YSZ) ceramic-based flow passage components are highly susceptible to cavitation erosion. To counter this limitation, rare-earth oxide (REO, RE=La, Ce, Nd, Gd) doped YSZ with superior cavitation erosion resistance was successfully prepared using spark plasma sintering technology. The microstructures, phase compositions, mechanical properties, and cavitation erosion resistance of YSZ and REYSZ were investigated. The results indicate that REO doping promoted the generation of t'- and c-phases, leading to a denser structure and grain refinement. Moreover, the presence of a larger concentration of the t'-phase resulted in a higher microhardness and elastic modulus. Owing to its superior mechanical properties, fine grains and high density, REYSZ exhibited improved cavitation erosion resistance. Particularly, NdYSZ exhibited 12.4 times higher cavitation-erosion resistance than that of YSZ. Furthermore, the grain boundaries of YSZ contain special m-phase bands, which are also responsible for the quicker exfoliation of grains during cavitation erosion. The segregation of rare earth elements at the grain boundaries inhibited the generation of m-phase bands, resulting in a longer cavitation erosion incubation period for REYSZ.
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TALANTA
·
2021
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IF 6.057
Azhar Irfan,Wenxia Feng,Kexin Liu,Khan Habib,Qishu Qu,Li Yang
As an important post-translational modification of proteins, phosphorylation plays a key role in regulating a variety of complicated biological reactions. Owing to the fact that phosphopeptides are low abundant and the ionization efficiency could be suppressed in mass spectroscopic detection, highly efficient and selective enrichment methods are essential to identify protein phosphorylation by mass spectrometry. Here, we develop novel titanium oxide coated core shell mesoporous silica (CSMS@TiO 2 ) nanocomposites for enrichment of phosphopeptides with simultaneous exclusion of massive proteins. The CSMS@TiO 2 nanocomposites have essential features, including uniform 1.0 μm diameter, 120 nm thick shell, 7.0 nm mesopores perpendicular to the surface, large surface area of 77 m 2 /g and pore volume of 0.15 cm 3 /g, therefore can greatly improve the sensitivity for identifying phosphopeptides by capillary electrophoresis-mass spectrometry. The proposed CSMS@TiO 2 nanocomposites are applied for analysis of β-casein tryptic digest and bovine serum albumin (BSA) protein mixture, respectively. The results show that the number of phosphopeptides detected is tremendously increased by using CSMS@TiO 2 nanocomposite, proving selectively enriching phosphopeptides due to the size-exclusive and specific interaction of the TiO 2 -modified mesopores. The enrichment of the phosphopeptides is achieved even for the digests at very low concentration of β-casein (1 fmol/μL). This research would open up a promising idea to utilize mesoporous materials in peptidomics analysis.
研究领域:
生物化学
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分析化学
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蛋白质组学
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2019
·
IF 4.175
Qi Wang,Lijun Wang,Yanhui Sun,Aimin Zhao,Wei Zhang,Jianmin Li,Hongbiao Dong,Kuochih Chou
The influence of Ce addition on the precipitation of ferrite (δ) and sigma (σ) phase in super-austenitic stainless steels during solidification was investigated via a combined experimental and theoretical approach. Thermodynamic calculations reveal that the secondary phase of δ and σ are precipitated in sequence near the end of the solidification process due to the segregation of Mo and Cr. The Ce addition improves the thermal stability of the δ, expands the range of Mo content for δ phase precipitation and increases the δ fraction in the solidified structure in the Gulliver–Scheil model. Experimental observation shows that a small addition of Ce accelerates δ nucleation in the interdendritic solute-rich liquid, refines the solidified structure and reduces Mo and Cr segregation, which suppresses precipitation of the σ phase. The σ phase precipitation is replaced by δ phase precipitation after a Ce addition of 0.016%. The change in the secondary phase from σ to δ shortens the time required for homogenization and reduces the nano-hardness of the interdendritic secondary phase, which is significant for hot working.
研究领域:
材料科学
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金属学与热处理
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物理冶金
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合金设计
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凝固理论
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高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 17
·期 40
·26690-26702
·
IF 4.493
Shengjie Xia,Mengmeng Shao,Xiaobo Zhou,Guoxiang Pan,Zheming Ni
A series of novel organic–inorganic nanoscale layered materials were synthesized by intercalating the Ti-containing Schiff base complex into the interlayer of the ZnM layered double hydroxides (LDHs, M = Al, Cr, Fe, Ce). The hybrid material was further calcined to make metal oxide composites with highly dispersed Ti elements (Ti/ZnO–MxOy). The structural characterization and photocatalytic results showed that, after intercalation and calcination, the metal oxide composites with a unique flower-like crystal morphology not only had high specific surface area, uniform pore size distribution and narrow band gap, but also showed extremely high photocatalytic performance for hexachlorobenzene (HCB) degradation. The Ti/ZnO–Cr2O3 composite with the narrowest band gap (2.40 eV) and the highest surface area (227 m2) showed the highest photocatalytic performance for HCB (95.5% within 240 min) among the four metal oxide composites. Particularly, it was found that composites derived from layered materials with different supramolecular structure of the host and guest showed different photocatalytic properties. In addition, based on the results from ESR, GC-MS and HPLC-MS, the type and amount of hydroxyl radicals, the decomposition intermediates and the pathway of HCB degradation photocatalyzed by Ti/ZnO–MxOy composites are also discussed in detail.
研究领域:
材料化学
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环境科学
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纳米科技
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光催化
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无机化学
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表面科学
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污染物降解
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Qinghong Meng,Ji-Guang Li,Qi Zhu,Xiaodong Li,Xudong Sun
A series of phase-pure [(Gd 0.6 Lu 0.4 ) 1- y Ce y ] 3 [Al 1- z (Mg/Si) z ] 5 O 12 ( y = 0–0.012, z = 0–0.15) garnet phosphors were synthesized via gel-combustion, and the effects of Mg 2+ /Si 4+ substitution on characteristics of the garnet host and Ce 3+ luminescence were investigated in detail. The maximum amount of equimolar Mg 2+ /Si 4+ dopants that can be incorporated into the garnet lattice and the optimal Ce 3+ content for luminescence were determined to be around z = 0.15 and y = 0.010, respectively. Mg 2+ /Si 4+ codoping was analyzed to narrow bandgap of the host, non-uniformly compress the [CeO 8 ] dodecahedron , enlarge the [Al-O] polyhedrons and meanwhile alter bond angles. Increasing Mg 2+ /Si 4+ content was found to lower the intensity, fluorescence lifetime and thermal stability of Ce 3+ luminescence and meanwhile red-shift the 4f-5d 1 excitation/emission peaks. The results were interpreted by considering band structure and crystal field splitting of the Ce 3+ 5d energy level. The y = 0.01 and z = 0.15 phosphor exhibited a broad emission peaked at ∼561 nm under 457 nm excitation, with CIE color coordinates of around (0.449,0.527), a correlated color temperature of ∼3567 K, a fluorescence lifetime of ∼43 ns, and an activation energy for thermal quenching of ∼0.267 eV. Electroluminescence indicated that the phosphors may find potential application in warm-white LEDs excited by blue-LED chips.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2020
·
IF 4.939
Koucheng Chen,Heng Zhang,Hui Tong,Ling Wang,Lu Tao,Ke Wang,Yinxi Zhang,Xingfu Zhou
Ce-doped TiO 2 nanorod arrays as the mesoporous supporting layer and TiO 2 compacted electron blocking layer was simultaneously fabricated by one-pot hydrothermal method . Ce-doped TiO 2 nanorod was utilized as down-conversion luminescence centers and commercial available carbon was used in hole-transport-free perovskite solar cells . SEM indicated that the doping of Ce reduced the diameter of TiO 2 nanorods. XRD and EDS spectra demonstrate the successful incorporation of Ce ions. UV–Vis absorption spectra and PL emission spectra show that the down-conversion center Ce 4+ can effectively utilize ultraviolet light and extend the absorption into the ultraviolet region. The carbon-based device using the optimized Ce doping concentration achieved power conversion efficiency (PCE) of 10.1%, which was 24.6% higher than that of undoped device. Ce doping changes the band gap of TiO 2 and the Fermi energy level, and thus improve the open circuit voltage. The open circuit voltage decay curve show that Ce-doped TiO 2 prolongs electron lifetime . EIS analysis hints that more carriers are generated. The UV stability has also been significantly improved., PCE of the optimized Ce-doped device still retains 90% of the initial value , however, the undoped device decreases to 55% of the initial value under light irradiation at ambient atmosphere for 12 h.
研究领域:
材料科学
·
能源科学
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高影响因子
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