Catalysis Science & Technology
·
2024
·Vol. 14
·期 5
·1255-1265
·
IF 4.4
Yiran Zhang,Linjia Li,Shu Zhao,Jiaqi Feng,Ke Li,Zhen Huang,He Lin
Integrated CO2 capture and utilization (ICCU) emerges as an effective strategy for reducing CO2 emissions, offering benefits such as facility simplification and improved energy efficiency. To further optimize the performance of ICCU-methanation dual-function materials (DFMs), a Ni/CeNiCa DFM featuring a Ce promoter and Ni pre-doping was synthesized using a one-pot method and impregnation technique. This resulted in an impressive CO2 capture capacity of 11 964 μmol gDFM−1 and a CH4 production yield of 11 061 μmol gDFM−1. The pre-doping of Ni serves as a promoter and catalyst, whereas the impregnation-loaded Ni enhances the catalytic effectiveness of the DFM. Despite its impact on the reduction of NiO, the Ce doping proves valuable by modulating the active crystal surface of Ni, thus enhancing the methane production rate. In addition, 3% O2 addition barely influences the CO2 capture capacity and CH4 production yield but slightly inhibits the CH4 production rate. Furthermore, 500 ppm NOx can have severe irreversible effects on the adsorbent, indicating that DeNOx facilities are necessary for the application of the ICCU system.
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Zhipan Wen,Jun Ke,Jinlei Xu,Sheng Guo,Yalei Zhang,Rong Chen
Toxic heavy metals As(V) and Cr(VI) removal from water environment has becoming more and more urgent due to their adverse health effect. In this study, the flowerlike Ce/Fe bimetallic oxides (CFBO), which combined the superiority of three-dimensionally (3D) hierarchical architectures and bimetallic synergistic effect, were innovatively designed and synthesized via one-step facile template-free hydrothermal method. Compared with pure iron oxides (PIO), the obtained CFBO exhibited excellent performance for As(V) and Cr(VI) removal, and the maximum adsorption capacities toward As(V) and Cr(VI) increased from 49.09 mg/g to 164.94 mg/g and 38.07 mg/g to 127.42 mg/g, respectively. Both As(V) and Cr(VI) removal efficiency decreased with an increasing solution pH due to the pH zpc of CFBO, but exhibited slightly change with coexisting anions except for SiO 3 2− and PO 4 3− ions. Combined results of FT-IR and XPS, it was concluded that the abundant hydroxyl groups existed on the surface of CFBO played a key role in the high uptake of As(V) and Cr(VI), and subsequently formed inner-sphere surface complexes. Attractively, the remarkable removal efficiency of As(V)/Cr(VI) in column experiments revealed that the CFBO had great potential for practical application.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Li Yinjun,Wang Jing,Zhang Pei,Xia Zhenzhen,Luo Zewei,Yang Jie
Apparent amylose content is a key determinant of rice flavor quality, yet traditional detection methods are often costly and time-consuming. To address this, we developed Ce-UiO66 nanozyme-based microfluidic paper-based analytical devices (μPADs) for the rapid quantification of apparent amylose. The sensing mechanism relies on the formation of a blue-purple apparent amylose-iodine complex via in situ catalytic oxidation, which is quantified through smartphone-based grayscale analysis. Mechanistic studies reveal that the catalytic activity of Ce-UiO66 is driven by O 2 − and H 2 O 2 intermediates. The tri-zonal design of the μPADs (droplet, reaction, and detection zones) effectively minimizes in situ reaction interference. Under optimized conditions, the method achieved a linear range of 0–40% within 15 min, showing excellent agreement with flow injection analysis. This Ce-UiO66@μPAD platform demonstrates significant potential as a low-cost, portable tool for rapid monitoring of apparent amylose in rice. Graphical abstract
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SOLVENT EXTRACTION AND ION EXCHANGE
·
2017
·
IF 2.456
Haiqin Wei,Yanling Li,Zhifeng Zhang,Tianyu Xue,Shengting Kuang,Wuping Liao
The extraction and separation of Ce(IV) and Th(IV) from trivalent rare earths (RE, including scandium) in sulfate medium using di(2-ethylhexyl)-N-heptylaminomethylphosphonate (DEHAMP, L) were studied. The effects of H2SO4 concentration, extractant concentration, and temperature on the metal extraction were investigated systematically. It was found that the extraction of metal ions by DEHAMP decreases in the following order: Ce(IV) > Th(IV) > Sc(III) > other RE(III). A possible extraction mechanism was proposed and the extracted complexes as Ce(SO4)2·2L and Th(HSO4)2SO4·L were determined by the slope analysis method. Thermodynamic parameters (ΔH, ΔG, and ΔS) were calculated. The extraction reactions of Ce(IV) and Th(IV) were each exothermic processes. The loaded Ce(IV) and Th(IV) can be stripped efficiently by 3% H2O2 and 4 mol/L HCl, respectively. The extraction capacity of 0.63 mol/L DEHAMP is 30.0 g/L CeO2 and 24.4 g/L ThO2, respectively. Furthermore, a solvent extraction process to selectively extract and recover cerium and thorium from bastnaesite leaching was proposed, by which the purities of cerium and thorium products reached 97.2% and 96.5% with a yield of 85.4% and 98.8%, respectively.
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ACS Applied Electronic Materials
·
2026
·Vol. 8
·期 15
·6545-6553
·
IF 4.7
Liu Qianzuo,Sun Sifan,Li Jiawei,Yang Haoran,Xiang Xinyue,Hao Ying,Yan Xuehua,Zhang Ting,Li Tie
Hydrogen peroxide (H 2 O 2 ), a key reactive oxygen species in physiological and pathological processes, demands highly sensitive detection for biological and biomedical research, yet developing electrocatalytic materials with high sensitivity, low detection limit, and excellent stability remains a challenge. Herein, a Fe−C@Fe/Ce−C bilayer heterojunction composite was fabricated for H 2 O 2 detection. Benefiting from its unique heterojunction architecture and synergistic Fe/Ce/carbon interactions, the as-prepared nanocomposite exhibits the exceptional H 2 O 2 sensing performance, with a wide linear range of 0.5−6000 µM, a high sensitivity of 490.5 μA·mM −1 ·cm −2 , a low detection limit of 0.12 µM, excellent anti-interference selectivity against common biological interferents, and outstanding long-term stability with no obvious performance variation after 11 days of continuous testing. The robust built-in electric field arising from the heterojunction facilitates interfacial charge transfer and accelerates H 2 O 2 activation, boosting sensing behavior. Furthermore, the flexible electrochemical sensor was fabricated via the screen-printing technology, which enables reliable real-time monitoring of intracellular H 2 O 2 released from HeLa cells, showing great potential for biological sensing. This work provides a promising design strategy for high-performance flexible electrochemical sensors and deepens the understanding of heterojunction and built-in electric field roles in electrocatalytic sensing systems.
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INORGANIC CHEMISTRY
·
2026
·Vol. 65
·期 31
·18475-18483
·
IF 4.6
Zhang Quan-Wei,Tian Zi-Han,Wu Ming-Xing,Ma Chen-Yuan,Bi Xing-Yu,Fang Zhi,Duan Mei-Hong
Exploring high-performance birefringent crystals holds
paramount
significance in modern optics, yet traditional candidates generally
struggle to reconcile substantial birefringence with broad spectral
transparency. To circumvent this long-standing bottleneck, a synergistic
multifunctional-group assembly strategy has been devised to guide
the rational design of birefringent crystals. Correspondingly, driven
by lanthanide coordination and hydrogen bonding, two kinds of π-conjugated
units were successfully incorporated into a new birefringent crystal,
Ce(2,2 ′ -bipyridyl) 3 (SCN) 3 . Synthesized
via a facile solution evaporation method, Ce(2,2 ′ -bipyridyl) 3 (SCN) 3 was characterized by a large birefringence
of 0.18@546 nm, broad transmission windows (nearly spanning 0.445–25
μm), and moderate thermal stability (up to 270 ° C), making
it favorable for practical applications.
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yingyun Luo,Zhuoya Meng,Jingwei Jiang,Yiyi Zhou,Yujia Chen,Ming Dong,Meiyi Xie,Peihan Xie,Mei Wang
A new electrochemical sensor based on a nanocomposites (Ce-MOF/Ti 3 C 2 ) synthesized by cerium-based metal-organic framework (Ce-MOF) and titanium carbide (Ti 3 C 2 ) was constructed. Ce-MOF/Ti 3 C 2 modified a glassy carbon electrode (GCE) to enable the individual or simultaneous trace detection of Cd 2+ and Pb 2+ by square wave anodic stripping voltammetry (SWASV). The morphology and composition of the composite were characterized using SEM, XPS and XRD, while its electrochemical performance was evaluated by electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). The developed sensor exhibited excellent performance, enabling simultaneous detection of Pb 2+ (8-500 μg/L) and Cd 2+ (10-500 μg/L), with detection limits of 1.02 μg/L and 2.5 μg/L, respectively, and also demonstrated good anti-interference capability, reproducibility and stability. This new method was successfully applied for the detection of Cd 2+ and Pb 2+ in river water and human urine samples, highlighting its potential for environmental and biological monitoring applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Caifu Dong,Yanli Zhou,Wei Liu,Wei Du,Xintao Zhang,Xueqin Sun,Litao Kang,Xiaoyu Zhang,Fuyi Jiang
Metal-organic frameworks (MOFs) are used to derive inorganic material, which is an effective way to achieve high performance electrode materials for sodium-ion batteries (SIBs) and lithium ion batteries (LIBs). In this work, a novel orthorhombic bimetallic organic framework, [ZnCe(L 7 )·2H 2 O]n (termed as ZnCeL, L = 5-aminoisophthalic acid) with 3D open framework was synthesized via a simple solvothermal reaction. Then ZnSe/CeO 2 /RGO was successfully fabricated via pyrolysis and selenization of ZnCeL and graphene oxide (RGO) composites. In the hybrid, ZnSe with high theoretical specific capacity and CeO 2 with electrocatalytic property are wrapped by conductive RGO. Herein, ZnSe/CeO 2 /RGO displays excellent sodium and lithium-storage performances. It reveals a sodium storage capacity of 113.2 mAh g −1 after 2000 cycles at 2.0 A g −1 . Meanwhile, ZnSe/CeO 2 /RGO as an anode for LIBs delivers a reversible capacity of 675 mAh g −1 at 0.1 A g −1 after 200 cycles. The electrochemical kinetic analysis reveals that the redox reactions are dominated by pseudocapacitive behavior. The excellent performance reveals a bright prospect of the bimetallic organic frameworks derived inorganic material for energy storage.
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MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2026
·
IF 5.2
Imran Khan,Hussain Sawwan,Khaled Alsaikhan,Atef El Jery,Kanwal Iqbal,Anam Iqbal,Olajire S. Olanrele
The limited efficiency of water oxidation is a significant challenge in the photocatalytic production of hydrogen peroxide (H 2 O 2 ) without sacrificial agents. Among the different water oxidation reactions, the two-electron water oxidation reaction (2e− WOR) stands out as a promising route for direct H 2 O 2 generation, owing to its favorable kinetics. However, strategies to effectively activate 2e − WOR remain underdeveloped. In this work, we employ a molecular engineering approach to achieve a high density of oxygen vacancy sites on the surface of BiVO 4 (Ov-BiVO 4 ). These vacancies promote favorable interactions with the oxygen-rich ligands of MIL-101 through electrostatic self-assembly, resulting in enhanced growth and reduced formation energy of the material. The optimized photocatalyst demonstrates a remarkable initial photocatalytic H 2 O 2 production rate of 4550.4 μmol g −1 h −1 in pure water, a 38-fold increase compared to the unmodified BiVO 4 . Additionally, the apparent quantum yield (AQY) reaches 12.35% at 420 nm. This enhanced performance is attributed to the synergistic effects of oxygen vacancies, the incorporation of rare earth bimetallic centers, and the Z-scheme heterojunction, all of which facilitate the separation of photogenerated charge carriers. Notably, the unsaturated coordination sites of Ce and Er efficiently promote O 2 adsorption and activate the 2e − oxygen reduction reaction (ORR) pathway, crucial for efficient H 2 O 2 production. MIL-101 further improves the water oxidation reaction, optimizing the redox reaction matching within the system. This work introduces a straightforward molecular engineering method for dual-atom anchoring with tailored coordination environments, emphasizing the importance of redox dual-regulation for achieving efficient H 2 O 2 synthesis.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Yunqi Zhang,Tianyu Zhang,Yifei Ye,Xinmeng Xu,Wenjuan Xiang,Xiubing Huang,Ge Wang
The development of catalytic activity for non-noble metals at low temperature features significant value for green chemical production with high economic interest. This work has successfully customized a series of ligand-functionalized and hierarchically porous Ce-UiO-66-X (HP-U(Ce)-X, -X= -NH2, -H, -NO2, -Br) as supports through the soft template methods, achieving the organic combination of bifunctional structures, providing abundant mesoporous channels for high exposure of guest Ni sites and efficient mass transfer of reaction substrates. The presence of electron-withdrawing/donating groups also facilitates electronic structure modification of Ni species. Therefore, with the selection of optimal -Br and synergistic improvement of mesoporous structures by formic acid (FA) and nitric acid (HNO3), Ni loaded on HP-U(Ce)-Br-6-4 obtains the lowest electron density and outstanding accessibility, reaching 100% conversion of dicyclopentadiene (DCPD) and ~100% selectivity for tetrahydrodicyclopentadiene (THDCPD) in only 30 min at 70 ℃ (while selectivity up to 95% at 60 ℃). This study provides new insight and guidance for performance modulation of non-noble metal based catalysts and rational integration of multifunctional structures in porous materials.
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Journal of Materials Research and Technology-JMR&T
·
2026
·
IF 7.3
Lihao Yang,Pengpeng Yu,Binglong Jiao,Qingwen Yang,Shuqi Ding,Pingping Jia,Yaokun Pan
To address the inherent microporosity and inadequate long-term corrosion protection capacity of plasma electrolytic oxidation (PEO) ceramic coatings deposited on 6063 aluminum alloy substrates, a hierarchical Ce-doped PEO/h-BN/diamondlike carbon (DLC) composite coating architecture was fabricated via combined hydrothermal pore sealing and plasma enhanced chemical vapor deposition (PECVD) post treatment routes. The microstructure, chemical composition, and corrosion behavior of the coatings were systematically characterized using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS). The results demonstrated that hydrothermal treatment effectively introduced h-BN nanosheets into discharge channels and the micropores of the Ce-doped PEO coating. XPS, Raman, and FT-IR analyses confirmed the successful incorporation of h-BN while preserving its characteristic layered structure. Subsequently, a continuous DLC film containing typical sp 2 /sp 3 hybridized carbon bonds was successfully deposited by PECVD. Among all tested processing parameter combinations, the composite coating modified with 1 g L −1 h-BN hydrothermal sealing followed by 60 min PECVD deposition delivered optimal comprehensive anticorrosion performance, featured by a minimum corrosion current density of 1.76 × 10 −9 A cm −2 and the highest impedance response in 3.5 wt% NaCl solution. The significantly improved anticorrosion performance originates from the dual synergistic barrier effect derived from h-BN nanosheet pore plugging and the dense DLC outer capping layer. Specifically, h-BN nanosheets effectively reduced pore connectivity and prolonged the diffusion path of corrosive species, whereas the dense DLC overlayer served as additional physical barrier that suppressed electrolyte penetration and interfacial charge transfer. This study provides valuable experimental guidance and theoretical support for the design of graded ceramic-carbon composite protective coatings for aluminum alloys serving in high chloride marine environments.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xuyi Tao,Xu Wang,Chunzi Yang,Ming Zhao,Chao Wang,Chunmei Zhang,Jixue Lu,Shan Zhang,Ruguang Ma,Chunxian Guo
Urea-assisted water splitting that involves urea oxidation reaction (UOR) and hydrogen evolution reaction (HER) can purify urea-rich wastewater and produce hydrogen, but the lack of efficient catalysts hampers its application. Ni(OH) 2 is recognized as one of the most active electrocatalysts for UOR but the performance is hindered by the limited active sites with intrinsic activity. Herein, porous Ni(OH) 2 nanosheets with Ce and N codoping (Ce, N Ni (OH) 2 ) are designed to regulate electrochemical microenvironment and used as a bifunctional catalyst for urea-assisted water splitting. The porous structure enhances the exposure of rich active sites, while the Ce, N-codoping optimizes the d band center of active Ni species and improves electron transport. In-situ Raman spectroscopy and theoretical calculation disclose the real active sites are γ-NiOOH species generated during the UOR process and the regulated microenvironment promotes a shift in the rate-controlling step of the UOR from CONNH* dehydrogenation to CONHNH* dehydrogenation with a reduced thermodynamic barrier. As a result, the Ce, N-Ni(OH)₂ catalyst delivers excellent UOR activity with a low potential of 1.39 V at 100 mA cm −2 and a small Tafel slope of 18.4 mV dec −1 , along with superior HER activity. The assembled urea-assisted electrolyzer achieves a low cell voltage of 1.49 V at 10 mA cm −2 and maintains robust operational stability over 70 h. This work demonstrates a synergistic design strategy of porous structure and dual-element modulation, offering a new avenue for developing advanced catalysts in sustainable energy and environmental applications.
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