CARBON
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2025
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IF 11.6
Haoyuan Yang,Yichen Wang,Yuhong Cui,Ke Yang,Yuanzhi Jiang,Qian Ye,Yibo He,Xuqing Liu
The synergistic effect of multidimensional nanomaterials is an effective strategy to improve the tribological properties of base oils. Herein, an inorganic-organic nanocomposite comprising zero-dimensional g-C 3 N 4 quantum dots (g-CNQDs) and two-dimensional NUS-2 modified with cetyltrimethylammonium bromide (CCOF) is developed as an additive for oil-based lubricants. When 3.0 wt% g-CNQDs/CCOF is added as a lubricant additive, the average coefficient of friction and wear volume of PAO-10 base oil decrease from 0.172 to 6.21 × 10 5 μm 3 to 0.095 and 1.12 × 10 5 μm 3 , respectively. Moreover, CCOF and g-CNQDs feature abundant oxygen groups that promote adsorption and tribochemical reaction films on worn surfaces. These coherent tribofilms prevent direct surface contact and enhance interfacial interaction. Additionally, g-CNQDs can act as fillers to repair the worn surface, thereby improving lubrication performance. The PAO-10 base oil containing the g-CNQDs/CCOF nanocomposite demonstrates enhanced performance under various loads, frequencies, and temperatures. Additionally, CCOF and g-CNQDs possess plentiful oxygen-containing functional groups that can facilitate the formation of adsorption films and tribochemical reaction films composed of iron oxides and carbonitrides on the worn surface. The continuous and robust tribofilm prevents direct contact between friction pairs and enhances the interaction at the friction interface. Moreover, g-CNQDs can work as fillers to repair worn surface, thereby improving lubrication performance. The PAO-10 base oil containing g-CNQDs/CCOF nanocomposite shows improved performance under various loads, frequencies and temperatures. This work develops a unique g-CNQDs/CCOF nanocomposite as an additive to improve the lubrication performance of lubricant, providing a reference for exploiting novel lubricant additive.
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高影响因子
CORROSION SCIENCE
·
2025
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IF 8.5
Zhihao Hong,Rong Liu,Yongjin Feng,Sifan Zong,Fantao Meng,Baoping Gong,Juemin Yan,Long Wang,Jijun Yang
The corrosion kinetics and deuterium permeation behavior of reduced activation ferritic/martensitic (RAFM) CLF-1 steel exposed to Li 2 ZrO 3 under high-temperature breeding blanket conditions were systematically investigated. The study revealed the corrosion kinetics of a bilayer corrosion structure that evolves with corrosion cycles, comprising a porous Fe-rich outer layer and a dense Cr-rich inner layer·H 2 O play a significant role in interfacial corrosion reactions, accelerating the degradation of the Fe-rich oxide through pore formation and delamination, resulting in enhanced deuterium permeation. Thermodynamic modeling confirmed that the interfacial reaction mechanism involves sequential structural transformations involving LiFeO 2 , Li 2 Fe 3 O 4 , Fe and LiCrO 2 phase. TEM reveals the dynamic microstructural evolution underlying the deterioration of the bilayer. A time-dependent corrosion model is proposed to elucidate the correlation between structural evolution and permeation resistance. With extended exposure, the Cr-rich LiCrO 2 phase dominates, acting as a passivating barrier that significantly impedes hydrogen isotope transport. Arrhenius analysis further substantiates the effectiveness of this evolving oxide structure in suppressing tritium permeation, highlighting the critical influence of H 2 O in corrosion-driven transport mechanisms.
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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
Meng Su,Chanjuan Wang,Jinqing You,Jie Wang,Zhiru Wang,Ying Liu,Xiaoshuang Yin,Wenzhong Yang,Hui Xu
Boron contamination in nuclear power plant cooling systems poses critical threats to aquatic ecosystems and human health due to its bioaccumulation and chronic toxicity. Targeting recalcitrant boron in nuclear effluents, we engineer a green and regenerable hydrogel adsorbent based on cellulose nanocrystal (CNC), polyethyleneimine (PEI), and polyvinyl alcohol (PVA) for highly selective boron removal from nuclear wastewater. By incorporating PAA-grafted CNC with PEI and PVA, a three-dimensional porous network was constructed, offering abundant adsorption sites. The optimized hydrogel (with PEI-PVA mass ratio of 1:2) exhibited a maximum boron adsorption capacity of 46.48 mg·g −1 , which is 40–60 % higher than other boron adsorbents, and reached equilibrium within 180 min. The adsorption process was highly pH-dependent, with optimal performance at pH 9, where boron speciates as B(OH) 4 − and strongly interacts with protonated amine and hydroxyl groups via electrostatic attraction and complexation. Kinetic and isotherm analyses indicated that the adsorption follows a pseudo-second-order model and Langmuir monolayer adsorption, confirming a chemisorption-dominated mechanism. The hydrogel also demonstrated strong anti-interference capability against common coexisting ions and excellent reusability over multiple adsorption-desorption cycles. With its high efficiency, outstanding selectivity, and sustainable design, this biomass-based hydrogel shows great potential for practical boron removal in nuclear wastewater treatment.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Jieqiong Wang,Boxin Yu,Fengshuo Wang,Zhe Wang,Ming Xu,Yanping Wu,Hongyuan Zhang
Heavy metal ions (HMIs) pollution has become a significant threat to the global environment and agricultural safety. The accumulation of these metals in soil and crops may have a serious impact on human health. Therefore, it is of utmost importance to develop a rapid, reliable and highly sensitive detection platform. A self-supporting electrochemical sensor based on an interpenetrating twin ZIF-8/carbon nanofiber aerogel (ZIF-8(IT)/CNT-NFCA) was developed for the sensitive and simultaneous detection of Cd 2+ and Pb 2+ in soil and crop samples. Unlike traditional electrodes, this independent architecture eliminated the need for rigid conductive substrates and complex surface modifications. The freestanding 3D nanofiber network, reinforced by carbon nanotubes and embedded with twin-structured ZIF-8, provided a mechanically stable and highly conductive matrix with abundant accessible active sites. Under optimized differential pulse anodic stripping voltammetry conditions, the sensor exhibited wide linear ranges of 0.10–100 μg·L −1 for both Cd 2+ and Pb 2+ , with low limit of detection (LOD) 0.09 μg·L −1 and 0.05 μg·L −1 , respectively. Benefiting from the integrated structure, the sensor showed enhanced signal stability and resistance to electrode delamination under real sample testing. Applications in actual rice, wheat, soil, and water samples demonstrated high recovery rates and validated the sensor's reliability. This study provides a robust and portable sensing platform, offering promising prospects for field-deployable heavy metal ion monitoring in environmental and agricultural safety.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Licheng Song,Shigao Shen,Lexuan Zhao,Zhen Song,Zhiwen Qi,Hongye Cheng
Deterpenation of lemon essential oil is essential for improving product quality and enriching bioactive compounds but challenging due to the weak selectivity caused by mildly polar compounds like citral and limonene. In this work, an efficient extractive deterpenation process was developed using a levulinic acid (LEA)-based natural eutectic solvent (NAES). Water was identified as the optimal natural hydrogen bond acceptor, with its content modulating the strength of hydrogen bonding between NAES and the target solute citral. A 2 wt% water content was employed for citral extraction, while higher water content aided citral recovery. Furthermore, hexane was selected as the anti-extractant from 2508 solvents to enhance selectivity and reduce limonene co-extraction. After sequential extraction and back-extraction with water and hexane, followed by vacuum distillation, high-purity citral (96.2 wt%) was obtained. The hydrous LEA NAES was recovered and reused effectively. This work presents an efficient and recyclable strategy for the extractive deterpenation of lemon essential oil using NAES.
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高影响因子
Journal of Material Cycles and Waste Management
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2025
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IF 3
Cao Hailin,Liu Haitao,Ma Wenchao,Weng Luqian
Municipal solid waste incineration (MSWI) fly ash is classified as hazardous waste because of its toxic constituents and requires solidification/stabilization (S/S) prior to safe landfill disposal. Selenium (Se), a particularly harmful element, presents significant environmental risks; however, research on its effective treatment remains limited, and no widely accepted remediation technology is currently available. This study evaluated the effectiveness of various S/S agents in stabilizing Se in fly ash, with a particular focus on iron micro-powder (IMP). The results indicate that IMP demonstrates superior solidification efficiency compared to conventional heavy metal chelating agents such as sodium sulfide and sodium dimethyldithiocarbamate, which exhibit negligible effectiveness. Under acidic conditions, the IMP achieved a Se stabilization rate of up to 97.6%, whereas its efficacy decreased in alkaline environments. To clarify the stabilization mechanism, the interactions between IMP and Se were examined in simulated leachates at different pH levels. SEM, EDS, and XPS analyses revealed that the primary S/S mechanism of IMP involves adsorption and reduction reactions. Specifically, the tetravalent selenium ions in solution were reduced to zero-valent selenium, which was subsequently deposited onto IMP surface, thereby achieving stabilization. Furthermore, the reaction process is significantly influenced by the environmental pH.
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高影响因子
BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS
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2025
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IF 2.2
Yuping Liu,Zhipeng Li,Ke Shen,Hua Huang,Xinshuai Zhang
Pantothenic acid (also known as pantothenate or vitamin B5), the obligate precursor of coenzyme A, is universally required in all branches of life. Although its biosynthetic pathways are well characterized, its catabolism remains poorly understood, constraining our insights into its broader biological roles and disease associations. By synergistic analysis of sequence similarity network (SSN) and genome neighborhood network (GNN) of pantothenate permease (UniProt ID: P16256 ) homologues, we identify a compact catabolic gene cluster for pantothenic acid in Geobacillus thermodenitrificans NG80-2. In vitro enzymatic activity assays indicate that pantothenic acid is first hydrolyzed to β-alanine and ( R )-pantoate by pantothenase belonging to the peptidase_M20-M20_dimer family (PF01546-PF07687), structurally distinct from the canonical pantothenase in amidase family (PF01425), and then ( R )-pantoate is sequentially oxidized into aldopantoate, ( R )-3,3-dimethylmalate, and α-ketoisovalerate by three dedicated dehydrogenases. The gene cluster is widespread within Bacillota phylum inhabiting high-temperature, hypersaline or alkaline niches, contrasting with previously described pathway restricted to Pseudomonadota, whose catabolic genes are scattered across the genomes. This work expands our knowledge about the pantothenic acid catabolism and reinforces the value of the transporter-focused genome mining strategy applicable for pathway discovery.
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PubMed
高影响因子
APPLIED CATALYSIS A-GENERAL
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2025
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IF 4.8
Zhenhua Ji,Shijing Xie,Hao Chen,Peng Zhang,Ding Luo,Yixuan Chai,Zhuo Wang
Aiming at the key issues of current vehicle Ammonia Slip Catalyst (ASC) catalysts, such as poor low-temperature activity, high noble metal content, and narrow operating window, this study aims to construct multi-scale pore structures in Al 2 O 3 supports of supported catalysts to regulate selective catalytic oxidation of NH 3 (NH 3 -SCO) across broad temperature ranges and space velocities by improving convective diffusion, conduction, migration, and adsorption processes within catalyst voids. Characterization results show that a series of catalyst supports with different pore structures was successfully prepared using different templates. Pt was loaded using an optimized supported catalyst preparation method. Meanwhile, the coating amount of the prepared catalyst on cordierite monolith substrates was significantly reduced, and NH 3 -SCO performance tests were conducted. The results indicate that single mesoporous structures have limited regulation on the intrinsic activity of catalysts, while macroporous structures enhance the influence of desorption and void diffusion of gas-phase reactants and products on catalytic reactions. In the presence of macroporous structures, the promotional effect of mesopores on NH 3 -SCO reactions is enhanced. Among all catalysts, hierarchical porous catalysts with larger pore diameters and better interconnected pore structures exhibit NH₃ conversion rates exceeding 99 % across the full temperature range of 200℃ - 500℃, with NH 3 concentrations below the regulatory limit of 10 ppm throughout the operating window. Macroporous structures and their pore diameters play a dominant role in regulating NH 3 -SCO reactions, particularly with stronger regulation at low temperatures. Increasing space velocity enhances the diffusion rate of NH 3 gas molecules while amplifying the influence of pore structure regulation on catalysts. Notably, compared with traditional Pt/Al 2 O 3 , pore structure regulation does not significantly increase the generation of N 2 O while effectively enhancing the catalytic activity of the ASC catalyst.
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高影响因子
RARE METALS
·
2025
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IF 11
Huang Huoshuai,Wei Zhidong,Yan Jiawei,Chi Jiasheng,Su Qianxiang,Ma Linlin,Chen Mingxia,Jiang Zhi,Sun Yangzhou,Shangguan Wenfeng
Photocatalytic hydrogen evolution, a promising clean energy conversion technology, faces efficiency limitations due to the mismatched timescales between sub-picosecond bulk photocarrier recombination and microsecond-scale surface reaction. Herein, a dual-strategy involving selenium decoration and NiS x cocatalyst loading was proposed to ameliorate the carrier dynamics bottleneck in CdS-based photocatalysts. The in situ loading of NiS x cocatalysts established an interfacial built-in electric field (BIEF) that enabled spatially oriented carrier separation and transfer, while the selenium modification optimized the light absorption range and Fermi energy level, obtaining an increase in the photocarrier concentration and further modulated the BIEF. Femtosecond transient absorption spectroscopy revealed a dual-channel carrier dynamics enhancement mechanism that BIEF-driven directional charge migration synergistically coupled with NiS x -mediated holes trapping. This synergistic effect achieved an approximately tenfold enhancement of hydrogen evolution rate (461.71 μmol h −1 ) relative to that of bare CdS under visible light (> 420 nm). This study elucidated the regulatory mechanism of element decoration and cocatalyst loading on carrier dynamics, providing an insight for designing high-performance photocatalysts.
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高影响因子
CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Kaicheng Yao,Haoqiang Zhang,Rongze Ma,Yanni Lang,Dan Wu,Liang Xu,Aning Ma,Yongjin Li,Dacheng Zhou,Zhiguo Song,Yugeng Wen,Yong Yang,Jin Han,Jianbei Qiu
Upconversion luminescence (UCL) of chiral inorganic nanostructured composite material and their applications have been challenging. This paper reports a successful preparation of Er 3+ /Yb 3+ co-doped chiral inorganic nanostructured BiOCl/Zn composite material (D-BYE-Zn) using a hydrothermal method and subsequent air annealing. The D-BYE-Zn phosphor significantly increased the intensity of UCL compared with the Er 3+ , Yb 3+ co-doped achiral bismuth oxychloride phosphor (A-BYE) and chiral bismuth oxychloride phosphor (D-BYE). Our study suggests that free electron leaps from the Zn fraction onto BiOCl may be responsible for the enhanced UCL. In addition, the temperature sensitive behavior of the D-BYE-Zn phosphor has been evaluated using the thermally coupled levels (TCLs) and non-thermally coupled levels (NTCLs) of Er 3+ and the maximum relative sensitivities (S R ) obtained are 0.95 % K −1 and 1.65 %K −1 (323 K). Our work provides a new strategy for constructing rare-earth doped chiral inorganic nanostructured composite materials to realize UCL enhancement while promising a wide range of applications in light source temperature measurement.
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高影响因子
Journal of Environmental Sciences
·
2025
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IF 6.3
Dong Liu,Xinlei Tao,Songkai Zhu,Fengjie Chen,Xiaoguang Wang,Ao Qian,Bolei Chen,Yong Liang
Water adsorption on carbon surface is common in humid environments and plays a significant role in interfacial redox processes. We report that water adsorption on hydrophobic carbon surface can lead to interfacial charge transfer. Under ambient air conditions, the adsorption of water facilitates the formation of hydrogen radicals and promotes interfacial reactions such as nitrate reduction. The 1 H solid-state nuclear magnetic resonance spectra and Raman spectra of hydrophobic carbon surface indicate that the initial stage of moisture adsorption is characterized by the formation of hydrogen bond network, followed by the adsorption of water molecules. Concurrently, it is observed that the concentration of reduction products on the carbon surface first increases and then stabilizes. We propose that the formation of hydrogen radicals and the progress of interfacial reduction reaction are related to the evolution of hydrogen bond network during water absorption. Using mass spectrometric detection of H 2 18 O in the product during water adsorption, a possible adsorption water favored interfacial reduction pathway was proposed. This research deepens the understanding of relationship between water adsorption and interfacial reactions, providing new insights into observed reduction reaction on surface of fine particles in the atmosphere.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2025
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IF 3.9
Ma Wencheng,Cheng Yankui,Fan Qinglu,Zhao Xiaoying,Zhang Meng,Jiang Yong,Chen Zehua
Lithium (Li)-metal anode undergoes large volume expansion during repeated charging and discharging processes, which leads to serious damage to the structural integrity of the Li-metal surface, uneven current density distribution at the interface, and the generation of uncontrollable Li dendrites or inactive Li. Herein, we have designed an easily scalable, low-cost iodine-containing electrolyte engineering for releasing inactive Li and constructing high-integrity interfacial Li-metal anodes. X-ray photoelectron spectroscopy (XPS) verifies that the LiI is involved in the composition of solid–electrolyte interphase (SEI) in the battery after activation. Furthermore, density functional theory (DFT) calculations indicate that the LiI has higher electronic insulation and ionic conductivity compared with the conventional inorganic component of SEI, which not only inhibits the inhomogeneous nucleation of Li + , but also improves the interfacial migration kinetics. Benefiting from this elaborated iodine-containing electrolyte, an ultra-long-cycle number of 1370 cycles at a current density of 5 mA cm −2 were achieved in Li symmetric battery, and the structural integrity of the Li anode surface was still maintained. In addition, to verify the feasibility of this strategy for practical applications, the Li-metal full batteries assembled with highly loaded LiFePO 4 (17.4 mg cm −2 , 3.0 mAh cm −2 ) cathode also demonstrated satisfactory long cycle stability and capacity retention.
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高影响因子
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