CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Wufeng Liu,Quanhua Xie,Tianlu Chen,Lu Ran,Zilin Nie,Yang Liu,Yuanyuan He,Haixing Chang,Najmeh Zare,Hassan Karimi-Maleh,Nianbing Zhong,Tejraj M. Aminabhavi
Photocatalytic optical hollow fibers (POHFs) coupled with spiral-shaped Cl − adsorption fibers are used to remove trichloroethylene (TCE) from wastewater. The POHFs are hollow quartz tubes coated with Ti 3 C 2 T x -doped oxygen vacancy (OV)-rich BiOBr (BiOBr-OV). The photocatalyst coating enhanced the excitation light intensity onto the photocatalytic fiber surface. The hetero-junction between Ti 3 C 2 T x and BiOBr-OV reduced the bandgap and broadened spectral absorption range of the composite photocatalyst. The material increased the production of reactive · O 2 - and •OH species, thereby improving the degradation of TCE. Spiral-shaped Cl − adsorption fibers comprised of polyethersulfone loaded with ethylenediaminetetraacetic acid-grafted metal–organic framework (MOF-808-EDTA). Tertiary amine groups (−R 3 N) of MOF-808-EDTA exhibited superior Cl − adsorption capabilities. As the Cl − ion indirectly quenches the free radicals, its removal reduced the inhibitory effect of the photocatalytic products, further enhancing the efficiency of TCE degradation and removing its degraded byproducts. TCE, chemical oxygen demand, and Cl − ion removal rates are 98.75, 69.15, and 99.22 %, respectively. Intimate coupling of photocatalysis and ion adsorption provided an effective solution for efficient removal of TCE, its degradation products, and Cl − ions from wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Ruitang Kou,Ming-Zhi Guo,Yuanyu Shi,Maofei Mei,Linhua Jiang,Hongqiang Chu,Yingzhong Zhang,Hengqing Shen,Likun Xue
Recycling of dredged sediment (DS), derived from the routine dredging operation of rivers, lakes and seas, into construction materials represents an eco-friendly way to alleviate the burden on the environment. At higher incorporation dosages, however, DS causes a dramatic reduction in the mechanical properties of the host materials, which greatly stymies a broader application. In this study, DS from Taihu Lake, combined with ground granulated blast-furnace slag (GGBS) and calcium carbide slag (CCS), was used to produce low-strength foamed concrete (FC). Moreover, visible-light active Bi 4 Ti 3 O 12 photocatalyst was added to the developed FC to obtain photocatalytic-functional and sound-proof products, which can be used as highway barrier walls. The results showed that within a dry density range of 500–1000 kg/m 3 , the compressive strength of the FC decreased greatly with an increase in the porosity. However, above 1000 kg/m 3 , the porosity exerted a much dwindled impact on the compressive strength . The pore structure of the sediment-based FC played a decisive role in influencing the basic properties and functional performance, which might follow the fractal characteristics. At a fixed dosage of foaming agent (hydrogen peroxide (HP)), the specimens prepared with 60% cement and 40% DS (DS-40) had the best sound insulation effect (1767 m/s, 9% HP), the lowest thermal conductivity (0.2831 W/m·k, 6% HP) and an excellent photocatalytic NO removal (14.1%, Bi 4 Ti 3 O 12 ), which was the optimal mixture for manufacturing sound barrier walls. A broader application of photocatalytic-functional sediment-based FC offers a sustainable way in recycling DS, reducing air pollution and creating pleasant living environments.
研究领域:
土木工程
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环境科学
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DOI
高影响因子
ACS Omega
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2025
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IF 4.3
Zhihua Xu,Yu Wu,Yangyang Zheng,Yucheng Chen,De Li,Wenting Ji,Yong Chen
As a well-known graphite-like material in superconductivity, lithium borocarbide (LiBC) can also be utilized as an electrode material in Li-ion batteries with a high specific capacity, which is assigned to the B–B bond produced through the aqueous reaction or the initial charge process. In this work, a rod-like LiBC sample (Ti-LiBC) is synthesized with the precursors of LiH + B + graphite in a sealed Ti tube through high-temperature sintering. Compared with the normal SUS-LiBC sintered in a sealed SUS304 tube, the Ti-LiBC possesses a lot of B–B bonds and a strong EPR signal, and it delivers a higher specific capacity (ca. 500 mAh g–1 at a mean discharge and charge potentials of 0.85 and 1.89 V, respectively) with excellent rate and cycle performances. Actually, the Ti metal can react with the H2 gas to produce the TiH2 phase at a high temperature, of which the extent determines the morphology of LiBC product, and the substitution of Li metal for LiH as the precursor can also result in the rod-like structure and the high specific capacity. Therefore, a hydrogen-free atmosphere is the key to synthesizing rodlike LiBC with excellent electrochemical properties, and this strategy might be extended to other graphite-like materials.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
Journal of Materials Research and Technology-JMR&T
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2026
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IF 7.3
Jiatong Zhong,Liang Liu,Rui Bao,Caiju Li,Weiyi Yang,Xin Kong,Xiaofeng Chen,Zunyan Xu,Fengxian Li,Jianhong Yi
Achieving exceptional strain hardening is a promising strategy for simultaneously enhancing the strength and ductility of titanium matrix composites (TMCs). In this study, a novel carbon-based nanomaterial, namely polypyrrole (PPy), was used to fabricate TMCs reinforced with intragranular titanium carbide (TiC) through spark plasma sintering and hot rolling. Concurrently, face-centered cubic of titanium (FCC-Ti) was formed through the synergistic effects of high local stress field and interstitial solid solution oxygen atoms. The ultimate tensile strength and uniform elongation of the Ti-0.6PPy composites reached 1029 MPa and 11.3%, representing a 67% and 88% improvement over the pure Ti (614 MPa, 6.0%), respectively. The significantly enhanced strength was benefited from the O atoms solid solution strengthening and Orowan strengthening. Ex-situ EBSD combined with TEM characterization were conducted to analyze the microstructure of the deformed Ti-0.6PPy composites. It had revealed that dislocation hot spots moved from grain boundaries to the grain interiors and surrounded to the new formed FCC-Ti phase. This transformation enhanced the dislocation storage capacity, led to higher dislocation density and prolonged strain hardening, thereby achieved superior uniform elongation and ductility.
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高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 15
·4525-4533
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IF 5
Qiuyu Zhang,Yajie Chen,Xinyan Yu,Yuejia Yin,Yaxin Ru,Guohui Tian
Fabricating photocatalysts with customizable structure and composition using different metal–organic framework (MOF) building blocks has intriguing implications in chemistry and material science, but it is challenging to do so. Here, a two-step synthetic strategy was designed to prepare MIL-125(Ti)@TiO2 hollow nanodiscs decorated with Co3S4 nanoparticles for CO2 photoreduction. The Co-based zeolite imidazolium ester backbone (ZIF-67) nanolayer was first loaded on the prepared MIL-125(Ti) nanodiscs to form core@shell MIL-125(Ti)@ZIF-67 nanodiscs. The following sulfidation process under solvothermal condition led to the production of MIL-125(Ti)@TiO2 hollow nanodiscs decorated with Co3S4 nanoparticles (MIL-125(Ti)@TiO2\Co3S4). This ternary hybrid catalyst with hollow nanodisc structure possessed a significantly enhanced charge separation efficiency and visible light absorption, along with offering a huge number of active sites. Considering the above advantages, the CO2 photoreduction activity of the optimized MIL-125(Ti)@TiO2\Co3S4 catalyst was significantly increased when compared to single-component catalysts (MIL-125(Ti), TiO2, and Co3S4) and binary hybrid catalysts (MIL-125(Ti)@TiO2 and TiO2\Co3S4) under simulated sunlight irradiation. CO is the main product with a productivity of 587.50 μmol g−1 h−1, which is almost seven times higher than that of pure MIL-125(Ti). The potential photocatalytic mechanism of the hybrid photocatalyst has also been demonstrated. This study presents a simple and effective technique for fabricating MOF-based hybrid catalysts for photocatalytic applications.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Chunliang Zhao,Jinghui Wu,Yidi Gao,Jialin Zhou,Leilei Zhang,Chi Wang,Yang Huo,Xianze Wang,Mingxin Huo
The rapid increase in PLA product consumption has led to significant environmental challenges. To address this issue, this study focuses on developing efficient catalysts to accelerate PLA alcoholysis, aiming to enhance degradation efficiency. A novel composite catalyst, SiWMn Ⅲ @MIL-125(Ti), was synthesized by encapsulating Keggin-type polyoxometalate (POM) in the octahedral cavities of MOF(MIL-125(Ti)). The compound was comprehensively characterized, while density functional theory (DFT) calculations further confirmed the potential localization of POM within the MOF. The catalyst exhibited excellent efficiency in the alcoholysis of polylactic acid (PLA) using ethylene glycol (EG) under optimum conditions (1 wt% catalyst, 160 °C, 30 min, EG/PLA molar ratio = 4:1, 18 % POM loading), achieving high PLA conversion. The liquid products were systematically analyzed, proposing their oligomeric structures. Notably, this heterogeneous catalyst could be easily retained by filtration and could be reused for more than 10 cycles without significant activity loss. Combined with DFT simulations, a reasonable catalytic mechanism was elucidated, highlighting the synergistic role of POM@MOF in facilitating alcoholysis of PLA. This work not only provides insights into the design of efficient MOF-based catalysts for polymer degradation but also suggests the potential applicability of POM@MOF systems in other depolymerization processes.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2026
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IF 8.2
Bingzhu Wang,Wenhao Dou,Huan Guo,Jianjun Sha
To address the challenges of achieving densification at lower sintering temperatures and precise control over the microstructure in UHTCs-SiC, a novel reactive hot-pressing sintering technology was proposed to realize the low-temperature densification of fine and uniform (Zr,Ti)B 2 -(Zr,Ti)C-SiC ceramics, as well as the accurate tailoring of phase compositions. The intrinsic relationship between phase compositions, microstructural tailoring and mechanical performance was revealed. As the molar ratio of (Zr,Ti)C/(Zr,Ti)B 2 decreases, rod-shaped microstructural units (ultra-high temperature borides) progressively develop within the ceramic. These elongated features play a beneficial role in deflecting propagating cracks. When coupled with equiaxed (Zr,Ti)C grains, this combination allows the synergistic strengthening and toughening mechanisms to be fully activated, so the (Zr,Ti)B 2 -(Zr,Ti)C-SiC ceramics with a (Zr,Ti)C/(Zr,Ti)B 2 molar ratio of 1:2 exhibit a flexural strength of 479.2 MPa and a fracture toughness of 3.84 MPa·m 1/2 , which are 62.2 % and 40.7 % higher than those of (Zr,Ti)C-SiC ceramics, respectively.
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DOI
高影响因子
POWDER TECHNOLOGY
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2023
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IF 5.2
Shunyuan Xiao,Shaofu Li,Xuemeng Gan,Yafeng Yang
LaB 6 has been demonstrated as an effective O-scavenger for powder metallurgy (PM) Ti alloys to mitigate the detrimental effect of solid-solution O on the ductility. However, conventional mechanical mixing methods lead to the agglomeration and non-uniform distribution of LaB 6 , resulting in partial deactivation and reduced O-scavenging efficiency during sintering. Aiming at this issue, we propose an electrostatic self-assembly strategy that combined surface functional modification of LaB 6 with solid-liquid fluidized bed powder coating treatment to synthesize a novel LaB 6 -coated Ti composite powder. Compared to traditional LaB 6 additives in powder mixtures, the LaB 6 -coating particles exhibited excellent O-scavenging efficiency and higher utilization rate. Even at a low coating-content of 0.3 wt% LaB 6 , the tensile strength and elongation of the as-sintered Ti samples increased from 461 ± 26 to 579 ± 13 MPa and 5.6 ± 1.4% to 14.2 ± 0.3%, respectively. The achieved improvement rate (∼95%) in tensile elongation was significantly superior to the previously reported data of the rare-earth O-scavengers.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Junyang Liu,Zengxi Li,Yuhang Bian,Guoliang Zhang,Jie Li,Gang Wang,Chunshan Li
Synthesis of methyl methacrylate (MMA) by aldol condensation of methyl propionate (MP) with formaldehyde (FA) has received researchers’ attention in recent years. Herein, a kind of acid-base bi-functional Cs/Ti-SiO 2 was developed for the conversion of MP and FA to MMA. A series of Cs/Ti-SiO 2 samples with different acid-base properties were prepared by changing the loading amount of Cs and Ti elements and characterized using XRD, BET, FT-IR, DR UV–vis, SEM, TEM, XPS, CO 2 /NH 3 -TPD, O 2 -TPO, py-IR, and TGA. The introduction of Ti species could significantly regulate the acidity and affect the surface structure of catalyst, facilitating the activation of reactants and aldol reaction effectively. The relationship between the acid-base properties and catalytic activity was correlated, which revealed the crucial role of weak and medium acid sites in this transformative process. The production of MMA was optimized by using response surface methodology (RSM) based on the Box-Behnken design (BBD) approach. As a result, 62.8 % yield of MMA with selectivity of 75.6 % could be achieved at optimal reaction conditions. The catalyst would suffer deactivation from carbon deposition, which could be easily regenerated by simple thermal treatment without any decrease in initial activity during 600 h time-on-stream. Kinetic studies unraveled the activation energy of aldol condensation was 112.2 kJ/mol.
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高影响因子
Surfaces and Interfaces
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2025
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IF 6.3
Wei Sun,Jiale Lu,Bo Feng,Amin Jv,Yufei Zhang,Jingwen Wang,Renquan Guan,Chunbo Liu
The construction of highly efficient charge transfer channels is crucial for effectively extending the lifetime of photogenerated carriers in heterostructures and enhancing their photocatalytic activity. In this study, ferrocene carboxylic acid (Fc-COOH) was successfully bonded to the surface of amino-modified titanium (Ti) through amide bonding. This modification not only preserved the excellent structure of MIL-125(Ti) but also broadened the light absorption range and effectively prolonged the lifetime of photogenerated charge carriers. The degradation rate of tetracycline by NTFCC-1.0, which exhibited the highest photocatalytic activity, exceeded 90% within 40 min, significantly outperforming the composite sample without amide bond connection. In addition, the mechanism of enhancing photocatalytic activity was further explored, and the toxic side effects of degradation intermediates on the environment were simulated through software. This work presents a novel approach for modifying MOF-based materials.
研究领域:
环境科学
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材料科学
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光催化
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DOI
高影响因子
MOLECULES
·
2019
·Vol. 24
·期 7
·1246
·
IF 3.06
Xingzhong Guo,Shengchi Bai,Jiaqi Shan,Wei Lei,Ronghua Ding,Yun Zhang,Hui Yang
With methylsilsesquioxane (MSQ) aerogels synthesized by the sol-gel method as a raw material and Si-Ti sol as a binder, an alcohol-based aerogel slurry consisting of only MSQ aerogel and Si-Ti sol was prepared and coated on expanded polytetrafluoroethylene (ePTFE) to form an MSQ aerogel coating layer, followed by low-temperature heat treatment. The effect of Si-Ti sol content on the microstructure of the MSQ aerogel coating layer was investigated, and the properties of a typical MSQ aerogel-layer-coated ePTFE film were evaluated. The results show that Si-Ti sol has an important role in terms of film-forming capability, surface smoothness, flexibility, and powder dropping of the MSQ aerogel coating layer. With a Si-Ti sol of 10.5 wt.% content as a binder and after heat treatment at 170 °C for 30 min, the coated ePTFE flexible thin film with a layer thickness of 30 μm shows high uniformity, integrity, and electrical insulation properties, with an elongation at break decrease over 130%, a thermal conductivity of 0.1753 W/(m·K) at 25 °C, a dielectric constant of 16.5674, and a dielectric loss of 0.06369, which can be promisingly applied in cable sheaths.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
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IF 4.9
Rong Deng,Zhilan Wang,Jing Chen,Lianqin Zhu,Yaqin Shi,Wenli Xue
Ti 3 C 2 QDs with good water solubility and photoluminescence properties was prepared by nitrogen and phosphorus doping (N,P-Ti 3 C 2 QDs). The probe has a fluorescence emission peak at 420 nm and emits bright blue fluorescence, which can distinguish and detect two antibiotics with similar structures, chlortetracycline (CTC) and tetracycline (TC). The fluorescence enhancement effect can be realized by the interaction with CTC. The linear range is 2–22 μM, and the detection limit is as low as 0.53 μM. And the change of fluorescent color from bright blue to bright purple can be observed with the naked eye. At the same time, with the addition of TC, the fluorescence of N,P-Ti 3 C 2 QDs can be quenched by static quenching effect, and the fluorescence color changes from bright blue to yellowish green. The detection range is 4.1–20.5 μM, and the detection limit is as low as 0.16 μM.Therefore, on this basis, a strategy for simultaneous detection and recognition of CTC and TC is proposed. The method has been successfully applied to the determination of CTC and TC in milk samples. This paper provides a new detection method for the identification of tetracycline antibiotics and taps the application potential of Ti 3 C 2 QDs in food detection.
研究领域:
分析化学
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食品安全
·
环境科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）