APPLIED CATALYSIS B-ENVIRONMENTAL
·
2022
·
IF 24.319
Shuisen He,Tingting Huang,Yu Fan
Novel alumina-supported Ni-Mo hydrodesulfurization (HDS) catalysts were prepared via assembly of Mo and Al precursors induced by tetradecylamine (TDA). Compared with conventional impregnation, this assembly method improves Mo dispersion, weakens metal-support interactions, enhances Ni modification at MoS 2 edge sites, and produces more NiMoS phases on Al 2 O 3 . The optimal NiMoS microstructure was obtained by modulating the TDA/Mo ratio in the assembly. A microstructure-activity correlation indicated that the S vacancies at the NiMoS corner sites favored σ-adsorption and direct desulfurization of 4,6-dimethylbenzothiophene (4,6-DMDBT), and those at the NiMoS edge sites promoted C-S breaking in hydrogenated derivatives of 4,6-DMDBT. Among these catalysts, NiTMo-2.0/Al 2 O 3 , which had the most corner and edge S vacancies, exhibited the highest reaction rate constant of 5.89 × 10 −7 mol·g −1 ·s −1 and the highest desulfurization ratio of 99.5% in HDS of 4,6-DMDBT.
研究领域:
催化化学
·
能源化工
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2020
·
IF 5.774
Jinwei Xue,Lei Zhu,Xu Zhu,Hui Li,Chao Ma,Shifan Yu,Daofeng Sun,Fujun Xia,Qingzhong Xue
In recent years, oil spills and industrial organic pollutants have caused irreparable damage to the environment and biological ecosystems. Therefore, the treatment of oily wastewater has become a serious global challenge. Here, we prepared superhydrophobic and superoleophilic tetradecylamine-MXene functionalized melamine sponge for effective oil/water separation and selective oil adsorption using a facile and effective method. It is found that the functionalized sponge can selectively and effectively absorb various oils from oil/water mixtures, which absorption capacity ranges from 60 to 112 times its own mass. Moreover, the water-in-oil emulsion can be efficiently separated by the functionalized sponge, due to its high oil selectivity. Besides, the functionalized sponge shows great mechanical property, chemical stability, and repeatability in various harsh environments, which make it great promising in the treatment of oily wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2024
·Vol. 39
·期 2
·332-336
·
IF 1.3
Ma Kuoyan,Zhao Pengxian,Yi Hongyu,Yu Haijun,Zhou Moxi,Zhang Lingling,Liu Yupu
A core-shell composite consisting of ZSM-5 zeolite as the core and ordered mesoporous silica as the shell was prepared by a surfactant-controlled sol-gel process and using tetradecylamine (TDA) as the template and Tetraethylorthosilicate (TEOS) as the silica precursor. The pores of the silica shell were found to be ordered and perpendicular to the crystal faces of the zeolite core. The thickness of the shell in the core-shell structured composite can be adjusted in the range of 20–90 nm, while the surface morphology and the pore size distribution were modified by changing the mass ratio of TEOS to zeolite. The composite molecular sieves have higher surface area for capturing molecules than ZSM-5, and with the increase of mesoporous shell layer, the ZSM-5@SiO 2 - x composites show stronger adsorption capacity of butyraldehyde. However, when the shell thickness exceeds 90 nm, the adsorption capacity of butyraldehyde decreases instead. The composites have a huge potential for environmental applications.
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
POWDER TECHNOLOGY
·
2024
·
IF 4.5
Liaoyuan Ouyang,Jingjie Wu,Zhiqiang Huang,Aleksandr E. Burdonov,Nadezhda V. Vchislo,Hongling Wang,Guichun He,Xinyang Yu,Jinpeng Ma,Wenyuan Li
How to flotation fine kaolinite efficiently is a challenge. For the improvement of fine kaolinite flotation recovery, a novel 3-tetradecylamine propyl amidoxime (TPA) collector was synthesized. In comparison to the conventional collector tetradecylamine (TDA), the fine kaolinite exhibited better floatability in the TPA system, with a recovery of 90.5% in micro-flotation experiments. It was indicated by contact angle tests that TPA was more effective in improving the hydrophobicity of kaolinite by increasing its contact angle from 24.5° to 85°. Fourier transform infrared spectroscopy (FTIR) indicated that the adsorption of TPA on kaolinite surface was by electrostatic interaction, and zeta potential tests showed a significant increase in the surface potential. In addition, it was learned that TPA interacts with the kaolinite surface more effectively than TDA by using density functional theory (DFT) calculation. Therefore, TPA with excellent performance is expected to be a novel and efficient fine kaolinite flotation collector.
研究领域:
矿物加工工程
·
表面化学
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Boning Han,Shichen Yuan,Tao Fang,Fengjuan Zhang,Zhifeng Shi,Jizhong Song
Metal halide perovskites have been focused as a candidate applied as a promising luminescent material for next-generation high-quality lighting and high-definition display. However, as perovskite films formed, high density of defects would be produced in solution processing inevitably, leading to low exciton recombination efficiency in light-emitting diodes (LEDs). Herein, a facile and novel self-passivation strategy to inhibit defect formation in perovskite films for constructing high-performance LEDs is developed. For the first time, we introduce 1,4,8,11-tetraazacyclotetradecane (cyclam) in perovskite precursor solution, and it spontaneously passivates defect states of CsPbBr3-based perovskites by coaction between amine and uncoordinated lead ions during spin-coating without an anti-solvent process. Furthermore, as a delocalized system, cyclam also possesses chemical properties that facilitate exciton transportation. The proposed passivation strategy boosts the external quantum efficiency from 1.25% (control device) to 16.24% (cyclam-passivated device). Furthermore, defect passivation is also conductive to reduce LED degradation paths and improve device stability as the extrapolated lifetime (T50) of LEDs at an initial brightness of 100 cd/m2 is increased from 0.9 to 127 h. These findings indicate that the introduction of cyclam is highly effective to enhance the performance of LEDs, and such a strategy in effectively reducing the defects could be also applied in other perovskite-based devices, such as lasers, solar cells, and photodetectors.
研究领域:
材料科学
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光电学
·
半导体物理
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Fengjie Gu,Peiwen Li,Shichen Mao,Baogang Wang
An acid-amide bicomponent gelator, composed of 3,3’-dithiodipropionic acid and octadecylamine in a 1:2 molar ratio, was developed to construct supramolecular oil gels in base oils. The gelation mechanism involves the spontaneous self-assembly of gelator molecules into a well-defined 3D lamellar network, driven by van der Waals interactions and electrostatic forces. The representative poly (ethylene glycol) (PEG200) gel exhibited exceptional properties, including reversible heat and shear thixotropic behaviors, as well as high thermal stability, making it a promising candidate for semi-solid lubricants. The tribological evaluations revealed that the PEG200 gel (containing 6 wt% gelator) significantly outperformed the base oil, achieving the remarkable reductions in friction (37.96-57.92%) and wear (43.71-59.06%) under demanding conditions such as high load, elevated temperature, and prolonged duration. Moreover, the addition of 6 wt% gelator enhanced the load-carrying capacity of neat base oil from 300 N to at least 600 N. The superior tribological performance of PEG200 gel was attributed to the formation of a complex boundary lubrication film on the friction interface, consisting of a physical adsorption layer and a robust tribofilm. This dual-layer structure effectively minimizes the friction and wear, highlighting the potential of supramolecular gel lubricants for advanced mechanical lubrication applications.
研究领域:
材料科学
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高分子化学
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摩擦学
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纳米材料
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表面科学
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润滑工程
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·
IF 3.9
Wang Rong,Tian Xiao-Li,Li Jin,Chen Jia-Jia,Hu Yue,Zhang Ji
Ferroptosis is a non-apoptotic form of cell death that offers unique advantages in various cancer therapies. Gene therapy, on the other hand, involves transferring therapeutic genes into cancer cells to regulate related proteins and exert therapeutic effects. Nanomaterials that combine the ability to induce ferroptosis in cancer cells with gene delivery functionality hold great potential for tumor therapy. Herein, we designed and synthesized a series of ferrocene-containing (Fc) cationic lipids (NFC-1~4) based on the Ugi reaction. Fc, as a typical Fenton reaction catalyst, can effectively trigger ferroptosis in cancer cells. The results showed that NFC-1~3 lipoplexes could be efficiently taken up by A549 cells and exhibit excellent gene transfection capabilities, with the best transfection efficiency surpassing that of Lipofectamine 2000. Reactive oxygen species (ROS) detection experiments revealed that NFC-2 possesses Fenton characteristics, enabling it to induce the Fenton reaction and produce ROS. In vitro antitumor experiments demonstrated that NFC-2 LNPs could inhibit tumor cell growth to some extent, with its efficacy significantly enhanced after DNA encapsulation. Mechanistic studies indicated that the Fenton reaction mediated by NFC-2@DNA lipoplexes converted endogenous H 2 O 2 into highly toxic ·OH, leading to increased intracellular ROS levels, glutathione (GSH) depletion, and inactivation of glutathione peroxidase 4 (GPX4). The disruption of the cellular redox balance caused excessive accumulation of lipid peroxides (LPOs), ultimately inducing ferroptosis. NFC-2 holds promise as an efficient ferroptosis agent and a dual-function lipid for co-delivering DNA, offering potential for combined gene therapy and ferroptosis-based cancer treatment. Graphical abstract
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DOI
高影响因子
Gels
·
2025
·Vol. 11
·期 10
·806
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IF 5.3
Qinglong Liu,Dewei Ma,Haoze Cheng,Keke Yang,Bo Hou,Ziwen Heng,Yu Qian,Wei Liu,Siyuan Chen
Oral administration remains the most patient-friendly drug delivery route, yet its efficacy is limited by physiological barriers including gastric degradation and inefficient cellular uptake. pH-responsive nanogels have shown promise for gastrointestinal drug delivery, though their effectiveness is often constrained by poor membrane interaction. Inspired by natural membrane-anchoring mechanisms, a series of comb-like anionic polymers were designed via grafting alkylamines of different chain lengths (C10, C14, C18) at varying densities (10–30%) onto a biodegradable poly(L-lysine isophthalamide) (PLP) backbone. These pH-responsive comb-like polymers self-assembled into nanogels for loading the hydrophobic chemotherapeutic agent camptothecin. The alkyl length and grafting density significantly influenced pH-responsive behavior, membrane disruption, and drug release profiles. The optimal formulation—the nanogel prepared with PLP grafted 30% C14—achieved a high drug-loading capacity, ideal particle size and stability, and offered superior protection in acidic conditions (only 7 ± 5% release at pH 1.2 over 24 h), while enabling rapid intestinal release (78 ± 2% at pH 7.4 within 24 h). The nanogels significantly enhanced cellular uptake, cytoplasmic delivery, and cytotoxicity against colorectal carcinoma cells. This study demonstrates the key role of hydrophobic modification in designing effective oral nanocarriers, providing a promising platform for the treatment of intestinal diseases.
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产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Cui Ruopeng,Li Yi,Zhang Xuefei,Duan Zewen,Zhao Biao,Wan Chunlei
Integrating 2D (semi)metals and semiconductors into atomic-scale Schottky heterojunctions offers a promising pathway for achieving robust charge separation, crucial for microwave absorbers, electromagnetic interference shielding materials, electrocatalysts, photocatalysts, etc. However, conventional bottom-up assembly approaches often encounter challenges of severe agglomeration of 2D components and non-basal contacts due to lattice mismatch, resulting in a suboptimal interfacial density and insufficient charge separation. This study introduces a top-down approach involving the thermal deintercalation of graphene/alkylamine superlattices, leading to the in-situ formation of Schottky heterojunctions between the thermally reduced p-type rGO-alkylamine superlattice phase and entirely deintercalated semimetallic rGO phase (rGO denotes reduced graphene oxide), which can be flexibly tuned by the length of the alkylamines. A spatial network of 2D/2D vertical/lateral Schottky heterojunctions is thus formed with high interfacial density, greatly facilitating charge separation, and thereby strengthening polarization loss while reducing conduction loss. This ensures steady permittivity in the Ku band, maintaining strong absorption under small oblique incidence. Accordingly, a record-high simulated far-field bistatic radar cross-section reduction of 72.68 dB at 1° is attained along with diversified adaptive multifunctionality. This paper provides a groundbreaking avenue realizing spatially distributed atomic-scale 2D/2D Schottky heterojunctions in 2D materials, promoting various related functional materials.
研究领域:
材料科学
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纳米技术
·
凝聚态物理
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电磁学
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表面科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Mingwei Zhao,Xinyue Yang,Zhenfeng Ma,Ying Li,Xiangjuan Meng,Caili Dai,Yingnan Wang
In the process of spontaneous imbibition to enhance oil recovery (EOR) in low permeability reservoirs, nanoparticles have shown great potential due to their excellent properties. In this study, four novel amphiphilic carbon quantum dots (ACDs) were synthesized by the pyrolysis of citric acid and four long-chain primary amines. The results of high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS) confirmed the successful synthesis of ACDs with an average particle size of 3.4 nm. The results show that the synthesized ACDs have excellent stability, interfacial rheology, and wettability reversal ability. In the spontaneous imbibition experiment, the recovery of the ACD solution was 22.10% higher than that of deionized water. In addition, the influencing factors in the imbibition process were studied in combination with nuclear magnetic resonance (NMR) results. Finally, it is considered that the imbibition process is related to the combined effect of small size, low interfacial tension, and the wettability reversal ability of ACDs. The developed ACDs provide a promising solution for spontaneous imbibition to the EOR, especially in low permeability reservoirs.
研究领域:
石油工程
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纳米技术
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化学工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FOOD HYDROCOLLOIDS
·
2025
·
IF 12.4
Binglei Song,Peili Wang,Xiaomei Pei,Linyu Xue,Yushi Sun,Zhao Chen,Zhenggang Cui
High internal phase emulsions (HIPEs) possess unique semi-solid characteristics and find extensive applications in food, medicine, and other fields. HIPEs stabilized by cellulose nanocrystals (CNC) not only show high safety and good stability, but also has good biocompatibility and biodegradability. However, Large amounts of CNCs are usually necessary to stabilize the HIPEs due to the rather strong hydrophilicity of the CNC surface. Herein, amine compounds were utilized to modify the CNC surface instead of commonly used ionic surfactants. The results indicate that hydrogen bonding serves as the main molecular interactions between amine molecules and the CNC surface. A combination of 0.1wt% CNC and 0.1 mM aliphatic primary amine could stabilize Pickering emulsions with an oil-water ratio of 1:1 (v/v). The usage of CNC is about 20-fold lower than that of emulsions without amines. When combined with 1 mM aliphatic primary amine, stable HIPEs with an oil-water ratio of 8:2 (v/v) were formed, with a stability exceeding 6 months. All the HIPEs stabilized by CNC and amine compounds exhibit a solid-like structure dominated by elasticity. With the synergistic effect of CNC and amine compounds, the commercially available olive oil, soybean oil, and canola oil can all form stable emulsions. In addition, porous materials were successfully prepared by freeze-drying the prepared high internal phase emulsions. The present work reveals that HIPEs can be well stabilized by CNCs and amines at very low concentrations through hydrogen bonds. The results are also inspirable to develop eco-friendly HIPEs in cosmetics and food science.
研究领域:
胶体与界面科学
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材料科学
·
食品科学
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药剂学
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纳米技术
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Shuo Liu,Fangxu Li
In order to overcome the limitations of fatty amines (FAS) and reduce consumption and costs, this study developed a high-efficiency flotation system that FAS with methyl isobutyl methanol (MIBC). Single mineral flotation results showed that MIBC enhanced the collecting ability of decamine (DCA), dodecylamine (DDA), tetradecylamine (TDA), and hexadecylamine (HCA) while reducing their dosage. At pH 3, recoveries for DCA, DDA, TDA, and HCA were 63.22 ± 1.34 %, 86.284 ± 4.33 %, 72.30 ± 3.34 %, and 40.02 ± 2.27 %, respectively. With MIBC added, these increased to 89.43 ± 1.87 %, 89.58 ± 2.66 %, 73.38 ± 4.27 %, and 79.60 ± 2.23 %. Batch flotation experiments also demonstrated that lepidolite recovery by DDA and HCA rose from 96.64 % and 36.47–96.70 % and 98.29 %, respectively. Surface tension and viscosity detection revealed that the addition of MIBC to FAS resulted in a decrease in surface tension and an increase in solution viscosity. The adsorption, zeta potential, contact angle and foaming property tests indicated that MIBC can enhanced the recovery of lepidolite by adjusting the adsorption densities of DCA and DDA, as well as modifying the bubble properties of TDA and HDA in the flotation pulp. These findings highlighted the critical role of bubble properties in lepidolite flotation systems, going beyond mere hydrophobicity effects.
研究领域:
矿物加工工程
·
表面化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）