JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Mengqi Wang,Ting Yang,Tiantian Yue,Zhong Wang,Jian Fang,Yuqing Liu
The interfacial interaction of carbon nanotubes (CNTs) significantly enhances the output capability of piezoelectric nanogenerators (PENGs). However, overcoming the limitation of low specific surface area in one-dimensional materials remains a significant challenge. This paper introduces a hydrothermal method for composite MOF (C-M) using CNTs and MOF-5, demonstrating localized co-doping between them. Coaxial electrospun piezoelectric fiber membranes (C-MNF) were then prepared using PVDF/PAN as the matrix. Benefiting from C-M’s excellent crystallinity and its synergistic interaction with the polymer matrix, the C-MNF-based PENG showed a 125 % increase in output voltage, reaching ∼25 V, compared to coaxial membranes simply mixing MOF-5 and CNTs. As a result, its short-circuit current was ∼1.8 μA, with a piezoelectric coefficient d 33 of ∼400 pC N −1 . Consequently, this material exhibits superior piezoelectric output capabilities, paving the way for future functional material fabrication.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
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IF 20.2
Jianfeng Shan,Zheng Chen,Dengfeng Wang,Guangyu Zhang,Sheng Li,Chuan Sun,Dongchao Wang,Caixia Ju,Xuelan Zhang,Lei Li
Catalytic conversion of ethyl levulinate (EL) to γ-valerolactone (GVL) is a pivotal reaction in biomass conversion. Here, Pd/CoO x was studied and showed much higher EL hydrogenation reactivity than other Pd based catalysts. Further investigation revealed that EL conversion increased linearly with PdCo alloying degree elevating, indicating that PdCo alloy is ascribed to the superior reactivity of Pd/CoO x . Interestingly, Pd/CoO x with low Pd loading also exhibited excellent hydrogenation performance, and surface enrichment of Pd was identified as the main reason. Additionally, employing HZSM-5 as a co-catalyst not only accelerated ethyl 4-hydroxypentanoate lactonization, but also dramatically improved the stability of Pd/CoO x . As a result, a 99.1 % yield of GVL was achieved by the synergistic catalysis of HZSM-5 and Pd/CoO x containing 0.58 wt% Pd, which is comparable with the best catalyst ever reported in alkyl levulinate hydrogenation to GVL. Furthermore, the insights gained from this work have broad potential applications in biomass hydrogenation.
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MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Yuying Han,Xingyu Hou,Yali Li,Xiaopeng Yang,Xue Sun,Xinxin Bian,Na Sun,Yuguang Lv,Lixin Ding,Ze Li
This study utilized Panax notoginseng leaves carbon dots (PN-CDs) with red and blue fluorescence to detect 5-hydroxyindoleacetic acid (5-HIAA). It is a straightforward one-pot hydrothermal technique using Panax ginseng leaves to synthesize these CDs. Under 400 nm excitation, 5-HIAA decreases the fluorescence intensity at 670 nm while enhancing the fluorescence intensity at 420 nm. The fluorescence intensity ratio (F 670 /F 420 ) exhibited a significant linear relationship over the 5-HIAA concentration range of 0–100 μM. Notably, smartphones could capture the observable color change of the PN-CDs under 365 nm UV exposure and perform RGB (red/green/blue) analysis for color quantification using the smartphone’s software. The detection limit for its fluorescence detection was determined to be 0.023 μM, whereas that of mobile phone detection was 0.36 μM. This study proposes a novel platform combining fluorescence sensing and cell phone technology, facilitating real-time analysis of 5-HIAA levels in human urine.
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Advanced Healthcare Materials
·
2024
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IF 10
Zongpu Han,Yixiong Lin,Xinyu Guo,Jieyun Xu,Xiaomeng Gao,Ruihan Yang,Yuan Zhao,Mixiao Gui,Linjun Zhang,Yuanlong Guo,Zetao Chen
The strategy of re-organogenesis provides an optimal framework for restoring complex organ structures and functions in adult damage. While the focus has often been on restoring organogenesis stem cells, there is limited investigations of reverting the environmental niche to support this approach. The guiding principle of “Nature selects the fittest to survive” drives the intricate dynamic changes in cellular events within the niche environment, especially through immune surveillance. The extracellular matrix (ECM) serves as the “self-associated molecular patterns” of the niche, containing extensive data on cell-niche reaction data and acting as the active tuner of immune surveillance. In this study, hyaluronic acid (HA) is identified as a unique component of the ECM in cranial osteo-organogenesis. Mechanistically, HA activates the Cluster of Differentiation 44 (CD44)-Mitogen-Activated Protein Kinase (MAPK)/Extracellular Signal-Regulated Kinase (ERK)-Ets Variant 1/5 (ETV1/5)- Mannose Receptor C-Type 1 (MRC1) axis in macrophages, establishing a distinct immune surveillance during osteo-organogenesis. Furthermore, HA is utilized as a novel engineered material for an “Osteo-organogenesis niche”, restoring immune surveillance and synergistically regulating stem cells to achieve re-osteo-organogenesis in cranial defects of rats. Taken together, the study unveils a previously unknown strategy for leveraging re-organogenesis by utilizing “organogenesis niche” ECM engineered materials to manipulate immune surveillance, thereby comprehensively regulating stem cells and other tissue cells effectively for re-organogenesis.
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RESEARCH ON CHEMICAL INTERMEDIATES
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2024
·Vol. 50
·期 7
·3033-3052
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IF 2.8
Huang Guihua,Yang Zizhen,Li Sijia,Wang Zhengwei,Xu Jundong,Zheng Shuqin
In-situ crystallization was used to prepare the composite molecular sieve ZSM-5/MOR (Z/M) successfully, and FeLa-ZSM-5/MOR (FeLa-Z/M) was obtained by loading Fe and La on the surface of the composite molecular sieve by hydrothermal method. The composite molecular sieve combined the water absorption of mordenite (MOR) and the mass transfer performance of ZSM-5, and effectively improved the surface area and porous structure. This zeolite improved the dispersion performance of active sites in Z/M and reduced mutual aggregation between particles, which was conducive to catalytic efficiency. The addition of La increases the number of oxygen vacancies, according to XRD, TEM, XPS, UV-DRS, and other data analyses. Because doping of La stretched the Fe–O bond, reduced the oxygen vacancies’ formation energy, and promoted oxygen vacancies’ formation, which was an essential reason for Fe 3+ reduction and Fe 3 O 4 formation. The addition of La also had a highly dispersed effect on Fe. Under the optimal conditions, with a FeLa mass ratio of 1:1, FeLa-Z/M at 25 mg, H 2 O 2 at 0.5 ml, and a pH of 3, the degradation rate of IC was found to be 97.8% and 99.5% in 5 min and 10 min respectively. Analysis of the reaction indicated that the catalyst followed a first-order reaction kinetic. Free radical quenching experiments confirmed that the main free radicals in the FeLa-Z/M Fenton-like system were hydroxyl radicals (·OH), suggesting a possible catalytic mechanism. Furthermore, the synthesized FeLa-Z/M catalyst exhibited superior performance compared to other methods of IC removal, demonstrating high reusability and efficient degradation even after multiple uses. Graphical abstract
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Small
·
2025
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IF 12.1
Shufang Zhou,Jintong Xu,Jiayi Wang,Nurimangul Muntiza,Qiliang Deng
The reversible photo-transformation metal–organic framework (MOF) capable of changing properties by surface chemical modification has huge potential in various industrial fields. However, such material is still rare. Herein, a crystalline 3D MOF constructed by 5-boronobenzene-1, 3-dicarboxylic acid, and zinc sulfate (Zn-BBDA) is reported, where the boronic groups are spontaneously change into the hydroxyl groups during the preparation process. The resulted MOF possesses the orderly distributed hydroxyl groups in interlayers. The photo-responsive properties of the resulted MOF are explored. The results indicate that the appearance color and fluorescence emission of the resulted Zn-BBDA can be simultaneously adjusted based on the oxidation-reduction reaction of the hydroxyl group. The transformation degree of the MOF can be quantitatively monitored by fluorescence emission or Red, Green, Blue (RGB) readout. The response mechanism of the resulted Zn-BBDA is revealed. The surface properties of the resulted Zn-BBDA before and after irradiation are also investigated. The present material exhibits a bright future in the field of anti-counterfeiting and antibacterial treatment. The research provides new views in exploring novel photo-response materials.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
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IF 3.9
Shuxing Zhang,Xiaoshu Ding,Yanji Wang
5-Amino-1-pentanol is an important pharmaceutical intermediate used in the synthesis of anti-inflammatory and anticancer drugs. The direct hydrogenolysis of furfurylamine to 5-amino-1-pentanol has the advantages of a simple process route and high atom utilization. In this paper, for Pt/ZrO2 catalysts, the effects of different Pt loading and calcination temperatures on catalyst activity, selectivity, and surface properties such as Pt nanoparticle size, acidity and alkalinity, and the ratio of Pt0/(Pt0+Pt2+) were investigated. Through the study of the relationship between catalyst preparation conditions, furfurylamine hydrogenolysis reaction performance, and surface properties, it was found that moderate Pt nanoparticle size, higher Pt0/(Pt0+Pt2+) ratio, and more acidic sites favored furfurylamine hydrogenolysis. The higher number of basic sites favors the dispersion of Pt metal. The results of in situ FTIR show that the amino group of furfurylamine is adsorbed on the acidic site of Pt/ZrO2, and the furan ring is adsorbed on Pt nanoparticles, which is beneficial to the hydrogenolysis of furfurylamine.
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SOLID STATE SCIENCES
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2025
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IF 3.3
Yanlin Wang,Hao Liu,Haoyu Liu,Hong Yuan
A series of nanosized ZSM-5 (SNZSM-5) zeolites has been synthesized by the seed-assisted method using silicalite-1 as seeds. Catalytic cracking of oleic acid to produce light olefins and light aromatics using SNZSM-5 as the catalyst was performed using a laboratory-scale fixed-bed reactor. The effects of the crystallization time and Si/Al molar ratio on the morphology and multilamellar structure of SNZSM-5 were studied to reveal how these properties affect the catalytic performance. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, temperature-programmed desorption of ammonia, and N 2 physisorption and desorption were performed to characterize the morphological features, acidities, and pore structures of the SNZSM-5 nanozeolites. Compared with conventional ZSM-5 zeolite, the SNZSM-5 nanozeolites possessed smaller particle diameters (90–450 nm), and they thus contained more intercrystalline voids. The Brunauer–Emmett–Teller surface areas (211–309 m 2 g −1 ) and mesopore volumes (0.08–0.27 cm 3 g −1 ) were both higher than those of ZSM-5 zeolite. Moreover, owing to the larger specific surface areas of the nanocrystals, more acidic sites can be exposed. Therefore, the SNZSM-5 nanozeolites showed higher catalytic activity and stability than conventional ZSM-5. The catalytic activity could be sustained for up to 35 h. Under the conditions of a reaction temperature of 500 °C, an oleic acid flow rate of 0.04 mL min −1 , and a nitrogen flow rate of 30 mL min −1 , the SNZSM-5 nanozeolite prepared with a Si/Al molar ratio of 16 showed the highest catalytic activity, producing up to 67 % yield of light olefins and showing 14.5 % selectivity for light aromatics.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yan Chen,Ming-Kun Yang,Suo-Luan Zhou,Cheng-Nuo Hu,Yun-Han Yang,Zhen Zhang,Li-Juan Yang
A novel quaternized pillar[5]arene polymer (P5-P5M-Cl) was synthesized by quaternization reaction, and characterized via XPS, FT-IR, NMR, XRD, TGA, BET, and SEM. P5-P5M-Cl can be used for the efficient removal of iodine, toxic anionic dyes, and microbial pollutants. The results demonstrated that the maximum adsorption capacity of P5-P5M-Cl for iodine in the gas phase as well as for iodine, methyl orange, and fluorescein sodium in the aqueous phase were 1.92 g/g, 3.63 g/g, 181.8 mg/g, and 86.7 mg/g, respectively. Recyclability experiments have demonstrated the good reusability of P5-P5M-Cl. Meanwhile, the adsorption mechanism was explained by molecular simulation, and the results showed that electrostatic, host-guest, hydrogen bonding, mesoporous, and π-π interactions play crucial roles in the adsorption process. In addition, the presence of abundant quaternary ammonium cationic groups enables effective removing Staphylococcus aureus and Escherichia coli , achieving removal rates of 99.5 % and 80.0 %, respectively. These results demonstrate that P5-P5M-Cl is a multifunctional adsorbent capable of effectively removing radioactive iodine, organic dyes, and microbial pollutants.
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POLYMER
·
2024
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IF 4.1
Jing Xu,Pingbo Zhang,Mingming Fan,Pingping Jiang,Shijun Chen,Xunxun Sheng
To improve the weak interaction between poly (butylene adipate‐co‐terephthalate) (PBAT) and poly (lactic acid) (PLA) blends, this study added modified metal-organic frameworks (MOFs) to enhance the interfacial bonding strength between PBAT and PLA. MOF-5 nanoparticles were synthesized by room temperature synthesis and modified with KH-560. PBAT/PLA/KH-560@MOF films were prepared by solvent casting. The microscopic morphology, mechanical properties, thermal properties, hydrophobicity, water vapor transmission rate and antimicrobial properties of the composite films were investigated. The results showed that KH-560@MOF nanoparticles were uniformly dispersed in the polymer matrix of PBAT and PLA, reducing phase interface defects. Mechanical properties of PLA/PBAT improved in the presence of KH-560@MOF. The breaking elongation and tensile strength values were maximized when adding 1 wt% KH-560@MOF. Doping of KH-560@MOF improves hydrophobicity and water vapor transmission rate of films. Zn 2+ in MOF-5 imparts antimicrobial properties to the film, showing antimicrobial activity against both Gram-positive and Gram-negative food-borne pathogens (i.e., E. coli and S.aureus ). This work enriched the design of compatibilizer for the PLA/PBAT blend and provided a novel approach for expanding the application of MOFs.
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INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Zhaoying Li,Langqi Shi,Daokuan Liang,Feixing Li,Lianghuan Wei,Weizun Li,Xianghao Zha
The quality of bio-oil produced from fast pyrolysis of lignocellulosic biomass needs urgent upgrading due to its undesirable characteristics. In this study, HZSM-5 modified with different alkali solutions is used to catalytic fast co-pyrolysis of cotton stalk and polypropylene, investigating pyrolysis temperatures, catalysts modified with different alkali solutions, the cotton stalk (CS) to polypropylene (PP) ratio, and the feedstock to catalyst ratio. Thermogravimetric experiments revealed that PP undergoes rapid decomposition between 408 °C and 465 °C, during which a substantial amount of hydrogen free radicals is released. These radicals subsequently react with oxygen-containing compounds emitted by carbonaceous substances CS, thereby facilitating weight loss and minimizing coke formation. The FTIR results also indicate that the presence of PP significantly increases the transmittance of O-H groups at 3600–3000 cm −1 and C-O groups at 1290–900 cm −1 compared to CS. The TPAOH-modified HZSM-5 possesses a mesoporous structure and porous channels, facilitating the completion of deoxygenation of pyrolysis vapors at the acid sites. CFP of CS over HZSM-5 modified TPAOH (1.5 mol/L) at 600 °C is carried out, resulting in the highest hydrocarbon content in the bio-oil reaching 63.3 %. Concurrently, the BTEX concentrations attain their maximum values of 6.5 %, 12.9 %, 3.4 %, and 12.6 %. In addition to the hydrocarbon pool mechanism, the Diels-Alder reaction between furan and olefin is a crucial synergistic effect for generating aromatics. Upon the addition of PP in a 1:1 ratio, the contents of BTEXs attain maximum values of 8.1 %, 15.5 %, 2.3 %, and 15.5 %. Response surface methodology (RSM) indicates that the organic alkali concentration used for catalyst modification is the most significant factor influencing aromatics generation. Overall, this study aims to improve bio-oil quality and detail the reaction mechanism.
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Catalysis Science & Technology
·
2025
·
IF 4.2
Fan Bai,Yanjiao Gao,Yongbo Xiao,Jing Xiao
The utilization of sodium percarbonate (SPC, Na₂CO₃·1.5H₂O₂) as an alternative to H₂O₂ for degrading recalcitrant organics in advanced oxidation is emerging due to SPC’s stability, safety, and pH adaptability. This study innovatively employed Cu(II)-activated SPC to remove reactive black 5 (RB5), focusing on Box-Behnken design (BBD), mechanism profiling, application performance, and energy boosting. BBD and response surface methodology optimized conditions (2.592 mM Cu(II), 0.022 mM SPC, pH 7.18) achieved 90.08% RB5 removal (R² = 0.9997, prediction error < 1%), with the model showing strong predictive capability. Quenching experiments and liquid chromatography-mass spectrometry (LC-MS) revealed that 1O2, O2•−, and CO3•− were the main active species in oxidizing RB5 through three possible pathways. Cl⁻, SO₄²⁻, NO₃⁻, and HCO₃⁻ (0.1-5.0 mM) contained in the ultrapure water did not inhibit RB5 removal in the Cu(II)/SPC system, and the Cu(II)/SPC could remove 76.1% of RB5 in industrial wastewater, demonstrating the potential for practical application of this system. The application of energy (heating, ultraviolet light, ultrasound) significantly improved the effectiveness of the Cu(II)/SPC system in degrading RB5; thus, these means can be used to assist in the activation of SPC in real dye wastewater treatment. This work provides theoretical and practical insights for SPC-based advanced oxidation processes.
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