Inorganics
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2025
·Vol. 13
·期 9
·296
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IF 3
Ming Huang,Shunyan Ning,Juan Liu,Lifeng Chen,Mohammed F. Hamza,Yuezhou Wei
This work develops a novel phosphate-functionalized extraction resin (HEHEHP + Cyanex272)/SiO2-P via the vacuum impregnation method for efficient separation of light rare earth element impurities from lanthanum (La3+) in nitric medium through synergistic extraction. Batch experiments have demonstrated superior adsorption selectivity toward impurity ions over La3+in a pH 4 nitric acid solution. Column studies confirmed exceptional performance under ambient conditions, achieving a lanthanum treatment capacity of 120.6 mg/g and over 98% impurity removal, which surpasses most reported values. Notably, this purification process enables direct production of purified La3+solutions through a single-column system without desorption, significantly enhancing efficiency and reducing costs. Mechanistic insights revealed combined ion exchange and coordination interactions between metal ions and P-OH/P=O groups, corroborated by advanced characterization and density functional theory calculations. These findings indicate a higher binding affinity of light rare earth compared with La3+. This strategy provides a scalable approach for ultra-high-purity lanthanum compound production in advanced optical and electronic applications.
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JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Wei-Qi Xie,Yi-Xian Gong
This investigation established an innovative gas-evolving headspace technique for determining vanadium pentoxide. The methodology capitalizes on quantitative CO 2 measurement via GC where the target analyte undergoes redox transformation with oxalic acid under acidic conditions within a sealed vial system. Experimental validation confirmed the technique's robust performance characteristics, exhibiting excellent measurement reproducibility and satisfactory spike recovery rates across validation samples. This automated headspace GC approach presents significant advantages for industrial-scale analysis of vanadium pentoxide products. Moreover, this novel method offers a template for developing indirect quantifications via gas-evolving headspace analysis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Huan Wen,Xizi Wu,Zelong Sun,Zhangyue Zheng,Junxin Chen,Jia Wu,Shibin Yin
The 5-hydroxymethylfurfural electrooxidation reaction (HMFOR) stands out due to the value-added production and mild conditions. However, its catalytic efficiency is hampered by sluggish kinetics. Herein, with a focus on optimizing the adsorption and activation of reaction molecules, a Co 5.47 N-W 5 N 4 heterostructure catalyst is constructed for efficient HMFOR. The heterogeneous interface formed between Co 5.47 N and W 5 N 4 synergistically enhances the adsorption and activation of substrate molecules through electronic structure modulation and dual-site hydrogen bonding interactions. Meanwhile, the interfacial electron transfer from Co 5.47 N to W 5 N 4 facilitates the formation of high-valent cobalt species (Co 3+ /Co 4+ ), which is critical for activating formyl and hydroxymethyl groups. Furthermore, the hierarchical nanoparticle-nanosheet architecture provides abundant active sites while promoting efficient mass transport. These combined effects render Co 5.47 N-W 5 N 4 with enhanced HMFOR performance, along with a 5.80-fold increase in the rate constant for the rate-determining step. This work puts forward an approach for developing efficient HMFOR catalysts by promoting the adsorption and activation of reaction molecules.
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Petroleum Science
·
2025
·
IF 6.1
Chuan-Hao Zhang,Qi Dong,Fei Wang,Ning-Yue Lu,Feng Yu,Bin-Bin Fan,Rui-Feng Li
Deep hydrogenation of polycyclic aromatic hydrocarbons (PAHs) into jet fuel is an important strategy for the upgrading of light cycle oil (LCO). Zeolite-supported metal catalysts have exhibited good catalytic performance for hydrogenation of PAHs under relatively mild conditions. However, the impacts of acidity variations in zeolite supports, arising from the differences in framework Al (Al F ) distribution on the catalytic behavior of zeolite-supported metal catalysts in the deep hydrogenation of PAHs remains unclear. Herein, two series of mesoporous ZSM-5 samples, that is ZSM-5-E- x and ZSM-5-F- x , with the differences in Al F distribution but similar Si/Al ratios, were prepared in the crystallization system with or without NaOH. The results of NH 3 -TPD, Pyridine-IR, N 2 adsorption-desorption and SEM reveal that two series of HZSM-5 samples have similar acid density and acid strength, textural properties, morphology and particle size. However, the results of XPS, 27 Al MAS NMR, 2,6-Ditert-butylpyridine-IR, catalytic cracking of 1,3,5-triisopropylbenzene and the controlled reactions as well as DFT calculation indicate that the higher enrichment degree of Al F on the external surface and the suitable arrangement mode of Al F in ten-membered ring (10-MR) of HZSM-5-F- x compared to HZSM-5-E- x in case of the similar Si/Al ratios, result in Pt/HZSM-5-F- x exhibiting remarkably-improved deep hydrogenation performance of phenanthrene (PHE) compared to Pt/HZSM-5-E- x . Particularly, the selectivity to perhydrophenanthrene (PHP) over Pt/HZSM-5-F-50 can reach above 99.0% at a conversion of PHE (>99.0%). Furthermore, Pt/HZSM-5-F-50 exhibits well reusability. This work helps to clarify the impact of Al F distribution in ZSM-5 on catalytic hydrogenation performance for PAHs, providing valuable guidance for design and development of efficient catalysts for the hydrogenation of PAHs.
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CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Shuting Wen,Linlin Zhou,Ling Chen,Yaoguo Fang,Qian Cheng,Haifeng Yu,Hao Jiang
High-safety and low-cost Na 4 Fe 1.5 Mn 1.5 (PO 4 ) 2 (P 2 O 7 ) (NFMPP) is a highly promising cathode for Na-ion batteries (SIBs), offering a higher energy density than typical NFPP. However, its performance is hindered by Na/Mn anti-site defects and Jahn-Teller (J-T) distortion, resulting in voltage hysteresis and sluggish Na-ion diffusion kinetics. Herein, we demonstrate a high-rate and long-life NFMPP cathode by synergistically optimizing the initial molar ratio of Na-ion to transition metal (Na/TM) and vanadium (V) doping. The Na/Mn anti-site defects have been greatly alleviated from 5.9 % to 2.2 %, effectively suppressing the voltage hysteresis of Mn 2+ /Mn 3+ redox plateau. Meantime, the electron-rich V doping with strong V-O bonds (541 kJ/mol) exhibits strong interaction with Mn, significantly reducing the effect of J-T distortion on Na-ion diffusion. As a consequence, the optimized NFMPP cathode delivers a superior initial charge capacity of 115.1 mAh/g at 0.1C and achieves a high reversible energy density of 334 Wh/kg, surpassing many reported phosphate-based cathodes. It also exhibits exceptional cycling stability, retaining 94.1 % of its capacity after 500 cycles, making it a highly competitive candidate for next-generation SIBs.
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Advanced Powder Materials
·
2025
·
IF 24.9
Shuai Zhang,Kittima Lolupiman,Dongdong Zhang,Zixuan Gao,Rungroj Chanajaree,Xinyu Zhang,Jin Cao,Jiaqian Qin
Aqueous zinc-ion batteries (AZIBs) offer promising safety and affordability, but suffer from dendritic Zn growth and parasitic side reactions at the electrode-electrolyte interface. Herein, we construct a dual-region interfacial modulation framework by molecularly reconfiguring the Helmholtz double layer via trace methyl methacrylate (MMA). Exploiting its amphiphilic and functionally asymmetric architecture, MMA enables a coordinated interfacial reconstruction that disrupts Zn 2+ solvation in the outer Helmholtz plane, builds a chemisorbed coordination layer in the inner plane, and modulates local interfacial chemistry with spatial precision. This dual-region regulation collectively suppresses water reactivity, facilitates Zn 2+ desolvation, and drives crystallographically preferred deposition along the (101) plane, promoting lateral growth and mitigating dendrite formation. As a result, symmetric Zn||Zn cells exhibit over 4200 hours of stable cycling at 1 mA cm -2 and maintain 1100 hours of operation at 2 mA cm -2 , even at 0 °C. Zn||Ti half-cells achieve a Coulombic efficiency of 99.83%, while Zn||NH 4 V 4 O 10 full cells deliver 93.92% capacity retention after 400 cycles at 2 A g -1 , and preserve 85.3% after 300 cycles at 0 °C. This work demonstrates a scalable, mechanism-driven electrolyte design paradigm for dendrite-free and high-performance aqueous Zn metal batteries.
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Foods
·
2025
·Vol. 14
·期 18
·3181
·
IF 5.1
Fuwei Guo,Yuanfang Jiao,De Zhang,Zhi Yu,Dejiang Ni,Han Huang,Yuqiong Chen
The genusCitrusconsists of Tangerines (Citrus × reticulata), Mandarins (Citrus × reticulata), Oranges (Citrus × sinensis), Grapefruits (Citrus maxima), Lemons (Citrus × limon), and other citrus fruits. This study investigated the effects of 74 different citrus species and harvesting time on the quality of citrus dark tea using Hubei green brick tea as the raw material. Oranges (Citrus × sinensis) were found to outperform other species in improving the quality of citrus dark tea. Additionally, the impact of orange harvesting time (August to December) on the quality of orange dark tea was investigated by using the Peach leaf orange with the highest sensory score as the subject of the study. Results revealed that harvesting time can considerably impact the flavor quality of orange dark tea, but not its infusion color or scent. Specifically, the orange dark tea processed with September-harvested Peach leaf orange exhibited a strong fruity scent, a sweet and smooth flavor, and a harmonious tea and fruit aroma. With the delay of harvesting time, a downtrend was observed in the content of soluble proteins, flavonoids, hesperidin, synephrine, and limonin, as well as total volatile components, with the largest decrease in synephrine and flavonoids. However, the polysaccharide content increased in the peel of Peach leaf orange. Functional analysis revealed that the delay of harvesting time can diminish the inhibitory capacity of orange-dark tea on α-glucosidase and α-amylase. Organoleptic quality and physiological activity analysis demonstrated September as the optimal time for harvesting Peach leaf oranges for processing orange dark tea.
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Foods
·
2025
·Vol. 14
·期 19
·3297
·
IF 5.1
Anthony Pius Bassey,Chaoxiong Meng,Yin Zhang,Fan Wang,Mustapha Muhammad Nasiru,Han Wu,Isaiah Henry Ibeogu,Linlin Fan,Xiaoli Liu
This study developed antimicrobial composite coatings from gelatin (GL) and carboxymethyl chitosan (CMCS) functionalized with carvacrol (CA) as a natural alternative for the preservation of strawberries. Films incorporated with 0%, 1.5%, and 3% CA were characterized by their physical, mechanical, and structural properties. The addition of CA significantly improved opacity, tensile strength, elongation-at-break, and thickness, while reducing water vapor permeability, moisture content, and solubility (p< 0.05). Spectroscopy and microscopy also confirmed CA’s uniform dispersion within the matrix. During 14 days of storage at 4 °C, strawberries coated with GL/CMCS/CA-3% significantly reduced weight loss (50.91%) and fungal contamination, improved firmness (79.31%), and maintained color and pH. Conversely, uncoated strawberries showed rapid declines in soluble solids, acidity, phenolics, anthocyanins, vitamin C, and antioxidant activity (p< 0.05). Microbial growth was effectively suppressed in coated fruits, while sensory profiles were drastically impaired in uncoated samples at the end of storage (p< 0.05). These results demonstrate that GL/CMCS/CA coatings can effectively preserve strawberry quality and extend shelf life without synthetic preservatives.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Weichen Zeng,Yunan Gao,Xiaofei Li,Han Zhang,Yufei Cheng,Xueding Jiang,Hailong Wang
Antimony-doped tin dioxide reactive electrochemical membranes (ATO-REMs) exhibit robust catalytic activity, yet their large-scale application is hindered by the laborious multi-step synthesis of the conventional sol-gel method. Herein, we propose a facile electrodeposition strategy for fabricating ATO-REMs, involving sequential deposition of Sb and Sn on porous Ti substrates followed by thermal annealing. This method achieved uniform distribution of interconnected ATO clusters with low charge transfer resistance and high electrocatalytic activity. Through systematic analysis of experimental conditions and electrodeposition processes, a comprehensive mechanistic framework was established to elucidate how operating conditions and synthesis parameters influence electrocatalytic performance. By tuning the electrodeposition process, the optimized electrodeposited ATO-REM (EPATO-REM) achieved 99.1% removal of sulfamethoxazole (SMX) during single-pass filtration with a low energy consumption of 0.5 kWh m −3 , outperforming the conventional sol-gel-derived ATO-REM. Further investigations revealed that SMX degradation was driven by •OH oxidation and direct electron transfer, with seven intermediates identified and degradation pathways proposed. Furthermore, EPATO-REMs exhibited oxidation stability during 8-h operation, universal efficacy for diverse contaminants, and practical applicability in complex water matrices. This work provides a facile and scalable alternative to the labor-intensive sol-gel method for ATO-REM fabrication, advancing the development of high-performance REMs for water treatment.
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CHEMISTRY & BIODIVERSITY
·
2025
·
IF 2.5
Jiafu Lin,Jihui Lin,XiaoYu Tao,Dan Zhang,Siwei Chen,Xiujuan Fu,Yu Luo,Jiaqi Zheng,Linyu Liu,Hong Niu
Pectin derived from the fruit of Clausena lansium (Lour.) Skeels, commonly known as Wampee, possesses diverse bioactivities and holds significant potential for applications in food products. To broaden Wampee's application range, deep eutectic solvent (DES) was optimized for pectin extraction using response surface methodology. The fundamental and functional properties of DES-extracted pectin (D-CP) were compared to water-extracted pectin (W-CP). Extracted under the optimal extraction conditions (oxalic acid:choline chloride ratio was 1:1, reagent content was 10.2% (w/v), extraction time was 154 min, temperature was 82.5°C, and liquid: solid was 10.0 mL/g), D-CP was identified as Rhamnogalacturonan-dominated pectin. D-CP's molecular weight (129 kDa) and degree of esterification (61.05%) were lower than those of W-CP. However, D-CP exhibited a superior yield (18.09%) and enhanced functional properties, including higher purity, improved emulsifying stability and activity, better foaming capacity, and stronger foam stability. Additionally, D-CP demonstrated excellent solubility alongside notable antioxidant activities. Overall, these advanced properties highlight D-CP's promising potential for applications in the food and pharmaceutical industries, with DES proving to be an effective solvent for efficient extraction of bioactive pectin from Wampee. Graphical
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NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Lijun Wang,Aiying Hou,Min Wang,Armando A. Paneque Quevedo,Qiaoli Yue
In this study, blue-fluorescent black phosphorus quantum dots (BPQDs) were synthesized through a combination of liquid-phase ultrasonication and solvothermal techniques. Black phosphorus (BP) crystal powder, isopropyl alcohol (IPA) and NaOH were employed as precursor, solvent, and to adjust the reaction environment, respectively. BPQDs exhibited optimal fluorescence characteristics, with excitation and emission wavelengths measured at 322 and 392 nm, respectively. Notably, 4-nitrophenol (4-NP) induced static fluorescence quenching of BPQDs, causing a reduction in their quantum yield from 7.8% to 4.4%. A linear correlation was observed between the fluorescence quenching intensity and 4-NP concentration, spanning a range from 0.1 µM to 120 µM, with a limit of detection as low as 43 nM. Furthermore, a portable test strip was developed, which undergoes a color change to yellow upon exposure to 4-NP, enabling selective detection. By analyzing the color of the strip through smartphone photography to obtain red, green and blue (RGB) values, a linear relationship was established between R/B ratio and 4-NP concentration within the range of 10-150 µM, facilitating quantitative analysis. This study demonstrates the effectiveness of BPQDs-based fluorescent probes and portable test strips for the detection of 4-NP in various water samples, including lake water, tap water and laboratory waste effluent.
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RESEARCH ON CHEMICAL INTERMEDIATES
·
2025
·
IF 3.5
Han Lijuan,Chai Keyi,Du Xinyu,Wang Xiangtong,Zhang Ping,Wang Xiaotian
Tetracycline poses a serious threat to the ecosystems even if the concentration is very low due to its structural stability. In this work, a series of magnetic separable Fe 3 O 4 /ZnO/g-C 3 N 4 composite with excellent degrading tetracycline performance were prepared. And, repeated calcination method was used to strengthen the bonding effect of single component improving the formation of heterojunction. Electrochemical analysis confirmed that the ZnO/g-C 3 N 4 and Fe 3 O 4 /ZnO/g-C 3 N 4 heterojunctions were generated, effectively accelerating the electron separation and transfer in photocatalytic process. The characterization results also showed that ZnO and Fe 3 O 4 nanoparticles are evenly distributed on the surface of g-C 3 N 4 . With the increase of the loading mass concentration of ZnO/g-C 3 N 4 , the degradation rate of tetracycline on Fe 3 O 4 /ZnO/g-C 3 N 4 composite increased and then decreased. The degradation rate of tetracycline on optimal Fe 3 O 4 /ZnO/g-C 3 N 4 composite reached to 94.50% while the TC mineralization rate reached to 61.61% under visible light irradiation for 120 min, exhibiting excellent photocatalytic performance. Due to the effect of Fe 3 O 4 , Fe 3 O 4 /ZnO/g-C 3 N 4 materials exhibited good magnetic property, which is beneficial to separation and recovery of photocatalysts. The reusability experiment showed that the degradation rate of tetracycline was 80.66% after five cycles, displaying good reusability.
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