Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Zhaohui Fei,Chi Jiang,Qunwei Tang,Yingfei Hou
To solve the scarcity of fresh water, reverse osmosis (RO) technology for seawater desalination and wastewater reuse has been developed rapidly. However, the performance of RO is limited by poor selectivity towards certain harmful small molecule constituents (e.g., boron in seawater and N-nitrosodimethylamine in wastewater) and the permeability-selectivity trade-off. Herein, a metal polyphenol network interlayer including both hydrophobic zone and monomer adsorption zone is proposed to optimize interfacial polymerization (IP) process for fabrication of RO membrane . This heterogeneous characteristic is endowed by well-chosen phenol (i.e. TTSBI) and metal (Ni). The physicochemical properties of the substrate are also optimized. An ultra-selective RO membrane with thinner separation layer, higher crosslinking degree and larger surface area is obtained. The RO membranes exhibit separation performance beyond the upper selectivity limit for NaCl and hazardous small molecules. The membrane water permeance is 3.50 L m −2 h −1 bar −1 while the NaCl rejection is 99.5 %. Meanwhile, the mechanism of the interlayer influencing IP process is investigated by combining molecular simulation and experimental methods. Our work provides a novel design direction of substrate used for fabricating RO membrane with outstanding performance.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Changyong Zhao,Hanyan Wu,Xuejie Gao,Chen Cheng,Shuiping Cai,Xiaofei Yang,Runcang Sun
Challenges associated with lithium dendrite growth and the formation of dead lithium significantly limit the achievable energy density of lithium metal batteries (LMBs), particularly under high operating current densities. Our innovative design employs a state-of-the-art 2500 separator featuring a meticulously engineered cellulose acetate (CA) coating (CA@2500) to suppress dendrite nucleation and propagation. The C O functional groups in CA enhances charge transfer kinetics and triggering the decomposition of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), which leads to the formation of a more robust solid electrolyte interphase (SEI) composed primarily of LiF. Moreover, the introduction of polar functional groups in the CA enhances the separator’s hydrophilic properties, facilitating the uniform Li + flux and creating a conductive pathway for efficient lithium migration. As a result, the CA@2500 separator exhibits a high lithium-ion transfer number (0.88) and conductivity. The lithium symmetric cell assembles with the CA@2500 separator displays a stable cycling performance over 5500 h at a current density and capacity of 10 mA cm −2 and 10 mAh cm −2 , respectively. Additionally, LPF battery with CA@2500 separator shows an excellent capacity retention at 0.2 C with an average decay of 0.055 % per cycle. Moreover, a high capacity of 105 mAh g −1 is maintained after 500 cycles at 5 C with an average decay of only 0.027 % per cycle. This work achieved high stability of LMBs through simplified engineering.
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LANGMUIR
·
2024
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IF 3.7
Xinpeng Chen,Aijing Li,Ping Yao,Jiapeng Wang,Tieling Xing,Guoqiang Chen
In this work, sea urchin-like magnetic Fe3O4@CA/BNNS/AgNP composite microspheres were successfully prepared. The photocatalytic performance of composite microspheres for the organic dye rhodamine B (RhB) was systematically investigated under different conditions, and the catalytic degradation rate of RhB was as high as 95% within 60 min; after three cycles of recycling, the degradation rate of RhB was reduced by only 8%. The main active agents in the reaction are e– and •O2–. Fe3O4@CA/BNNS/AgNP microspheres prepared in this study exhibit photocatalytic and electrochemical properties, making them easy to separate. This work is not limited to the development of Fe3O4-based catalysts but also is expected to provide ideas for the research and progress of photocatalytic composite catalysts with electrochemical properties.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Han Zhang,Hanshu Sun,Yiping Zhao,Yang He,Li Chen
Grafting hyperbranched polymers on polymer membrane surfaces offers a promising route to desalination and boron removal. However, the functional modulation of hyperbranched polymers is still not fully realized, and the specific selective synthesis of terminal hydroxyl groups still needs further exploration. Here, we report a method to prepare high-performance adsorption membranes using hyperbranched polyglycerol (HPG) that can optimize the dendritic distribution of the terminal hydroxyl groups. Poly(caffeic acid) (PCA) was rapidly deposited on the surface of the poly(ether sulfone) (PES) membrane assisted by copper sulfate (CuSO4) and hydrogen peroxide (H2O2), and subsequently, HPG was grafted onto PCA coatings via a covalent bond. The prepared functional modified membrane exhibited excellent performance on salt and boron removal; especially, the maximum boron uptake was 1.661 mmol g–1 at an initial boron concentration of 5.0 mmol L–1, better than most of the traditional adsorption membranes reported. The boron adsorption on the membranes was fitted well with the pseudo-first-order adsorption kinetic model and Langmuir isothermal model. Strikingly, the regeneration efficiency could be recovered to 97% after 10 cycles of acid rinsing and desorption. The functional membrane had good application potential and research value in seawater desalination and boron removal.
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ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Wen-kui Li,Xiang-yun Fu,Yu-zhen Wu,Yong-hong Wang,Jing Zhang,Zhi-qing Ma
Green tablets for grain storage are urgently required, and intelligently controlled release of active ingredients based on functional nanomaterials is a promising strategy for the preparation of green and high-efficiency tablets. In this work, a polydopamine-doped nano-CaCO3 (nanoPCaCO3) with a diameter of 60–88 nm was prepared by a gas diffusion pore-opening strategy. The porous nanoPCaCO3 exhibited superior encapsulation capacity toward phenolic and ketone compounds based on pore filling, hydrogen bonding, and π–π interactions. After functional disintegrants and excipient addition, two kinds of nanoPCaCO3 tablets containing carvacrol (18.0%) and carvone (16.7%) were prepared, which had a novel humidity-controlled release mode based on the humidity-responsive reaction between nanoPCaCO3 and hygroscopic solid acids. At low relative humidity (RH), grain storage pests were hard to survive, and the release rates of active ingredients in the tablets were slow; at high RH, grain storage pests grew well, and the release rates of active ingredients were accelerated correspondingly. As a result, the 7 day cumulative release ratios of carvacrol and carvone from the tablets at 75% RH were approximately 3 times that at 40% RH. Besides, the tablets exhibited desirable fumigation activity; at 75% RH, the 19 day inhibition ratio against Aspergillus flavus attained 73.7%, and the 7 day fumigation mortality against Sitophilus zeamais reached 92.7%. The tablets can be efficiently used for grain storage pest control, and the porous nanoPCaCO3-supported humidity-controlled release mode can be extended for more high efficiency and functional medicament development.
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PHARMACEUTICAL DEVELOPMENT AND TECHNOLOGY
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2024
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IF 2.6
Yun Meng,Ye Cai,Mengyao Cui,Yuhang Xu,Long Wu,Xiang Li,Xiaoqin Chu
The aim of this study was to prepare a solid self-microemulsifying drug delivery system (S-SMEDDS) of cinnamaldehyde (CA) by spray drying technique to improve the oral bioavailability of CA. The preparation of CA S-SMEDDS with maltodextrin as the solid carrier, a core-wall material mass ratio of 1:1, a solid content of 20% (w/v), an inlet air temperature of 150 °C, an injection speed of 5.2 mL/min, and an atomization pressure of 0.1 MPa was determined by using the encapsulation rate as the index of investigation. Differential scanning calorimetry (DSC) revealed the possibility of CA being encapsulated in S-SMEDDS in an amorphous form. The in-vitro release showed that the total amount of CA released by S-SMEDDS was approximately 1.3 times higher than that of the CA suspension. Pharmacokinetic results showed that the relative oral bioavailability of CA S-SMEDDS was also increased to 1.6-fold compared to CA suspension. Additionally, we explored the mechanism of CA uptake and transport of lipid-soluble drugs CA by S-SMEDDS in a Caco-2/HT29 cell co-culture system for the first time. The results showed that CA S-SMEDDS uptake on the co-culture model was mainly an energy-dependent endocytosis mechanism, including lattice protein-mediated endocytosis and vesicle-mediated endocytosis. Transport experiments showed that CA S-SMEDDS significantly increased the permeability of CA in this model. These findings suggested that CA S-SMEDDS is an effective oral solid dosage form for increasing the oral bioavailability of lipid-soluble drug CA.
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FOOD CHEMISTRY
·
2025
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IF 9.8
Ya Yu,Mengting Yuan,Ling Zhou,Yanan Liu,Ya Chen,Dongxu Wu,Zhihong Chen,Qingqing Yuan,Yang Han,Juhua Wang,Xiuheng Xue
Cinnamaldehyde (CA), P-Anisaldehyde (PAA), N-heptanal (NHA) and Citronellal (CNA) were used to modify sodium caseinate (SC) as emulsifiers to stabilize β-carotene emulsion, and the binding mechanism of SC and spice aldehyde (SA) was discussed. The results showed that the binding of SA and SC was mainly driven by non-covalent interaction, especially hydrogen bonding. It was also found that CA may form covalent bond with SC through Schiff base reaction. Moreover, the combination of SA altered the structure of SC, enhanced its surface hydrophobicity, and improved its emulsifying property. The β-carotene has been better embedded by using CA-SC composite as surface stabilizer, and the droplets dispersed uniformly and with a droplet size of 222.65 nm, Emulsifying activity index (EAI) was 58.52 m 2 /g, emulsion stability index (ESI) was 42.22 min when the pH was 8.0. Thus, CA was better to be used to improve the emulsification stability of β-carotene by combining with SC as surface stabilizer.
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Alexandria Engineering Journal
·
2024
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IF 6.2
Xiangkun Li,Zhenhua Guo
This study presents a photo sensor for caffeine (CA) detection, employing gold nanoparticles (Au NPs) immobilized on bismuth vanadate on indium tin oxide substrate (Au-BiVO 4 /ITO). The characterization of the Au-BiVO 4 /ITO electrode was investigated by surface analysis, crystallography and electrochemical methods. The incorporation of Au NPs into the BiVO 4 structure has significantly increased the photocatalytic performance of the material, especially its photocurrent response. This modification has increased the photocurrent from the initial value of 200 µA to more than 300 µA. The Au-BiVO 4 /ITO PEC sensor demonstrated enhanced photocurrent responses to CA under visible light, compared to BiVO 4 /ITO. Under optimized conditions, the PEC sensor showed a linear correlation between analytical signal and CA concentration from 0.3 to 270 μM, with obtained detection limit of 0.08 μM. Using the standard addition way, it measured CA in serum and urine samples from athletes, achieving average recovery rates of 99.4 % in serum and 97.8 % in urine, which indicates high accuracy. Moreover, the results showing strong agreement with standard HPLC analysis and demonstrating high recovery efficiency. Furthermore, the sensor demonstrated excellent performance with acceptable figure of merit for CA measurement, making it suitable for reliable analytical applications in biological samples.
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ADVANCED ENGINEERING MATERIALS
·
2024
·Vol. 26
·期 15
·2400249
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IF 3.4
Yuanli Shen,Yu Xiang,Dhandapani Kuzhandaivel,Luyao Wang,Zixiang Weng,Longhui Zheng,Jianlei Wang,Qia Zhang,Lixin Wu
Carbon-based composite materials have garnered widespread attention in the field of personal thermal management (PTM). In these applications, constructing conductive fillers with a highly cross-linked network is key to achieving the rapid electrothermal conversion of materials. Herein, a novel carbon-based composite material is successfully developed using screen printing technology, with a waterborne polyurethane (WPU) matrix embedded with carbon nanotubes (CNTs) and calcein-modified graphene nanosheets (CAG). Due to the strong π–π conjugation interactions present in the highly cross-linked carbon-based network, the resulting CAG-CNTs/WPU composite forms a 3D conductive network, which not only demonstrates a significant synergistic effect but also facilitates efficient transport of electrons and phonons. Experimental results show that the CAG-CNTs/WPU composite possesses excellent electrothermal conversion properties and an upper high thermal conductivity (3.10 W m −1 K −1 ). At a low voltage of 5 V, the composite exhibits a rapid response, increasing to 50 °C in 20 s. This research not only highlights the importance of adopting environmentally friendly preparation methods but also emphasizes the synergistic role played by 2D graphene nanosheets and 1D CNTs in building an efficient 3D electrothermal network, which has significant scientific and application value in advancing PTM applications.
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CARBOHYDRATE POLYMERS
·
2024
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IF 10.7
Rui Luo,Fan Zhang,Jing-hui Yang,Nan Zhang,Yong Wang
Developing green and environmentally friendly biomass materials for energy storage and application is of great significance to sustainable development. Novel composite films containing cellulose acetate (CA) and carbonized polymer dots (CPDs) are reported herein. The CPDs have strong hydrogen bonding interactions with CA matrix, in which CPDs act as the physical crosslinking points and enhance the entanglement density of the matrix. And the composite films demonstrate a significant enhancement in breakdown strength ( E b ), reaching up to 520.58 MV/m with the addition of 0.1 wt% CPDs (1.62 times higher than 321.94 MV/m of pure CA). Furthermore, the discharging energy density ( U d ) achieves 2.55 J/cm 3 at 450 MV/m, which is 1.36 times higher than that of the pure CA film (1.87 J/cm 3 at 400 MV/m) and simultaneously, the energy efficiency ( η ) is maintained at 73.3 %. The Coulomb-blockade effect induced by the ultra-low content of CPDs effectively inhibiting carrier migration, and the enhanced entanglement density of the matrix improving mechanical properties and reducing polarization loss, mainly contribute to the enhanced dielectric performances. Furthermore, CPDs also improve the mechanical properties of the composite films apparently. This work provides some references for the fabrication of the next generation of environmentally friendly dielectric composite films.
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DESALINATION
·
2025
·
IF 9.8
Minfu Mo,Yaling Lin,Danni Lin,Xiaojuan Ma,Yubin Hong,Lihui Chen,Dong Wang,Liulian Huang
Cellulose acetate (CA) has attracted much attention in the preparation of ultrafiltration membranes due to its green and sustainable characteristics. However, its poor performance (separation and antifouling performance, etc.) limits the application of CA-based membranes in water treatment. In this work, we prepared a cellulose acetate ultrafiltration membrane with enhanced separation performance by enhancing the dissolution process of CA. The dissolution process of CA was controlled by adjusting the ratio of mixed solvent ( N , N -dimethylacetamide (DMAC) and N -methyl pyrrolidone (NMP)), which could tune the phase conversion rate, optimizing the pore structures of the membranes. Compared to the single solvent (M0, M8), the optimal membrane (M4) exhibited a finger-like pore structure and the lowest surface roughness, which was favorable for achieving high water flux. As a result, the M4 possessed a comparable pure water flux (335.8 L·m −2 h −1 ) which was higher than M0 (1.8 times) and M8 (1.7 times), while the BSA rejection rate reached 96.4 %. Besides, the M4 showed a stable separation performance in different operation pressures, BSA concentration, and long-term experiments. This work provided a new method for the preparation of cellulose acetate ultrafiltration membrane with good separation performance and anti-fouling performance and also provides a new way for water treatment.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-10
·
IF 15.7
Jiang Meng,Zhang Qinghua,Zhang Siyuan,Liu Ming,Fu Yuntian,Zhang Zhiyuan,Ai Xin,Mortazavi Bohayra,Wang Lianjun,Zhang Qihao,Makarov Denys,Jiang Wan
Thermoelectric materials offer an exceptional opportunity to convert waste heat into electricity directly, yet their widespread application remains hindered by intrinsic brittleness and poor processability. Here, we introduce a graded ball milling strategy that fundamentally enhances the mechanical robustness and processability of YbZn 2 Sb 2 -based thermoelectrics. By refining grain microstructure, increasing dislocation density, and promoting intermediate-angle grain boundaries, this approach enables the fabrication of crack-free, large-size, disc-shaped, and microscale dices while maintaining excellent thermoelectric performance. Extending this strategy to a broader class of brittle Zintl compounds, including AZn 2 Sb 2 , AMg 2 Sb 2 , and ACd 2 Sb 2 (A = Yb, Mg, Ca, Sr, Ba), we achieve a pre-formation cohesive energy of 9.1 eV atom − 1 and relatively low lattice thermal conductivity of 0.5 W m −1 K −1 in Yb 0.5 Mg 1.3 Zn 1.2 Sb 2 . Integrated with n-type Mg 3.1 Nb 0.1 Sb 1.5 Bi 0.49 Te 0.01 , the thermoelectric module achieves a conversion efficiency exceeding 10% under a 458 K temperature gradient, operating for more than 40 hours steadily. This work establishes a scalable and versatile strategy for reconciling mechanical durability with high thermoelectric performance, paving the way for next-generation thermoelectric devices with enhanced reliability and industrial viability.
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