CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Lifan Li,Deming Zhou,Jiapeng Ye,Kun Luan,Zaixing Zhang,Lingxiao Jing,Tonghua Zhang
Long-lasting antibacterial properties in cotton fabric address microbial growth, odor formation, and hygiene issues, which are common drawbacks at the usage of natural fibers. Recent cotton market demands durable, eco-friendly solutions that enhance fabric longevity and performance in various applications. This study presents the development of a durable and multifunctional antibacterial cotton fabric achieved through a feasible and cost-effective “one-bath” impregnation process. A N -halamine precursor, featuring a terminal chlorine group (TD@Cl), was chemically bonded to the hydroxyl groups of cotton fabric, imparting enhanced antibacterial properties along with flame-retardancy, hydrophobicity, and self-cleaning capabilities. The TD@Cl treated fabric, designated as COTD, demonstrated exceptional antibacterial efficacy, exhibiting over 99.99% efficacy against both S. aureus and E. coli , with rapid bactericidal action within 3 min of contact. Notably, the COTD-Cl fabric maintained its antibacterial performance even after 40 washing cycles. Flame-retardancy tests revealed a 43.4% reduction in total heat release (THR) compared to untreated cotton. The fabric exhibited superior hydrophobicity and self-cleaning properties. Its air permeability and water vapour permeability are also discussed. These results highlight the potential of this efficient method to produce durable, multifunctional cotton fabrics suitable for a wide range of practical usages, such like garments, decoration and furniture etc.
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Coatings
·
2025
·Vol. 15
·期 6
·630
·
IF 2.8
Zhaobin Lu,Baoxin Wang,Shengtao Li,Feiyan Pan,Xuewei Zhu,Xiaofeng Wei
In the “dual carbon” objective, the preparation of non-precious metal catalysts with low cost and high activity is essential for the study of hydrogen evolution reactions (HERs). This study employed biomass pomelo peel powder as the carbon source and ammonium metatungstate (AMT) as the tungsten source and, through a facile one-step method in molten salt, fabricated a biomass carbon-based nanocatalyst featuring carbon flakes adorned with tungsten carbide (WC) nanoparticles. Dicyandiamide and cysteine were introduced as nitrogen and sulfur sources, respectively, to explore the impacts of N-S elemental doping on the structure, composition, and HER performance of the WC/C catalyst. The experimental results showed that N-S doping changed the electronic structure of WC and increased the electrochemically active surface area, resulting in a significant increase in the HER activity of WC/C@N-S catalysts. The WC/C@N-S catalyst was evaluated with hydrogen evolution performance in a 0.5 mol/L H2SO4solution. When the cathodic current density reached 10 mA/cm2, the overpotential was 158 mV, and the Tafel slope was 68 mV/dec, underscoring its excellent HER performance. The outcomes offer novel insights into the high-value utilization of agricultural biomass resources, and pave the way for the development of cost-effective, innovative hydrogen evolution catalysts.
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Small
·
2025
·
IF 12.1
Hao Xu,Yuye Dou,Xinrui Wang,Guangling He,Xia Li,Xuefeng Yan,Liangmin Yu
Herein, a simple, innovative, and efficient method is presented for synthesizing an electromagnetic wave (EMW)-absorbing material with a distinctive flower–ball structure. Acrylonitrile (AN)–styrene binary polymer microspheres (PAS) serve as seeds for the deposition of AN, forming petal-like structures and yielding uniform polymer flower balls (PAS&A-F). Carbonization of these flower balls produces PAS&A carbon flowers (PAS&A-CF) with excellent EMW absorption properties. PAS&A-CF carbonized at 800 °C exhibits a minimum reflection loss of −54.0 dB at a thickness of 2.92 mm and an optimal effective absorption bandwidth of 4.01 GHz. This exceptional performance is attributed to the unique petal-like cross-stacked flower–ball morphology, porous structure, N and O atom doping, and an appropriate degree of graphitization. These characteristics synergistically enhance impedance matching, multiple scattering and reflection, dipole polarization, and conductive loss. This straightforward, innovative, and highly efficient preparation approach, with precise control over surface morphology and temperature, offers a novel approach for developing high-performance EMW-absorbing materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Jiachang Liu,Yanqiang Zhou,Ruxangul Jama,Tursun Abduiryim,Abdukeyum Abdurexit,Hongtao Yang,Kai Song,Jiabei Li,Jinglei Chen,Wenjing Zhang
Layered double hydroxides (LDHs) have an abundance of redox reaction sites, giving them a high specific capacitance. However, the improvement of intrinsic electrical conductivity remains a great challenge due to the tendency of LDHs to agglomerate, under-exposure of active sites, and under-developed internal pore structure. In this work, cobalt–nickel hydroxide modified N-doped hollow mesoporous carbon spheres (CoNi-LDH/N-HMCS) were designed and prepared as electrode materials. The results showed that N-HMCS was uniformly wrapped by CoNi-LDH nanosheets, which suppressed the volume change and structural collapse of CoNi-LDH during charging and discharging, increased the dispersion of the active material, and exposed more active sites. At the same time, the unique high specific surface area and hollow mesoporous structure of N-HMCS opens up an effective way for electrolyte ion transport, shortens the ion diffusion path, and reduces the diffusion resistance, thus improving the charge/discharge efficiency of the material. In addition, the presence of two different metal ions in CoNi-LDH provides more redox reaction sites and improves electrical charge storage capacity. Satisfactory, the CoNi-LDH/N-HMCS electrode material exhibits an ultra- high mass ratio capacitance with 2244.4 F g −1 (1 A g −1 ). A hybrid supercapacitor together with CoNi-LDH/N-HMCS as the cathode material achieved a superior gravimetric energy density of 91.98 W kg −1 at a gravimetric power density of 750 W kg −1 and good cycling performance with 99.27 % cycle retention and 95.24 % coulombic efficiency for 10,000 cycles at 3a g −1 . In short, CoNi-LDH/N-HMCS composites have excellent energy storage performance and are hope for the development of new hydroxide composite electrodes for advanced energy devices.
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Sha Li,Yangchun Qu,Xifei Yu,Wei Xue,Zonghua Liu
In recent years, cancer immunotherapy as a new generation of cancer treatment strategy has displayed promising potential and attracted more and more attention. However, tumor-associated antigens if used alone could not induce potent immune responses. Therefore, efficient tumor treatment demands the assistance of vaccine delivery systems to elicit strong anti-tumor immune responses. In this study, a novel cell membrane adhesive vaccine carrier— n -hexadecyl choline phosphate (C16-CP) was synthesized and evaluated for the delivery of model antigen ovalbumin (OVA) and for anticancer therapy. Choline phosphate (CP) group is orientated opposite to and hence has electrostatic attraction with the phosphatidylcholine group of cell membrane component dipalmitoyl phosphatidylcholine. Moreover, CP group was hydrophobically modified with n -hexadecyl chain to prepare a cell membrane adhesive molecule C16-CP, which could adhere to cell membrane through electrostatic attraction and hydrophobic interaction. The CP group is positively charged at neutral pH environment. Hence, the cationic lipid C16-CP could interact with OVA through electrostatic attraction and hydrophobic interaction. In this work, the potential of C16-CP to assist antigen delivery was evaluated in order to develop a novel vaccine delivery system.
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JOURNAL OF MOLECULAR STRUCTURE
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2025
·
IF 4.7
Zihao Qiu,Gerile Naren,Rui Meng,Rui Liang,Ziyang Chen
Four Pr-phen-acyl amino acid ternary complexes (Pr [CH 3 (CH 2 ) n CONHCH(CH 3 )COO] 3 ·phenanthroline, n = 4,6,8,10) were synthesized by a method used for optical materials that is based on solution chemical reactions. The molecular structure of the praseodymium complexes was determined using CHN elemental analysis, 13 C-Nuclear Magnetic Resonance ( 13 C NMR) spectroscopy, and Fourier Transform-Infrared (FT-IR) spectroscopy. X-ray diffraction and polarized light microscopy showed that Pr(hex‑ala) 3 ·phen, Pr(oct‑ala) 3 ·phen, and Pr(dec‑ala) 3 ·phen have good crystallinity and exhibit excellent optical anisotropy in the molten state. Ultraviolet-Visible (UV–Vis) spectroscopy revealed that the light absorption of the praseodymium complexes is in the range of 200 nm - 500 nm after the introduction of phenanthroline (phen). Fluorescence spectral analyses in the visible region, at an excitation wavelength of 417 nm, indicated that Pr(hex‑ala) 3 ·phen emits green light. In contrast, the other three praseodymium complexes with long carbon chains emit red light. Furthermore, phen significantly enhances the fluorescence intensity of the complexes and remarkably prolongs their fluorescence lifetimes. Variable-temperature fluorescence spectroscopy revealed that the praseodymium complexes maintained a high luminescence intensity throughout the heating process, ranging from 25 °C to 200 °C, which is attributed to their conjugated functionalities.
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高影响因子
International Journal of Applied Ceramic Technology
·
2025
·Vol. 23
·期 1
·e70126
·
IF 2.3
Shuhui Chen,Qinxing Xie
Ca 1- x Y x MnO 3 and Ca 1- x Y x Mn 1- y Nb y O 3 (0 ≤ x , y ≤ 0.07) thermoelectric ceramics were fabricated via microwave-assisted calcination followed by conventional sintering. The effects of substituting Ca with Y and Mn with Nb on the microstructure and power factor ( PF ) were systematically investigated. The results indicate that the crystal structure of CaMnO 3 remains unchanged upon doping. Electrical conductivity increases, while the absolute value of the Seebeck coefficient decreases with increasing dopant concentration in both series of compounds. Consequently, the PF for Ca 1- x Y x MnO 3 increases continuously within the range of doping amount (0 ≤ x ≤ 0.07), whereas that of Ca 1- x Y x Mn 1- y Nb y O 3 initially increases with x = y ≤ 0.02, and then decreases for 0.02 < x = y ≤ 0.06. In addition, the PF increases for all samples as the temperature increases. The maximum PF achieved are 127 µW m −1 K −2 for Ca 1- x Y x MnO 3 ( x = 0.07), and 154 µW m −1 K −2 for Ca 1- x Y x Mn 1- y Nb y O 3 ( x = y = 0.02). These results demonstrate that the co-doping of CaMnO 3 with Y/Nb is more effective in improving the electronic transport characteristics than single Y-doping.
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INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2025
·Vol. 27
·期 1
·434
·
IF 4.9
Mingyuan Zhang,Jinru Wang,Caihan Zhu,Yuning Zhang,Dewei Li,Shuozhen Hu
Developing efficient and durable oxygen reduction reaction (ORR) catalysts is crucial for advancing fuel cell technology and sustainable energy conversion. In this study, a scalable strategy was employed to synthesize ZIF-derived nitrogen-sulfur co-doped carbon nanosheets embedded with in situ generated ZnS and Co9S8nanoparticles. The synergistic effect of heteroatom doping and metal sulfide modification effectively modulated the electronic structure, optimized charge transfer pathways, and enhanced structural stability. The optimized catalyst exhibited a half-wave potential of 0.83 V vs. RHE, close to that of commercial 20 wt% Pt/C (0.85 V), excellent 4e−ORR selectivity, and exceptional stability, with only a ~15 mV degradation after 10,000 cycles. These results demonstrate that the combination of nitrogen sulfur co-doping and in situ metal sulfide addition pro-vides an effective approach for designing highly active and durable non-precious metal catalysts for the ORR. This synthetic concept provides practical guidance for the scalable preparation of multifunctional nanomaterial-based catalysts for electrochemical energy applications.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Sainan Hu,Zhixiang Fu,Yongchao Chen,Chuyu Zhou,Zhengdong Fei
A novel polyvinylidene fluoride/bis(trimethoxysilylpropyl)amine (PVDF/BTMSPA) asymmetric composite membrane was fabricated through a one-step vapor-induced phase separation (VIPS) process. The hydrophilic BTMSPA monomers preferentially migrated to the membrane surface during VIPS, where they underwent hydrolysis and condensation to form a dense skin layer, while the hydrophobic PVDF matrix solidified into a porous support layer. By varying the VIPS duration, the skin layer structure could be tuned from porous to dense. At a VIPS time of 0.5 h, a spontaneously formed dense-skinned PVDF/BTMSPA composite membrane was achieved. The membrane demonstrated preferential adsorption of n-butanol over water, exhibiting optimal separation performance for a 4 wt% n-butanol/water mixture at 70 °C, with a flux of 1980 g/m 2 ·h and a separation factor of 63.65. This work not only provides a facile and efficient VIPS-based strategy for fabricating asymmetric composite membranes but also highlights the potential of PVDF/BTMSPA membranes for n-butanol/water separation applications.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Mingming Du,Anxian Peng,Hongyue Liu,Huimei Chen,Qiyun Li,Zheng Fang,Ganning Zeng,Rongjun Yan
The well-designed internal electric field (IEF) with band bending effects will effectively accelerate the separation and transfer of photogenerated charges to foster a photocatalytic performance. Hence, in this work, the IEF-induced BiOCl/TiO2 p-n heterojunctions are prepared through the hydrothermal method for photocatalytic H2O2 production. The BiOCl/2TiO2 composite performed a superior H2O2 yield of 4.75 mM h–1, which is 4 times higher than that of pristine BiOCl. The p-n heterojunction mechanism was investigated via XPS and photoelectrochemical property tests, in which BiOCl/2TiO2 showed the highest photogenerated charge separation efficiency for boosting photocatalytic activity. This work provided an effective strategy for the design of p-n heterojunction photocatalysts to enhance photocatalytic performance.
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Journal of Materials Chemistry A
·
2025
·Vol. 13
·期 48
·41788-41797
·
IF 9.5
Wenjie Li,Zeqing Hu,Ziwang Zhang,Zehao Lin,Min Ruan,Jiahao Jiang,Jing Shuai
Enhancing the thermoelectric performance of n-type polycrystalline SnSe remains challenging due to the trade-off between carrier transport and lattice thermal conductivity. Here, we demonstrate that trace incorporation of the lead-free perovskite Cs2TiCl6 enables concurrent optimization of these factors in SnSe0.93. The [TiCl6]2− octahedral framework introduces effective electron donors, while Ti 3d states induce local band flattening, increasing the density-of-states effective mass without severely degrading weighted mobility. Consequently, the 0.5 wt% Cs2TiCl6 sample attains a high power factor of ∼532.1 µW m−1 K−2 at 823 K. Meanwhile, Ti-rich domains together with multi-scale structural defects (strain fields, dislocations, and twin boundaries) substantially intensify phonon scattering, driving the lattice thermal conductivity down to ∼0.32 W m−1 K−1 at 823 K—a 40.6% reduction relative to the pristine specimen. Benefiting from this synergistic carrier and phonon engineering, a peak ZT of ∼1.2 at 823 K is achieved for 0.5 wt% Cs2TiCl6, representing a 179.1% enhancement over undoped SnSe0.93 and outperforming most reported n-type polycrystalline SnSe-based materials. This work establishes trace lead-free perovskite doping as a dual-function strategy—simultaneously enabling band structure modulation and phonon mean free path suppression—offering a viable route toward environmentally benign, high-efficiency n-type SnSe thermoelectrics.
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Sustainable Energy & Fuels
·
2025
·
IF 4.1
Kexiang Li,Fancang Meng,Jiahao Li,Huan Wu,Hongbing Jia,Qingmin Ji
Polypyrrole (PPy) serves as an excellent N-rich precursor for Fe-N-C electrocatalysts, as its pyrrolic-N moieties not only facilitate metal coordination but also generate intrinsic carbon defects, promoting the formation of atomically dispersed active sites. However, excessive interchain cross-linking during polymerization often leads to dense, poorly porous carbon structures upon pyrolysis, severely limiting the accessibility of these active sites and overall catalytic performance. Herein, we report a “dynamic coordination motif” strategy by introducing 4-vinylpyridine (vP) as a co-monomer during the Fe-coordinated pyrrole polymerization. vP may compete with pyrrole for Fe coordination, forming dynamic Fe-vP complexes that act as molecular spacers within the growing polymer network. This process effectively inhibited dense chain packing, creates additional coordination anchors for Fe, and guides the formation of a more open architecture. After pyrolysis, this hybrid polymer transforms into a stable porous carbon matrix with rich pyridinic-N and a high density of accessible Fe-N sites. The resultant vP-Fe@PPy catalysts exhibited significantly superior ORR catalytic performance, outperforming both the vP-free, Fe-doped PPy-derived carbon and the commercial Pt/C catalyst. This work presents a facile and effective strategy for engineering highly accessible active sites in metal-doped carbon electrocatalysts, enabling tailorable metal loadings with uniform distribution.
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