PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Hui Liu,Long Yan,Feiyue Wang
A unique hybridized antioxidant named TiO 2 -KH550-PA, of which silane modified nano-TiO 2 particles were grafted with 3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid by acylation reaction, was applied to intumescent fire-retardant coatings for cable. Through fire protection test, contact angle test , thermogravimetric test and UV-ageing test, the effects of TiO 2 -KH550-PA on hydrophobicity , flame retardancy, smoke suppression, anti-ageing and charring performance for coatings were evaluated. The obtained results indicate that the TiO 2 -KH550-PA can enhance the hydrophobicity of the coating, thereby reducing the adhesion of dust on the coating surface . Additionally, TiO 2 -KH550-PA has a greatly promoting role in strengthening the fire protection abilities of the coating, but an appropriate amount is the key. Compared to coatings without composite, the intumescent fire-resistant coating for cable containing 1 wt% TiO 2 -KH550-PA (IFRCC 2 ) exhibits excellent fire protection performance, including a prolongation by 2.6 times in failure time, an increase by 1.7 times in char layer height, and an increase by 0.4 times in light transmittance for smoke density test. Furthermore, the presence of TiO 2 -KH550-PA can also strengthen the oxidation resistance , charring ability and char layer stability of the coating, when the remaining mass of IFRCC 2 increases to 49.0 % at 800 °C. The anti-ageing performance test demonstrates that the TiO 2 -KH550-PA can absorb ultraviolet light , eliminate free radicals, and raise the structural stability of the coating, thus reinforcing the durability of the fire resistance for the coating.
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Ye-Ting Wang,Yu Chai,Xiao-Ping Zheng,Ya-Peng Du,Yu-Cang Zhang,Yan-Zhen Zheng
In this study, novel biocompatible choline-organic carboxylic acid ionic liquids (Ch-OAC-ILs) were developed for pretreatment of tea stems. Among them, the combination of Ch + and levulinate achieved highest cellulose retention and most efficient lignin removal. The pretreatment mechanism were systematically explored using advanced characterization techniques and density functional theory calculations. The Ch-OAC-ILs preferentially targeted β-O-4 and β-5 linkages, yielding regenerated lignin enriched with H units. Both the cation and anion played critical roles in lignin dissolution. Furthermore, the enzyme digestibility of the pretreatment residue was significantly enhanced. The IL-lignin solution obtained after pretreatment was directly incorporated into chitosan films, where the ILs acted as plasticizers and lignin functioned as an active additive. These composite films exhibited superior UV-blocking properties with potential in functional packaging applications. This study highlights the efficacy of Ch-OAC-ILs as a sustainable and efficient method for lignin dissociation, offering a promising strategy for biomass fractionation and valorization.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Yinchuan Pu,Duoduo Huang,Wei Xu
Recently, it is urgent for PET films to demonstrate both superhydrophilicity and superoleophilicity to meet evolving industrial demands in applications such as precision printing and biomedical interfaces. This work developed a superamphiphilic PET surface through synergistic integration of oleophilic/hydrophilic units and micro/nano-structures, utilizing a highly efficient UV-curable technology. Epoxy resin (EP) and hydroxyethyl acrylate (HEA) were utilised as the crosslinking matrix, with carboxylated carbon nanotubes (CNTs) as functional fillers for micro/nano-structures formation. The modified PET films exhibited complete wetting behavior, showing 0° contact angles for both water and diiodomethane, along with a 66.8 % increase in surface energy (81.4 mN/m) compared to unmodified films. The E1H2C3 coating maintained 3B-grade adhesion without compromising tensile strength. Futhermore, the highly conductive CNTs significantly enhanced the film's antistatic properties, ultimately reducing resistivity by 11 orders of magnitude versus pristine samples.
✓ 已验证
产品关联
DOI
高影响因子
ACS ES&T Water
·
2025
·
IF 4.3
Qiqi Wan,Yiwei Han,Ruihua Cao,Shaolan Du,Jingyi Wang,Tinglin Huang,Gang Wen
The electrochemically driven UV light-emitting diode/chlorine (UV-LED/EC-Cl2) process represents an emerging advanced oxidation technology capable of simultaneously removing microorganisms and micropollutants, making it particularly suited for decentralized water treatment in rural areas (utilized naturally occurring Cl– in water). This research systematically investigated the removal efficiency and underlying mechanisms of the UV-LED/EC-Cl2 process for the selected microorganisms (Aspergillus niger spores) and herbicides (atrazine (ATZ) and 2,4-dichlorophenoxyacetic acid (2,4-D)). The results demonstrated a significant synergistic effect in fungal spore inactivation, primarily attributed to the generation of reactive radical species, which induced severe membrane disruption and elevated intracellular reactive oxygen species levels. Furthermore, the UV-LED/EC-Cl2 process exhibited exceptional herbicide removal efficiency, achieving over 90% degradation within 37 min. The coexistence of A. niger spores reduced the herbicide degradation efficiency by approximately 10%, with the degradation products of ATZ exhibiting increased molecular weight and toxicity. Even in actual groundwater, the UV-LED/EC-Cl2 process maintained a high removal efficiency. Additionally, the electrical energy per log removal of herbicide ranged from 18.3 to 32.5 kWh/m3-log, lower than that of the standalone processes. These findings underscore the potential of the UV-LED/EC-Cl2 process as an effective and energy-efficient solution for simultaneous microorganisms and micropollutant removal in decentralized water treatment.
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2025
·Vol. 15
·期 1
·1-14
·
IF 3.9
Zhou Lei,Zhang Mengting,Sun Huinan,Duan Liyuan,Meng Qingwei
This study establishes the first reversed-phase HPLC-UV method for simultaneous baseline separation of 12 structurally diverse water-soluble vitamins (WSVs) within 25 min. The eco-friendly approach utilizes a methanol–potassium dihydrogen phosphate (pH 4.85) gradient on a ChromCore C18 column (250 × 4.6 mm, 5 μm) with dual-wavelength detection (210/266 nm), eliminating environmentally detrimental ion-pairing reagents. Rigorous validation per ICH Q2(R1) guidelines confirmed excellent linearity (R² > 0.999), precision (RSD < 2.1%), accuracy (spike recoveries: 93.9–106.8%), and sensitivity (LODs: 0.01–0.78 µg/mL). The method resolved key analytical challenges including polarity disparities, matrix interference, and vitamin instability. Successful quantification of endogenous vitamins in DMEM medium showed ≤ 5.1% deviation from certified values for 11/12 analytes. Applied to five commercial MDCK cell culture media, the method revealed significant inter-product variability in vitamin composition – notably universal under-supplementation of riboflavin (0.576–0.741 µg/mL, 10× lower than other vitamins) and inconsistent biotin/adenine supplementation. This robust, cost-effective platform provides biomanufacturers with a powerful quality control tool for optimizing vitamin supplementation in vaccine production systems, addressing a critical gap in cell culture analytics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Sihang Pan,Yuhang Yan,Ruixin Chen,Zihan Zhao,Xianruo Du,Xuchu Shen,Ruimin Shen,Zungui Shao,Gaofeng Zheng
Green electrospinning of fully bio-based nanofibrous membranes holds significant promise for sustainable development. However, the complex molecular structures and functional groups inherent in bio-based materials often lead to strong intermolecular interactions. It may cause nozzle clogging and hinder the stretching and thinning of electrospinning jets, thereby adversely affecting performance optimization and scalable manufacturing of fibers. This study proposes an innovative "small-molecule barrier" strategy by introducing small molecules with controlled hydrogen bonds to shield strong polymer interactions. It reduced the jetting resistance of the microjet, significantly improving the electrospinning efficiency and the fiber formation quality. Resveratrol (RV) and naringin (NRG) were selected as the most suitable small molecules, which increased the jetting continuity of zein solution by 5.75 times and also achieved multifunctional integration. Furthermore, a sheath gas-assisted 8-nozzle electrospinning device was used to significantly increase production efficiency by 11.2 times. Most importantly, high-efficiency electrospinning of bio-based materials using water and ethanol as green solvents has become possible. The zein/RV/NRG membrane showed better filtration performance than the N95 mask core layer, with antibacterial rates against Escherichia coli and Staphylococcus aureus over 97 %, and a ultraviolet protection factor of 107.51. This study advances the green manufacturing of high-performance multifunctional composite nanofibers.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Zhenhua Shi,Mengmeng Wei,Tong Gao,Dandan Fu,Masrina Mohd Nadzir,Junsheng Wang,Leihua Jia,Wenjiao Yuan,Bo Wang,Jinjun Yang
The poly(L-lactic acid) (PLA) is a biodegradable, biocompatible, and mechanically robust biological macromolecule that has been widely applied in various fields. However, the PLA is highly flammable and prone to dripping during combustion, posing potential fire safety risk. Moreover, it exhibits an extremely poor crystallizability. In this work, a halogen-free flame retardant (C-DPPC) was synthesized from a bio-based carboxymethyl cellulose (CMC), and a novel flame-retardant PLA composite (PLA/C-DPPC) was developed. The PLA/5 %C-DPPC achieved a limiting oxygen index (LOI) of 38.2 % and increased by 91.0 %, reaching the highest UL-94 vertical burning rating of V-0 with a self-extinguishing property. The peak heat release rate (pHRR), total heat release (THR), and carbon dioxide production (CO 2 P) decreased by 41.7 %, 53.7 %, and 53.6 %, respectively, demonstrating excellent flame retardancy and fire safety performance. The excellent fire-proofing effect is attributed to the condensed-phase (continuous, compact and dense char layer) and gaseous-phase (quenching effect of phosphorus–oxygen radicals on oxygen radicals) flame retardant mechanisms. In addition, the composite exhibited improved crystallization rate, significantly enhanced UV-shielding capability and hydrophilicity. This work provides a new strategy for the development of green multifunctional materials and offers a promising example for expanding the potential applications of the PLA-based composites.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Pengwei Yan,Chao Feng,Minghua Li,Jimin Shen,Zhonglin Chen,Fang Ma,Jing Kang,Xinwei Zhu,Yabin Li,Yizhen Cheng
The UV-triggered ozone micro-nanobubble (UV/O 3 -MNBs) system is specifically designed for long-lasting decontamination and control of disinfection byproducts (DBPs), demonstrating its effectiveness and promising potential. UV-triggered O 3 -MNBs efficiently induce O 3 decomposition to form hydroxyl radicals (·OH), thereby greatly boosting their contribution rates to over 98.0 % during water decontamination. By leveraging the powerful ·OH oxidation, the UV/O 3 -MNBs system exhibits superior performance in removing trace organic compounds from actual water bodies, and improving total organic carbon (TOC) removal efficiency. The constructed system showed high performance during long-term running with continuous entrance of pollutants. Notably, it reduces the generation potential of bromate (BrO 3 − ) by interfering with HOBr/OBr − through ·OH reactions. Meanwhile, it significantly reduces Cl/Br-THMs formation potential compared with direct chlorination disinfection (24 h), from 18.9 μg/L to 11.6 μg/L. Simultaneously addressing refractory micro-pollutant abatement and DBPs control, the UV/O 3 -MNBs effectively reduce energy consumption compared to the O 3 -MNBs oxidation alone. This study innovatively coupled the UV and O 3 -MNBs for micropollutants removal and DBPs control, which provides a novel insight into durable water purification and serves as a valuable reference for practical applications.
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Bingliang Zhang,Qiyi Wang,Ling Zhou,Xinqi Li,Fuyao Tong,Xiaomeng Wang,Yueke Wang,Chang Xu,Xifeng Shi,Bo Tang
Disinfection byproducts (DBPs) inevitably form during municipal wastewater disinfection, posing potential threats to human and ecological health. While UV-based advanced oxidation/reduction processes (UV-AOPs/ARPs) show promise in eliminating DBP precursors, their efficacy and mechanisms for controlling both known and unknown DBPs remain unclear. This study systemically investigated dissolved organic matter (DOM) transformation and DBP mitigation during pre-treatments of actual municipal wastewater using UV, UV/Peroxydisulfate (UV/PS), UV/H 2 O 2 , and UV/Sulfite. Combining spectroscopy, chromatography, and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR-MS) analyses, the results demonstrated that UV/PS and UV/H 2 O 2 were more effective than UV/Sulfite at degrading aromatic and fluorescent compounds. All pre-treatments significantly reduced total organic chlorine and known DBPs versus direct chlorination, with UV/Sulfite achieving the highest reduction (80.42% and 60.98%). Unknown DBP molecules decreased by 31.54–53.04% (UV < UV/Sulfite < UV/PS < UV/H 2 O 2 ). Specifically, UV/PS and UV/H 2 O 2 preferentially controlled CHOSCl and CHONCl compounds, and 1Cl-DBPs, whereas UV/Sulfite excelled at reducing multi-chlorinated DBPs. Additionally, all pre-treatments reduced the calculated cytotoxicity of known DBPs by 49.89–81.25%, most notably for UV/Sulfite. These findings demonstrate the effectiveness of UV-AOPs/ARPs for comprehensive DBP control and provide practical guidance for selecting an optimal pre-treatment strategy based on target DBP profiles in wastewater applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Abdul Haleem,Xianshuang Zhu,Dost Muhammad Khan,Buriro Ghous Bakhsh,Kaixuan Huang,Hao Li,Hua Zhong
Bio-based porous materials have attracted significant attention over recent decades as environmentally sustainable alternatives to synthetic counterparts. This study synthesized a three-dimensional porous biocatalyst through UV-assisted cryopolymerization to graft acrylamide onto chitosan chains, followed by in situ integration of silver nanoparticles via a self-reduction mechanism. The composite exhibited enhanced antibacterial efficacy against Escherichia coli ( E. coli ), attributable to the synergistic effects of chitosan and silver nanoparticles. A rapid swelling ratio (20 s) corroborated the macroporous architecture of the material. The biocatalyst demonstrated exceptional catalytic performance in the hydrogenation reduction of Congo red azo dye under both deionized and tap water conditions when paired with a reducing agent. Notably, formulations with lower chitosan content achieved superior reduction kinetics, yielding apparent rate constants of 0.160 min −1 and 0.117 min −1 in deionized water and tap water, respectively. Key structural advantages such as tunable porosity, hydrophilicity, biodegradability, and an economical fabrication protocol collectively contributed to its enhanced catalytic efficiency. Critical operational parameters such as biocatalyst dosage and temperature were systematically evaluated to assess scalability potential. Thermodynamic analysis via the Arrhenius equation revealed an activation energy (Eₐ) of 35.45 kJ.mol −1 for Congo red hydrogenation. Complementary Eyring equation calculations provided enthalpy (ΔH = −33.67 kJ.mol −1 ) and entropy (ΔS = −159.15 J.mol −1 .K −1 ), consistent with an associative reaction mechanism. The biocatalyst maintained robust reusability over four consecutive cycles with negligible change in hydrogenation reduction performance. Collectively, this work establishes a green, high-performance biocatalytic platform with superior environmental compatibility compared to conventional synthetic catalysts, underscoring its potential for sustainable wastewater treatment applications.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
·
2025
·
IF 8
Yan Li,Yongcai Tian,Yuyao Zhong,Xiangrui Zeng,Wenqian Zhao,Longxiang Zhang,Haoyuan Song,Yuwei Liang,Ming Yan,Shiji Jiang,Jun Xie
This study reports the green synthesis of ammonium polyphosphate-grafted lignin (APP@Lig) without organic solvents. The synthesis employed ammonium dihydrogen phosphate, urea, and phosphoric acid through nucleophilic substitution and polycondensation. Piperazine pyrophosphate (PAPP) and APP@Lig were mixed at a 3:1 mass ratio and added to a high-density polyethylene (HDPE)/polyolefin elastomer (POE) composite system (PEPO) as flame retardants. With 30 wt% total flame retardant content, the composite achieved a UL-94 V-0 rating and a limiting oxygen index (LOI) of 28.9 %. Cone calorimetry confirmed that the addition of APP@Lig reduced heat release significantly. Compared with pure PEPO, the composite showed 36.3 % lower total heat release (THR) and 82.9 % lower peak heat release rate (pHRR). The peak CO₂ release rate also decreased by 0.4 g·s⁻¹ . In addition, the fire performance index (FPI) increased by 76.5 % compared with the system containing only 30 % PAPP, indicating improved fire safety. The composite showed excellent UV resistance (UPF 44.31) due to lignin’s aromatic structures and phenolic hydroxyl groups. Overall, this work introduces a practical strategy for combining inorganic and bio-based flame retardants to enhance both flame retardancy and weather resistance in HDPE-based composites.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2025
·
IF 9.8
Xin Qu,Ce Wang,Yuanyu Zhao,Jinqiu Ye,Ping Hu,Rui Zhao,Yong Liu
Human activities, ranging from medical applications to space exploration, face significant threats from multiband electromagnetic radiation. This challenge is particularly pronounced in the complex radiation environments of space. There is an urgent need for high-efficiency, stable broadband electromagnetic shielding materials to safeguard human health and equipment safety. Herein, a Bi-modified W 18 O 49 /MWCNTs/PAN hybrid nanofiber membrane is successfully prepared by electrospinning and post-treatment. Relying on the synergistic effect of Bi, W 18 O 49 , MWCNTs, and porous structures, excellent broadband radiation protection capability is achieved: (i) Low near-infrared-visible-light (NIR-VIS) transmittance (0.62 %); (ii) Ultraviolet (UV) transmittance of only 0.012 % and UPF value as high as 2000; (iii) Mass attenuation coefficient up to 16.18 cm 2 g −1 and attenuation ratio of 85.74 % (thickness: 4 mm) at 33 keV X-ray energy. Furthermore, porous structure and high specific surface area give the membrane ultralight density (0.36 g cm −3 ), flexibility, and outstanding air permeability (8.5 kg m −2 d −1 ). Even after 2000 bends, it still maintains stable structure and performance. Meanwhile, low thermal conductivity (42.2 mW m −1 K −1 ) and superior temperature resistance (300 °C) enable it to adapt to complex and changing environments. These advantages make the membrane highly promising for radiation protection in medical, industrial, and aerospace applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）