SCIENCE OF THE TOTAL ENVIRONMENT
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2024
·
IF 8.2
Qian Zhang,Xinyan Xu,Chenzhuo Song,Dengke Zhang,Yi Kong,Xinyi Cui
Tire wear particles (TWP), as an emerging type of microplastics, are a significant source of contaminants in roadside soils due to their high concentration of pollutants, including polycyclic aromatic hydrocarbons (PAHs). This study explored the impact of ultraviolet (UV) exposure and natural aging on the in vitro bioaccessibility of PAHs associated with TWP in soil on a China-wide scale. Our findings suggested that UV exposure amplified the negative charge of TWP by 75 % and increased the hydrophobic groups on the particle surface. The bioaccessibility of 3- and 4-ring PAHs in TWP was significantly ( p < 0.05) heightened by UV exposure. After 20 types of soils containing 2 % UV-exposed TWP underwent natural aging, the bioaccessibility of PAHs saw a significant decrease ( p < 0.05) to 16–48 %, compared to 28–96 % in the unaged group. Soil pH and electrical conductivity (EC) were the two primary soil properties positively influencing the reduction of in vitro PAHs concentration and PAHs bioaccessibility. According to the prediction results, soils in southern China presented the highest potential region for the release of bioaccessible PAHs from TWP, highlighting the regional specificity of environmental impact. Our study provides valuable insights into the biological impact of PAHs associated with TWP on a regional scale, and offers scientific evidence for targeted soil risk management strategies.
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PubMed
高影响因子
DYES AND PIGMENTS
·
2025
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IF 4.2
Bin Xu,Jiajie Cai,Maohua Hou,Meiting Zhu,Xuanhao Sheng,Haolin Wang,Li Pan,Xiaohui Lu
Since traditional anti-counterfeiting technology with a single decryption mode is easy to be cracked and imitated, the development of new anti-counterfeiting technology with complex response modes has significance. Here, we propose a preparation method for solvent/ultraviolet (UV) dual-responsive anti-counterfeiting coating based on fluorescent structural color pigments. The fluorescent non-iridescent structural color pigments based on CB@SiO 2 /CQDs core-shell nanospheres were prepared by carbon black (CB) as the core, and SiO 2 loaded with carbon quantum dots (CQDs) as the shell. The structural design of CB as the core can enhance the structural color saturation and enhance the chromatic stability. In addition, the CQDs embedded in SiO2 shells impart fluorescence function to structural color pigments, while effectively avoiding fluorescence quenching caused by agglomeration. Eventually, the solvent/UV dual-responsive photonic crystal anti-counterfeiting coatings were prepared by alternating spraying and superhydrophobic modification, consisting of structurally colored CB@SiO2, CB@SiO2/CQDs nanospheres and SiO 2 nanospheres. The top SiO 2 layer became transparent when the coatings were exposed to water. The underlying CB@SiO 2 and CB@SiO 2 /CQDs composite coatings were impervious to water infiltration, owing to the superhydrophobic properties. The structural color and fluorescent pattern information can be observed under natural light and UV illumination, respectively, after the SiO 2 layer became transparent. The solvent/UV dual-responsive anti-counterfeiting technology independent of large refractive index contrast was achieved by the above method, and this dual-responsive anti-counterfeiting strategy of fluorescence and structural color combination has a broad prospect in the field of anti-counterfeiting and information encryption.
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高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2024
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IF 8.3
Shiwei Feng,Jingjing Cui,Yunlong Guo,Weizi Gao,Yongding Sun,Chen Liang,Zhe Lu,Biao Zhang
Integration of functional nanomaterials into 3D printing polymers expands the versatility of 4D printing. However, high performance and multi-UV curable materials adaptable nanoparticles for 4D printing are still urgently needed to avoid printing complications and deformation limitations caused by high filler loadings. Here, high performance oxygen-deficient tungsten oxide nanoparticles (WO 3-x NPs) are synthesized via a straightforward hydrothermal method, and the resulting nanoparticles (NPs) exhibit excellent photothermal property which can rapidly increase from room temperature to 562.6 °C in less than 2 s via near-infrared (NIR) light irradiation. Moreover, these NPs can also be well dispersed in a wide range of photocurable polymers, such as UV curable hydrogel, shape memory polymer, and dual-curing polymer, forming variety of nanocomposite systems. The formed nanocomposite systems can be manufactured into complex 3D structures via digital light processing based 4D printing. Just trace WO 3-x NPs in nanocomposite systems (<2 wt‰) can help realize the controllable photothermal properties of the printed structures, which are capable of arbitrary spatial deformation, remote-controlled distortion, and on-demand reinforcement in response to NIR irradiation, presenting a succinct and impactful approach to broadening the application scope of light-controlled DLP-based 4D printing.
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高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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2024
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IF 5.8
Jianan Shan,Gaoming Mo,Qing Sun,Jing Huang,Qin Ouyang,Qing Huang
SiC fiber is an important structural material in high-temperature extreme environments and nuclear energy applications. Oxidation and electron irradiation are main curing methods for the fabrication of industrial SiC fibers. In this work, a photo-sensitive polyvinylaluminocarbosilane (PVACS) is facilely prepared by blending polyaluminocarbosilane (PACS) and 1,3,5,7-tetramethyl-1,3,5,7-tetravinylcyclotetrasiloxane (D4Vi), which can be melt spun, cured by ultraviolet irradiation at room temperature. After thermal pyrolysis and sintering, the SiC(OAl) fibers with oxygen content of 8.84 wt% and C/Si ratio of 1.34, the SiC(Al) fibers with oxygen content of 0.29 wt% and C/Si ratio of 1.03 are achieved. The cured mechanism and the structural evolution from the precursor fiber to the final ceramic fibers is investigated. The results show that homopolymerization of D4Vi is the main curing mechanism in addition to the β-addition of hydrosilylation. Different from the typical oxidative curing, the oxygen in the fibers mainly comes from D4Vi. At about 800 ℃, the SiAl x O y phase, the SiC x O y phase and free carbon are formed. At 1200 ℃, the Al-C bonds possibly in Al 4 C 3 are formed. At around 1600 ℃, Al may exist mainly in the form of Al 4 O 4 C, and the amorphous carbon phase changes into crystalline graphitic structure. Meanwhile, a lot of mesopores and macropores in the SiC(OAl) fibers are formed due to thermal decomposition of the SiC x O y phase. However, at 1800 ℃, the SiC(Al) fibers densify again due to the formation of Al 2 OC and Al 4 SiC 4 phases, which also inhibit the growth of β-SiC and favor the formation of α-SiC.
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高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 7
·4627-4644
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IF 4.9
Yuan Hua-Bin,Zhao Manman,Zhu Xiaowei,Sha Desheng,Chen Guoqiang,Xing Tieling
Numerous techniques for achieving superhydrophobic modification of cotton fabrics are documented in existing literature. However, pursuing multifunctionality, especially concerning textile performance, remains a topic of significant research interest. This study introduced a straightforward yet highly effective method for producing modified cotton fabric (SFC) exhibiting a vibrant orange-yellow coloration, along with exceptional self-cleaning, stain-resistant, UV-blocking, anti-icing, and photothermal de-icing properties, through the utilization of ferric chloride hexahydrate (FeCl 3 ·6H 2 O) and polydimethylsiloxane (PDMS). The surface of the SFC was evenly coated with small nanoparticles, identified by X-ray diffractometer (XRD) as β-FeOOH. The SFC displayed a water contact angle of 165.9° and a sliding angle of 2°, demonstrating outstanding superhydrophobicity. In addition, the SFC achieved a UPF value of 80, indicating exceptional UV-blocking capabilities. Additionally, the SFC exhibited remarkable stability when subjected to harsh conditions, including exposure to strong acid (pH = 1) and alkali (pH = 13), various chemical reagents, 600 min of water washing, and 30 cycles of abrasion testing. The approach proposed in this study offers the advantages of cost-effectiveness, environmental friendliness, and fluorine-free characteristics, and is applicable across a range of fabrics, and has certain practical utility. Graphical abstract
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ChemNanoMat
·
2024
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IF 2.6
Yuqi Guo,Jiali Xu,Hu Li,Minghui Sun,Linrui Hou,Changzhou Yuan
Carbonized polymer dots (CPDs) have received much attention in recent years owing to their cost-effective synthesis, high resistance to photobleaching, environmental friendliness, and excellent biocompatibility. However, the aggregation-induced fluorescence quenching is a great obstacle to its applications. In this work, the highly fluorescent CPDs are prepared by a facile hydrothermal method assisted by polyethylene glycol (PEG) as the surface passivation agent, where phthalic acid and ethylenediamine are used as carbon and nitrogen source, respectively. Meanwhile, five types of PEG species are applied to prepare five CPDs to investigate PEG on optical properties of the resultant CPDs, among which the best quantum yield reaches 57.0%. The promising applications of CPDs as fluorescent inks, sensors, light emitting diodes, and UV shielding films have been demonstrated. Overall, our contribution here develops a facile and accessible route for the synthesis of CPDs and further demonstrates its versatile applications.
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高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2024
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IF 7.4
Yu Tian,Wenyan Guo,Zhuo Huang,Yunyan Peng,Junfeng Hou,Xiaolong Fang,Youming Yu,Wenbo Che
Wood is an attractive bio-based building material whose properties are often affected by environmental moisture, ultraviolet, and fungi. Chemical modification is an effective way to improve wood properties ( e.g. , dimensional stability and decay resistance) and thus extends the service life of its products. However, traditional chemical modifiers often contain mild toxicity or volatiles, which harms the operator and environment. Herein, a carboxylated sucrose (CS) was prepared by a green synthesis route using natural compounds (sucrose and malic acid) and used to enhance the properties of wood. The CS penetrated the wood through vacuum-pressure impregnation, which can self-polymerize and be deposited in the cell lumen and chemically bonded to cell wall components , thus efficiently sequestered within the wood. The CS treated wood (CS-wood) exhibited excellent dimensional stability with 41 % of ASE due to its cross-linking with cell walls. Besides, the modulus of elasticity and compressive strength of CS-wood increased by 21 % and 20 % compared with untreated wood, respectively. Notably, CS can help extend the wood service life by limiting the adsorption and migration of moisture in wood cells to improve the UV and decay resistance of the wood. This whole-process friendly approach to preparing biomass-derived CS modifiers effectively improved wood properties, which may provide innovative concepts and insights for wood modification research.
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2025
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IF 7.3
Yonghao Zhu,Xia Zhao,Shuai Yuan,Xiaohong Ji,Weichao Song,Jizhou Duan,Baorong Hou
Covalent organic frameworks (COFs) show great promise for anti-corrosion due to their highly ordered structure, robust covalent network, and tunable porosity. In this paper, benzotriazole (BTA) was first loaded onto COFs, then used interface-induced polymerization to grow polydopamine (PDA) at COFs, and finally established an in situ anchored connection with the natural compound aloe emodin through adhesive bridging effect. The modified COFs were added as fillers to organic resins, obtaining organic coatings with anti-UV aging, enhanced adhesion, and self-healing abilities. Electrochemical impedance spectroscopy (EIS) revealed that within 7 days immersion, the |Z| 0.01Hz of the prepared coating was two orders of magnitude higher than that of the blank coating, and it exhibited a tendency to rebound, indicating self-healing properties. The adhesion of the prepared coating increased by 165 % compared to the blank coating. Moreover, after a 1000 h UV aging test, the prepared coating retained its self-healing abilities and surface properties. The findings show that preparation can provide effective multiple protection for coatings in complex environments. This study presents a novel approach for utilizing COFs as multi-protective fillers.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Honghe Song,Haiyan Zhu,Rui Wang,Shumei Wen,Chenghu Yan,Wei Cong
We propose a facile method for preparing polyvinylidene fluoride (PVDF) membranes with exceptional selectivity for rare earth ions and stability by UV irradiation technology using 3,3′, 4,4′-benzophenone tetracarboxylic acid (BTA) as the grafted materials. The grafting of BTA onto the membrane surface was confirmed through Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The selection factors of PVDF- g -BTA membranes for Dy 3+ over Na + , K + , Ca 2+ , and Mg 2+ were 140.57, 114.16, 74.23, and 86.25, respectively. The adsorption capacity of the PVDF- g -BTA membranes remained above 80 % following five adsorption–desorption cycles, and the contact angle remained stable throughout the 30 days of immersion.
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高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Jierui Ye,Jiamin Wang,Jingyu Li,Yiwei Li,Pan Chen,Junfeng Wang,Yuebing Gao,Qingtian Xu,Qiang Wu,Qian Li
Bamboo holocellulose emerges as a significant candidate in the field of bio-based functional materials, owing to its rapid growth cycle, high strength, and antioxidant properties. However, its flammability poses a significant critical challenge, thereby hindering the widespread application of this carbonized polymer. In this study, we present a straightforward and efficient ternary deep eutectic solvent (TDES) pretreatment strategy. Specifically, the TDES treatment was employed to chemically introduce P/N/S groups into holocellulose and lignin, resulting in the production of flame-retardant holocellulose (HC-SP) and lignin (Lignin-SP), respectively. By adjusting the ratio of these two components, nanosuspensions and nanocomposite films were fabricated through a co-grinding process. The incorporation of Lignin-SP imparted the P/N/S-containing holocellulose nanofibril composite films with exceptional flame retardancy (with a limiting oxygen index exceeding 52.5 %), substantial tensile strength (reaching 152.3 MPa), robust UV-blocking capability (blocking over 98.9 % of UV radiation), and biodegradability (degrading within 70 days). This straightforward preparation strategy for all-biobased green flame-retardant packaging materials holds promising application potential in the fields of flame-retardant food packaging.
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高影响因子
ACS Applied Polymer Materials
·
2024
·
IF 4.4
Meng Ma,Zhaoliang Jiang,Zongsheng Liu,Baoli Huang,Ni Sun,Si Chen,Yanqin Shi,Huiwen He,Yulu Zhu,Xu Wang
To enhance the flame retardancy of polylactic acid (PLA), the exploration of bioderived flame retardants has captured the focus of researchers globally. Herein, a core–shell bioderived flame retardant is prepared through electrostatic self-assembly using ammonium polyphosphate (APP) as the core and chitosan (CS)/tannic acid (TA) bilayer as the shell. In addition, the Fe3+ ion is introduced into the outermost TA shell through coordination with the phenolic hydroxyl group, which can reduce the droplets during combustion. The prepared flame retardant, APP@CS@TA-nBL-Fe3+, has core–shell structure (where “nBL” represents the number of coating layers of CS and TA bilayer) and excellent flame retardancy for PLA. With 5 wt % flame retardant, PLA/5% APP@CS@TA-2BL-Fe3+ attains the highest LOI value (31.6%) and achieves UL-94 V-0 rating in vertical combustion tests with light melt droplets. Furthermore, cone calorimetry results reveal that a reduction of 17.6% in the peak heat release rate and a 22.3% decrease in total heat release were achieved. Meanwhile, the Fe3+ catalyzes the matrix to form a micro-cross-linked char layer blocking the heat and oxygen exchange. Moreover, PLA/5% APP@CS@TA-2BL-Fe3+ not only has a 99.98% reduction in UV transmittance but also has better mechanical properties after UV aging than that of neat PLA. This study presents a convenient and environmentally friendly approach for preparing efficient biobased flame retardants for PLA, aiming to broaden the application of PLA.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Yan-nan Wang,Liyun Qin,Zhenyu Yuan,Jin Li,Fanli Meng
An optical fiber acetone gas sensor based on N-CQDs@In 2 O 3 porous ordered thin film is proposed. The probe adopts the hollow malposition structure (HMS) to excite the evanescent field on the surface of hollow-core fiber (HCF). N-CQDs@In 2 O 3 porous and ordered thin film was formed on the surface of optical fiber after calcining polystyrene (PS) microspheres at high temperature. The experimental results reveal the ultraviolet (UV) sensitization function for the proposed sensor at room temperature . The enhanced sensitivity is 7.1 pm/ppm, which is ∼5.9 times of the spiritual density of unsensitized sensor. In addition, the sensor has a limit of detection (LOD) of 500 ppb and excellent time response characteristics (response time 6.2 s and recovery time 7.1 s). The sensitization mechanism of N-CQDs to In 2 O 3 is explained by the results of the universal density function (DFT). The frontier electron orbital studies show that N-CQDs@In 2 O 3 has more abundant electron clouds. The good moisture resistance enables its stable performance in humid environment. UV sensitization is an effective way to improve the sensitivity of optical fiber gas sensor, which is of great significance for detecting the acetone gas with ultra-low concentration.
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高影响因子
危险品化学品经营许可证（带存储）