INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2021
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IF 6.953
Qi Chen,Xiaorong Li,Yuan Xie,Weicheng Hu,Zhipeng Cheng,Hui Zhong,Hongjun Zhu
In this study, a nanocapsule (AL-azo/CH) was prepared with the anionic alginate-azo (AL-azo) and cationic chitosan (CH) via layer-by-layer method. Doxorubicin hydrochloride (DOX), an anticancer drug, was entrapped inside the AL-azo nanocapsules to form the DOX-loaded nanocapsules (DOX/AL-azo/CH). When the DOX/AL-azo/CH nanocapsules were irradiated with 365-nm light, the electrostatic attraction between the layers would be weakened as the trans-to-cis isomerization of AL-azo, which would lead to the UV-responsive decomposition and drug-release. Furthermore, cellular experiments showed that DOX/AL-azo/CH nanocapsules could be endocytosed by the HepG2 cells, and the confocal laser scanning microscope images showed that the DOX fluorescence intensity became stronger with the prolonging of irradiation time, indicating that the intracellular DOX-release could be controlled by UV irradiation. The AL-azo/CH nanocarriers were UV-triggered decomposition and drug-release, which stepped further towards the next-generation of nano-therapeutics with spatial and temporal external control in the field of polysaccharide .
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高影响因子
Journal of Energy Chemistry
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2023
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IF 13.1
Cheng-Kun Wu,Shuai Zou,Chen-Wei Peng,Si-Wei Gu,Meng-Fei Ni,Yu-Lian Zeng,Hua Sun,Xiao-Hong Zhang,Xiao-Dong Su
The ultraviolet (UV) light stability of silicon heterojunction (SHJ) solar cells should be addressed before large-scale production and applications. Introducing downshifting (DS) nanophosphors on top of solar cells that can convert UV light to visible light may reduce UV-induced degradation (UVID) without sacrificing the power conversion efficiency (PCE). Herein, a novel composite DS nanomaterial composed of YVO 4 :Eu 3+ ,Bi 3+ nanoparticles (NPs) and Ag NPs was synthesized and introduced onto the incident light side of industrial SHJ solar cells to achieve UV shielding. The YVO 4 :Eu 3+ ,Bi 3+ NPs and Ag NPs were synthesized via a sol–gel method and a wet chemical reduction method, respectively. Then, a composite structure of the YVO 4 :Eu 3+ ,Bi 3+ NPs decorated with Ag NPs was synthesized by an ultrasonic method. The emission intensities of the YVO 4 :Eu 3+ ,Bi 3+ nanophosphors were significantly enhanced upon decoration with an appropriate amount of ∼20 nm Ag NPs due to the localized surface plasmon resonance (LSPR) effect. Upon the introduction of LSPR-enhanced downshifting, the SHJ solar cells exhibited an ∼0.54% relative decrease in PCE degradation under UV irradiation with a cumulative dose of 45 kW h compared to their counterparts, suggesting excellent potential for application in UV-light stability enhancement of solar cells or modules.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Jiang Chang,Weimin Guo,Lijian Sun,Qiu Fu,Ying Qin,Jingyuan Zhang,Changfang Hu,Kuo Zhang,Xiaoyan Yu,Gaofeng Pan
Cellulose-based functional film materials play an irreplaceable role in daily life due to their non-toxicity and biodegradability. However, poor flame retardancy and UV to blue light blocking performance limit their application. Herein, a facile and eco-friendly impregnation-adsorption strategy was proposed to fabricate transparent and biodegradable multifunctional cellulose films. Safflower yellow (SY) and phosphorylated sodium alginate (PSA) are used as functional components to give films powerful light blocking performance, exhibiting UV-A and UV-B blocking efficiencies spanning from 89.2 % to 98.9 % and 87.9–98 %, respectively. Meanwhile, the films could block 89.8–98.9 % of high-energy blue light (HEBL) while retaining high transmittance (80.8–83.8 % at 600 nm). Meanwhile, the films are effective at blocking HEBL that comes from lighting system, computer screen, and smartphone screen. Compared with commercial shielding films, the films demonstrated superior capabilities in filtering out UV and HEBL. Furthermore, the film exhibits stable UV and HEBL shielding properties under both thermal treatment and UV irradiation. Encouragingly, the introduction of PSA empowered the films to gain the required flame retardancy, resulting in the limiting oxygen index (LOI) surging notably from 19.1 % to 33.4 %. The peak heat release rate and total heat release of the films were significantly reduced from 183.9 to 61.7 W/g and from 8.9 to 1.9 KJ/g, respectively. Based on the hydrogen bond-electrostatic synergistic interaction among cellulose, SY and PSA, the tensile strength of films has significantly increased by 16.8–20.5 %. Additionally, these films possess favorable biodegradability. On account of extraordinary capabilities, the films demonstrate diversified applications.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2023
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IF 4.4
Yu Zhang,Ying Huang,Junhong Jiang,Jianbo Chen,Weixing Han,Yuxian Liu,Linjun Kong,Jian Gong,Minhua Su,Diyun Chen
Mg and N co-doped carbon quantum dots (Mg-N-CQDs) were synthesized and applied to alleviate oxygen toxicity by UV-B radiation and enhance antioxidative responses to wheat seedlings. It showed that Mg-N-CQDs pre-treatment attenuated the UV-B stress effects in a dose-dependent manner, as indicated by enhancing the characteristics of seed germination and early seedling growth parameters. Meanwhile, Mg-N-CQDs can be applied in plant nutrient solutions with nitrogen, phosphorus, potassium, and other fertilizers to promote the growth of seedlings. Furthermore, efficient antioxidant systems, chlorophyll content, and stability of fluorescence intensity were activated by Mg-N-CQDs pre-treatment, which effectively increased the activities of superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD), and eliminate the contents of malondialdehyde (MDA) and hydrogen peroxide, and the production rate of superoxide anion radical in the roots and germs, thereby preventing oxidative damage from UV-B stress. Notably, Mg-N-CQDs pre-treatment significantly increased the expression of related genes to improve the antioxidant capacity of roots and germs, resulting in an increased level of ATPS, CS, and GS. The mechanism study indicated that amino and hydroxyl groups and Mg, N modified CQDs could broaden the light absorption range of CQDs and improve the ability to convert blue light and ultraviolet rays to visible light, which was the main reason why Mg-N-CQDs could relieve wheat seedlings from ultraviolet stress. Therefore, Mg-N-CQDs could serve as a regulator to reduce the damage of UV-B, laying the foundation for their application in environmental protection and agricultural production.
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FUEL
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2022
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IF 8.035
Mingjia Zhang,Shule Zhang,Fanyu Meng,Mengjie Hu,Zhongyu Wang,Yiqing Zeng,Qin Zhong
Promoting the formation of Ti-OOH in the TiO 2 -based-catalyst/H 2 O 2 /O 3 system is critical to further develop the catalytic peroxone process for low-temperature flue gas denitration. In this study, a series of phosphorus-doped TiO 2 with rich Lewis acid sites and high stability was designed and established, achieving 94 % NO oxidation efficiency with less oxidant (373 K, H 2 O 2 /NO = 1.2, O 3 /NO = 0.5) and high GHSV (1.2 × 10 5 h −1 ). Combining characterizations and DFT results, a possible mechanism was proposed: phosphorus-doping enhanced the Lewis acidity, which was conducive to the adsorption and activation of H 2 O 2 . Moreover, P-TiO 2 significantly promoted the H 2 O dissociation and Ti-OOH formation process by reducing the energy barrier, thereby promoting the synergistic effect between O 3 and Ti-OOH. The semi-in-situ UV–vis DRS demonstrated that the catalytic peroxone process occurs at the solid–liquid interface and the Ti-OOH is consumed in the catalytic process. We hope this work provide a new investigation method and insight into the catalyst design.
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NUCLEAR MEDICINE AND BIOLOGY
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2026
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IF 3.1
Lei Xu,Zhenhao Dong,Hong Zhang,Antonio Arleques Gomes,Wagner de Rossi,Jing Wang,Arian Pérez Nario,Qinggang He
A post-column derivatization high-performance liquid chromatography-ultraviolet (HPLC-UV) method was developed to determine Kryptofix 2.2.2 (K2.2.2) in PET tracers. This method utilizes the specific complexation between K2.2.2 and Pb 2+ , forming a stable 1:1 host-guest complex. The complexation produces a bathochromic shift in UV absorption maximum (from 210 nm to 254 nm), enabling sensitive detection. This approach addresses the limitations of poor performance and narrow applicability associated with direct single-method detection of K2.2.2. The chromatographic conditions were optimized (column flow rate: 0.7 mL·min −1 ; derivatization reagent flow rate: 0.7 mL·min −1 ; Pb 2+ concentration: 50 μg·mL −1 ) and the method was validated. The results exhibited excellent linearity (1–100 μg·mL −1 , r 2 > 0.999), high reproducibility (relative standard deviation (RSD) < 5%), and a low detection limit (0.5 μg·mL −1 ). The method successfully quantified K2.2.2 in [ 18 F]FDG, [ 18 F]AV45 and [ 18 F]DPA714, achieving spiked recoveries of 89%–105%. Additionally, the method remained unaffected by interference from common sample components such as sodium chloride and sodium ascorbate. This method provides a novel and efficient quality control tool for the simultaneous analysis of radiochemical purity and K2.2.2 content in diverse PET tracers.
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Energetic Materials Frontiers
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2026
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IF 4.7
Kai Miao,Zi-chen Wang,Lu Wang,Yang Ran,Heng Xue,Shuang Gao,Sheng Huang,Di-chen Li
UV-curing-assisted direct ink writing (DIW) is an established additive manufacturing technique for composite solid propellants, facilitating the development aerospace propulsion systems. However, direct application to aluminum (Al)-containing propellant slurries leads to limited curing depth, attributed to the high UV absorbance of aluminum powder. To address this limitation, we propose a novel surface modification strategy in which aluminum powders are coated with polytetrafluoroethylene (PTFE), yielding PTFE@Al composite powders with a core-shell structure. UV absorbance measurements show that PTFE coatings reduce the absorbance of aluminum powder by approximately 63%. Scanning electron microscopy (SEM) confirmed the uniformity and integrity of the PTFE coatings. Thermogravimetric (TG) and differential scanning calorimetry (DSC) analyses indicate that PTFE coating significantly enhances the energy release of aluminum powder, achieving an exothermic heat output of 2.19 kJ·g -1 below 1400 °C-approximately three times that of uncoated aluminum. Furthermore, curing tests on formulations containing PTFE@Al powders demonstrated an approximate 15% increase in curing depth. These results demonstrate that PTFE@Al composite powders not only overcome the limitations of aluminum’s UV absorption but also significantly enhance photocuring efficiency and energetic output. This work presents an innovative material design strategy and a practical route for additive manufacturing of high-performance solid propellant grains.
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CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zhenqi Du,Naiyuan Liu,Yiran Jia,Huaiyu Zhang,Shunke Ding,Baozhen Liu,Yonglei Wang,Wenhai Chu
Cellar water DOM presented LMW, low aromaticity and high nitrogen contents. • Toxicity of disinfected cellar water is nearly 2.5 times that of surface water. • UV/SPC-BAC reduced chlorinated cellar water toxicity by nearly 75%. • UV-SPC-BAC mitigates toxicity by lowering DOM unsaturation and unknown CHONCl. Cellar water harvested from rooftops is recognized as a valuable alternative source for alleviating global water scarcity. Nevertheless, accumulated multi-source pollutants pose a high risk of toxic disinfection by-product (DBP) formation during disinfection. In this study, a pilot-scale system was established to control DBP-associated toxic risks. Compared with local surface water, simulated rooftop-harvested cellar water contained elevated organic matter (3.18 ± 0.23 mg/L), with nitrogenous organics (CHONs, CHONSs) accounting for 49.94% of total organic molecules. Accordingly, chlorinated cellar water exhibited 2.85-fold higher cytotoxicity and 2.44-fold higher genotoxicity than chlorinated surface water. Conventional coagulation-sand filtration preferentially removed high-molecular-weight CHO fractions yet leaves abundant hydrophilic nitrogenous organics uneliminated. In contrast, the ultraviolet/sodium percarbonate-biological activated carbon (UV/SPC-BAC) process drastically reduced molecules from 6687 to 3113, with marked declines in CHONs and CHONSs. Separate UV/SPC oxidation or BAC filtration reduced DBP-related toxicity by only 20.2% - 30.6%, whereas the combined UV/SPC-BAC process achieved nearly 72.0% toxicity reduction. Significant declines also occurred in the calculated additive toxicity index of known DBPs and the abundance of unknown DBPs. Mass difference analysis revealed that UV/SPC-BAC preferentially eliminates unsaturated and nitrogenous fractions, suppressing oxygen addition during post-chlorination and mitigating nitrogenous DBP formation potential and toxicity. Download: Download high-res image (214KB) Download: Download full-size image
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Le Zhang,Yuxin Zuo,Sijia Sun,Jianmeng Zhang,Xuan Wang,Minghao Fang,Hao Ding
To improve the long-term UV stability of outdoor architectural coatings, a SiO₂ shell was coated onto the primary product of TiO 2 (P-TiO₂). The primary product of TiO 2 coated with SiO 2 shell (P-TiO 2 @SiO 2 ) composite particles were prepared via a sol–gel method, forming a uniform and dense SiO 2 coating layer on the P-TiO 2 surface to enhance its UV-shielding performance. The P-TiO₂@SiO₂ composite particles were used to construct a superhydrophobic coating by a simple two-step spraying process. KH560-modified E-51 epoxy resin was used as the adhesive layer, followed by spraying of the P-TiO₂@SiO₂/HDTMS hydrophobic layer. After 30 days of UV irradiation, the coatings containing P-TiO 2 @SiO 2 as the filler exhibited a color difference (ΔE*) of only 0.38 and a yellowing index (Δb*) of 0.23, significantly lower than those with pure P-TiO 2 (ΔE*=1.64, Δb*=0.76). It indicated that the SiO 2 shell effectively reduced color change and yellowing. Furthermore, the amorphous nanoscale SiO 2 uniformly coated on the P-TiO 2 surface contributed to the formation of a rough surface morphology. After modification, the superhydrophobic coatings achieved a water contact angle (WCA) of 161.5° and a sliding angle (WSA) of 1.23°. The coatings demonstrated excellent superhydrophobicity and self-cleaning performance on multiple substrates, including concrete, wood, and bricks. Moreover, they maintained stable superhydrophobicity after 60 days of continuous UV irradiation. Abrasion tests indicated that the incorporation of the KH560-modified epoxy resin primer significantly improved the wear resistance of the coatings. After 21 abrasion cycles, the coatings retained superhydrophobicity, whereas coatings without a primer lost superhydrophobicity after only 9 cycles. The superhydrophobic coatings prepared in this study were superhydrophobic, self-cleaning, UV-aging-resistant, fluorine-free, and wear-resistant without introducing traditional organic UV absorbers and hindered amine light stabilizers. The preparation process was simple, and the coatings exhibited stable and reliable performance, demonstrating promising applications in long-term outdoor protective and self-cleaning coatings. Download: Download high-res image (261KB) Download: Download full-size image
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APPLIED SURFACE SCIENCE
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2026
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IF 6.6
Qiyang Hong,Yinzheng Xia,Chen Wang,Yue Li,Qianhong Shen,Hui Yang
Cerium-based oxides have been widely reported as nanofillers to enhance the corrosion resistance and UV-aging stability of epoxy coatings. However, their protective performance primarily originates from defect states associated with Ce 3+ and oxygen vacancies in the lattice, which are typically present in limited quantities. In this study, zirconium-doped cerium oxide (CeZrO x ) nanoparticles were anchored onto hydroxylated boron nitride nanosheets (BNNSs) via a hydrothermal method. Zr doping significantly increases the concentration of defect states, thereby improving the UV absorption capacity and antioxidant activity of the nanofillers. The heterostructured BNNSs not only reduce the agglomeration of CeZrO x nanoparticles but also provide an effective passive barrier against corrosion. Electrochemical analyses revealed that cerium-based oxides increased the corrosion potential and influenced the anodic corrosion process, while Zr doping further promoted the formation of a dense protective Fe 3 O 4 passive film at the metal/coating interface. When incorporated into a waterborne epoxy matrix, CeZrO x @BNNS-EP exhibited markedly improved anticorrosion and anti-UV performance compared with coatings containing undoped CeO 2 @BNNS. After 24 h of UV aging, CeZrO x @BNNS-EP maintained an impedance modulus of 1.99 × 10 9 Ω/cm 2 after 12 d ays of immersion in 3.5% NaCl solution, which was eight times higher than that of the undoped counterpart. These enhancements are attributed to the increased antioxidant capacity and free-radical scavenging activity imparted by Zr doping, which facilitate anodic passivation during corrosion and mitigate UV-induced degradation. Overall, this work provides both mechanistic insight and practical guidance for the rational design of cerium oxide–based nanofillers for corrosion- and UV-resistant coatings.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Lei Wang,Minjie Chen,Anhong Cai,Hanxuan Zeng,Xiaoyan Ma,Qingsong Li,Xueyan Li,Jing Deng
Chlorine activation-inefficiency and the generation of disinfection by-products (DBPs) have indeed limited the application of the UV/chlorine process. In this study, zinc ferrite nanorods (ZFO-R) with excellent photovoltaic properties were successfully prepared for the construction of a novel heterogeneous UV-LED-driven chlorine activation system. The addition of ZFO-R increased the first-order reaction rate constant for the degradation of carbamazepine (CBZ) by the UV-LED/chlorine process by 6 times. Mechanism investigation indicated that superoxide radicals (O 2 − ) dominated the generation of hydroxyl radicals (HO ) and chlorine radicals (Cl ) in the system by promoting the activation of HClO/ClO − , and the increased yields of HO and Cl enhanced their contribution to the degradation of the target pollutants. Importantly, the efficient activation of chlorine not only promoted the generation of reactive species but also inhibited the formation of DBPs by shorting the contact time between chlorine and precursors, which effectively controlled the toxicity of the reaction system. This work proposes a reliable strategy for inhibiting DBPs formation in the UV/chlorine process and broadens the application of spinel ferrites in environmental remediation, achieving efficient and reliable purification of actual micropolluted water bodies.
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PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Guolin Zheng,Yifan Cui,Zhe Jiang,Man Zhou,Ping Wang,Yuanyuan Yu,Qiang Wang
Natural enzymes as green and efficient biocatalysts are essential in constructing multifunctional organic coatings for meeting the green chemistry processes. Herein, the laccase activity was for the first time enhanced by synergistic drive of near infrared (NIR) laser, dodecyldimethyl (3-sulfopropyl) ammonium hydroxide internal salt (SDDAB), and sodium chloride (NaCl). The SDDAB activation on laccase activity is unpredictable, which is advanced compared with conventional predictable ones, including adding mediator and improving reactive temperature. The NaCl can again boost the laccase activity by 29.8 % in the presence of SDDAB. Moreover, NIR laser irradiation again promotes laccase activity by 16.3 % in laccase/SDDAB/NaCl. The total specific activity of laccase exhibits an improvement of 29.2 %, indicating an advancement compared with the activities decrease in immobilized and encapsulated laccases. The Vm of laccase has been improved to 150.9 %. Besides, the hydrogen bonds and van der Waals force between laccase and SDDAB have been verified. Thus, laccase/SDDAB/NaCl was adopted to catalyze the polymerization of gallic acid to create eco-friendly UV-resistant, antioxidative, and photothermal coatings for healthcare. The ultraviolet protection factor (UPF), free radical scavenging ability, and photothermal temperature are 126.28, 95.0 %, and 94.2 °C, respectively. The multifunctional coating not only exhibits the response of sunlight-like photothermal conversion, but also possesses the photothermal response mediated by NIR laser. With the intensity increase of NIR laser irradiation, the surface temperature of modified cotton fabric is gradually strengthened from 29.5 to 43.8 °C. The surface characteristic and chemical composition of the multifunctional coatings were investigated by modern technology. The smartphone was adopted to quickly detect the red, green, and blue (RGB) values for demonstrating the successful fabricating of composite coatings , compared with traditional K/S characterization. Briefly, this work provided a novel, feasible, and elegant idea to boost laccase activity, inspiring more scholars to create advanced organic coatings with natural enzyme as the high-performance green catalysts for meeting green chemistry processes.
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危险品化学品经营许可证（带存储）