CERAMICS INTERNATIONAL
·
2026
·
IF 6
Weiwei Men,Na Huang,Sensen Wei,Xiao Wu,Shuwei Zhang,Rongzhen Liu,Yifeng Zhao,Ruijia Ma,Zhichao Cao
The synergistic optimization of broadband electromagnetic wave transmission and high mechanical strength is a key challenge in radome fabrication. This challenge was addressed through a dual-approach: compositional optimization by doping silicon dioxide (SiO 2 ) into a Silicon nitride (Si 3 N 4 ) matrix, and structural design via an innovative skin-core sandwich architecture with a porous core. High-precision fabrication of this structure was realized using Digital Light Processing (DLP) 3D printing technology, and the slurry formulation and modification process were systematically optimized. A composite modification protocol, comprising stearic acid (SA) dry milling (20 h) and subsequent KH560 wet milling (20 h), was demonstrated to yield a slurry with a solid loading of 47 vol%, a viscosity of 8.87 Pa s (at a shear rate of 30 s −1 ), and a maximum curing depth of 89 μm. During printing, a curing depth of 65 μm was utilized. A layer thickness equivalent to one-third of this curing depth was selected, which resulted in green bodies characterized by excellent interlayer bonding and an absence of visible layer lines. After sintering, the obtained Si 3 N 4 ceramic sandwich structure exhibited outstanding comprehensive properties. Flexural strengths of 300.19 MPa and 36.15 MPa were measured for the skin and the porous core, respectively. Over the frequency range of 7-15 GHz, the average values of relative dielectric constants of 4.25 and 2.73 were recorded, with the corresponding average dielectric loss tangents of 0.0186 and 0.0054, thereby confirming that the core was successfully designed for low permittivity and low loss. Consequently, an. effective technical pathway for the design and fabrication of high-performance radome components is provided by this study.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2026
·
IF 6.7
Muxue Qin,Jingtao Zhou,Junyu Zhu,Bernard Ntezimana,Zehua Sun,Fuwei Guo,Jinjun Zhang,Youyue Zhang,Zhi Yu,Yuqiong Chen,De Zhang,Dejiang Ni
The effect of light on the aroma of green tea during the withering process is still unclear. The impact of yellow light withering on the aroma of steamed green tea was investigated. Results showed that yellow light irradiation enhanced the floral quality of the tea. Aroma dilution analysis was performed on the sample with optimal aroma under yellow light treatment (Y68) and its control (N68) using GC-O/MS, resulting in 49 aroma active compounds with flavor dilution factors ranging from 64 to 8192 were identified. Through odor activity value analysis as well as recombination and omission experiments, 8 and 7 key odorants were identified in Y68 and N68, respectively, with 5 differentiating metabolites. Addition experiments confirmed that the difference in floral intensity between Y68 and N68 was mainly caused by linalool and indole, while the differences in fresh aroma and tender aroma intensity were respectively attributed to (Z)-3-hexenol and dimethyl sulfide.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Tingyuan Pang,Xuedi Xie,Guoxian Feng,Sijia Zheng,Zhenghao Li,Jia Li,Wenying Shu,Dongsheng Peng,Xiaoshun Jian,Ling Han,Meimei Zhang
Gynecological tumors pose a serious risk to female health, and traditional therapies have many limitations. Here, we developed a near-infrared light-triggered nanoplatform (UCNPs@SiO₂-MB@PDA) for synergistic photodynamic therapy (PDT) and photothermal therapy (PTT) of deep tumors. The nanoplatform takes the UCNPs as the core, wraps the silica shell loaded with the photosensitizer MB via the inverse microemulsion method, and finally modifies the surface of the PDA. Under 980 nm excitation, the red light emitted by the UCNPs can effectively activate MB to produce singlet oxygen through luminescence resonance energy transfer, achieving PDT. At the same time, the PDA shell can efficiently absorb the multiband emitted light of the UCNPs and convert it into thermal energy, achieving PTT with a photothermal conversion efficiency of 35.6%. In vitro cell experiments have shown that the material has good biocompatibility and can be effectively internalized by tumor cells. Under near-infrared light irradiation, its killing effect on HeLa cells was considerably better than that of monotherapy, and the cell survival rate decreased to 18.9% when the cells were exposed to a concentration of 200 μg/mL. The results of the live/dead cell staining further confirmed the excellent synergistic antitumor performance of these materials. This work offers a promising strategy for the precise and effective treatment of deep tumors.
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Molecular Catalysis
·
2026
·
IF 4.3
Song Wu,Xiangqian Guo,Chenhui Qiu,Jinfeng Zhang,Hui Wan,Guofeng Guan
Light-driven CO 2 conversion to high-value chemicals has emerged as promising but challenging strategy to alleviate global energy and environmental concerns. The efficacy of this process hinges critically on the design of advanced catalysts. Herein, the metallic co-catalysts Pt deliberately anchored onto the surface of La 0.8 Sr 0.2 Co 0.7 Fe 0.3 O 3 (LSCFO) nanotubes was constructed via direct coaxial electrospinning method. Experimental analyses and density functional theory (DFT) simulations confirmed that the incorporation of Pt creates additional active sites and suppresses the recombination of photo-generated electron-hole pairs, thereby enhancing photocatalytic CO 2 reduction capability. Under visible light illumination, the optimized Pt 6 /LSCFO catalyst demonstrated a remarkable CH 3 OH yield of 7.20 μmol·g⁻¹·h⁻¹, outperforming pristine LaCoO 3 by a factor of 3.48. Moreover, the catalyst retains its structural integrity and catalytic performance over four consecutive cycles, demonstrating excellent stability. This work presents an integrated strategy via one-step coaxial electrospinning method for constructing high-performance composite photocatalysts.
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ACS Applied Materials & Interfaces
·
2026
·
IF 8.2
Shuijing Zhang,Junyi Zeng,Yanfen Zou,Chenchen Wu,Jiaxin Wang,Yuanchao Shi,Bo Yu,Jing Mu,Tinglu Ye
Port-wine stain (PWS) is a congenital capillary malformation in which ecstatic venules reside several millimeters beneath the epidermis, limiting the effectiveness of visible-light therapies that suffer from shallow penetration and significant photothermal deposition. To address these challenges, we engineered a UCNP@HMME nanoplatform that transduces near-infrared (NIR) light into visible emission to activate the photosensitizer hematoporphyrin monomethyl ether (HMME) at depth. In a vascular-rich chicken wattle model of PWS, we compared the therapeutic effect of UCNP@HMME-mediated NIR-PDT with visible-light-activated HMME-PDT. UCNP@HMME with 980 nm irradiation produced immediate purpura, progressive bleaching, and significant reductions in dermal capillaries with sustained antivascular effects. In contrast, 532 nm HMME-PDT achieved strong superficial bleaching but induced blistering and ulceration. Thermal profiling showed that 532 nm irradiation elevated blood temperature, whereas 980 nm irradiation did not measurably increase temperature, mitigating nonspecific thermal injury. These findings demonstrate that UCNP-mediated NIR activation decouples photochemical efficacy from epidermal heating, enabling deeper, safer, and more durable vascular photoablation in a PWS model.
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ACS Nano
·
2026
·
IF 17.3
Jisong Yao,Yuzhu Xu,Weichuang Guo,Siyi Yao,Jizhong Song
Pure-red light-emitting diodes (LEDs) based on CsPbI3 quantum dots (QDs) have garnered considerable attention owing to their stable emission spectra and efficient electroluminescence. However, their operational stability presently lags far behind that of state-of-the-art perovskite LEDs. Here, we employ photoactive phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide (PPO) molecules to resurface small-sized CsPbI3 QDs. The combination of sterically hindered PPO and small-sized methylacrylic acid (MA) ligands can comprehensively reduce uncoordinated Pb2+ on QD surfaces, which are related to nonradiative recombination. Moreover, the optimized QD films exhibit enhanced conductivity, showing more than 3.3-fold improvements over control QDs. Consequently, we demonstrate pure-red QD-based light-emitting diodes (QLEDs) with a maximum external quantum efficiency of up to 31.5% as well as a maximum luminance of 2434 cd m–2. More importantly, the photoactive PPO molecules release trimethylbenzoyl radicals under ultraviolet irradiation to further passivate newly generated defects in perovskites under operational conditions, thereby enabling the recovery of performance in aged devices. Based on this, we present QLEDs with an excellent operational stability (half-lifetime) of up to 300 h, representing one of the most stable pure-red perovskite QLED reported to date.
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JOURNAL OF CONTROLLED RELEASE
·
2026
·
IF 11.5
Xianmin Shi,Zijun Lin,Danni Xiao,Wanzhen Li,Jue Wang,Yuanfeng He,Conghan Wang,Gengsheng Ye,Yao Liu,Yanjuan Huang,Chunshun Zhao
Glaucoma filtration surgery (GFS) frequently fails due to uncontrolled subconjunctival scarring, driven by a cascade of postoperative inflammation, oxidative stress, and exaggerated myofibroblast activation. To address this, we developed an in-situ light-triggered hydrogel that enables strong conjunctival adhesion, bleb mechanical support, and pathology-responsive smart drug delivery for effective bleb scarring inhibition. The crosslinked hydrogel system prepared from functionalized carboxymethyl chitosan and epigallocatechin gallate (EGCG), prior to ultraviolet light (UV) exposure, was denoted as PNE hydrogel. After injection, PNE can adapt to ocular anatomy, and subsequent transconjunctival light exposure rapidly activates hydrogel crosslinking and covalent tissue adhesion, generating a mechanically robust hydrogel, denoted as PNE-UV hydrogel. Meanwhile, light-induced surface property changes further enhance conjunctival adhesion and reduce interface inflammatory cell infiltration. Concurrently, light-induced hydrophilic-to-hydrophobic hydrogel surface transition promotes water exclusion, further enhancing tissue adhesion to minimize interface inflammatory cell infiltration. With adequate mechanical strength, rapid self-healing, and good biosafety, PNE-UV provides essential mechanical bleb support during wound healing. Crucially, elevated postoperative reactive oxygen species (ROS) triggers intelligent EGCG release for over 17 days, which not only effectively scavenges ROS and promotes macrophage M1-to-M2 polarization to mitigate inflammation, but also suppresses TGF-β1-induced conjunctival fibroblast-to-myofibroblast transdifferentiation and myofibroblast proliferation. In a rabbit model of filtration surgery, PNE-UV hydrogel significantly prolonged bleb survival, reduced intraocular pressure, and decreased collagen deposition via mitigating oxidative stress and inflammation and suppressing fibrotic processes. Collectively, this interfacial adhesion and precise immunomodulation hydrogel presents an effective and clinically translatable strategy for post-GFS scarring prevention.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.9
Lin Jiang,Dingfeng Yang,Wen Jiang,Peng Dai,Ying Zhou,Congming Tang,Yuanyuan Li
A nano-layered Zn 2 In 2 S 5 photocatalyst, synthesized via a low-temperature oil bath and ultrasonic treatment, has been successfully applied to the selective photocatalytic oxidation of benzyl alcohol to benzaldehyde under visible light. The ultrasonically treated Zn 2 In 2 S 5 demonstrated excellent photocatalytic performance, achieving approximately 55.6% conversion of benzyl alcohol and selectivity towards benzaldehyde in an oxygen-free environment. Electron paramagnetic resonance and radical trapping experiments revealed that the photocatalytic conversion of benzyl alcohol to benzaldehyde is driven by photogenerated holes and carbon-centered radical intermediates. DFT calculations revealed that the S atoms of the ZnS 4 tetrahedra on the surface are the major active sites for activating benzyl alcohol. The study provides a simple approach to construct an efficient nano-layered photocatalyst, showcasing the potential of Zn 2 In 2 S 5 in photocatalytic organic synthesis reactions.
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Nature Communications
·
2026
·
IF 15.7
Zhang Xiaofei,Liu Zhengzheng,Wang Lin,Liu Junchuan,Li Qian,Wang Jihao,Liang Chaohui,Kong Lingmei,Duan Rui,Wang Sheng,Leng Yuxin,Sun Handong,Du Juan,Yang Xuyong
Blue light-emitting diodes based on reduced-dimensional pure bromide perovskites have attracted increasing attention due to their superiority in achieving stable and efficient blue emissions. Yet, the employment of abundant insulating long-chain organic spacer cations severely limits the charge carriers transport capability and electroluminescence performance. Here, we utilize short-chain iminodi(methylphosphonic acid) ligand with two-terminated phosphonic groups that can strongly interact with the lead bromide octahedra via synergetic covalent bonds, facilitating the interlayer charge transfer and simultaneously reduces the defect density in perovskite films, thereby improving the light emission efficiency. Iminodi(methylphosphonic acid) ligand also enhances the dielectric confinement, leading to higher exciton binding energy and accelerated radiative recombination in perovskite emitters. The resulting blue light-emitting diode achieves a maximum external quantum efficiency of 25.4% and an operational lifetime exceeding 800 min, which represents a significant advancement among state-of-the-art blue light-emitting diodes based on pure bromide perovskites.
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ADVANCED FUNCTIONAL MATERIALS
·
2015
·Vol. 25
·期 8
·1248-1257
·
IF 11.805
Kai Han,Qi Lei,Hui-Zhen Jia,Shi-Bo Wang,Wei-Na Yin,Wei-Hai Chen,Si-Xue Cheng,Xian-Zheng Zhang
In this study, a pH sensitive chimeric peptide is developed to codeliver a photosensitizer, protoporphyrin IX (PpIX), and plasmid DNA simultaneously. In the presence of matrix metalloproteinase-2 (MMP-2), the chimeric peptide undergoes the process of hydrolysis of PLGVR peptide sequence, exfoliation of PEG, and increase of positive charges. As a result, the chimeric peptide can be preferentially uptaken by MMP-2 rich tumor cells. To realize synergistic effect of drug and gene delivery, a dual-stage light irradiation strategy is developed, i.e., the short time light irradiation can efficiently enhance the endosomal escape of the chimeric peptide/PpIX/DNA complexes by the formation the reactive oxygen species (ROS), resulting in synergistic endosomal escape and improved DNA expression. In addition, due to the screened phototoxicity of PpIX, short time light irradiation does not lead to detectable changes in the cell viability. After the gene transfection, the screened phototoxicity of PpIX is subsequently stimulated by long time irradiation to achieve high synergistic efficacy of photodynamic and gene therapies. Both in vitro and in vivo studies confirm the chimeric peptide-based nanocarrier with a good synergistic effect is a promising nanoplatform for tumor treatments.
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JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2023
·Vol. 38
·期 5
·1003-1009
·
IF 1.6
Wang Jingjing,Zhang Yawen
Fe 3 O 4 and Cu 2 O were successively immobilized on alkali-treated straw, and the magnetically separable straw@Fe 3 O 4 /Cu 2 O composite was obtained. The straw@Fe 3 O 4 /Cu 2 O was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy and vibrating sample magnetometry, respectively. Photocatalytic performance of the straw@Fe 3 O 4 /Cu 2 O was evaluated by measuring the degradation of methyl orange (MO) under irradiation of visible light. The introduction of Fe 3 O 4 not only endowed the straw@Fe 3 O 4 /Cu 2 O with magnetic separation feature but also significantly enhanced photocatalytic activity because Fe 3 O 4 could prevent recombination of hole-electron pairs. The active species capture experiment showed that holes (h + ), hydroxyl (·OH) and superoxide (·O 2 − ) radicals all took part in the MO degradation. In addition, the photocatalytic mechanism of straw@Fe 3 O 4 /Cu 2 O was proposed based on the experimental results. After five cycles for the photodegradation of MO, the straw@Fe 3 O 4 /Cu 2 O still displayed good photocatalytic activity, suggesting that the as-prepared composite had great potential for practical use in wastewater treatment.
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JOURNAL OF HAZARDOUS MATERIALS
·
2012
·
IF 4.173
Xing Ding,Zhihui Ai,Lizhi Zhang
In this study, we report on a photo-electrochemical/electro-Fenton oxidation (PEC/EF) system by coupling visible light driven photo-electrochemical oxidation (PEC) and electro-Fenton oxidation (EF) in an undivided cell. Bi 2 WO 6 nanoplates deposited on FTO glass (Bi 2 WO 6 /FTO) and Fe@Fe 2 O 3 core–shell nanowires supported on activated carbon fiber (Fe@Fe 2 O 3 /ACF) were used as the anode and the cathode in the PEC/EF system, respectively. This novel PEC/EF system showed much higher activity than the single PEC and EF systems on degradation of rhodamine B in aqueous solution at natural pH. Moreover, the degradation and the instantaneous current efficiencies of the PEC/EF system were increased by 154% and 26% in comparison with the sum of those of single PEC and EF systems, respectively. These significant enhancements could be attributed to the synergetic effect from better separation of photo-generated carriers in the photo-anode and the transfer of photo-electrons to the oxygen diffusion cathode to generate more electro-generated H 2 O 2 and hydroxyl radicals on the Fenton cathode. The better separation of photo-generated carriers contribute more to the overall degradation enhancement than the photo-electrons generated H 2 O 2 and the subsequent Fenton reaction on the cathode during the PEC/EF process.
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