JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Yuhan Tao,Yi Dong,Jingjing Xu,Mindong Chen
Ion doping represents a viable strategy for improving the photocatalytic performance of semiconductor materials. This study successfully synthesized Sn 4+ -doped Bi 4 O 5 I 2 photocatalysts through an in-situ calcination approach. Structural characterization confirmed that Sn 4+ incorporation induced lattice contraction while increasing the density of active surface sites. Photocatalytic evaluation revealed that the 10 % Sn-BOI catalyst achieved 95.4 % levofloxacin (LOFX) degradation within 40 min under visible light irradiation, exhibiting a reaction rate constant (k) 5.2-fold greater than undoped Bi 4 O 5 I 2 . The catalyst demonstrated excellent stability, retaining high activity through four consecutive recycling tests. Mechanistic studies showed that oxygen vacancies (OVs) generated during doping modified the electronic structure by elevating the valence band maximum and narrowing the bandgap, while simultaneously promoting charge separation through electron trapping. These findings establish an effective methodology for developing photocatalysts to address antibiotic pollution in wastewater.
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JOURNAL OF INORGANIC BIOCHEMISTRY
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2025
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IF 3.2
Anadil Gul,Munir Ahmad,Rizwan Ullah,Kamran Ullah,Wenchao Liao,Yan Kang
Metallophthalocyanines (MPcs) are highly promising photosensitizers owing to their exceptional photoelectronic properties, yet their practical photocatalytic applications are often limited by strong π–π self-aggregation. In this study, we report a facile in situ strategy to incorporate cobalt phthalocyanine (CoPc) into the porous matrix of UiO-67 metal-organic frameworks (MOFs), effectively suppressing aggregation and enhancing photo-activity. The resulting composite, UCoP2–32, exhibited outstanding antibacterial photodynamic therapy (APDT) performance under visible light, achieving over 96 % inactivation of methicillin-resistant Staphylococcus aureus (MRSA) within 12 min of light exposure. Photophysical studies confirmed the efficient generation of both type-I and type-II reactive oxygen species (ROS), with superoxide and hydroxyl radicals predominating, and electron spin resonance (ESR) analysis supported this mechanism. Moreover, UCoP2–32 demonstrated excellent biocompatibility with minimal hemolysis (~6.4 % at 110 μM) and structural stability. This work provides a robust and broadly applicable strategy for integrating MPcs into MOFs, offering significant potential for the development of high-performance photocatalytic materials in antimicrobial and other light-driven applications.
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高影响因子
VACUUM
·
2025
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IF 3.9
Aijia Sun,Yang Zhao,Jiamu Li,Han Lai,Huayi Li,Zhengchun Yang,Jie He,Peng Pan,Rui Zhang
Plastic pollution represents a significant global environmental challenge requiring advanced mitigation strategies. This investigation systematically examines the photocatalytic degradation performance of CuO/TiO 2 composites to prove the feasibility of rapid degradation of polyethylene terephthalate (PET). Various advanced characterization methodologies, including Scanning Electron Microscopy (SEM), X-ray Diffractometry (XRD), and X-ray Photoelectron Spectroscopy (XPS), were employed to verify the successful synthesis of nanocomposites and elucidate their distinctive structural attributes and superior photocatalytic functionality. Implementation of a two-step photocatalytic degradation protocol enabled PET to achieve remarkable mass reduction of 97.39 ± 0.79 % after 2 h illumination, representing approximately 30-fold enhancement compared to untreated PET samples. Furthermore, the use of PET film as a pollutant verified the practical feasibility of this method, highlighting the potential of CuO/TiO 2 composites for plastic degradation. Complementary free radical quenching experiments and electron paramagnetic resonance (EPR) spectroscopic analyses identified hydroxyl radicals (•OH) as the predominant active species governing PET decomposition pathways. The proposed mechanistic model elucidates the synergistic effects of interfacial energy band modifications between constituent semiconductor components, which critically enhance photoinduced charge carrier separation efficiency. Notably, the study not only achieved the efficient degradation of PET but also provided an efficient method for solving environmental plastic pollution in the future.
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Advanced Optical Materials
·
2025
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IF 7.2
Maolin Mu,Wen Li,Lunyao Pan,Xiankan Zeng,Qungui Wang,Yongjian Chen,Chenglong Li,Di Shen,Xinning Wang,Shiyu Yang,Hongqiang Xin,Weiqing Yang
Achieving balanced charge injection and transport in perovskite light-emitting diodes (PeLEDs) remains challenging due to the large energy level offset between the indium tin oxide (ITO) electrode and the hole transport layer, coupled with an unsatisfactory hole injection capability. Given that Cu 2 ZnSnS 4 (CZTS) offers a deep valence band maximum, high hole mobility, high stability, and cost-effectiveness. Here, CZTS is introduced as a hole injection layer between the ITO and poly(9-vinylcarbazole) (PVK) layers to align energy level and increase hole injection capacity. The huge difference between CZTS and PVK work functions creates a robust interfacial electric field, resulting in an interfacial dipole effect, which significantly enhancing hole injection and boosting the carrier radiative recombination efficiency. Meanwhile, the robust CZTS/PVK interface favors high-quality FAPbBr 3 films with good morphology and reduced defects. The resulting optimized PeLEDs with a peak emission wavelength of 529 nm achieve an external quantum efficiency (EQE) of 15.44%, a turn-on voltage of 3 V and current efficiency (CE) of 75.3 cd A −1 , significantly outperforming the control devices, which exhibit an EQE of 7.55%, a turn-on voltage of 3.4 V and CE of 35.4 cd A −1 . This study provides novel insights into constructing efficient PeLEDs through enhanced hole injection using CZTS.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Fengping Yang,Dengsheng Zheng,Libin Zhang,Jiamin Yuan,Liliang Wang,Min Long,Yanzhen Yin,Ke Sun,Cong Liu,Hongxiang Zhu,Tao Liu
The emergence of antibiotic-resistant superbugs has heightened concerns about environmental pollutants such as tetracycline hydrochloride, necessitating effective removal strategies. Among various treatment approaches, interfacial modification means to realize efficient pollutant removal is an ideal method. In this study, a breakthrough in photocatalytic technology was achieved by developing a novel material that combines excellent adsorption capacity with enhanced photocatalytic performance. The innovation lies in our pioneering implementation of a third-component doping strategy, which enabled the construction of an organic semiconductor intrinsic heterojunction photocatalytic layer with an A-D-A structure, integrated onto a natural biomass carbon substrate. This strategic integration creates a synergistic system wherein the natural biomass carbon component rapidly concentrates pollutants, while the organic semiconductor bulk heterojunction photocatalytic layer generates electrons and free radicals for degradation. The material's exceptional performance is evidenced by its ability to completely degrade 20 mg/L of tetracycline hydrochloride within 30 min, establishing a new benchmark in treatment efficiency. Through density-functional theory (DFT) analysis, we have elucidated the underlying degradation mechanism, providing theoretical insights that may facilitate the development of advanced treatment solutions for a broader spectrum of organic pollutants through adsorption photocatalysis.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Shuai Yang,Xiaoyun Yang,Zijian Song,Yingchun Li
Herein, we report light/electric synergistic-triggered shape memory poly(aryl ether ketone) (PAEK) composite actuators with enhanced shape memory behaviors that are able to fulfill the shape deformation process for various application opportunities. Composite actuators exhibit great shape memory behaviors with a high shape recovery ratio (95.1%–99.2%) and fixity ratio (over 96%). Besides, we construct light/electric synergistic-triggered shape memory behaviors, which are achieved through the prior softening of molecular chains by irradiating firstly, and then triggered by applied voltage. The shape recovery ratio of these light/electric synergistic-triggered shape memory effect (SME) reaches up to 89.6%, which is higher than the electric-triggered SME of 75.1%, indicating enhanced shape memory behaviors. As a comparison, we construct light/electric synchronous-triggered shape memory behaviors, and the recovery ratio is 85.8%. Due to the enhanced shape memory behaviors, these light/electric synergistic-triggered shape memory composite actuators fulfill the shape deformation process for various application opportunities.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Guangbin Chen,Wei Li,Jian Zhao
Tetracycline (TC) is a kind of widely used antibiotic and its improper discharge to the environment brings serious threats to ecosystems and human health. The photocatalytic degradation of these organic pollutants with CuFe oxide attracts many attentions. High-entropy oxide (HEO) emerges as a promising material recently due to its excellent activity and stability in various fields. In this study, CuFe-based HEO with ultrathin nano-micro-sheet (Cu y Fe z Ce 4 Al 0.5 Zr 0.5 O x , thickness ∼5.63 nm) was successfully fabricated and utilized as an efficient photocatalyst for TC removal under visible-light irradiation. By controlling experiments and adjusting the Cu/Fe atomic ratios, we found that CuFeO x with the same structure as CuFe-based HEO cannot be obtained without adding other elements and specific Cu/Fe ratio is required for the HEO formation. The optimized Cu 2 Fe 2 Ce 4 Al 0.5 Zr 0.5 O x HEO (Cu 2 Fe 2 ) could achieve 73.1 % degradation efficiency of TC with 53.1 % of total organic carbon (TOC) removal, much higher than CuO and Fe 2 O 3 mono-counterparts. Mechanism investigation showed that the CuFe-based HEO works with O₂·⁻, h⁺ and e⁻ as main active species, probably in a different reaction path from Fe 2 O 3 or CuFeO x system due to the high entropy effect. This study provides an experimental basis for HEO materials design and gives insights on the photocatalytic organic pollutants’ degradation with CuFe-based HEO.
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CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Feiyan Xie,Junqiang Gu,Dekang Xu,Jiao Zou,Lihong Liu,Xuan Zhu,Sitong Lin,Huihao Zhong,Jinyu Yang
In the field of white-light LED lighting technology, the development of single-phase white light emitting phosphors with excellent luminescent thermal stability has been the core research focus. This study introduced a color-tunable Na 3 YSi 2 O 7 : x Tm 3+ , y Dy 3+ (abbreviated as NYSO: x Tm 3+ , y Dy 3+ ) phosphor. Under an excitation wavelength of 351 nm, through the energy transfer (ET) process from Tm 3+ to Dy 3+ dominated by dipole-dipole interactions and by finely adjusting the doping ratios of Tm 3+ and Dy 3+ ions, white light emission was successfully achieved in the NYSO:5%Tm 3+ ,1%Dy 3+ phosphor. The phosphor exhibited color coordinates at (0.340, 0.344), which were extremely close to the ideal white light region. Notably, the NYSO:5%Tm 3+ ,1%Dy 3+ phosphor exhibited remarkable thermal stability luminescent performance. At high temperatures of 424 K and 474 K, its emission intensity only decreased by 3.64% and 6.10%, respectively. Moreover, at a high temperature of 474 K, the chromaticity shift ( Δε ) of the phosphor was merely 6.16×10 -3 , demonstrating far superior anti-thermal quenching and luminescent color stability performance compared with similar phosphor materials. This work provided a new strategy for addressing the thermal stability issue of white LED phosphors and was expected to facilitate the advancement of white LED lighting technology.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
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IF 6.3
Lijin Cheng,Pengxiang Hao,Fei Liu,Yan Li,Yujie Zhao,Shaojun Liu
The (1-x)Mg 2 TiO 4 -xCa 0.8 Sr 0.2 TiO 3 (MT-CST) ceramic filters with intricate structures, low insertion loss and near-zero resonant frequency temperature coefficient were successfully fabricated by heated-assisted digital light processing (DLP). The excellent dielectric properties of DLP-printed ceramic filters could be attributed to the utilization of ceramic slurries with high solid loading, the improvement of forming accuracy and the control of CST content. The increasing of curing temperature could facilitate the mobility of the molecular segments and increase the activation energy of the free radicals, consequently leading to the reduction in viscosity and the improvement in curing properties of the MT-CST ceramic slurries with 57.5 vol% solid loading. The forming accuracy was regulated by fine-tuning the exposure energy densities. The excess curing width of precision model increased from 25 to 35 μm when the exposure energy densities increased from 7 to 11 mJ/cm 2 . The 0.91MT-0.09CST ceramics sintered at 1450 ℃ for 4 h exhibited excellent dielectric properties: ε γ = 17.5; Q × f = 46,800 GHz; τ f = -3.21 ppm/℃. The DLP-printed 0.91MT-0.09CST ceramic filters showed an excellent insertion loss of −1.3 dB.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Qian Wang,Mingjie Chen,Junwei Yao,Gang Zhou,Dandan Zhang,Qingshan Shi,Qianwen Mai,Xiaobao Xie
The increasing prevalence of drug-resistant bacteria and the ecological burden of synthetic antimicrobials demand sustainable biomaterials with superior antibacterial properties. Natural lignin, an amorphous polymer, presents considerable potential as a structural building block for sustainable biomaterial. Herein, inspired by antimicrobial photodynamic inactivation, kraft lignin was first reacted with formaldehyde and ethylenediamine to synthesize aminated lignin, the aminated lignin was further reacted with acetic anhydride, resulting in modified lignin. Thereafter, the modified lignin functions as a carrier, encapsulating the hydrophobic photosensitizer chlorin e6 to improve its dispersibility and aqueous solubility. Chitosan was further utilized to coat the nanoparticles, improving bacterial uptake, ultimately obtaining the desired final nanospheres (CS-ML-Ce6). Upon laser irradiation, CS-ML-Ce6 achieved >99.99 % bactericidal efficiency against methicillin-resistant Staphylococcus aureus . Additionally, it demonstrated a minimum inhibitory concentration of modified lignin of 67.71 μg/mL when exposed to light. It could result in membrane disruption and intracellular component leaking, while bacterial adsorption increased to 47.36 %. The dead/live rate of CS-ML-Ce6 against drug-resistant pathogens was almost 8-fold to modified lignin control. Concurrently, hemolysis assays with rabbit red blood cells confirmed exceptional biocompatibility, with hemolysis rates maintained below 5 % even at 6 × MIC concentrations. Considerable reactive oxygen species scavenging effectiveness at both the solution and cellular levels was also observed of CS-ML- Ce6, this dual-function approach uniquely combines light-activated bactericidal properties and dark-phase antioxidant repair. Utilizing lignin, an industrial byproduct, provides an efficient and promising antimicrobial alternative to prevent overuse of antibiotics and has significant potential for human healthcare.
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COMPOSITES PART B-ENGINEERING
·
2025
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IF 14.2
Jinbang Han,Xiuzhong Zhu,Li Tian,Naishuo Yan,Jinjie Zang,Haitao Zhang,Lei Wang,Fengshan Zhang
Exploiting inexpensive, bio-derived lignin as a partial replacement for petroleum-based polyols offers a sustainable pathway to high-value lignin applications. However, prior studies have mainly focused on lignin's reinforcing effects in elastomers, neglecting its potential photothermal properties. Lignin-modified waterborne polyurethane elastomers (LWPUxAy) were synthesized, demonstrating UV resistance, enhanced mechanical robustness, rapid light-controlled self-healing, and photothermal weldability. LWPUxAy exhibited exceptional mechanical properties (51.9 MPa tensile strength, 768.8 % elongation) and a significantly enhanced photothermal conversion efficiency due to Ag + ligand bonding. Upon near-infrared (NIR) irradiation (1.25 W/cm 2 ), LWPUxAy rapidly reached a surface temperature exceeding 160 °C within 35 s. The synthesized LWPUxAy demonstrated rapid, light-controlled self-healing and notable welding performance under near-infrared (NIR) irradiation (0.6 W/cm 2 , 5 min). Furthermore, LWPUx effectively blocked the entire UV spectrum within the 200–400 nm range. Bio-derived lignin was incorporated into light-responsive polyurethane elastomers, resulting in enhanced tensile strength and self-healing efficiency.
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DALTON TRANSACTIONS
·
2025
·
IF 3.3
Rong-Yan Zhang,Ting Zhu,Jin Zhang,Dong-Sheng Shao,Ying-Zhao Ma,Guo Peng,Xiaoming Ren
Single-component white-light-emitters ensure color stability while reducing device complexity, which are ideal candidates for white light-emitting diodes (WLEDs). However, the realization of single-component white-light emission with high efficiency and stability is still a challenge. Herein, a supramolecular cation strategy was used to synthesize the organicinorganic hybrid copper(I) halide [(AMTA)(18C6)]₂Cu₂I₄ (1), with AMTA = 1-adamantanamine and 18C6 = 18-crown-6. The structure of 1 comprises a [Cu₂I₄]²⁻ anion, formed from two edge-sharing CuI₃ triangles, and two [(AMTA)(18C6)]⁺ supramolecular cations. Compound 1 exhibits efficient white-light emission featuring dual bands centered at 480 nm and 642 nm. The CIE coordinate (0.32, 0.33) approaches the pure white point (0.33, 0.33), while the quantum yield reaches 62.09%. Such efficient white-light emission arises from two self-trapped exciton (STE) states within the inorganic unit.Furthermore, compound 1 shows remarkable stability, remaining stable for over 90 days in air and for 15 days under 75% humidity conditions. The single-component WLED fabricated using this material achieved a color rendering index (CRI) of 84, meeting the requirement for everyday lighting applications. This study demonstrates a novel approach to engineering single-component white-light phosphors suitable for solid-state lighting applications.
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