JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Hongyan Zhang,Jiehui Huang,Yuxiang Shen,Zuofang Yao,Chenchen Xing,Yanping Hou
Z-Scheme heterojunction photocatalysts can effectively suppress the recombination of charge carriers while maintaining high redox capacity. In this study, ZnTe/WO 3 (ZW) Z-scheme heterojunction photocatalysts were synthesized using a hydrothermal method, and a series of photocatalytic materials were prepared for the simultaneous removal of tetracycline (TC) and Cu(II) from water. The physicochemical and photoelectrochemical properties of the catalytic materials were characterized through various methods, including SEM, XRD, XPS, and others. The experimental results indicate that the ZW-10 % composite material exhibits the most significant removal efficiency for pollutants. Within 150 min of visible light irradiation, the removal rates for TC and Cu(II) reach 73.8 % and 73.3 %, respectively, representing a substantial improvement compared to individual ZnTe and WO 3 . Free radical capture experiments and electron spin resonance analysis reveal that ·O 2 − and ·OH are the key reactive species responsible for TC oxidation, while electrons (e − ) dominate the reduction of Cu(II).
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Solar RRL
·
2024
·
IF 6
Meijuan Ding,Mei Li,Jingzhi Wang,Zhiliang Jin
Herein, the application of graphdiyne (GDY) in photocatalytic splitting of water and hydrogen evolution is explored. In this article, GDY is prepared by ball milling using calcium carbide as raw material, and it is compounded with phosphating Mo–metal-organic frameworks (MOFs), to explore the photocatalytic hydrogen evolution performance and hydrogen evolution mechanism of composite catalysts. In the results, it is shown that the P–Mo–MOFs (PMF)/G-25 composite photocatalyst has the best hydrogen evolution activity, and the hydrogen evolution rate is highest at pH = 9, reaching 1668.5 μmol g −1 h −1 . Through the four-cycle hydrogen evolution cycle stability test, the PMF/G-25 composites still has good hydrogen evolution stability. It is shown that the combination of phosphating Mo–MOFs and GDY can enhance the hydrogen evolution activity and has excellent hydrogen evolution performance. In the Mott–Schottky test, it is found that PMF and GDY are n-type semiconductors. The conduction and valence values are −0.56 and 1.10 eV for GDY, and −0.68 and 0.97 eV for PMF, respectively. The mechanism of photocatalytic hydrogen evolution is analyzed, and it is speculated that S-Scheme heterojunction is formed between PMF and GDY to further promote photocatalytic hydrogen evolution.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Guo Danman,Wang Wen,Zhang Kaimin,Chen Jinzheng,Wang Yuyuan,Wang Tianyi,Hou Wangmeng,Zhang Zhen,Huang Huahua,Chi Zhenguo,Yang Zhiyong
Organic room temperature phosphorescence (RTP) has significant potential in various applications of information storage, anti-counterfeiting, and bio-imaging. However, achieving robust organic RTP emission of the single-component system is challenging to overcome the restriction of the crystalline state or other rigid environments with cautious treatment. Herein, we report a single-component system with robust persistent RTP emission in various aggregated forms, such as crystal, fine powder, and even amorphous states. Our experimental data reveal that the vigorous RTP emissions rely on their tight dimers based on strong and large-overlap π - π interactions between polycyclic aromatic hydrocarbon (PAH) groups. The dimer structure can offer not only excitons in low energy levels for visible-light excited red long-lived RTP but also suppression of the nonradiative decays even in an amorphous state for good resistance of RTP to heat (up to 70 °C) or water. Furthermore, we demonstrate the water-dispersible nanoparticle with persistent RTP over 600 nm and a lifetime of 0.22 s for visible-light excited cellular and in-vivo imaging, prepared through the common microemulsion approach without overcaution for nanocrystal formation.
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Nano Energy
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2025
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IF 17.1
Nasrud Din,Fawad Saeed,Sajid Hussain,Rai Muhammad Dawood Sultan,Zhang Yuyi,Premkumar Sellan,Qing Li,Zhiwei Zhao,Zhuoya Zhu,Jianming Zhou,Byung Seong Bae,Damian C. Onwudiwe,Qasim Khan,Zaman Ashraf,Wei Lei
Advanced bioimaging requires a uniform and large-area near-infrared (NIR) light illumination source. Achieving uniform light typically involves the use of inorganic near-infrared light-emitting diodes (NIR-LEDs), such as AlGaAs or GaAs, which are often complemented by additional optical components like reflectors and diffusers. However, the use of such optical components imposes limitations on their applicability and flexibility. On the other hand, Quantum dot NIR LEDs (NIR-QLEDs) offer distinct advantages for bioimaging, as they directly emit light uniformly across their entire surface, without the need for any additional optical components. However, for state-of-the-art quantum dot-based NIR LEDs, the previous NIR-QLEDs have suffered from suboptimal charge transport and rapid degradation, limiting their radiance and EQE. This work addresses these limitations by demonstrating an industrial-friendly, all-solution processing technique for NIR-QLED device fabrication with significantly enhanced radiance and efficiency by utilizing copper (Cu) doped InP/ZnSe quantum dots (QDs). Cu-doping in InP/ZnSe QDs generates localized intra-gap states, enhancing carrier trapping and radiative recombination while suppressing non-radiative pathways, leading to unprecedented NIR peak emission at 924 nm and a narrow full-width at half maximum (FWHM) of 81 nm. These intra-gap states facilitate pure NIR emission, thereby substantially enhancing the device's efficiency. Based on the energy levels of the doped InP/ZnSe quantum dots (QDs), ZnMgO and WO₃ are employed as the electron transport layer (ETL) and hole transport layer (HTL), respectively. ZnMgO and WO₃ provide favorable conduction and valence band offsets, ensuring efficient carrier injection while suppressing leakage currents. The NIR-QLED exhibited an external quantum efficiency (EQE) of approximately 16 %. With a high current density of 250 × 10⁻³ A cm⁻², the radiance improved to 62 W sr⁻¹ m⁻². The all-solution processing technique employed in this work enabled the fabrication of a large emission area measuring 35 mm × 35 mm. Under illumination from this NIR-QLED, subcutaneous deep vein images were clearly observable. Consequently, this all-solution process not only simplifies the production process but also facilitates scalability, paving the robust route for the development of larger-area devices tailored for complex bioimaging applications.
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Light-Science & Applications
·
2025
·Vol. 14
·期 1
·1-13
·
IF 23.4
Zhang Qingkai,Yang Kaiyu,Luo Chengyu,Lin Zhihan,Chen Weiguo,Yu Yongsheng,Hu Hailong,Li Fushan
Perovskite quantum dots light-emitting diodes (PeLEDs) have been developed for next-generation high resolution display applications. However, the hindered charge injection and massive charge trapping due to the insulating and defective surface of quantum dots (QDs) usually lead to a slow rise in electroluminescence (EL) response, which makes it challenging to realize ultra-high refresh rate displays with nanosecond response. Herein, an ionic liquid 1-Butyl-3-methylimidazolium Trifluoromethanesulfonate ([BMIM]OTF) was used to enhance the crystallinity and reduce the surface area ratio of QDs, which effectively decreases defect state and injection barrier at the interface. Therefore, the rise time of EL response with steady-state is successfully reduced by over 75%. We further reduce the capacitance effect by decreasing the light-emitting unit area. Thus, ultra-high resolution (9072 pixel per inch) PeLEDs with light-emitting pixel size of 1.3 μm were realized, achieving a brightness exceeding 170,000 cd/m 2 and an external quantum efficiency up to 15.79%. Moreover, it achieves nanosecond ultrafast response time under steady-state, which is the fastest response time of PeLEDs reported so far. Our work represents the most advanced performance of ultra-high-resolution PeLEDs, and provides in-depth insights into the mechanism of improving their response speed, showing significant potential in high refresh rate active display application.
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Small
·
2025
·
IF 12.1
Fuman Jing,Zuowei Zhang,Luoning Zhang,Foxin Zhou,Jing Qin,Cheng Zou,Yanzi Gao,Meina Yu,Huai Yang
Polymer dispersed liquid crystal (PDLC) exhibits excellent electro-optical properties for displays and smart windows but lacks sufficient near-infrared modulation for full solar management. Herein, a composite film with dual electrical-thermal control is designed for this purpose, which integrates PDLC film as an electrochromic layer and tungsten-doped vanadium dioxide (W/VO 2 ) coating as a thermochromic layer. The composite film not only facilitates active regulation of visible light through electrical control, but also enables the modulation of near-infrared light via phase transitions in response to temperature changes. Furthermore, the diverse chemical bonding states within the PDLC film confer it with high emissivity in the atmospheric window (8–13 µm), demonstrating remarkable radiative cooling performance. The composite film achieves 13.90% solar modulation and 54.77% visible transmittance. MATLAB simulations reveal diurnal/nocturnal cooling powers of 59.55 and 109.01 W m −2 respectively. The solar simulator test demonstrates that the film achieves a significant temperature reduction of 12.5 °C relative to blank glass substrates, while the outdoor temperature test reveals that the film achieves a sub-ambient cooling performance of 2.3 °C below the surrounding air temperature. This innovative design represents a significant advancement in smart window technology, providing extensive light and thermal management capabilities.
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Small
·
2025
·
IF 12.1
Xinyue Guo,Hongru Li,Yu Chen,Zongjia Li,Miaomiao Zhang,Jinyao Zheng,Jiang Li,Xiue Jiang,Jilin Tang
The treatment of persistent drug-resistant bacterial infections in wounds poses a significant global medical challenge. Developing innovative antimicrobial strategies capable of simultaneously achieving bacterial eradication, inflammation resolution, and tissue regeneration has become imperative. Herein, a nanocomposite featuring plasma-enhanced enzymatic activity and immunoregulatory properties is engineered, designed to reprogram the wound microenvironment and expedite healing in drug-resistant bacterial infections. Capitalizing on the localized surface plasmon resonance effect of Au@Ag nanoparticles coupled with the pH-dependent peroxidase-like (POD-like) activity of cerium dioxide (CeO 2 ), the BSA-(Au@Ag/CeO 2 ) nanocomposites orchestrate dual-modality photothermal-chemodynamic therapy for enhanced bactericidal efficacy and biofilm disruption. Upon near-infrared laser irradiation, plasmon-generated hot electrons are transferred to CeO 2 , triggering massive reactive oxygen species production via enhanced POD-like catalysis. This synergistic dual-action mechanism eradicates methicillin-resistant Staphylococcus aureus (MRSA) through membrane disruption and reactive oxygen species (ROS)-induced oxidative stress. Remarkably, the nanosystem not only suppresses proinflammatory cytokine storms but also steers macrophage polarization toward tissue reparative M2 phenotypes at infection sites, thereby alleviating pathological inflammation and fostering regenerative microenvironments. Biosafety assessments confirm the absence of discernible toxicity in vital organs. This multifunctional platform represents a paradigm-shifting strategy for managing antibiotic-resistant wound infections, providing a clinically translatable solution to combat antimicrobial resistance.
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ACS Nano
·
2025
·
IF 16
Yuhao Liu,Feng Wu,Zhengqiang Hu,Li Li,Renjie Chen
Lithium–sulfur (Li–S) batteries hold great promise due to their high theoretical energy density yet are plagued by sluggish redox kinetics and the polysulfide shuttle effect. Here, we present a light-activated solid–liquid dual-phase catalytic system that addresses these challenges by integrating soluble cobalt phthalocyanine (CoPc) molecules into the electrolyte and anchoring CoPc/carbon nanotube (CNT) composites onto the cathode. This dual-phase architecture expands the catalytic region from the electrode surface into the bulk electrolyte, establishing a dynamic and spatially extended catalytic microenvironment. Upon light irradiation, photogenerated carriers trigger a cooperative catalytic process, where liquid-phase CoPc selectively adsorbs polysulfides, while solid-phase CoPc/CNT accelerates lithium sulfide (Li2S) nucleation and growth. This synergistic mechanism significantly enhances the electrochemical performance, enabling ultrastable cycling over 2000 cycles at 8C with a capacity decay of only 0.019% per cycle. Furthermore, excellent performance is maintained under practical conditions with high sulfur loading of 10.53 mg cm–2 and low electrolyte/sulfur ratio of 4 μL mg–1. This study demonstrates a scalable strategy for constructing spatiotemporally regulated catalytic domains, providing insights into the design of advanced photoassisted energy storage systems.
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Advanced Optical Materials
·
2025
·
IF 7.2
Wei Wang,Shizheng Zhang,Sitao Huo,Fan Cao,Sheng Wang,Qianqian Wu,Rui Li,Xuyong Yang
Indium phosphide (InP) quantum dots (QDs) have emerged as eco-friendly substitutes for cadmium (Cd)-based QDs. However, their electroluminescence (EL) performance, especially for blue ones, lags significantly behind that of the state-of-the-art Cd-based counterparts. This disparity can be attributed to the abundant defect states arising from their high surface area/volume ratio and irregular size distribution caused by high-reactivity phosphorus (P) precursor. Herein, trimethylgermanium chloride is developed into the P precursor, effectively modulating the nucleation reaction rate and drastically reducing phosphorus oxide defects. Furthermore, the epitaxial growth of the ZnS layer is successfully achieved employing zinc diethyldithiocarbamate as the precursors. This approach not only facilitates superior crystallinity in QDs at lower temperatures but also effectively suppresses electron diffusion to the shell, thereby alleviating the persistent redshift and ensuring the peak position remains within the blue emissive range. Consequently, the synthesized blue InP/ZnS QDs demonstrate a PLQY of 73% at 474 nm, empowering them to exhibit exceptional EL performance with a peak external quantum efficiency of 2.38% and a record luminance of 2693 cd cm −2 .
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Zhiyue Feng,Shiqi Chen,Ke Han,Qiang Ma,Boyan Sun,Chujun Liu,Qiqi Wang,Hao Zhao,Zimo Liu,Junying He,Zhimeng Zhang,Haiyang Jiang
Infections caused by multidrug-resistant bacteria significantly hinder wound healing, highlighting the need for non-antibiotic alternatives. Here, we developed a multifunctional hydrogel platform, LAMC@PCN-224@BBR, by incorporating photodynamic PCN-224 and the natural product berberine (BBR) into lipoic acid-modified chitosan (LAMC). This design combines photo-crosslinking for enhanced tissue adhesion with photodynamic therapy (PDT) for antimicrobial activity. Upon light irradiation, the hydrogel generates reactive oxygen species (ROS), effectively eradicating methicillin-resistant Staphylococcus aureus (MRSA) and Escherichia coli ( E. coli ) with an efficiency exceeding 99 %. Its excellent biocompatibility and adaptive adhesion allow conformal coverage of irregular wounds. In a full-thickness skin defect model, the hydrogel accelerated healing by suppressing inflammation, promoting collagen deposition, enhancing angiogenesis, and polarizing macrophages toward the pro-regenerative M2 phenotype. These findings demonstrate that the LAMC@PCN-224@BBR hydrogel is a promising clinical strategy for controlling resistant infections and promoting tissue regeneration.
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ACS Nano
·
2025
·
IF 16
Jinyang Liu,Xuebo Zhang,Bingjie Zhao,Huan Ling,Yanzhong Li,Kuangshi Sun,Song Chen,Yanxin Zhang,Tianli Zhai,Yunxiang Zhang,Fuyou Li,Qian Liu
Single-molecule tracking offers nanometer resolution for studying individual molecule dynamics but is often limited by sparse labeling to avoid signal overlap. We present Red-Light-Activated Single-molecule Tracking (RE-LAST) strategy to address this challenge utilizing a photoactivatable probe, SiR670. SiR670 combines traditional silicon rhodamine with a photocage called SO, quenching fluorescence via photoinduced electron transfer (PET). Red light triggers SiR670 excitation, generating singlet oxygen that oxidizes the SO cage, halting PET and restoring fluorescence. RE-LAST used red light for both activation and imaging, eliminating harmful UV exposure. This method enables high-throughput single-molecule tracking, achieving approximately 9 times more tracks than conventional methods and allowing detailed classification of CD56 membrane protein motion. Furthermore, in situ imaging of single live cells revealed the effects of triplet quencher and oxygen scavenging system (OSS) on membrane protein dynamics. While triplet quenchers like Trolox had minimal impact on protein movement patterns, OSS significantly accelerated protein movement and increased the proportion of mobile proteins. This approach provides a comprehensive method for investigating membrane protein dynamics in living cells, contributing to further developments in cellular and molecular biology.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Peng Lin,Weiming Yi,Deli Zhang,Fang Wang,Peng Fu,Xiaoning Duan,Yuwan Sheng
The complex composition of bio-oil hinders its efficient conversion to hydrogen. This study investigates the effects of three separation methods (fractional condensation, water extraction, and molecular distillation) on bio-oil composition and subsequent reforming performance. These methods not only achieve separation but also upgrade bio-oil by enriching active components (such as acids, ketones) and removing coke precursors (such as sugars). Molecular distillation yielded light bio-oil with the highest ketone content (28.80 %) and no sugars, exhibiting optimal reforming performance: 93.42 % hydrogen yield and 94.86 % carbon conversion at 700 °C, with a catalyst lifespan of 600 min. The results demonstrate that suitable separation can enhance hydrogen production by optimizing composition and mitigating deactivation. This study proposes a new approach to promoting the efficient utilization of biomass and the production of green hydrogen from renewable resources.
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