RESEARCH ON CHEMICAL INTERMEDIATES
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2025
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IF 3.5
Yang Luyao,Zou Xuehua,Wang Hanlin,Chen Tianhu,Liu Haibo,Sun Fuwei,Chen Dong
Birnessite-type (δ-MnO 2 ) exhibits a high adsorption and catalytic performance to remove organic contaminants, but it still suffers from agglomerates, low specific surface area, and uneven distribution of active sites. Here, a novel birnessite-loaded biochar (δ-MnO 2 @BC, MBC) was prepared by chemical precipitation and used for the catalytic degradation of tetracycline under visible light. The biochar provides a large number of birnessite loading sites, which increases the specific surface area of the material, and reduces the electron–hole pair complexation rate. Photocatalytic results showed that under optimal conditions, 91.89% of TC could be degraded by 20% MBC(m(δ-MnO 2 )/m(BC) = 20%) at a pH value of 3.0, with a negligible effect by solid–liquid ratio and temperature. Our evidences demonstrate that photogenerated electrons and holes serve as the key active species, whereas superoxide radicals play a supplementary role. The MBC photocatalyst exhibits excellent stability, maintaining an 85% TC removal efficiency after five recycling cycles. In addition, the proposed degradation pathways of TC were presented, suggesting a partial mineralization by visible light photocatalysis using MBC. This study provides new ideas for the treatment of antibiotic wastewater with manganese oxides and biochar materials. Graphical abstract
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高影响因子
ACS Applied Materials & Interfaces
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2021
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IF 9.229
Shengqiang Liu,Ning Mao,Zhen Song,Quanlin Liu
Near-infrared (NIR)-persistent luminescence (PersL) materials are of promising applications in labeling, tracing, bio-imaging, and so forth, featuring distinctive self-sustained NIR light emitting. The PersL radiation spectrum, PersL duration, and charging efficiency are recognized as the key enablers for high-performance NIR PersL materials. Here, we have designed and developed a series of broad-band NIR superlong PersL phosphors (Sr,Ba) (Ga,In)12O19:Cr3+ with efficient UV-red light charging capacity. Typical SrGa10.49In1.5O19:0.01Cr3+ presents intensive NIR PersL from 650 to 1000 nm peaking at ∼770 nm, with a PersL duration of 360 h. This material can be efficiently and repeatedly charged by solar radiation in various outdoor environments. Our work further identifies that this NIR PersL material is advantageous for labeling and tracing as a secret NIR additive and in situ bio-imaging as an optical probe under high tissue penetration red light excitation.
研究领域:
材料科学
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生物医学工程
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光学
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高影响因子
Nanoscale
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2024
·Vol. 16
·期 10
·5401-5408
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IF 5.8
Chang Wang,Zhaozhe Chen,Si Xiao,Jun He
The separation and transfer of photogenerated carriers in semiconducting materials are essential processes that determine the efficiency of optoelectronic devices and photocatalysts, and transient absorption spectroscopy provides a powerful support for exploring the diffusion and recombination of photogenerated electrons and holes. Herein, high-quality Cu1.81S nanoplates were synthesized by a hot injection method, and were used as starting templates for the preparation of Cu1.81S–CdS heterojunctions and CdS nanoplates by cation exchange. Their carrier dynamics were investigated by transient absorption spectroscopy, which revealed that photogenerated holes may be transferred from the CdS phase to the Cu1.81S phase under 400 nm excitation. This process is in the opposite direction to the hole transfer induced by near-infrared localized surface plasmon resonance in copper sulfide heterostructures. Moreover, density functional theory calculations were used to further explain the visible light-induced hole transport process. This transfer is a potential way to increase the rate of H2 production and enhance the photostability of the catalyst.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Tianhong Zhou,Shuming Chen
Quantum dot light-emitting diodes (QLEDs) exhibit pronounced thermal- and size-dependent charge injection, characterized by significantly enhanced current under elevated temperatures and reduce device areas. In this study, the underlying mechanisms are elucidated by examining the influence of thermal energy on carrier transport dynamics. This analysis reveals that hole transport is governed by a hopping mechanism, leading to markedly increased hole mobility at higher temperatures, which is a primary contributor to the thermal-dependent current enhancement. This improved hole injection promotes better charge balance and increase luminance. Furthermore, both thermal effect and lateral resistance is identified as key contributors to the size-dependent current behavior. Smaller-area QLEDs exhibit reduced lateral resistance and more pronounced thermal effect, resulting in higher current injection. By leveraging these thermally and geometrically enhanced hole injection characteristics, the application of QLEDs is demonstrated as multi-dimensional visual temperature sensors and realize significantly stronger emission from high-energy excitonic state (1P) transitions in small-area devices.
研究领域:
光电子学
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纳米技术
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量子点
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半导体器件
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电子器件中的热效应
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高影响因子
ADVANCED MATERIALS
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2025
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IF 26.8
Junjie Feng,Nana Chen,Hao Min,Mian Dai,Yangdi Huang,Chengcheng Wang,Ruishan Wang,Jingya Lai,Xinrui Wang,Shi Hu,Jinfeng Yu,Yue Liu,Jin Chang,Wei Huang,Jianpu Wang
Controlling the crystallization dynamics of solution-processed tin perovskites remains pivotal yet challenging for achieving high-performance lead-free optoelectronic devices. Herein, it is demonstrated that substrate-regulated interfacial nucleation governs crystal growth orientation and film quality of tin perovskites. The results show that pristine PEDOT:PSS substrates induce bottom-interface-dominated nucleation via strong PEDOT + -[SnI 3 ] n n− interactions, driving rapid upward crystallization of tin perovskites and yielding rough films with low photoluminescence quantum efficiency (PLQE: ≈26%). Strategic substrate modification with potassium citrate (PC) weakens the PEDOT + -[SnI 3 ] n n− interactions, thereby redirecting nucleation initiation to the top interface during solvent evaporation. This results in controlled downward crystallization of tin perovskites, forming smooth films with improved crystallinity and superior optoelectronic properties (PLQE: ≈41%). The optimized tin perovskite light-emitting diodes (LEDs) achieve record-breaking performance with an external quantum efficiency of 12.8% and a maximum radiance of 190 W sr −1 m −2 , which is the highest performance reported for tin perovskite near-infrared LEDs to date. This work demonstrates interface-directed crystallization control as an effective strategy for achieving high-performance tin perovskite optoelectronic devices.
研究领域:
材料科学
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光电化学
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高影响因子
ADVANCED MATERIALS
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2025
·
IF 26.8
Ran Wang,Yu Cheng,Qiran Zhang,Haoran Li,Yangyang Wang,Jiaqi Liu,Ruirui Xing,Jinming Ma,Tifeng Jiao
With the development of artificial intelligence and the Internet of Things, non-contact sensors are expected to realize complex human-computer interaction. However, current non-contact sensors are mainly limited by accuracy and stability. Herein, an intelligent infrared photothermal non-contact sensing system is developed that provides long-distance and high-accuracy non-contact sensing. A black phosphorus (BP)-based composite organogel is designed, which exhibits excellent photothermal properties and environmental stability, as the active material. This material can detect patterns created by near-infrared (NIR) light through various patterned masks monitored by an infrared thermal imager. The constructed non-contact sensing system is capable of accurately recognizing 26 letters with an impressive accuracy rate of 99.4%. Furthermore, even small size non-contact sensors can maintain high sensitivity and stability across a wide temperature range, at long working distances, and under different current intensities and dark conditions, demonstrating exceptional robustness. Combined with machine learning method, it is demonstrated that the non-contact sensing system excels in pattern recognition and human-computer interaction. These features highlight its potential applications in intelligent robotics and remote control systems.
研究领域:
材料科学
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人工智能
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传感器技术
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高影响因子
Nature Photonics
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2024
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IF 32.3
Liu Gaochao,Chen Weibin,Xiong Zhan,Wang Yuzhen,Zhang Shuai,Xia Zhiguo
High-power broadband near-infrared (NIR) light sources based on laser-excited phosphors are highly desirable for photonics applications in night vision, biomedical imaging and sensing; however, the inherent energy gap law poses a great challenge for the development of efficient NIR luminescent materials. Herein we report a translucent MgO:Cr 3+ ceramic fabricated by spark plasma sintering, which exhibits a broadband NIR emission peak at 810 nm, with an external quantum efficiency of 81% and ultra-high thermal conductivity of 52 W m –1 K –1 . When pumped with a blue laser, the MgO:Cr 3+ ceramic provides an output power exceeding 6 W with a light conversion efficiency of 29%. This laser-driven broadband NIR light source makes it possible to perform NIR imaging with a spatial resolution of 6 lp mm –1 , and is a promising technology for emerging imaging applications.
研究领域:
光子学
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夜视
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生物医学成像
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传感
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高影响因子
Small
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2025
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IF 12.1
Qikuan Cheng,Haotian Sun,Zhaohan Yu,Pengyu Gu,Yi Yuan,Jiawei Du,Beibei Huang,Dong Wang,Lu Zhang,Yunming Wang,Huamin Zhou
Responsive photonic crystals have garnered significant attention in recent years due to their remarkable capability of exhibiting dynamic color changes in response to external stimuli. Herein, a novel multistage anti-counterfeiting photonic crystal device that integrates chemical (luminescent material) and physical (photonic crystal structure) elements is reported. Based on photochromic materials and thermochromic capsules, a four-state thermochromic/photochromic photonic crystal (TPPC) composite film with dual responsiveness is developed through in situ emulsion polymerization and a straightforward roll shear technology. This innovative approach successfully resolved the issue of short-range order and long-range disorder in conventional photonic crystal films. Through the integration of a multilayer structure and a mask plate process, the dual effects of photochromic and thermochromic are seamlessly combined, enabling the film to exhibit four different optical states under the combined stimuli of temperature and UV light. Unlike tristate systems, the film integrates dual stimuli (UV + heat) for enhanced complexity. Notably, the film demonstrates multilevel responsiveness and dynamic decorative capabilities, allowing flexible switching between four optical states. Furthermore, the TPPC film boasts excellent mechanical properties (with a tensile strength exceeding 2 MPa), emphasizing its strong potential for applications in anti-counterfeiting, information encryption, and dynamic display technologies.
研究领域:
材料科学
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光学工程
·
化学工程
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高影响因子
Advanced Optical Materials
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2024
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IF 8
Chaomin Dong,Guoyi Chen,Fang Yao,Zhiqiu yu,Kailian Dong,Shengjie Du,Lishuai Huang,Cheng Wang,Ti Wang,Shuxin Wang,Weijun Ke,Guojia Fang
Perovskite light-emitting diodes (PeLEDs) present potential applications for next-generation displays due to their excellent luminescent properties and solution processing. The formamidinium-caesium lead bromide (FA x Cs 1− x PbBr 3 ) mixed cation strategy is one of the primary methods to achieve high-performance of Cs-dominate PeLEDs system. However, the inhomogeneous distribution of cations is detrimental to the photoelectronic performance of Cs-dominated PeLEDs. Here, in mixed FA/Cs perovskite films, it is observed that Cs, Br and trace Pb elements precipitated on the surface of the perovskite films. It is found that the segregation of cations is induced by the uncontrollable crystallization process of Cs/FA cations. By introducing biuret additive, the hydrogen bonding interaction of biuret and FA cation balances crystallization rate, which therefore significantly improves the crystal quality and cations distribution of perovskite films. As a result, green PeLEDs with a high external quantum efficiency of 28.8% are obtained, and represent five times enhancement in half-life time ( T 50 ) of 2.48 h at an initial luminance of 100 cd m −2 relative to the control device. The results help to understand the relationship between cationic distribution and PeLEDs properties, offering significant insights for modulating the performance of PeLEDs.
研究领域:
材料科学
·
光电技术
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高影响因子
POLYMER
·
2026
·
IF 4.5
Yu Fang,Qi Shi,Jinping Qu,Xiang Lu
Efficiently integrating solar and ambient thermal energy within a single molecular system remains a significant challenge. Here we systematically construct a family of azobenzene-based molecules in which photoisomerizable cores are covalently coupled with thermally active alkyl and alkenyl segments. Unlike previous studies focusing on isolated examples, our approach establishes a homologous molecular series that enables direct correlation between structural parameters and dual-mode energy storage behavior. Upon ultraviolet irradiation, the trans -cis isomerization induces lattice disorder and photo‐liquefaction, allowing simultaneous capture of photon energy and latent heat. The reverse process triggered by light or heat releases both chemical and phase-change enthalpies in a single synergistic step. The system exhibits a gravimetric energy density exceeding 300 J g −1 , demonstrating a competitive performance among reported materials. Combined density functional theory and calorimetric analyses quantitatively link the isomerization energetics with crystal packing variations, establishing a predictive relationship between molecular design and thermophysical performance. This systematic strategy provides a data-driven framework for designing programmable photothermal materials and paves the way for high-throughput molecular energy computation.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
·
IF 9.7
Xuejiao Wang,Zhi Su,Lan Zheng,Kaifa Zhao,Qiyang Cai,Xiangyu Wei,Yaqing Zhao,Yan Ke,Yuelu Fan,Hu Zhu
Inspired by nature's sophisticated use of light energy, we report a bioinspired antibacterial trap switch operating without exogenous competitors. This work engineers a light-gated supramolecular system where host-guest conformational reorganization between cucurbit[8]uril (CB[8]) and dicationic symmetric azobenzene derivative (Azo- E ) enables precise control over antimicrobial agent release. Upon ultraviolet (UV) irradiation triggers E - Z isomerization, enhancing its binding affinity to CB[8] and resulting in steric displacement of the encapsulated antibacterial agent through conformational reorganization. This system achieves >99.9% bacterial eradication, supports reversible switching across four conventional antibacterial agents, and reduces mammalian cell cytotoxicity. Spray-coatable on different biomaterial surfaces, it demonstrates spatial precision for localized disinfection. This molecular engineering establishes a general platform for spatiotemporally precise regulation of bioactive cargoes, enabling adaptive supramolecular systems with infection control.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2026
·
IF 0
Su Yi,Zhang Jie,Zhao Yang,Feng Qinjing,Zhai Hongfan,Liu Jiawang,Yang Fengli
Tetracycline (TC), as a widely used antibiotic, poses significant environmental safety risks due to its persistence and bioaccumulation. Titanium dioxide (TiO 2 ) is a wide bandgap photocatalyst, and it only responds to ultraviolet light and has a low utilization of visible light, which severely restricts its applications. In this study, 12%BN/TiO 2 nanosheets obtained by a simple hydrothermal method combining hexagonal boron nitride (h-BN) and titanium dioxide (TiO 2 ) and the removal rate of TC almost reaches 99.7% within 30 min under simulated sunlight. Moreover, there was almost no change in the activity of the catalyst after it was recycled five times. XPS results demonstrate that the formation of the B-O-Ti bond in 12% BN/TiO 2 leads to a rearrangement of the energy levels within TiO 2 . This structural modification effectively narrows the band gap of the material, thereby significantly enhancing its ability to utilize visible light. Furthermore, the interfacial effect between h-BN and TiO 2 enhances the separation and migration of photogenerated electron–hole pairs. •O 2 − radicals are the main active species in the degradation of TC. This study confirmed that the BN/TiO 2 system had excellent photocatalytic activity and provides an effective approach for constructing high-performance photocatalysts. Graphical
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