SCIENCE OF THE TOTAL ENVIRONMENT
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2025
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IF 8
Ying Zhang,Cheng Qin,Jiajia Pang,Xiaoxue Pan,Rehab Khaled Mahmoud,Xiaosheng Tang,Zunyao Wang,Ruijuan Qu
This study systematically investigated the degradation of bisphenol AF (BPAF) using a visible light-assisted magnetite/persulfate (Vis/magnetite/PS) system. Visible light irradiation significantly enhanced the activation efficiency of PS by magnetite, leading to improved BPAF removal. Under the optimal conditions, a removal efficiency of 91.7 % was achieved. Notably, while magnetite exhibited specificity toward PS activation, the system also demonstrated exceptional versatility by achieving 99 % degradation efficiency for methylene blue. Monochromatic light irradiation revealed wavelength-dependent degradation kinetics, with BPAF removal efficiencies following the order as: Vis > purple > red > blue > green > yellow light. Significant elevation in superoxide radical and singlet oxygen contribution rates occurred when transitioning from standard irradiation to monochromatic light or darkness. Four primary transformation pathways of BPAF were identified: hydroxylation, sulfate addition, bond cleavage, and coupling reactions. Photocoupling was found to selectively increase the abundance of hydroxylated and coupled products. The system reduced operational costs compared to zero-valent iron-based systems, owing to the utilization of natural sunlight and unprocessed magnetite ore. These findings provide fundamental insights into the wavelength-dependent synergism between light and magnetite in PS activation, offering a scalable and eco-friendly strategy for water and wastewater remediation.
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Laser & Photonics Reviews
·
2025
·
IF 10
Jie Wang,Dongyuan Han,Bin Zhao,Ziang Zang,Huiyu Ji,Lang Liu,Ning Wang
Tin (Sn) perovskites have emerged as viable candidates for high-performance, lead-free perovskite light-emitting diodes (PeLEDs). However, the limited availability of efficient and stable Sn perovskites, and the development of large-area Sn PeLEDs encourage further research. Here, FPEA 2 SnI 4 (FPEAI, 4-fluoro-phenethylammonium iodide) perovskite is reported as a potential emitter for PeLEDs. To overcome the anisotropic carrier transport in layered FPEA 2 SnI 4 perovskites, an electronic push-pull effect strategy is introduced by incorporating 6-amino-4-hydroxy-2-naphthalenesulfonic acid (γ acid) molecule in FPEA 2 SnI 4 perovskites. The unique electronically push-pull configuration of γ acid establishes a cross-layer electron transfer channel, which mitigates electron aggregation within the organic layers, enhances electron injection and directional transfer, and effectively promotes radiative recombination. Furthermore, multifunctional γ acid provides multiple interaction sites for Sn perovskites, reducing defect state density and stabilizing FPEA 2 SnI 4 perovskites. Leveraging the enhanced robustness of FPEA 2 SnI 4 films with γ acid, a large-area Sn PeLED with an active area of 2.25 cm 2 , achieves a maximum luminance ( L max ) of 371 cd m −2 , a peak external quantum efficiency (EQE) of 15.49%, and an operational half-lifetime of 71.6 h at 100 cd m −2 . These findings underscore the application potential of Sn PeLEDs in the realms of solid-state lighting and planar display.
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JOURNAL OF ORGANIC CHEMISTRY
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2025
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IF 3.6
Qiujie Shan,Lu-Lu Chai,David James Young,Zhi-Gang Ren,Hong-Xi Li
The light-promoted, nickel-catalyzed hydrogen-evolution C(sp3)–H acylation of simple alkanes with aromatic aldehydes has been achieved without the need for additional photosensitizers or oxidants. This reliable and atom-economical reaction afforded a broad range of aryl alkyl ketones in good yields, with H2 as the sole byproduct. It was successfully demonstrated on a gram scale as well as for the postfunctionalization of drug molecules. Aromatic aldehydes play multiple roles, including a photosensitizer, a coupling partner, and a hydrogen atom transfer agent.
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ACS Photonics
·
2025
·
IF 6.7
Yaqian Yuan,Zhongle Chen,Zhongkai Guo,Hai-Qiao Wang,Chong Geng,Shu Xu
Recent advancements in quantum dot (QD)-converted light-emitting diodes (Qc-LEDs) require on-chip deposition of mixed QDs to achieve a wide color gamut and efficient displays. However, high QD concentrations lead to significant near-field energy transfer, causing fluorescence quenching and color shifting. A thorough understanding of energy transfer dynamics between QDs is essential for minimizing energy loss and color variation in Qc-LEDs. In this study, we investigate the energy transfer processes between various green-emitting QDs and red-emitting quantum rods (QRs), focusing on how their heterostructure and morphology influence the energy transfer kinetics. Through steady-state and transient photoluminescence and absorption measurements, we identify a bidirectional energy transfer between QDs and QRs at high concentrations, influenced by their concentration, morphology, and band alignment within the heterostructures. By optimizing parameters such as rod length, QD structure, and concentration, we identify the ideal configuration of mixed QDs and QRs that maximizes system efficiency. These results provide valuable insights into the design of mixed QD systems, offering strategies to optimize light conversion in Qc-LEDs and advance the development of high-performance displays.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Min Cai,Zhaoshuang Li,Rongkang Chen,Yin He,Xu Xu,Xu-Min Cai,Wei Yuanfeng,Zhenfei Yang,Chuntao Kuang,Guoen Yang,Yan Qing,Xingong Li,Yiqiang Wu
Room-temperature phosphorescent (RTP) materials based on carbon dots (CDs) have received much attention due to their potential applications in anti-counterfeiting in recent years. However, it remains a considerable challenge to prepare CDs-based RTP materials with sunlight excitation and excellent stability. This work provides a straightforward method for one-step calcination of rosin-based carbon quantum dots (R-CDs) with aluminum hydroxide (Al(OH) 3 ) to create ecologically sustainable room-temperature phosphorescent materials (CDs@Al 2 O 3 ). CDs@Al 2 O 3 exhibit excitation dependence, emitting green phosphorescence under 365 nm excitation, yellow phosphorescence under visible light excitation, and blue-green phosphorescence under sunlight excitation. Surprisingly, CDs@Al 2 O 3 display time-dependent afterglow, switching from blue to green phosphorescence when excited at 285 nm. Furthermore, after being submerged in polar and acid-base solutions for 21 days, the phosphorescence of CDs@Al 2 O 3 is still visible to the unaided eye. At last, CDs@Al 2 O 3 composites are utilized in applications including smart flashing traffic signals, multi-level information, and anti-counterfeiting. This work expands creative application opportunities by offering a straightforward and adaptable approach to generating ecologically friendly RTP materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2025
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IF 6.3
Xin An,Xiaoqi Guo,Shuhan Zhu,Bingbing Fan,Jinpeng Zhu,Gang Shao,Hongliang Xu,Hailong Wang,Hongxia Lu
Recently, metal halide perovskites have aroused burgeoning interest in the photocatalytic field. However, issues such as lead toxicity, and narrow absorption of visible light have limited their practical application. In this study, a high-entropy lead-free perovskite nanocrystals Cs(Mn 0.2 Ni 0.2 Sn 0.2 Co 0.2 Bi 0.1 )Br 3 were successfully obtained via a solvent-free synthetic route of high-energy ball milling. The influence of Bi content on the formation of single-phase high-entropy perovskite was investigated, demonstrated by characterization of XRD, XPS, and TEM. A reasonable synthesis mechanism was then proposed. Outperforming previously studied perovskite-based photocatalysts, Cs(Mn 0.2 Ni 0.2 Sn 0.2 Co 0.2 Bi 0.1 )Br 3 with a broad visible-light absorption band tuned by high-entropy multi-ions introduction, which exhibited outstanding photocatalytic activity under simulated visible light illumination, is reported here for the first time. The introduction of high-entropy had the triple benefit of prolonging the carrier lifetime, providing more active sites, and tuning the bandgap structure, which in turn is responsible for improving the photocatalytic activity. Finally, a removal efficiency for Rhodamine B of over 97 % within 60 min was obtained. In addition, the unequal molar ratio of Bi resulted in shallow surface defects, which induced lower carrier recombination. The active species involved was mainly the superoxide radical ( · O 2 − ) detected by the quenching experiment. Lastly, a possible photocatalytic mechanism was proposed. This work proposes a novel solution for metal halide perovskites to improve the photoelectric performance.
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Laser & Photonics Reviews
·
2024
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IF 9.8
Ting Gong,Yang Yang,Tongtong Xuan,Wenhao Bai,Haorui Dong,Tianliang Zhou,Rong-Jun Xie
Quantum dot (QD) color conversion films (QD-CCFs) are used in ultrahigh definition (UHD) Mini-LED backlit displays due to their narrow band emission and high color purity. However, their poor light conversion efficiency (LCE) leads to greater film thickness and thus high cost. Herein, this study proposes a local light field control strategy to enhance the LCE of QD-CCFs using high-refractive BN nanosheets. The LCEs of the green and red QD-CCFs can increase from 29.9% and 34.8% to 67.4% and 91.0% after adding BN nanosheets, respectively. Combining the experimental data with the finite-difference time domain (FDTD) simulations, the enhanced LCEs can be attributed to observably increased blue light absorption and improved light extraction efficiency of the light emitted from QDs. The white Mini-LEDs, prepared by integrating the optimized QD-CCFs containing BN nanosheets with blue Mini-LED chips, show a high luminous efficiency of 70.2 lm W −1 , a high external quantum efficiency of 36.2%, and a wide color gamut of 96.3% Rec . 2020 standards. This work provides an interesting idea for designing high-efficiency QD-CCFs toward low-cost UHD Mini-LED backlit displays.
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Small
·
2022
·Vol. 18
·期 40
·2200263
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IF 15.153
Ping-Ping He,Xiaoxue Du,Yuan Cheng,Qi Gao,Chang Liu,Xiaowen Wang,Yonghua Wei,Qilin Yu,Weiwei Guo
Stimuli-responsive DNA hydrogels are promising candidates for cancer treatment, as they not only possess biocompatible and biodegradable 3D network structures as highly efficient carriers for therapeutic agents but also are capable of undergoing programmable gel-to-solution transition upon external stimuli to achieve controlled delivery. Herein, a promising platform for highly efficient photothermal-chemo synergistic cancer therapy is established by integrating DNA hydrogels with Ti 3 C 2 T X -based MXene as a photothermal agent and doxorubicin (DOX) as a loaded chemotherapeutic agent. Upon the irradiation of near-infrared light (NIR), temperature rise caused by photothermal MXene nanosheets triggers the reversible gel-to-solution transition of the DOX-loaded MXene-DNA hydrogel, during which the DNA duplex crosslinking structures unwind to release therapeutic agents for efficient localized cancer therapy. Removal of the NIR irradiation results in the re-formation of DNA duplex structures and the hydrogel matrix, and the recombination of free DOX and adaptive hydrogel transformations can also be achieved. As demonstrated by both in vitro and in vivo models, the MXene-DNA hydrogel system, with excellent biocompatibility and injectability, dynamically NIR-triggered drug delivery, and enhanced drug uptake under mild hyperthermia conditions, exhibits efficient localized cancer treatment with fewer side effects to the organisms.
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AQUATIC TOXICOLOGY
·
2022
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IF 5.202
Chun Wang,Lijuan Jiang,Wenxi Huang,Changhai Wang,Meilin He
The vertical movement of large-size and high-density MPs in the water column is usually along with dynamic changes in light intensity. However, whether the change in light availability affects the bioeffects of MPs on surrounding microalgae is currently unknown. This study investigated the effects of micron-sized polyvinyl chloride (mPVC, 143.5 μm) microplastics, alone and in combination with light intensity (from 7.5 to 162.5 μmol·m −2 ·s −1 ) on the growth and physiology of Desmodesmus sp. Although mPVC did not impact microalgal growth under optimal light (40 and 93.8 μmol·m −2 ·s −1 ), it could induce a no-contact shading effect, thereby significantly affecting the physiology of Desmodesmus sp. The growth of Desmodesmus sp. exposed to mPVC was enhanced under a high light intensity of 162.5 μmol·m −2 ·s −1 which can induce growth inhibition but was retarded when under a light inadequacy condition (20 μmol·m −2 ·s −1 ), along with a dose-dependent effect. Significantly, the photosynthesis of Desmodesmus sp. was a highly sensitive metabolic pathway to mPVC stress and largely influenced by the plastic particles under different light conditions. Additionally, mPVC modulated the energy metabolism strategy of Desmodesmus sp., depending on exposure dose and external light availability. Our findings provided a critical basis for the risk assessment of MPs in fluctuating light conditions.
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Science Advances
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2019
·Vol. 5
·期 8
·
IF 12.804
Song Zhang,Changping Wang,Hong Chang,Qiang Zhang,Yiyun Cheng
The off-on manipulation of enzyme activity is a challenging task. We report a new strategy for reversible off-on control of enzyme activity by near-infrared light. Enzymes acting on macromolecular substrates are embedded with an ultrasmall platinum nanoparticle and decorated with thermoresponsive copolymers, which exhibit upper critical solution temperature (UCST) behavior. The polymer-enzyme nanohybrids form microscale aggregates in solution below the UCST to prevent macromolecular substrates from approaching the enzymes and thus inhibit the enzyme activity, and they disassemble above the UCST to reactivate the enzyme. Upon near-infrared irradiation, platinum nanoparticles inside the enzymes generate heat through a photothermal effect to cause phase transition of the copolymers. Therefore, we can reversibly switch off and on the activities of three enzymes acting on polysaccharide, protein, and plasmid. The enzyme activities are increased by up to 61-fold after laser irradiation. This study provides a facile and efficient method for off-on control of enzyme activity.
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BIOELECTROCHEMISTRY
·
2021
·
IF 5.373
Jintao Liang,Xiaohang Shi,Huafu Feng,Min Chen,Wenzhan Li,Junxiang Lai,Weipeng Hu,Guiyin Li
In this paper, a novel silicon-based light-addressable potentiometric sensor (LAPS) has been designed for the detection of 1,5-anhydroglucitol (1,5-AG) in human serum. Reduced graphene oxide-chitosan-ferrocene (RGO-CS-Fc)/AuNPs nanohybrids and pyranose oxidase (PROD) enzyme is used to fabricate biological sensitive membrane unit by layer-by-layer assembly technology. When a bias voltage is provided to the LAPS system, the catalytic oxidation reaction between 1,5-AG and PROD to produce H 2 O 2 . The by-product H 2 O 2 can oxidize Fc(Fe 2+ ) ions in RGO-CS-Fc nanohybrids into Fc(Fe 3+ ) ions, which cause the potential of the sensitive membrane surface to change and the potential shift of I-V curve will generate a corresponding offset response. Under the optimal conditions, the potential shift of the LAPS is linearly related to the concentration of 1,5-AG at 10 µg·mL −1 –350 µg·mL −1 with the correlation coefficient of 0.97414. The sensitivity is 0.44273 mV/µg·mL −1 and the lowest detection limit is 10 µg·mL −1 . In addition, the biosensor showed good specificity, acceptable stability and satisfactory recovery rates (91.28%-107.66%), which would be a potential testing methods in actual clinical samples.
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Small
·
2025
·
IF 12.1
Zhijun Liu,Zhiying Guo,Ruoyan Liu,Zhirui Liu,Lanlan Zhai,Qian Miao,He Huang,Yun Yang,Jun Zou,Chao Zou
Quantum-confined perovskite nanoplatelets (NPLs) with ultra-narrow emission linewidths represent promising blue-emission materials for ultrahigh-definition displays. However, their practical applications have been severely hindered by material instability and poor charge transport properties. Herein, we employed thioglycolic acid (TA) and anilinium bromide (AnHBr) as dual short-chain ligands, successfully synthesizing monodisperse CsPbBr 3 NPLs with an emission peak at 463 nm and a remarkable photoluminescence quantum yield (PLQY) of 89%. This approach involves introducing TA into the perovskite precursor solution, where its carboxyl groups strongly coordinate with uncoordinated Pb 2+ on the surface to form TA-modified NPLs (TA-NPLs). Subsequently, the introduced Br − from AnHBr effectively fills existing Br − vacancies on initial NPLs’ surface to form TA- and AnHBr-modified NPLs (TA+AnHBr-NPLs). Both ligands enhance structural stability through strong interactions with the [PbBr 6 ] 4− octahedra. The resulting solution maintains stable blue emission when stored in air for 21 days and exhibits excellent photostability. The fabricated TA+AnHBr-NPLs-based light-emitting diodes demonstrate efficient deep-blue electroluminescence at 461 nm, with an external quantum efficiency (EQE) of 1.00%, CIE color coordinates of (0.146, 0.085), and remarkable spectral stability. This study offers a method for synthesizing high-stability perovskite materials and further fabricating high-performance devices.
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