ACS Omega
·
2022
·
IF 4.132
Jingyu Zhao,Rong Song,Hui Li,Qianqi Zheng,Shaomei Li,Lejun Liu,Xiaogang Li,Lianyang Bai,Kailin Liu
Pest control effectiveness and residues of pesticides are contradictory concerns in agriculture and environmental conservation. On the premise of not affecting the insecticidal effect, the pesticide residues in the later stage should be degraded as fast as possible. In the present study, composite nanoparticles in a double-layer structure, consisting of imidacloprid (IMI) in the outer layer and plant hormone 24-epibrassinolide (24-EBL) in the inner layer, were prepared by the W/O/W solvent evaporation method using Eudragit RL/RS and polyhydroxyalkanoate as wall materials. The release of IMI in the outer layer was faster and reached the maximum within 24 h, while the release of 24-EBL in the inner layer was slower and reached the maximum within 96 h. The contact angle of the composite nanoparticles was half that of the 5% IMI emulsifiable concentrate (EC), and the deposition of composite nanoparticles on rice was twice that of 5% IMI EC, which increased the pesticide utilization efficiency. Compared with the common pesticide, 5% IMI EC, the insecticidal effect of the composite nanoparticles was stronger than that of planthoppers, with a much lower final residue amount on rice after 21 days. The composite nanoparticles prepared in this study to achieve sustained release of pesticides and, meanwhile, accelerate the degradation of pesticide residues have a strong application potential in agriculture for controlling pests and promoting crop growth.
研究领域:
农业科学
·
环境科学
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DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Yunxuan Cao,Xingfu Wang,Juanjuan Sun,Ling Xiang,Dongyang Li,Longfei He,Fangliang Gao,Changsong Chen,Shuti Li
The high-density defect states existing at the grain boundaries and heterojunction interfaces induce nonradiative charge recombination and ion migration processes within perovskite film, which seriously impair the device efficiency and stability. Here, we propose a novel synergistic ion-anchoring passivation (SIP) strategy for high-performance perovskite solar cells, by designing a multifunctional molecule to heal the charged defects via electrostatic interactions. The anion and cation species of the multifunctional molecule are rationally screened via high-throughput DFT simulation and experimental verification, which act as efficient surface passivation agents to heal the lead- and iodine-related defects. As a result, the defect-less perovskite films deliver encouraging device power conversion efficiency >24% with negligible hysteresis. A remarkable open-circuit voltage (Voc) of 1.17 V was obtained with a Voc deficit of 370 mV, featuring the outstanding defect-passivation capability of the SIP strategy. Moreover, the SIP-treated devices show exceptional ambient stability and maintain 70% of the initial efficiency after 150 h of high humidity exposure (relative humidity 70%–80%). Our results highlight the importance of the rational design of passivation agents to realize high-performance perovskite electronics.
研究领域:
材料科学
·
能源科学
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DOI
PubMed
高影响因子
Frontiers in Veterinary Science
·
2024
·
IF 2.6
Muhammad Waqqas Hasan,Muhammad Haseeb,Javaid Ali Gadahi,Muhammad Ehsan,Qiangqiang Wang,Shakeel Ahmed Lakho,Ali Haider,Muhammad Tahir Aleem,Kalibixiati Aimulajiang,Mingmin Lu,Lixin Xu,Xiaokai Song,Xiangrui Li,Ruofeng Yan
Haemonchus contortus poses a global challenge as a parasite affecting small ruminants, yet the problem of absence of an effective vaccine against H. contortus infection still exists. This investigation sought to appraise the immunological reaction induced by recombinant H. contortus excretory/secretory-24 (rHcES-24) in combination with complete Freund’s adjuvant (CFA) and bio-polymeric nanoparticles (NPs) within a murine model. In this study, rHcES-24 was encapsulated in poly(d, l-lactide-co-glycolide) (PLGA) and chitosan (CS) NPs, administered subcutaneously to mice. Researchers analyzed the NPs using scanning electron microscope (SEM) and assessed lymphocyte proliferation, specific antibodies, cytokines, T cell proliferation (CD3e+CD4+, CD3e+CD8a+), and phenotypic alteration in splenocytes (CD11c+CD83+, CD11c+CD86+) through flow cytometry to understand the immune response. The results demonstrated that the administration of nanovaccines (NVs) prompted immune responses towards Th1 pathway. This was indicated by notable enhancements in the production of specific antibodies, heightened cytokine levels, and a robust proliferation of lymphocytes observed in mice that received the NVs compared to control groups. Remarkably, mice vaccinated with the antigen-loaded NPs formulations exhibited considerably higher proportions of splenic dendritic cells (DCs) and T cells in comparison to those receiving the traditional adjuvant or the control groups. Incorporating HcES-24 protein into NPs effectively conferred immunity against H. contortus, paving the way for developing a targeted and commercial vaccine.
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Xiangxue Lv,Haimin Li,Shijie Ren,Zheng Zhang,Haohui Li,Bo An,Yuhao Wei,Jia Liao,Xingchong Liu,Hanyu Wang
Thiourea has been employed for the modification of perovskite (PVK) films and demonstrates favorable modification effects. However, few studies have addressed the binding mode of thiourea (Th) with perovskite crystal facets. In this work, DFT calculations reveal that thiourea exhibits a perpendicular binding orientation to the (100) facet of perovskite, enabling the lone pair electrons of the S atom in the C═S bond to interact with undercoordinated Pb atoms. Meanwhile, due to charge transfer, the −NH2 group and the S atom form bonds with positively charged sites in perovskite. PL, TRPL, SCLC, and KPFM results indicate a significant reduction of defects in the PVK. Eventually, the Th-perovskite device yielded a notable improvement in performance: open-circuit voltage (VOC) increased from 1.12 to 1.16 V, short-circuit current density (JSC) rose from 24.48 to 25.13 mA/cm2, the fill factor (FF) reached 82.35%, and the power conversion efficiency (PCE) was enhanced from 21.90% to 24.01%. Importantly, the devices retained 80% of their initial efficiency after operating for 15 days under 50% relative humidity, demonstrating significant progress in moisture tolerance for practical applications. This work highlights that vertical binding of small organic molecules to the perovskite facet surface can more effectively enhance the performance of photovoltaics.
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DOI
PubMed
高影响因子
ENERGY
·
2026
·
IF 10.1
Feiyang Xu,Jing Li,Zhen Zhu,Chuting Lai,Wenluo Li,Niansi Li,Bendong Yu
In hot and humid climates, establishing continuous and energy-efficient humidity control strategies is crucial for improving indoor environmental quality. However, most existing adsorption dehumidification systems are unable to operate continuously due to the necessary regeneration process of adsorbent materials. Therefore, this study proposes a solar-driven dual-channel ventilated Trombe wall system based on MOFs, which achieves 24-h continuous indoor dehumidification via alternating adsorption-desorption operations. MOFs/CF is employed as the adsorption bed. Two identical beds operate in an alternating manner, utilizing cold and hot water circulation to provide the driving force for the adsorption and regeneration processes, respectively. Cold water is supplied at 25 °C and hot water is provided by solar energy. The comprehensive performance of the system is evaluated through modular experimental testing and numerical simulations. Experimental results demonstrate that the MOFs/CF adsorption bed achieves a maximum adsorption capacity of 0.91 g/g. Elevating the desorption temperature enhances the regeneration performance; at a desorption temperature of 80 °C, the peak relative humidity difference between the inlet and outlet air reaches 12.8%. Furthermore, simulation results reveal that with a single adsorption bed featuring an effective area of 0.4 m 2 and an MOF loading of 0.96 kg, the system achieves its maximum dehumidification capacity under the 80 °C condition. In this scenario, the system completes approximately five cycles within 24 h and yields a total daily moisture removal of 4.54 kg. In addition, the system demonstrates superior overall performance under the 70 °C condition, where the thermal driving efficiency peaks at 87.22%.
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Mengxin Liu,Chen Lin,Haowei Li,Jiejun Pan,Yuhui Liu,Xin Su,Xinan Shi,Heng Zhang,Bingsuo Zou,Daocheng Pan
SnO 2 nanoparticles (NPs) have emerged as a promising electron transport material (ETL) for high-performance and stable quantum dot light-emitting diodes (QLEDs). However, their inherently high electron mobility and conductivity create a charge transport imbalance in QLEDs, ultimately limiting device performance. To address this challenge, a novel p-type doping strategy is proposed to continuously decrease the electron mobility and conductivity of SnO 2 NPs. As a result, the electron mobility and conductivity of Zn-doped SnO 2 NPs can be adjusted in a wide range owing to the substitution of Zn 2+ ions for Sn 4+ ions as the electron acceptors. The charge transportation balance in QLEDs can be realized by suppressing the electron transportation ability of Zn-doped SnO 2 nanocrystals and inserting a wide-band-gap CaMoO 4 interface layer. Finally, QLED devices achieve an average external quantum efficiency (EQE) of 24.4% and a highest EQE of 27.1%, which are comparable to the state-of-the-art ZnO-based QLEDs. More importantly, the positive aging effect can be eliminated by using Zn-doped SnO 2 NPs as ETL, which provides a promising ETL material for the fabrication of high-efficiency and stable QLEDs without positive aging effect.
研究领域:
材料科学
·
纳米技术
·
光电子学
·
半导体器件
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DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 33
·期 4
·2209921
·
IF 19.924
Xiaopeng Yue,Xing Zhao,Bingbing Fan,Yingying Yang,Luyao Yan,Shujie Qu,Hao Huang,Qiang Zhang,Huilin Yan,Peng Cui,Jun Ji,Junfeng Ma,Meicheng Li
Mixed 2D/3D perovskite solar cells (PSCs) show promising performances in efficiency and long-term stability. The functional groups terminated on a large organic molecule used to construct 2D capping layer play a key role in the chemical interaction mechanism and thus influence the device performance. In this study, 4-(trifluoromethyl) benzamidine hydrochloride (TFPhFACl) is adopted to construct 2D capping layer atop 3D perovskite. It is found that there are two mechanisms synergistically contributing to the increase of efficiency: 1) The TFPhFA + cations form a dipole layer promoting the interfacial charge transport. 2) The suppressed nonradiative recombination of perovskite through the coordination of TFPhFA + cations with Pb–I octahedron, as well as the recrystallization of 3D perovskite induced by Cl - ions. As a result, the PSC delivers an efficiency of 24.0% with improved open-circuit voltage ( V OC ) of 1.16 V, short-circuit current density ( J SC ) of 25.42 mA cm -2 , and fill factor of 81.26%. The device shows no decrease in efficiency after 1500 h stored in the air indicating the good stability. The utilization of TFPhFACl not only provides a facile way to optimize the interfacial problems, but also gives a new perspective for rational design of large spacer molecule for constructing efficient 2D/3D PSCs.
研究领域:
材料科学
·
光伏技术
·
有机无机杂化材料
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DOI
高影响因子
Desalination and Water Treatment
·
2015
·
IF 1.173
Ping Yu,Qilong Sun,Jianfeng Li,Jianming Pan,Zhenjiang Tan,Yongsheng Yan
Poly(styrene-divinyl benzene) (St-DVB) magnetic porous microspheres were prepared by sulfonation for the adsorption of 2,4-dichlorophenol(2,4-DCP) and 2,4,6-trichlorophenol (2,4,6-TCP) from aqueous solution. The as-prepared microspheres were characterized by FT-IR, XRD, SEM, TGA, VSM, and N2 adsorption–desorption techniques, showing that the as-prepared microspheres were porous and had good magnetism (Ms = 40 emu g−1). The adsorption performance of St-DVB magnetic porous microspheres were investigated by batch mode adsorption experiments with respect to pH, temperature, initial concentration, and contact time. The St-DVB magnetic porous microspheres were sensitive to pH. The equilibrium data was better fitted to the Langmuir isotherm model than the Freundlich model. The kinetics experimental data was well fitted to the pseudo-second-order model. The thermodynamic parameters were calculated by the Gibbs free energy function, revealing that the adsorption process was spontaneous and endothermic. Furthermore, the St-DVB magnetic porous microspheres had good recycling performance.
研究领域:
环境科学
·
材料科学
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DOI
高影响因子
JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 4
·e70130
·
IF 2.8
Qing Han,Min Zhou,Xuejun Kang,Guozhe Deng,Feng Guo,Li Geng
Vitamin D plays a crucial role in skeletal metabolism and is implicated in various diseases. Several studies have indicated that human vitamin D status can be evaluated through urine hydroxyvitamin D levels, in addition to plasma hydroxyvitamin D concentrations. In this study, we developed a novel method for the detection of trace amounts of 25-hydroxyvitamin D 3 [25(OH)D 3 ] and 24,25-dihydroxyvitamin D 3 [24,25(OH) 2 D 3 ] in urine. This method is based on high-performance liquid chromatography coupled with atmospheric pressure chemical ion source-tandem mass spectrometry, integrated with packed-fibers solid-phase extraction. The composite polystyrene/graphene oxide (PS/GO) nanofibers were synthesized as the sorbent for concentrating 25(OH)D 3 and 24,25(OH) 2 D 3 , achieving a twentyfold increase in sensitivity when analyzing human urine samples. Fourier-transform infrared spectroscopy, X-ray diffraction, and energy-dispersive X-ray spectroscopy mapping analysis were employed to characterize GO, PS, and PS/GO. The results indicated that the composite nanofibers were successfully synthesized. In addition, we investigated the relationship between the extraction performance of the fibers and the electrospinning process at varying flow rates of spinning solution through morphological studies and Brunauer-Emmett-Teller surface area analysis. During the extraction process, purification, concentration, and desorption were accomplished within a single step. The established method demonstrated excellent sensitivity and efficiency. Under optimal conditions, limits of detection (signal-to-noise ratio = 3) were found to be 0.33 ng/mL for 25(OH)D 3 and 0.19 ng/mL for 24,25(OH) 2 D 3 ; furthermore, linearity was deemed acceptable across urine samples. Recovery rates ranged from 89.5% to 109.7% for 25(OH)D 3 and from 90.3% to 103.1% for 24,25(OH) 2 D 3 , respectively.
研究领域:
分析化学
·
医学检验
·
营养学
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产品关联
DOI
PubMed
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Dan He,Yicheng Li,Cong Lyu,Lan Song,Wei Feng,Shengyu Zhang
Sulfate radical-based advanced oxidation processes (SR-AOPs) have received increasing attention as viable technology for recalcitrant organics removal from polluted waters. As for heterogeneous catalyst, it is crucial to reveal the effect of morphology on its catalytic activity and mechanism, providing guidelines for rational design of morphology-dependent catalysts. Hence, in this study, we selected manganese oxyhydroxide (MnOOH) as the peroxymonosulfate (PMS) activator and synthesized different morphological MnOOH with the same crystal structure. The catalytic activity of MnOOH follows: nanowires > multi-branches > nanorods . Different morphological MnOOH had different physical and chemical characterization such as specific surface area, Lewis sites, ζ-potential and redox potential , which played positive roles in catalytic activity of MnOOH as PMS activator. Unexpectedly, it was found that ζ-potential was more crucial than specific surface area, redox potential and Lewis sites. Notably, nanowires exhibited higher positive zeta potential, which was favor of promoting interfacial reactivity between HSO 5 − and surface of MnOOH. Furthermore, •OH, SO 4 • − , O 2 • − and 1 O 2 , were involved in the MnOOH/PMS system. Moreover, the cycle of Mn (III)/Mn (II) accelerated MnOH + formation. This study provided a new understanding of manganese-catalyzed peroxymonosulfate activation and elucidated the relationships between morphology of catalyst and its catalytic activity.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Hongwei Pang,Lijie Liu,Ziang Bai,Ruixing Chen,Hao Tang,Yawen Cai,Shujun Yu,Baowei Hu,Xiangke Wang
Surface sulfidation has become a desirable technique to enhance the physicochemical properties of nanoscale zero-valent iron (NZVI) and improve the decontamination efficiency for organic pollutants. However, the macroscopic elimination performance and microscopic reaction mechanism of sulfide NZVI (SNZVI) towards organic matters remains uncovered. Herein, we fabricated SNZVI via one-step dithionite-method and applied it for heterogeneous Fenton-like elimination of 2,4-Dichlorophenol (DCP). The sulfidation technique greatly improved the stability, specific area, oxidized resistance, hydrophobicity, and functionality. The efficiency of degradation (86.3%) was approximately 7 times higher than adsorption (12.6%) under N 2 condition, indicating the promising potential of SNZVI in environmental governance. Moreover, Fenton-like reaction and reactive oxygen species (ROS) were confirmed to dominate the degradation process, and the generated radicals had priority to degrade DCP rather than corroded SNZVI. Furthermore, the result of gas chromatography-mass spectrometry (GC–MS) confirmed that DCP was mainly decomposed into harmless alkanes and inorganic matters, which significantly reduced the perniciousness of DCP. Overall, this research bridged the knowledge gap between organic pollutant removal and the advanced oxidation reaction of NZVI-based materials after surface sulfidation.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2021
·Vol. 29
·期 7
·10183-10197
·
IF 4.223
Basit Farwa,Liu Jiaxin,An Jianyu,Chen Min,He Can,Zhu Xiaobo,Li Zhan,Hu Jin,Guan Yajing
Brassinosteroids (BRs) are growth-promoting hormones that exhibit high biological activities across various plant species. BRs shield plants against various abiotic stresses. In the present study, the effect of BRs against aluminum (Al) toxicity was investigated through seed priming with 24-epibrassinolide (0.01 μM) in two different rice cultivars. BRs application was found effective in confronting plants from Al toxicity (400 μM). The rice seeds primed with BRs showed enhancement in seed germination energy, germination percentage, root and shoot length, as well as fresh and dry weight under Al-absence and Al-stressed conditions as compared to water-priming. Especially under Al stress, BRs priming promoted the growth of rice seedlings more obviously. Al toxicity significantly increased the Al contents in seedling root and shoot, as well as the MDA concentration, H 2 O 2 production, and the activities of antioxidative enzymes including ascorbate peroxidase, catalase, and peroxidase. Meanwhile, the photosynthetic pigments of seedling reduced under Al stress. When compared to sensitive cultivar (CY-927), these modifications were more obvious in the tolerant variety (YLY-689). Surprisingly, BRs were able to alleviate the Al injury by lowering MDA and H 2 O 2 level and increasing antioxidant activities and photosynthetic pigments under Al stress. The results on antioxidant activities were further validated by gene expression study of SOD-Cu-Zn , SOD-Fe 2 , CATa , CATb , APX02 , and APX08 . It suggested that BRs were responsible for the mitigation of Al stress in rice seedlings by inducing antioxidant activities with an effective response to other seed growth parameters and reduced Al uptake under induced metal stress.
研究领域:
植物生理学
·
农学
·
植物环境胁迫
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DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）