COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2022
·
IF 5.518
Shaochun Su,Li Hao,Huayao Chen,Xinhua Zhou,Hongjun Zhou
Sustainable food consumption is intertwined with sustainable agriculture development, which focuses on the production and protection of agricultural crops in a safe and effective fashion. Herein, amphiphilic functionalized chitosan oligosaccharide nanoparticles (CSD) were formed by a Schiff base reaction grafted with salicylaldehyde and D-(+)-galactose ( D -Gal). Avermectin (AVM) was used as a model pesticide and self-assembled onto CSD to obtain AVM@CSD nanoparticles with an encapsulation efficiency of 74.94%. AVM@CSD nanocarrier exhibited excellent anti-UV property to retain more AVM, due to their Schiff base structure and salicylaldehyde for UV shielding. Compared with bare AVM and commercial AVM emulsifiable concentrates, AVM@CSD preserved high insecticidal activity after UV irradiation . Additionally, CSD carrier promoted cucumber seed germination and seedling growth. These data suggested the potential utilization of the amphiphilic chitosan oligosaccharide as carriers for pesticides to improve their delivery and release properties and opens a novel avenue towards the application of water-dispersible and biological CSD in the field of pest management and plant growth.
研究领域:
农业科学
·
生物材料学
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2024
·Vol. 14
·期 1
·1-14
·
IF 3.8
Liu Chao,Jia Xinlei,Wang Yonghui,Gu Yuxin,Liu Yanjuan,Wei Lixin,Xu Lanjuan
This paper aims to address the issue of environmental pollution resulting from marine oil spills by evaluating the oil adsorption performance of commonly used fence materials. Conventional oil adsorption materials exhibit limited rates and capacities for oil adsorption. Existing methods have proven insufficient in meeting the requirements for efficient and rapid oil–water separation. A new oil-absorbing barrier was developed by utilizing high oil adsorption resin as the primary material and hydroxypropyl methyl cellulose (HPMC) as the binder, leveraging the exceptional oil adsorption and hydrophobic properties of P(BMA-SMA-St)/MIL-101(Fe) resin. The oil-absorbing fence was characterized using scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The oil adsorption rates of carbon tetrachloride, toluene, diesel and gasoline by the oil adsorption fence with 25 g/L resin content were 101.26 g/m 2 , 68.12 g/m 2 , 35.19 g/m 2 , and 46.69 g/m 2 , respectively. After 120 h of UV irradiation, the coating’s oil absorption capacity remained nearly unchanged, and it demonstrated outstanding mechanical, chemical, and wear resistance. As a result, the oil adsorption fence possesses the capability to rapidly absorb oil from the water’s surface during the process of containing oil pollution, leading to positive social and economic impacts.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Wei Ma,Lin Li,Ying Liu,Yuyu Sun,Ick Soo Kim,Xuehong Ren
Weak UV light stability of N-halamine-based materials leads to severe antibacterial capacity fading, and further limits their practical applications. Herein, atom transfer radical polymerization (ATRP) method was firstly employed to fabricate ZnO-poly[3-(4-vinylbenzyl)-5,5-dimethylhydantoin] (ZnO-PVBDMH) nanoparticles through a 2-bromoisobutyryl bromide group linked onto the surface of ZnO nanoparticle (ZnO-BIBB). Morphology and structures of ZnO-PVBDMH nanoparticles in relationship to their chemical composition were investigated. Prominent UV light stability results confirmed that ZnO nanoparticles significantly reduce the chlorine loss of N-halamine upon UV irradiation, and about 79% of the active chlorine could be recharged after 72 h of irradiation. The ZnO-PVBDMH-Cl NPs with 1.62 wt% oxidative chlorine could sterilize 99.96% Gram-positive Staphylococcus aureus (3.38 log) and 100% Gram-negative Escherichia coli O157:H7 (7.39 log) within 30 min. After 24 h of UV irradiation, the ZnO-PVBDMH-Cl NPs could still inactivate 97.17% E. coli O157:H7 within 60 min. The nanoparticles also show excellent in vitro cell viability owing to the unique hybrid structures. The excellent photocatalytic capability of ZnO-PVBDMH NPs was investigated by determining the decomposition of the methylene blue (MB) solution. As an easy and efficient way of modifying nanoparticles, such technique can further extend the application of N-halamine monomers in other polar substrates for antibacterial functionalization.
研究领域:
材料科学
·
生物学
·
医学
✓ 已验证
产品关联
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2023
·Vol. 649
·期 20
·e202300091
·
IF 1.4
Zhongzhi Wang,Rui Shi,Pengcheng Hao,Xin Qiao,Senchuan Song
In this work, a Eu(TTA) 3 BIP complex with a novel structure was synthesized and characterized. The Eu(TTA) 3 BIP complex has a wide excitation band and can be excited by light in the ultraviolet and blue regions. The characteristic red light of Eu(III) is emitted when the complex is excited. The use of the 2-(Pyrimidin-2-yl)-1H-benzo[d]imidazole (BIP) ligand improved the UV resistance of the complex. Moreover, the blue light reducing film prepared by the Eu(TTA) 3 BIP complex can effectively weaken blue light irradiation. In addition, the Eu(TTA) 3 BIP complex exhibits fluorescence thermal quenching properties. This provides the possibility for temperature sensing.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2024
·
IF 8
Liling Fei,Lin Yang,Peng Li,Jiangang Ma
Mn 2+ doped CsPbCl 3 nanocrystals (Mn 2+ :CsPbCl 3 NCs) show immense promise in lighting and display technologies owing to their outstanding optical characteristics. Nonetheless, high defect density, inefficient Mn 2+ doping, and poor structural robustness pose considerable challenges in the synthesis of Mn 2+ :CsPbCl 3 NCs with high photoluminescence quantum yield (PLQY) and long-term stability. This study introduces an eco-friendly room-temperature post-treatment method utilizing MgCl 2 /oleylamine solution, boosting the total PLQY of the NCs from 65% to 98%, including a 30% increase for Mn 2+ emission. Additionally, the post-treatment significantly improves the NCs’ resilience against UV light, retaining 80% of their initial PL intensity after 120 hours of UV exposure. Comprehensive analyses including density functional theory simulation and temperature-dependent PL spectra suggested that the PLQY enhancement is due to the improved Mn 2+ doping efficiency and the effective passivation of native vacancy defects. The stability of the NCs is enhanced by replacing Pb 2+ with Mg 2+ and Mn 2+ , mitigating lattice distortions within the [PbCl 6 ] 4− octahedral framework. The color rendering index of white light-emitting diodes fabricated with the post-treated Mn 2+ :CsPbCl 3 NCs achieves an exceptional value of 98. This work offers novel insights into the fabrication of high-PLQY Mn 2+ :CsPbCl 3 NCs, advancing the practical deployment of perovskite nanomaterials in various industries.
研究领域:
材料科学
·
光学工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Jiangtao Dong,Hexin Li,Guoquan Wang,Haoming Li,Yanli Zhao,Xinan Li,Li Xu,Feng Zhou,Runqiang Liu
Pesticides play an important role in controlling plant diseases and insect pests to increase food production. Pyrethrin (Py), as a plant-derived insecticide, can effectively control wheat aphids owing to its fast knockdown, low concentration, and broad-spectrum insecticidal activity. However, Py is sensitive to UV irradiation and decomposes easily under sunlight, which leads to the loss of insecticidal activity. In this paper, we prepared one kind of metal organic framework nanopesticides based on zeolite imidazole-8 framework (ZIF-8) loaded with Py (Py@ZIF-8) via one-pot method for wheat aphid control. The prepared Py@ZIF-8 nanopesticides appeared acidic/basic pH and PO 4 3- stimuli-responsive properties for the controlled release of packaged Py by the disassembly of MOF skeleton and enhanced leaf wettability. The control efficacies of Py@ZIF-8 nanopesticides against wheat aphids reached ca. 86.67 ± 4.56 % under normal conditions, ca. 82.56 ± 3.88 % after water washing, and ca. 78.92 ± 4.34 % under exposure to UV irradiation, which appeared remarkably improvement compared with technical Py under UV irradiation and rain erosion condition, respectively. Even through the nanopesticides inevitably enter into soil or water, they appear good biosafety on wheat and cucumber seedlings by seed dressing, as well as zebrafish ( D. rerio ). Importantly, the eco-friendly nanocarriers will be ultimately degraded against bioaccumulation in crops based on the stimuli-responsive mechanisms. These results indicated that the prepared nanopesticides have an efficient wheat aphid control owing to the intelligent control release performance, as well as good UV and washing resistance, and good biosafety on non-target species, which have potential applications in agriculture against wheat aphids.
研究领域:
农业科学
·
植物保护
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 2
·1-10
·
IF 2.6
Liu Chengchao,Sui Kun,Liu Jiuhong,Wang Zhongwei,Chen Long,Yu Qing
Scutellaria baicalensis (SBC) richly possess active ingredients to satisfy the conditions for functional applications. Herein, the active components of SBC are extracted and introduced into linear low-density polyethylene (LLDPE) to perform as functional additives. The thermal oxygen stability, processing stability, ultraviolet (UV) stability, flame retardancy and mechanical properties are comprehensively investigated. Compared with pure LLDPE, the oxidation induction time (OIT) of LLDPE incorporating SBC extractive (SBE) increased ca. 24 times. The combination of SBE and antioxidant 626 produce more superior antioxidant capacity (OIT of 99.7 min is achieved), revealing an outstanding synergistic effect. After UV irradiation, the carbonyl index variation of the LLDPE adding SBE is less than 50% of that of pure LLDPE. The TGA test showed that SBE was involved in the free radical elimination process. Moreover, the horizontal burning time increases by 37 s with the introduction of both SBE and antioxidant 626. Those results adequately manifest that SBE is a natural, high-performance multi-function additive for LLDPE. This study validly expands the multi-functional application of natural substances into polyolefins, which is a great benefit to the green development of polymer-based composites.
研究领域:
材料科学
·
化学工程
·
植物学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 31
·15348-15358
·
IF 9.931
Ziqiu Ren,Jinde Wu,Na Wang,Xin Li
Current perovskite solar cells (PSCs) often use high-purity single-crystal metal oxides prepared by complex growth processes as electron transport layers (ETLs). In particular, TiO2, as an ETL, can deteriorate the stability of PSCs under illumination. Here, we report a passivation strategy using Er-doped TiO2 synthesized with a one-step hydrothermal method as an ETL. Notably, the oxygen-induced defects in TiO2 have decreased to an acceptable level for PSCs due to the introduction of Er3+ ions. More interestingly, we find that a phase junction can be formed in the mixed crystalline rutile/anatase phase of TiO2, and this TiO2 phase junction can achieve efficient charge separation and accelerate internal electron transfer of the ETL. Taking advantage of these facts, we obtain TiO2-based PSCs through a two-step sequential deposition method in ambient air, whose best efficiency increases by 45.8%. Moreover, the Er-doped device exhibits remarkable ultraviolet resistance ability, whose efficiency is maintained over 90% even after 500 hour ultraviolet irradiation. We believe that this demonstrated strategy provides an effective way for preparing efficient and ultraviolet resistant PSCs in air.
研究领域:
材料科学
·
能源技术
·
光伏器件
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Qingyi Xie,Junyi Zhou,Haiquan Sun,Jiamei Fu,Minghui Cui,Xiaolin Wang,Fenglong Li,Jin Zhu,Jing Chen
Bio-based polyurethane materials with good barrier properties are gaining increasing attention for their potential in alleviating energy shortages. In this work, natural lignin first underwent a two-step esterification modification using succinic acid (SA) and 6-mercapto-1-hexanol (6-MCH) modified castor oil. The resulting modified lignin exhibited both flexibility and high reactivity. It was further reacted with hexamethylene diisocyanate (HDI) to synthesize a high-bio-based-content polyurethane material (>70 %) with excellent UV resistance and barrier properties. The incorporation of modified castor oil significantly enhanced the mechanical properties of the lignin-based polyurethane and improved its water vapor barrier performance due to its intrinsic hydrophobicity. When the molar ratio of hydroxyl groups in the modified castor oil to carboxyl groups in the modified lignin was 5:1, the resulting polyurethane (5:1-PU) DEMONSTRATED a tensile strength of 10.0 ± 0.1 MPa, toughness of 468.3 ± 3.3 MJ·m −3 , a water contact angle of 98.3°, and a water vapor transmission rate (WVTR) of 2.10 ± 0.39 g/m 2 ·24h. This approach, which grafts lignin with castor oil, enables the high-value utilization of lignin and offers a sustainable pathway for developing bio-based barrier materials as alternatives to petroleum-based films.
研究领域:
高分子材料
·
生物医学工程
·
可持续材料
·
功能材料
·
绿色化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Chemistry
·
2021
·
IF 9.676
Xiaoyu Deng,Zhiyuan Cao,Chengbo Li,Shurong Wang,Feng Hao
Suppressing the nonradiative recombination in the bulk and surface of perovskite film is highly desired to improve the power conversion efficiency (PCE) and stability of halide perovskite solar cells (PSCs). In this study, a benzotriazole derivative (6-chloro-1-hydroxybenzotriazole, Cl-HOBT) is applied to improve the crystallinity and reduce the trap density of methylammonium lead iodide (MAPbI 3 ) perovskite film. Meanwhile, incorporation of Cl-HOBT elongates the photoluminescence carrier lifetime and charge-recombination lifetime, implying the trap-assisted nonradiative recombination is greatly suppressed. Besides, the improved energy level alignment and enhanced built-in potential are conducive to the charge carrier separation and transfer process with Cl-HOBT. Consequently, a PCE of 20.27% and an open-circuit voltage ( V oc ) of 1.09 V are achieved for the inverted MAPbI 3 PSCs, along with an 85% maintaining of the initial PCE under stored at relative humidity of 20% for 500 h. Furthermore, the existence of Cl-HOBT could inhibit the formation of Pb 0 defect under prolonged UV illumination to retard the degradation of perovskite film. It is believed that this study paves a novel path for the realization of high-efficiency PSCs with UV-stability.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Zhengang Gao,Yuxin Zhang,Yutong Yang,Jiayi Han,Jiaji Cheng,Yapeng Wang,Shaoxiang Li
Epoxy resin (EP) coating is widely used in the construction field due to its excellent performance. Microcapsules are prepared by self-assembly of TiO 2 on the surface of azodicarbonamide (ADC) to enhance the flame-retardancy and smoke suppression of epoxy resin, and to address the ultraviolet failure of azodicarbonamide in practical applications. By adding 5 wt% of azodicarbonamide microcapsules to the epoxy resin, the limiting oxygen index (LOI) of the composite EP was increased from 20 % to 31 % compared with the pure EP, reaching the level of flame-retardant material. Through cone calorimeter test (CCT), the total heat release (THR), peak heat release rate (pHRR) and total smoke production (TSP) of composite EP were reduced by 62.09 %, 54.88 % and 46.98 %, respectively, and the epoxy resin was equipped with a very good charring effect, which improved the flame retardancy. In addition, SEM images showed that the ADC was successfully coated by TiO 2 , which avoided the ADC from being exposed to UV leading to failure and enhanced its effectiveness in practical applications.
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Yanan Liu,Canyun Zhang,Fengchao Wang,Jin Chen,Jinfang Kong,Lan Li,Yu Sun,Yanhui Xin
Via the ligand-assisted reaction, highly luminescent CsPbBr 3 perovskite nanocrystal (PNC) films were synthesized by a simple centrifugal casting process based on the supersaturated recrystallization method. The structure, the optical properties, the morphology, the stability and the potential application of the PNC films were investigated in detail. The results show that under the joint use of OA, DDAB and APTES, the obtained PNC films with 1.5 M DDAB show the strong PL emission with highest quantum yield of 77.5 %, the pure CsPbBr 3 structure, the smooth surface and the enhanced stability under UV irradiation. Additionally, the white LED device based on the PNC films obtained here and a commercial red phosphor layer shows excellent optical and color properties and working stability, demonstrating the potential of the PNC films in this study in the field of light-emitting and display.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）