Balance the rapid release of insecticide microcapsules using double-layer shielding effect when the foliar application

Wang, Rui; Liu, Song; Sun, Fengshou; Yu, Xin; Liu, Xiao; Li, Beixing; Mu, Wei; Zhang, Da-xia; Liu, Feng

doi:10.1016/j.cej.2022.140899

Cited by 19 publications

(9 citation statements)

References 30 publications

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“…Since the peak intensity is supposed to be the same for all the NE-PCMs in the absence of the shell layer, the shell is assumed to pose a shielding effect that decreases the peak signal from n-octadecane. 40 The NE-PCM powders are obtained after centrifuging and freeze-drying the dispersions. The NE-PCM powders have a dark gray appearance, and the n-octadecane sample appears as a white solid at 25 °C (Figure 2f).…”

Section: Resultsmentioning

confidence: 99%

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Geng,

Wang,

Chen

et al. 2024

ACS Nano

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The fast-charging performance of conventional lithium-ion batteries (LIBs) is determined by the working temperature. LIBs may fail to work under harsh conditions, especially in the low-temperature range of the local environment or in the high-temperature circumstances resulting from the release of substantial Joule heating in the short term. Constructing a thermal engineering framework for thermal regulation and maintaining the battery running at an appropriate temperature range are feasible strategies for developing temperature-tolerant, fast-charging LIBs. In this work, we prepare phase change nanocapsules as a thermal regulating layer on the cell surface. The polyurea shells of the nanocapsules are decorated with polyaniline, where the molecular vibration of polyaniline is enhanced under solar irradiation, enabling light-to-heat conversion that achieves an effective temperature increment at low temperatures. Based on the large latent heat storage capability of the n-octadecane core in the nanocapsules, the thermal regulating layer is sufficient to modulate strong heat release when operating LIBs at a high current rate, which efficiently prevents strong side reactions at high temperatures or even the occurrence of thermal runaway. This work highlights the promise of optimizing the operating temperature with a thermal regulator to ensure the safety and performance stability of fast-charging LIBs.

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Section: Resultsmentioning

confidence: 99%

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Geng,

Wang,

Chen

et al. 2024

ACS Nano

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“…Pot Experiment. The pot experiment was conducted following the method described by Wang et al, 32 with slight modifications. The application concentration for the different treatments was maintained at 30 mg/L (recommended application dosage), with each cabbage receiving a 10 mL spray volume, and water was used for the control group.…”

Section: Wetting and Diffusion Behavior Studiesmentioning

confidence: 99%

Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Wu,

Yang,

Zheng

et al. 2024

ACS Appl. Mater. Interfaces

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Enhancing the performance of traditional pesticide formulations by improving their leaf surface wetting capabilities is a crucial approach for maximizing the pesticide efficiency. This study develops an emulsifiable concentrate (EC) of 4.5% β-cypermethrin containing Brucea javanica oil (BJO). The incorporation of BJO aims to improve the leaf-wetting properties of the EC formulation and enhance its insecticidal effectiveness. The droplet size and emulsion characteristics of β-CYP EC emulsion with varying concentrations of the emulsifier were evaluated, and changes after incorporating BJO were assessed to develop the optimal formulation. A comprehensive comparison was conducted among commercial 4.5% β-cypermethrin EC (β-CYP EC-1), 4.5% βcypermethrin EC with BJO (β-CYP EC-2), and 4.5% βcypermethrin EC without BJO (β-CYP EC-3). This comparison encompassed various factors including storage stability, insecticidal activity, cytotoxicity, and wetting performance on cabbage leaves. The results indicated that the ideal emulsifier concentration was 15% emulsifier 0201B. β-CYP EC-2 demonstrated superior wetting properties on cabbage leaves (the wetting performance of β-CYP EC-2 emulsion on cabbage leaves is 2.60 times that of the β-CYP EC-1 emulsion), heightened insecticidal activity against the third larvae of Plutella xylostella [diamondback moth (DBM)] [the insecticidal activity of the β-CYP EC-2 emulsion against the third larvae of DBM is 1.93 times that of the β-CYP EC-1 emulsion (12 h)], and more obvious inhibitory effects on the proliferation of DBM embryo cells than the other tested formulations. These findings have significant implications for advancing pest control strategies and promoting sustainable and effective agricultural practices.

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“…A lot of pesticide microencapsulation methods have been developed to coat core materials (i.e., pesticides) with wall materials. − The pesticide microcapsule formulations have the advantages of sustainable/controlled release of encapsulated pesticides, reduction of nontarget toxicity, and prevention of sunlight degradation; thus, the pesticide microcapsules improve the effective availability of pesticides and reduce ecological contamination and pesticide residue. The pesticide microcapsules available are mostly limited to the scale of micrometers; however, the pesticide nanocapsules with smaller sizes and larger specific surface areas can significantly increase apparent solubility in water, improve deposition and retention on the foliage, realize targeted controlled release, enhance biological availability, and reduce pesticide use. ,,,− In 2019, nanopesticides have been selected by the International Union of Pure and Applied Chemistry (IUPAC) as one of the top 10 chemical innovations that will transform the world in order to ultimately address the issues of conventional pesticide formulations, such as environmental contamination, biological accumulation, and pesticide resistance .…”

Section: Introductionmentioning

confidence: 99%

Multidimensional Stimuli-Responsive and Degradable Pesticide Nanocapsules through On Site Coordination Assembly for Enhanced Pest and Pathogen Control

Chen

Dong

Sun

et al. 2023

ACS Sustainable Chem. Eng.

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Complete pesticide nanocapsules were readily prepared through an “on site” FeIII-tannic acid (TA) coordination assembly based on oil/water microemulsions stabilized with different types of surfactants and with various pesticides dissolved in the oil phase after only one deposition cycle of Fe3+ and TA. This is a universal strategy suitable for the oil/water microemulsions stabilized with different types of surfactants and independent of the addition sequence of Fe3+ and TA. Surprisingly, the smart pesticide nanocapsules showed multidimensional on-demand controlled pesticide release (including acidic pH, alkaline pH, glutathione, ascorbic acid, H2O2, phosphate, phytic acid, and sunlight) as well as excellent resistance to rainwater erosion and ultraviolet photolysis. The examples of ascorbic acid- and phytic acid-triggered controlled release of loaded cargos (including pesticides or drugs) were reported for the first time, respectively. It is the first time that the 8 types of stimuli were integrated into one smart nanovehicle for the on-demand controlled release of encapsulated cargos (including pesticides and drugs). The multidimensional stimuli were closely relevant to the physiological and natural environments of crop plants, and the FeIII-TA wall materials were ultimately degraded in the crop plants. The nanocapsules loaded with the fungicide tebuconazole showed high fungicidal efficacy against fungi Rhizoctonia solani and Fusarium graminearum, and the nanocapsules loaded with the insecticide avermectin have high insecticidal efficacy against the pests Plutella xylostella, in comparison with conventional pesticide formulations. The facile, safe, controlled-release, and degradable pesticide nanocapsules show great application prospects in sustainable ecological agriculture.

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Balance the rapid release of insecticide microcapsules using double-layer shielding effect when the foliar application

Cited by 19 publications

References 30 publications

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Phase Change Nanocapsules Enabling Dual-Mode Thermal Management for Fast-Charging Lithium-Ion Batteries

Effect of Brucea javanica Oil on the Toxicity of β-Cypermethrin Emulsifiable Concentrate Formulation

Multidimensional Stimuli-Responsive and Degradable Pesticide Nanocapsules through On Site Coordination Assembly for Enhanced Pest and Pathogen Control

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