pH/redox dual responsive from natural polymer-based nanoparticles for on-demand delivery of pesticides

Zhao, Ming; Li, Peiquan; Zhou, Hongjun; Li, Hao; Chen, Huayao; Zhou, Xinhua

doi:10.1016/j.cej.2022.134861

Cited by 90 publications

(52 citation statements)

References 61 publications

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“…The remaining rate of Gly in Gly solution reached lower than 40% at 5 and 25 °C and reached nearly 60% at the higher temperature of 45 °C. Zhao et al constructed a carrier formed by covalently linking natural macromolecular zein and chitosan to load abamectin, and about 84% of the avermectin was irradiated under ultraviolet light for 290 min residue . Liang et al used mesoporous silica nanoparticles combined with functionalized starch as a carrier and abamectin as a model drug, and the photodegradation loss rate of abamectin within 24 h reached 8.5%.…”

Section: Resultsmentioning

confidence: 99%

“…Zhao et al constructed a carrier formed by covalently linking natural macromolecular zein and chitosan to load abamectin, and about 84% of the avermectin was irradiated under ultraviolet light for 290 min residue. 57 Liang et al used mesoporous silica nanoparticles combined with functionalized starch as a carrier and abamectin as a model drug, and the photodegradation loss rate of abamectin within 24 h reached 8.5%. The modified attapulgite/alginate hydrogel system exhibits better photostability compared to the carrier they studied.…”

Section: Resultsmentioning

confidence: 99%

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Loading Glyphosate in Attapulgite and Sodium Alginate Hydrogels to Construct pH-Responsive Controlled Release Microsphere for Enhanced Soil Sustained Release

Zha

Hou

et al. 2022

ACS Agric. Sci. Technol.

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Herein, we constructed the microsphere SAH-Gly by loading glyphosate (Gly) with dopamine-modified attapulgite (DA-Gly) and capsuling in sodium alginate hydrogels. The Gly releasing rate and the hydrogel swelling rate were manifestly increased to the highest of 60 and 26% within 70 and 24 h in alkaline solution (pH = 8.5), respectively, while only 20% Gly releasing rate and less than 15% hydrogel swelling rate were observed in both acidic (pH = 5.5) and neutral solutions (pH = 7.0). The abundant carboxyl groups in SAH-Gly provided the swelling characters through H + ionization. Both DA-Gly and SAH-Gly enhanced the stability of Gly to ultraviolet rays and temperature variability. The sustained release of Gly from SAH-Gly resulted in its partial absorption in soils. DA-Gly and SAH-Gly released maximum Gly molecular concentrations after 28 and 32 h, respectively, and then degraded completely in 200 h in soil. First-order kinetics showed that the half-life (DT 50 ) of the Gly residue in soil was 65.89 h, while the DT 50 values of DA-Gly and SAH-Gly were 31.18 and 66.27 h, respectively, with the following order: DA-Gly < Gly < SAH-Gly. In addition, leaching experiments depicted that SAH-Gly displayed a weaker elution behavior and longer elution time in the upper soil ring of the column. The sustained release behavior of Gly from SAH-Gly in soil could decelerate the degradation, adsorption, and leaching characters of Gly molecular, helping reduce the loss of active Gly and enhancing its sustainable agricultural practice in response to environmental factors.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Loading Glyphosate in Attapulgite and Sodium Alginate Hydrogels to Construct pH-Responsive Controlled Release Microsphere for Enhanced Soil Sustained Release

Zha

Hou

et al. 2022

ACS Agric. Sci. Technol.

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“…Similarly, alterations in the pH of the test media can influence the surface potential and thus influence the stability and transport of nanoparticles [ 86 ]. Variations in pH values are due to different soil types, the nature of the plant, or as a cause of pests and pathogens; similarly, pH in the digestive system of insects varies [ 87 ]. Therefore, both ionic strength and pH have been found to be significant factors that destabilize the water-soluble polymers and polysaccharides that are often used in the construction of NPs [ 88 , 89 ].…”

Section: Possible Instability Phenomena In Nanopesticidesmentioning

confidence: 99%

“…In 2022, Zhao et al, to overcome this limiting feature of pesticides, developed polymeric nanocarriers composed of zein and chitosan oligosaccharides covalently connected, which were loaded by a model pesticide avermectin (hydrophobic and light instable). Obtain a decrease in the encapsulation efficiency of the pesticide by increasing the rate of chitosan grafting, which generates an increase in the hydrophilicity of the structure and subsequent agglomeration of the carrier or avermectin, thus destabilizing the NP system [ 87 ].…”

Section: Possible Instability Phenomena In Nanopesticidesmentioning

confidence: 99%

Stability Phenomena Associated with the Development of Polymer-Based Nanopesticides

Prado-Audelo

Bernal-Chávez

Gutiérrez-Ruíz

et al. 2022

Oxidative Medicine and Cellular Longevity

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Pesticides have been used in agricultural activity for decades because they represent the first defense against pathogens, harmful insects, and parasitic weeds. Conventional pesticides are commonly employed at high dosages to prevent their loss and degradation, guaranteeing effectiveness; however, this results in a large waste of resources and significant environmental pollution. In this regard, the search for biocompatible, biodegradable, and responsive materials has received greater attention in the last years to achieve the obtention of an efficient and green pesticide formulation. Nanotechnology is a useful tool to design and develop “nanopesticides” that limit pest degradation and ensure a controlled release using a lower concentration than the conventional methods. Besides different types of nanoparticles, polymeric nanocarriers represent the most promising group of nanomaterials to improve the agrochemicals’ sustainability due to polymers’ intrinsic properties. Polymeric nanoparticles are biocompatible, biodegradable, and suitable for chemical surface modification, making them attractive for pesticide delivery. This review summarizes the current use of synthetic and natural polymer-based nanopesticides, discussing their characteristics and their most common design shapes. Furthermore, we approached the instability phenomena in polymer-based nanopesticides and strategies to avoid it. Finally, we discussed the environmental risks and future challenges of polymeric nanopesticides to present a comprehensive analysis of this type of nanosystem.

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“…One elegant strategy to solve the low utilization rate of pesticides would be to construct controlled release formulations. , The active ingredients are combined with carriers by physical or chemical methods, and their controllable release can be achieved through intelligent responses to the surrounding microenvironment. − At present, the carriers of pesticides usually include natural polymers, ,, inorganic materials, − covalent–organic frameworks, , and metal–organic frameworks (MOFs). − In particular, MOFs are widely used in the field of precision chemistry and are currently being integrated into the development of agriculture, making it more precise, efficient, and safe. MOFs are porous hybrid materials constructed by inorganic metal ions and organic ligands .…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of the Dual Pesticide-Loaded Metal–Organic Framework Hybrid for pH-Responsive Release

Wang

Yang

et al. 2022

ACS Agric. Sci. Technol.

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Controlled release formulations, used for the long-term preservation of pesticides, make agricultural development more precise, efficient, and safe. However, facile synthesis and high utilization of these formulations remain challenging. In this work, a polydopamine and metal−organic framework (MOF) hybrid was fabricated by a facile synthesis strategy for the controlled delivery of insecticide thiacloprid (THIA) and herbicide 2,4-D. The pesticides exhibited environment-responsive release behaviors. After 24 h, the cumulative release of THIA and 2,4-D reached 52.78 and 58.63% under alkaline conditions. The antiultraviolet photodegradation ability of THIA and 2,4-D increased nearly 4 times and 2 times, respectively. Significant insecticidal and herbicidal properties were observed

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pH/redox dual responsive from natural polymer-based nanoparticles for on-demand delivery of pesticides

Cited by 90 publications

References 61 publications

Loading Glyphosate in Attapulgite and Sodium Alginate Hydrogels to Construct pH-Responsive Controlled Release Microsphere for Enhanced Soil Sustained Release

Loading Glyphosate in Attapulgite and Sodium Alginate Hydrogels to Construct pH-Responsive Controlled Release Microsphere for Enhanced Soil Sustained Release

Stability Phenomena Associated with the Development of Polymer-Based Nanopesticides

Facile Synthesis of the Dual Pesticide-Loaded Metal–Organic Framework Hybrid for pH-Responsive Release

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