Halloysite nanotubes-based composite material with acid/alkali dual pH response and foliar adhesion for smart delivery of hydrophobic pesticide

Teng, Guopeng; Chen, Chao-Wen; Jing, Nana; Chen, Chuang; Duan, Yajun; Zhang, Lihong; Wu, Zhengyan; Zhang, Jia

doi:10.1016/j.cej.2022.139052

Cited by 43 publications

(12 citation statements)

References 41 publications

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“…Results indicated that the adhesion rate of AVM in (CH+SL)20@PE on maize leaves was much higher than that of AVM technical (Figure S15, Supporting Information). As the leaf surface has a layer of wax composed of high‐grade fatty compounds, SL with surface activity and abundant oxygen‐containing groups on the outermost layer of the microcapsule could interact well with the leaf, [ 42 ] which enable the microcapsules have satisfying wetting and adhesion ability.…”

Section: Resultsmentioning

confidence: 99%

Biomass‐Based, Interface Tunable, and Dual‐Responsive Pickering Emulsions for Smart Release of Pesticides

et al. 2023

Adv Funct Materials

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The extremely low utilization efficiency of pesticides has driven people to develop low-cost, sustainable, and smart delivery systems. Pickering emulsion (PE) derived from biomass is an attractive candidate. However, the stability of PE is insufficient, and pesticide release from PE can be hardly tuned. Herein, a facile in situ PE modification strategy to construct a stable and high-performance pesticide delivery system from biomass resources is reported. In this process, PE stabilized by alkali lignin nanoparticles is initially prepared, and subsequently, opposite-charged chitosan (CH), and sodium lignosulfonate (SL) are alternatively deposited onto the PE interface through layer-by-layer assembly to form a microcapsule system (CH+SL)n@ PE. The resulting biomass-based microcapsules show improved stability, high encapsulation efficiency, and super UV protection to avermectin (AVM), a hydrophobic and photo-sensitive pesticide. Furthermore, the shell thickness of microcapsules can be finely tuned by controlling the deposited CH+SL layers, which enable (CH+SL)n@PE to have adjustable release behaviors. (CH+SL)20@PE prolongs the half-life of AVM under UV irradiation by 5.0fold. Moreover, (CH+SL)n@PE exhibits pH and laccase dual responsiveness, which is beneficial to the targeted release of AVM in vivo. Therefore, the current PE modification strategy can provide an eco-friendly, low-cost, and smart system for precise delivery of pesticides.

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Section: Resultsmentioning

confidence: 99%

Biomass‐Based, Interface Tunable, and Dual‐Responsive Pickering Emulsions for Smart Release of Pesticides

et al. 2023

Adv Funct Materials

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“…We evaluated the CBZ release behavior from CBZ@AP5/MSe⊃MO by learning from a previous reference . Briefly, CBZ@AP5/MSe⊃MO of 1 mg/mL was dissolved in a phosphate buffer solution of different pH (3, 4.5, 7.4).…”

Section: Methodsmentioning

confidence: 99%

“…We evaluated the CBZ release behavior from CBZ@AP5/MSe⊃MO by learning from a previous reference. 45 Briefly, CBZ@AP5/MSe⊃MO of 1 mg/mL was dissolved in a phosphate buffer solution of different pH (3, 4.5, 7.4). Then, the samples (1 mL) were centrifugal at a regular time and taken out of the suspension, and the same volume of corresponding buffer was added to the release medium at the same time.…”

Section: Methodsmentioning

confidence: 99%

Green Nanopesticide: pH-Responsive Eco-Friendly Pillar[5]arene-Modified Selenium Nanoparticles for Smart Delivery of Carbendazim to Suppress Sclerotinia Diseases

Huang

Yang

Liang

et al. 2023

ACS Appl. Mater. Interfaces

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Controlled-release delivery systems have been widely used to improve the efficacy and bioavailability of pesticides and minimize environmental risks. Herein, a fungicide carbendazim (CBZ)-loaded, a kind of nanovalve including trimethylammoniumpillar[5]arene (AP5), and methyl orange (MO)-functionalized mesoporous selenium (MSe) nanopesticides (CBZ@AP5/MSe⊃MO) were prepared. The nanovalve endowed CBZ@AP5/MSe⊃MO with a pH-responsive property, so the CBZ@AP5/MSe⊃MO can respond to the microenvironment of the pathogen Sclerotinia sclerotiorum (S. sclerotiorum). First, MO was shed due to protonation, and AP5-functionalized MSe gradually dissolved in an acid environment. Finally, CBZ was released rapidly. It is reported that AP5 and MO as the host and guest functionalized mesoporous selenium (MSe) have never been applied to agriculture. In vitro release experiments showed that the cumulative release rate of CBZ at pH 4.5 was 1.74 times higher than that in a neutral environment. In addition, we found that the contact angle of the CBZ@AP5/MSe⊃MO in maize and rape leaves was effectively decreased, which could retain more in the leaves after washout. It can also decrease the dry biomass and the reducing sugar of S.sclerotiorum. The CBZ@AP5/MSe⊃MO holds a good safety profile for plants, animal cells, and the environment owing to the targeted release properties. These results suggest that CBZ@ AP5/MSe⊃MO is an environmentally friendly and effective drug-loaded system against S. sclerotiorum. It provides a new strategy for the design and development of nanopesticides and the control of S. sclerotiorum.

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“…Acid-treated HNTs were used as carrier for chlorpyrifos (CPF), a hydrophobic pesticide, followed by the coating of the tubes with alginate gels, used to slow down the release of the CPF from the tubes. To increase the loading of the active ingredient, a three-dimensional structure involving the acid-treated HNTs was also created via a step-by-step modification of the HNTs’ surface with Ca 2+ and EDTA 2− , exploiting their strong coordination interactions ( Figure 12 ) [ 86 ].…”

Section: Halloysite Nanotubes Based Antimicrobial Materialsmentioning

confidence: 99%

Antimicrobial Nanomaterials Based on Halloysite Clay Mineral: Research Advances and Outlook

Massaro¹,

Ciani²,

Cinà³

et al. 2022

Antibiotics

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Bacterial infections represent one of the major causes of mortality worldwide. Therefore, over the years, several nanomaterials with antibacterial properties have been developed. In this context, clay minerals, because of their intrinsic properties, have been efficiently used as antimicrobial agents since ancient times. Halloysite nanotubes are one of the emerging nanomaterials that have found application as antimicrobial agents in several fields. In this review, we summarize some examples of the use of pristine and modified halloysite nanotubes as antimicrobial agents, scaffolds for wound healing and orthopedic implants, fillers for active food packaging, and carriers for pesticides in food pest control.

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Halloysite nanotubes-based composite material with acid/alkali dual pH response and foliar adhesion for smart delivery of hydrophobic pesticide

Cited by 43 publications

References 41 publications

Biomass‐Based, Interface Tunable, and Dual‐Responsive Pickering Emulsions for Smart Release of Pesticides

Biomass‐Based, Interface Tunable, and Dual‐Responsive Pickering Emulsions for Smart Release of Pesticides

Green Nanopesticide: pH-Responsive Eco-Friendly Pillar[5]arene-Modified Selenium Nanoparticles for Smart Delivery of Carbendazim to Suppress Sclerotinia Diseases

Antimicrobial Nanomaterials Based on Halloysite Clay Mineral: Research Advances and Outlook

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