CHEMOSPHERE
·
2022
·
IF 8.943
Yu Du,Qizhen Zhang,Manli Yu,Bin Jiao,Fuliang Chen,Mingming Yin
Excessive copper (Cu) concentrations pose significant health risks to both plants and humans. In this study, sodium alginate (SA)-gelatin (GEL)-polyvinyl pyrrolidone (PVP)- embedded dinotefuran (DIN) microspheres were prepared using spray-drying technology . The loading content and encapsulation efficiency of optimal microspheres determined by physical modifications were 19.77% and 99.32%, respectively. In addition, the microspheres showed variable stimuli-responsive controlled release capacities in different temperatures and types of soil, as well as showed better control efficiency of larvae of Protaetia brevitarsis at pesticide application in the early stage, with the potential ability to control pest outbreaks at high temperatures. In addition, blank microspheres improved the growth and physiological activity of cucumber seedlings, reduced copper content in leaves, increased soil nutrient content, and prevented soil acidification . Further, the use of blank microspheres increased the relative abundance of soil beneficial functional bacteria communities, which mediate heavy metal (HM) immobilization/tolerance and promote plant growth. Redundancy analysis (RDA) and Spearman correlation analysis showed that these beneficial functional bacteria were mainly positively correlated with soil EC, A-N, and N–N. In summary, this study showed that the technique of combining physically modified carrier materials with pesticides has the potential to reduce Cu contamination in the surrounding agricultural soil during pesticide application, thereby reducing Cu uptake by crops.
研究领域:
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Pengfei Shan,Yingwen Lu,Weilin Lu,Xiangping Yin,Haiwei Liu,Daai Li,Xiaoyue Lian,Weiping Wang,Zhongyu Li,Zhihui Li
The low utilization efficiency of pesticides exerts an adverse impact on the environment and human health. Polymer-related controlled-release nanosized pesticide systems provide a promising and efficient way to overcome the problem. In this work, a biodegradable and light-responsive amphiphilic polymer was synthesized via 1,1,3,3-tetramethylguanidine-promoted polyesterification under mild conditions (low temperature, no vacuum, and no inert gas protection). We used this polymer to fabricate a light-triggered controlled-release nanosized pesticide system. The herbicide, 2,4-dichlorophenoxyacetic acid (2,4-D), was selected as a model drug to show its potential as a controlled-release pesticide system. It was found that the 2,4-D-loaded polymeric nanoparticles were stable without the treatment of UV, while the release rate of 2,4-D from the nanoparticles gradually increased after treatment with UV light. Pot trial showed that the 2,4-D-loaded polymer nanoparticles showed a good herbicidal effect. Finally, toxicity studies suggested that the polymer can reduce toxicity to nontarget organisms.
研究领域:
环境科学
·
材料科学
·
农业科学
✓ 已验证
DOI
高影响因子
APPLIED CLAY SCIENCE
·
2024
·
IF 5.3
Hongcai Wang,Xiuqiong Chen,Cuiyu Gong,Yanan Bu,Ting Wu,Huiqiong Yan,Qiang Lin
Enclosing the pesticide in a carrier and releasing it based on environmental stimuli is proved to be a viable strategy for addressing pesticide losses and mitigating environmental contamination. Here, an interpenetrating network (IPN) composite hydrogels (OMt/Alg/PNIPAm) with light and temperature responses was prepared by the incorporation of clay material, organo-montmorillonite (OMt), via the free-radical polymerization of N-isopropyl acrylamide (PNIPAm) and its crosslinking as well as ionic crosslinking reaction of sodium alginate (SA) with FeCl 3 . The structure of OMt/Alg/PNIPAm was characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), thermos gravimetric analysis (TGA) and rheometer. The hydrophobic pesticide λ-cyhalothrin (LC) was encapsulated in OMt and subsequently incorporated into the IPN structure of the composite hydrogels, ensuring the desirable mechanical properties, encapsulation efficiency and sustained release performances of the composite hydrogels. In addition, with the rising of OMt content, the IPN composite hydrogels exhibited a decrease in their swelling capacity, transparency, and temperature sensitivity. The OMt/Alg/PNIPAm with 9.0% OMt content displayed the highest loading rate for pesticides at 82.06% and the lowest release rate of pesticides at 3.90%. Furthermore, the IPN composite hydrogels possessed the ability to regulate the amount of pesticide release based on the variations in temperature and ambient light conditions. The resultant IPN composite hydrogels took advantage of the temperature responsiveness of PNIPAm, the light sensitivity of Fe 3+ -alginate hydrogel, and the adsorption capability of OMt, possessing great potentials in enhancing the utilization efficiency of hydrophobic pesticides through the development of effective and eco-friendly pesticide formulations.
研究领域:
材料科学
·
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2020
·
IF 6.551
Yubin Xiang,Xue Lu,Jiangtao Yue,Yan Zhang,Xiaoyue Sun,Guilong Zhang,Dongqing Cai,Zhengyan Wu
In this work, biochar based hydrogel microspheres were fabricated successfully to develop pH and ion strength dual-stimuli responsively controlled-release system for hydrophilic pesticide. Herein, gentian violet (GV) was selected as model hydrophilic pesticide. Taking advantage of the cross-linking reaction, GV was incorporated into biochar and the 3D network-structured hydrogel, guaranteeing a satisfying encapsulation efficiency and sustained release of pesticide. The leaching behavior of pesticide in simulated soil column at different pHs and ion strength was in accordance with the corresponding release performance, and bulk of pesticide was retarded on the surface. In addition, the pesticide carrier had nearly no toxic effect on the cell proliferation and zebrafish embryo, displaying a good biosafety . The work provides a promising strategy with a low-cost and simple procedure that could regulate pesticide release behavior, decrease leaching loss, and improve the utilization efficiency of pesticide.
研究领域:
环境科学
·
农业科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
·
2021
·
IF 5.097
Wenyan Meng,Yiyun Gao,Zhenfen Tian,Weijie Xu,Jiagao Cheng,Shengke Li,Aihua Zou
A magnetic metal–organic framework nanocomposite as a collectable pesticide delivery vehicle was developed through the incorporation of UiO-66 with polydopamine-coated Fe3O4 (Fe3O4@PDA@UiO-66). The obtained Fe3O4@PDA@UiO-66 nanocomposite was verified by X-ray diffraction, Fourier transform infrared spectroscopy, transmission electron microscopy, and zeta potential test. The magnetic collectability of Fe3O4@PDA@UiO-66 was demonstrated through a magnetic hysteresis loop study (∼2 emu/g) and magnetic collection experiment (up to a 96% collection rate). Imidacloprid (IMI) was employed as a model pesticide to be loaded into the Fe3O4@PDA@UiO-66 nanocomposite, with 15.87% drug loading. IMI was found to exhibit sustained-release behavior after being loaded into the delivery vehicle, and magnetic Fe3O4@PDA@UiO-66 can be readily collected after IMI release, which is beneficial to constrain the hazardous effects of the vehicles and the residual pesticide on the ecosystem. The insecticidal activity of IMI@Fe3O4@PDA@UiO-66 toward Aphis craccivora Koch was found to be superior to that of free IMI, and the efficacy was comparable to that of the commercial 70% IMI water dispersible granule, indicating its potential as a magnetic collectable green carrier for pesticides in agriculture.
研究领域:
材料科学
·
农业科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Long Chen,Liang Li,Hongyan Chen,Bo Cui,Fei Gao,Jinming Gao,Xiang Zhao,Yan Wang,Haixin Cui,Zhanghua Zeng
Traditional pesticides often exhibit high non-target toxicity, poor stability, short persistence, and susceptibility to wash-off by rain. Pesticide microencapsulation represents a significant advancement in formulation strategies, addressing safety and sustainability concerns associated with conventional pesticides. This study explores the utilization of biodegradable chitin nanocrystals (ChNCs), prepared via acid hydrolysis, for the development of pesticide microcapsules. Specifically, ChNCs were employed to emulsify molten pesticides, followed by interfacial polymerization to fabricate pesticide-loaded microcapsules. Using molten emulsification and Pickering emulsion templates offer a simple and solvent-free approach for microcapsule preparation, eliminating the need for conventional surfactants. The microcapsules displayed a size distribution ranging from hundreds of nanometers to several micrometers, which could be tuned by adjusting the ChNCs content. These microcapsules demonstrated remarkable properties, including a high pesticide loading capacity (reaching 78.7% for lambda-cyhalothrin), excellent storage stability, and enzyme-responsive release behavior. Furthermore, the abundant positive charges enhanced the interaction between the microcapsules and leaf surfaces, leading to improved pesticide retention. Microencapsulation reduces acute insecticidal activity of pesticides due to the slow-release effect; however, field experiments provide compelling evidence that microcapsule formulations significantly prolong pesticide efficacy compared to conventional formulations. Additionally, microencapsulation significantly improved the safety of pesticides, with the LC 50 increasing from 0.0116 mg/L to 3.75 mg/L. Overall, this study introduces a promising method for pesticide microencapsulation using ChNCs Pickering emulsion, highlighting its potential advantages and providing valuable insights for the development of environmentally friendly and novel pesticide formulations.
研究领域:
材料科学
·
农业科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER JOURNAL
·
2019
·Vol. 51
·期 11
·1211-1222
·
IF 2.639
Liu Guanghua,Lin Guanquan,Tan Mingyi,Zhou Hongjun,Chen Huayao,Xu Hua,Zhou Xinhua
To improve the utilization of pesticides and reduce the amount of pesticides used, sustained-release nanoparticles were prepared. Soybean protein isolate (SPI) and carboxymethyl cellulose (CMC) were modified to obtain hydrazine-modified SPI and aldehyde-modified CMC, respectively, and SPI-CMC was prepared by the condensation of hydrazine and aldehyde groups, forming a hydrazone bond. SPI-CMC was heated and loaded with avermectin (AVM) to obtain AVM/SPI-CMC. The encapsulation efficiency property, anti-ultraviolet property, sustained-release characteristics, pH responsiveness, and toxicological profiles were studied. The particles in the formulation were spherical-like, with sizes ranging between 150 and 250 nm. The encapsulation efficiency increased with the addition of SPI, which reached 44.49% when SPI was added in a mass ratio of m SPI-HYD : m CMC-ALD = 2:1. The percentage of remaining AVM in AVM/SPI-CMC was 31.47% higher than that in the AVM solution after UV irradiation for 43 h. Moreover, the nanoparticles were responsive to pH. SPI-CMC had no significant effect on the insecticidal toxicity of AVM. Environmental friendly SPI-CMC could protect and release pesticides continuously, which could improve the efficiency of pesticides.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Liupeng Yang,Amir E. Kaziem,Yigang Lin,Chao Li,Yuting Tan,Suqing Huang,Dongmei Cheng,HanHong Xu,Zhixiang Zhang
In this study, a pesticide controlled release system with dual response characteristics of pH and enzyme triggering was developed. Indoxacarb (IDC) was loaded into hollow mesoporous silica (HMS) nanoparticles , carboxylated β-cyclodextrin (β-CD) acted as a capping molecule to couple with the amino-functionalized HMS, and their well-defined morphological structures were confirmed by scanning electron microscopy and transmission electron microscopy . The results showed that the prepared IDC loaded HMS-CD had high loading efficiency (26.42%, w/w) and showed excellent dual response properties to pH and the α-amylase enzyme. IDC loaded HMS-CD nanoparticles showed better insecticidal activity against Spodoptera frugiperda than applying the same dose of IDC emulsifiable concentrate, and the toxicity of IDC loaded HMS-CD to zebrafish was reduced by more than 5-fold, indicating that insecticide delivery systems based on β-CD-anchored HMS nanoparticles could potentially be applied for sustainable control of pests and reduce harm to non-target organisms and the environment.
研究领域:
农业科学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Agricultural Science & Technology
·
2022
·
IF 0
Guang Li,Siyun Zhang,Lei Yang,Weiwei Xu,Haonan Qu,Demei Tian,Jia Li,Haibing Li,Xiaobing Zhang
Controlled release of pesticides is highly desirable for improving efficacy and reducing side effects in agricultural applications. Herein, in this work, based on the optical property and host–guest chemistry of quantum dot and pillararene, we develop a new type of fluorescent, current-responsive, pH stimuli-responsive pillar[6]arene@quantum dots mixed-matrix membranes (PQDs-MMMs) for pesticide delivery, which achieves highly selective detection and controlled release for methyl viologen (MV2+). In the experiments of fluorescence spectrum and I–V current, PQDs-MMMs could realize the visual fluorescence detection and current selection for MV2+. Moreover, the controlled release experiments indicated that the PQDs-MMMs could effectively immobilize and stimuli-release the MV2+ depending on the pH regulation, which achieved the pH-stimuli-responsive release of MV2+. Additionally, the herbicidal activity of MV2+-loaded PQDs-MMMs (MV2+@PQDs-MMMs) was tested, and results showed the weed control effects were identified to free MV2+ under pH control. This work provides the great potential of PQDs-MMMs used in agricultural membranes with environmentally friendly and stimuli-responsive release.
研究领域:
农业科学
·
材料科学
·
化学
✓ 已验证
DOI
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xiaoxu Ma,Mingxin Liu,Yanzhen Chen,Qiliang Huang,Chong Cao
Dinotefuran (DIN) contaminates groundwater and is toxic to bees, so designing a novel pesticide loading system for dinotefuran is of great significance. In this paper, dinotefuran was loaded into TpBDMe COF with a mesoporous hollow structure, and the TpBDMe COF loaded with dinotefuran exhibited initial burst and subsequent sustained release behavior. The results showed that the product effectively suppresses wheat aphid development, with virtually no infestation occurring for 7–14 days, whereas other commercially available formulation had lost their usefulness. Our TpBDMe COF carrier effectively immobilizes dinotefuran, reducing pesticide leaching in soil by 70 % and enhancing the application efficiency of neonicotinoid insecticides. The LD 50 of this product for acute exposure of honey bees doubled the LD50 of the original furosemide at 24 h and was equally effective at 48 h, reducing the toxicity to bees and promoting ecological safety. The results of this work show that this nanocarrier system is highly stable, loadable, insecticidal active, and environmentally friendly, showing great potential in the development of new nanocarriers for use.
研究领域:
环境科学
·
农业科学
·
毒理学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Ziwei Wu,Yiyang Chen,Yuan Peng,Haozhe Xue,Yongxin Yao,Shimeng Yang,Chengyuan Pan,Dayu Zhang,Yongjian Xie
The use of intelligent pesticides that respond to environmental stimuli is a promising strategy for achieving sustainable pest control while mitigating pesticide-related environmental pollution. This study reports the design of a pH and laccase dual-stimulus-responsive pesticide-slow-release composite (IMI@UiO-66@SL). The composite utilises an imidacloprid (IMI)-encapsulated metal–organic framework (MOF; UiO-66) as a nano-carrier and sodium lignosulfonate (SL) as a capping agent. Results show that IMI@UiO-66@SL exhibits excellent IMI release properties in acidic and laccase-rich environments, which closely mimic the physiological and behavioural conditions of termites. Furthermore, compared to the original IMI formulation, IMI@UiO-66@SL exhibits enhanced and prolonged insecticidal activity. Briefly, this study reports a promising approach for the sustainable management of termite colonies.
研究领域:
农业科学
·
材料科学
·
昆虫学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xingyu Zhang,Tianyue Wu,Lingqi Wang,Siyang Liu,Yue Gao,Pengjiu Zhang,Chengyi He,Yuxia Gao,Chenhui Zhang,Li Zhang,Kefei Zhao,Fengpei Du
The prevalence of apple Valsa canker (AVC) poses a significant threat to the vitality of apple trees, jeopardizing the progress of the apple industry. Current strategies have proven inadequate in managing the disease effectively due to challenges such as extended duration and frequent relapses, especially low-adhesion vertical target. Herein, we introduce a pesticide-fertilizer synergistic alginate-based hydrogel (P&F-Gel) to enhance long-term pesticide retention and offer nutrient supplementation without labor-intensive practices. By sequentially spraying a suspension concentrate with sodium alginate (SA) as thickening agent, followed by a cross-linked fertilizer (CCF) dominated by Ca 2+ and other nutrient, rapid in-situ gelation is achieved on the low-adhesion vertical xylem surface. P&F-Gel demonstrates strong in-situ adhesion, long-term retention, and flush resistance, with temperature-triggered pesticide release making it suitable for field applications in humid and warm climates where AVC often breaks out. Additionally, P&F-Gel exhibits superior antifungal efficacy in vitro and in orchard, due to its capacity to isolate oxygen and inhibit fungal proliferation. Overall, our P&F-Gel represents the first use of a hydrogel strategy in trunk treatment, which provided a possibility to control AVC without intensive labor and protect apple trees from recurrence for over 6 months, paving the way for modern sustainable agriculture.
研究领域:
植物病理学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）