INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Ming Yang,Han Gao,Hongtao Zou,Di Sun
The preparation of biobased coated controlled-release fertilizers by bio-derived materials was crucial for green and sustainable development in agricultural production. Yet, considerable endeavors were still urgently needed to be devoted to improving the unwanted flaws of biobased materials, i.e. high hydrophilicity and abundant micro-pores. Herein, single- and dual-modified coated fertilizers were successfully developed based on all-biobased coating materials. The characteristics of the unmodified and modified coated fertilizers were also compared. The results indicated that the outermost layer modification by lauric acid copper improved the hydrophobicity and swelling capacity of the all-biobased membrane, prolonging nitrogen release period by 53 days. The water contact angle of dual modified fertilizer by siloxane and nano lauric acid cooper attained 105° and its swelling volume was relatively larger, which contributed to a longer nitrogen release longevity (112 days). Therefore, the dual modification showed more efficiency in improving the controlled-release ability and simultaneously simplified the preparation technology. Besides, compared to the single modification, this strategy decreased the nanomaterial dose and then lowered the potential environmental risk of long-term use of nanomaterial. The novel modification technique and dual-modified all biomembrane material could provide guidance for the future development of renewable and environmentally friendly coated fertilizers.
研究领域:
农业科学
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材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Sustainable Systems
·
2025
·
IF 6.1
Mingchuan Yang,Chunyan Tang,Meiqi Han,Zhaohui Tong,Yuechao Yang,Liwen Gao,Boning Su,DengLun Chen,Junyin Li,Long Zhang,Shugang Zhang
In order to solve the problem of difficult precise nutrient release caused by loose pores in bio-based coated controlled-release fertilizers, this study explores the integration of Metal–Organic Framework (MOF) materials into bio-based coatings. Specifically, MOF-303 is synthesized and used to modify biocomposite coatings mainly derived from natural bio-polyol castor oil, which improved the controlled release performance through unique self-assembling and pore-forming properties of MOF-303. Characterization confirmed the successful incorporation of MOF-303 into the bio-based coatings, resulting in a smoother surface and fewer pores. Specifically, MOF-303 is synthesized and used to modify biocomposite coatings mainly derived from castor oil, which enhanced the controlled-release performance by adjusting the pore structure of the coating. The modified CRFs demonstrated improved controlled-release performance, with nitrogen (N) release periods extending from 63 days in unmodified coatings to 77 and 105 days with 1% and 1.5% MOF-303, respectively. Application trials on potted spinach revealed significant benefits, with yield increases of 37.51% and 30.83% under U and M1 treatment, respectively. This study highlights the potential of MOF-303-modified bio-based CRFs (MBCFs) to offer sustained and precise nutrient supply, thereby improving agricultural productivity and efficiency.
研究领域:
农业科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zekun Wang,Guiwei Wang,Ziyao Li,Xiangjie Zhao,Junyin Li,Denglun Chen,Guodong Xia,Yuanyuan Yao,Shugang Zhang,Xiaoqi Wang,Bin Gao,Yuechao Yang
Developing a bio-based membrane shell with excellent damage resistance and self-repairing capabilities is an effective strategy for enhancing the quality and efficacy of membrane-coated controlled-release fertilizers (CRFs). We present a simple and practical method to incorporate dynamic disulfide and hydrogen bonds into polyurethane to form a dynamic covalent network, which greatly improves the mechanical properties, damage resistance, and self-repair performance of polyurethane membrane shells. The novel membrane shell was coated on bio-based polyurethane CRF (BPCRF) to produce the self-repairing bio-polyurethane-coated CRF (SBPCRF). The SBPCRF product exhibited excellent controlled-release performance, and the nitrogen release life span increased by >50 % (by more than 20 days) than BPCRF. SBPCRF also exhibited remarkable damage resistance and exceptional self-repairing performance with a repair efficiency of 92.2 % at 25 °C. Additionally, nitrogen release life span of the damaged SBPCRF can extended by 30 days than the damaged BPCRF. Furthermore, the membrane shell exhibited exceptional tensile elongation (1229 %) and tensile strength (5.271 MPa). The application of SBPCRF on maize also exhibited high nitrogen utilization (>60 %). Density-functional theory calculations indicated that the reorganization of dynamic disulfide bonds spontaneously occurred after breaking and then induced the responsible repair process of the material. This research provides insights into the development of coating materials that maintain the integrity of the membrane shell and ensure stable nutrient release throughout the crop life span and offers a novel strategy for the advancement of sustainable agriculture.
研究领域:
农业科学
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材料科学
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植物营养学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2016
·
IF 3.12
Zhihai Yang,Yuanliang Shi,Yuhuan Sun,Lingli Wang,Feng Guan
Methylene urea (MU) is a kind of slow-release fertilizer. The application of MU can increase nitrogen use efficiency, reduce environmental impacts and the labor intensity of farmers. This study investigated a rapid, simple and practical way to research MU biodegradation. The activated sludge after sterilization was used as the carrier for microbial growth and the soil with the MU-degrading microorganisms was added as inoculum. By adding glucose as the carbon source and MU as the nitrogen source, after 10–15 days of aerobic training at room temperature , the activated sludge with large amounts of MU-degrading microorganisms was used as research material. The hydrolysis of the urea released from dimethylenetriurea (DMTU) degradation was inhibited by N-(n-Butyl)thiophosphoric triamide (NBPT). The results showed that the nitrogen release process of DMTU is as follows: 1) the dissolved DMTU was firstly absorbed by microorganisms and then decomposed into urea, ammonium and formaldehyde by intracellular enzyme; 2) the urea and the ammonium nitrogen from DMTU degradation were released into the environment; 3) the urea released is further hydrolyzed into ammonium and carbon dioxide by urease in the extracellular environment. Because the dissolved DMTU can be rapidly mineralized by microorganisms and the degradation rate of DMTU is a constant, the degradation rate of DMTU is independent of the concentration of reactants and determined by other factors.
研究领域:
环境科学
·
微生物学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2018
·
IF 2.955
Yufeng Li,Cong Jia,Xiao Zhang,Yanghui Jiang,Min Zhang,Panfang Lu,Hongkun Chen
Nearly 1 billion tons of bagasse are discarded annually in the production process. In this work, a novel controlled release fertilizer was successfully produced by coating urea particles with bio-based epoxy (EPCU). The bio-based epoxy coating was synthesized from the liquefied bagasse (LB) and bisphenol-A diglycidyl ether (BDE) with the different mole ratios of LB to BDE. The chemical structure and microscopic morphology of EPCU were examined by FTIR, 1 HNMR, SEM. The nutrient release behaviors and mechanism of EPCUs were also discussed in detail. Results showed that EPCU3 improved the thermal stability by 60.3 °C (T 10% ), increased the nutrient release longevity by 12 times, and raised the water contact angle of surface by 12%, and then significantly slowed the nitrogen release rate of the EPCU. This work indicated that the environment-friendly EPCU with superior controlled release properties could be especially useful in horticultural and agricultural applications.
研究领域:
农业科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2014
·Vol. 10
·期 18
·3750-3760
·
IF 7.514
Jiangsheng Xu,Fang Zeng,Hao Wu,Caiping Hu,Changmin Yu,Shuizhu Wu
The therapeutic applications of exogenous nitric oxide are usually limited by its short half-life and its vulnerability to many biological substances, thus straightforward and precise spatiotemporal control of NO delivery may be critical to its therapeutic effects. Herein, the mitochondria-targeted and photoresponsive NO-releasing nanosystem is demonstrated as a new approach for cancer treatment. The nanosystem is fabricated by covalently incorporating a NO photo-donor and a mitochondria targeting ligand onto carbon-dots; accordingly, multi-functionalities (mitochondria-targeting, light-enhanced efficient NO-releasing, and cell imaging) are achieved. The in vitro NO release profiles for the nanosystem show that the duration of NO release from the present C-dot-based nanosystem containing immobilized SNO can be extended up to 8 hours or more. Upon cellular internalization, the nanosystem can target mitochondria and release NO. The action of the nanosystem on three cancer cell lines is evaluated; it is found that the targeted NO-releasing system can cause high cytotoxicity towards the cancer cells by specifically damaging their mitochondria. Additionally, light irradiation can amplify the cell apoptosis by enhancing NO release. These observations demonstrate that incorporating mitochondria-targeting ligand onto a NO-releasing system can enhance its pro-apoptosis action, thereby providing new insights for exploiting NO in cancer therapy.
研究领域:
药理学
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癌症研究
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纳米医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Colloid and Interface Science Communications
·
2025
·
IF 4.7
Jun Sun,Sulei Zhang,Yichen Wang,Denghai Sheng,Shengjie Liu,Yu Rao,Aiqing Li,Yuchun Pan,John L. Brash,Xiaoli Liu,Hong Chen
Thrombus formation often leads to the failure of intravascular implants. Natural endothelium provides multifaceted antithrombotic functions through nitric oxide/ prostacyclin secretion to inhibit platelet activation, glycosaminoglycan mediated anticoagulation, and tissue-type plasminogen activator driven fibrinolysis. Therefore, surfaces mimicking these multiple endothelial functions are expected to have enhanced antithrombotic properties. In this study, polyvinyl chloride surface was rendered porous through solvent/nonsolvent-induced phase separation and loaded with a metal-organic framework, CuBTTri to catalyze nitric oxide release from a precursor. Furthermore, using layer-by-layer self-assembly, multiple bilayers of a poly(lysine- co -oligo(ethylene glycol) methyl ether methacrylate) copolymer (fibrinolysis-promoting), and sodium heparin (endothelial cell growth-promoting), were deposited on the un-etched side of the polyvinyl chloride. This modified surface was shown to be capable of releasing nitric oxide, destroying nascent thrombus, inhibiting smooth muscle cell growth, and promoting endothelial cell adhesion. This study represents a novel approach to developing multifunctional blood-contacting surfaces that mimic multiple properties of the endothelium.
研究领域:
生物医学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Healthcare Materials
·
2022
·Vol. 11
·期 12
·2200199
·
IF 11.092
Maohua Chen,Jingjing Zhou,Pan Ran,Fangmei Lei,Jie Meng,Junwu Wei,Xiaohong Li
It is of paramount importance to develop novel approaches for combating bacterial resistance and the integration of different antibacterial mechanisms is essential to achieve synergistic bactericidal efficiency while reducing the associated side effects. Herein, amphiphilic antimicrobial copolymers derived from poly- l -lysine (PLL), black phosphorus quantum dots (BPQDs) as near-infrared (NIR) sensitizer, and S-nitrosocysteamine (SNO) as nitric oxide (NO) donor, are assembled into PELI@BPQD-SNO nanoparticles through electrostatic interactions. Amphiphilic copolymers with isopentanyl grafts on PLL at a ratio of 50% achieve an optimal balance between antibacterial activity and hemolysis rate. Photothermal effect of BPQDs leads to NIR-responsive release of NO and the combination with amphiphilic copolymers mutually enhances long-term inhibition of bacterial growth. In an S. aureus -infected subcutaneous abscess model, the bactericidal rate of PELI@BPQD-SNO/NIR treatment reaches nearly 99.6%, which is significantly higher than those without NO release (38%) or amphiphilic copolymers (24%) or NIR irradiation (17%). PELI@BPQD-SNO/NIR treatment shows full recovery of infected wounds, efficient retardation of inflammatory cells, and reconstruction of blood vessels similar to those of healthy skin. Therefore, the electrostatic assembly demonstrates a promising strategy to deliver charged therapeutic agents and the photoactivated release of NO and amphiphilic copolymers achieves synergistic antibacterial efficacy without using any antibiotics.
研究领域:
生物材料学
·
药剂学
·
感染与免疫
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2022
·Vol. 103
·期 7
·3592-3601
·
IF 4.125
Wen Meng,Xu Zhang,Yang Zhang,Xianglu Zhang,Wending Zhu,Handa Huang,Xiaozhao Han,Yahua Liu,Chao Xu
BACKGROUND The use of slow release fertilizers (SRFs) is an effective approach for reducing agriculture cost, environmental and ecological issues simultaneously. The present study provides a series of poly(vinyl alcohol) (PVA)/sodium alginate (SA) polymer membranes as eco-friendly and biodegradable coatings for SRFs. Moreover, polymer-coated urea (PCU) granules were fabricated through coating the urea granules with the resulting membranes. Our first interest was to fabricate three membranes (PS1, PS2, PS3) of different PVA/SA weight ratios (9:1, 8:2, 7:3) using glutaraldehyde as a crosslinking agent, and crosslink the PS3 membrane with a CaCl 2 solution further to obtain the PC3 membrane. The chemical properties and morphologies of the membranes were characterized. Second, the nitrogen release behavior of the PCU granules was measured and calculated, respectively. RESULTS Crosslinking with glutaraldehyde made the PS1, PS2, PS3 membranes uniform and compact, whereas crosslinking with a CaCl 2 solution formed an ‘egg box’ structure inside the PC3 membrane. PS3 membrane with the minimum PVA/SA weight ratio had the highest hydrophily (water uptake: 106.25%, water contact angle: 55.1 o ), whereas PC3 membrane had the lowest hydrophily (water uptake: 21.57%, water contact angle: 67.3 o ). The biodegradation ratios of the membranes were in the range 44–60% in 90 days, indicating that they had excellent biodegradability. The measured fractional release on the day 30 of the PCU granules ranged from 89.33% to 97.07%. The calculated nitrogen release behavior agreed well with the measured values. CONCLUSION The resulting eco-friendly and biodegradable PVA/SA membranes are alternative coatings for SRFs. © 2022 Society of Chemical Industry.
研究领域:
农业科学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Ming Yang,Jiatong Zhang,Zhentao Sun,Di Sun
The development of efficient, biobased polyurethane controlled-release fertilizers from sustainable and eco-friendly biomaterials has received increased research attention, owing to concerns regarding global food security and environmental sustainability. Most previous studies focused on replacing petroleum-based polyols with biopolyols; however, the other main raw material, isocyanate, remained a petrochemical product. Herein, all-natural, plant-derived polyurethane-coated urea was successfully developed using castor oil and biobased isocyanate, and the performance of the coating shell before and after modification was compared. The results showed that the incorporation of a low dose of lauric acid copper into the coating material simultaneously enhanced the hydrophobicity and elasticity of the all-biobased polyurethane membrane, which prolonged the nitrogen release longevity from 3 to 112 days. In addition, the modified membrane showed excellent biodegradability in a soil environment. The novel all-biobased polyurethane coating material and modification technique provide insight for developing sustainable and eco-friendly controlled-release fertilizers.
研究领域:
材料科学
·
环境科学
·
农业科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Biobased Materials and Bioenergy
·
2016
·Vol. 10
·期 2
·113-118
·
IF 0.635
Lu Panfang,Jia Cong,Zhang Yanfei,Li Yufeng,Zhang Min,Mao Zhiquan
A new type of controlled release fertilizers was prepared with the bio-based polyurethane from liquefied starch as a biodegradable coating materials. We studied the nitrogen release characteristics of the polymer-coated urea (PCU) applied in both water and soil. The morphology and chemical
structure of PCU coating materials was investigated by SEM, AFM and FTIR. The biodegradability of PCU coating after buried in soil was studied. The results showed that PCU coating more effectively reduced nitrogen release rate than starch coating. The PCU coating materials can biodegrade in
soil. This indicated that the low cost PCU products from the liquefied starch are expected to be used in agricultural and horticultural applications.
研究领域:
农业科学
·
材料科学
✓ 已验证
DOI
高影响因子
Chemical Engineering Journal Advances
·
2021
·
IF 0
Pengfei Shan,Haiwei Liu,Daai Li,Ruolin Zhou,Shenbo Huang,Peihan Cai,Zonglei Wang,Yingwen Lu,Zhongyu Li,Zhihui Li
The volatilization, leaching and decomposition of chemical fertilizer lead to the low utilization rate of fertilizer, which poses a great challenge to the environment and human health. Slow-release fertilizers, which can retard the release of fertilizer, provide an effective way to solve these problems. Progress has been made in preparation of coated slow-release fertilizers, however, there are still some challenges, including high cost, complex production process and uncontrollable nutrient release. In this work, we developed a facile method to make a kind of slow-release fertilizer by thiol-ene click chemistry via triethylamine gas as a promoter at room temperature. The crosslinking polymer coating was directly formed on the surface of fertilizer from inexpensive and commercially available monomers. The results show that the nitrogen release longevity for this coated slow-release fertilizer could reach more than 200 days. The nitrogen release rate can be modulated by the crosslinking density of the polymer coating and was also influenced by the temperature and pH.
研究领域:
农业科学
·
材料化学
✓ 已验证
DOI
危险品化学品经营许可证（带存储）