Graphene Oxide: A New Carrier for Slow Release of Plant Micronutrients

Kabiri, Shervin; Degryse, Fien; Tran, Diana; Silva, Rodrigo C. da; McLaughlin, Michael J.; Lošić, Dušan

doi:10.1021/acsami.7b07890

Cited by 148 publications

(117 citation statements)

References 69 publications

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“…Recent studies have shown that graphene is a promising material that could serve as a carrier for plant nutrients. It is capable of slow and controlled release of nutrient for the plants benefit, and ultimately increases the amount of crop production with low environmental impact [5].…”

Section: Introductionmentioning

confidence: 99%

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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Nutrient deficiency in food crops is seriously affecting human health, especially those in the rural areas, and nanotechnology may become the most sustainable approach to alleviating this challenge. There are several ways of fortifying the nutrients in food such as dietary diversification, use of drugs and industrial fortification. However, the affordability and sustainability of these methods have not been completely achieved. Plants absorb nutrients from fertilizers, but most conventional fertilizers have low nutrient use and uptake efficiency. Nanofertilizers are, therefore, engineered to be target oriented and not easily lost. This review surveys the effects of the addition of macro- and nanonutrients to soil, the interaction, and the absorption capability of the plants, the environmental effect and food content of the nutrients. Most reports were obtained from recent works, and they show that plants nutrients could be enriched by applying nanoparticulate nutrients, which are easily absorbed by the plant. Although there are some toxicity issues associated with the use of nanoparticles in crop, biologically synthesized nanoparticles may be preferred for agricultural purposes. This would circumvent the concerns associated with toxicity, in addition to being pollution free. This report, therefore, offers more understanding on the application of nanotechnology in biofortification of plant nutrients and the future possibilities offered by this practice. It also highlights some of the ills associated with the introduction of nanomaterials into the soil for crop’s improvement.

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Section: Introductionmentioning

confidence: 99%

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

et al. 2019

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“…As we know, most controlled release urea either needs to be prepared in water or water‐assisted. [25a,b] Tribochemistry might prepare controlled release urea in a simple and water‐free method. Owing to MPNs pH‐dependent, stability, and porous structure, TA‐M‐urea may be good in high urea content, stability, and controlled release properties.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover, MPNs films can be designed potentially in a lot of useful applications, such as patterning, antifouling in marine, and preparation of pH‐dependent capsules (≈30 nm). Inspired by slow release coated fertilizers, water‐soluble urea could encapsulate in a TA‐M coating via ball milling to demonstrate their potential use as a controlled release system . This work provides a new approach to prepare functional coatings with tunable thickness and a versatile platform for preparing green, sustainable, and industrially acceptable controlled release systems, which could shed light on the rational design and synthesis of novel MPNs with on‐demand properties.…”

Section: Introductionmentioning

confidence: 99%

On‐Site Surface Coordination Complexation via Mechanochemistry for Versatile Metal–Phenolic Networks Films

Kang

Bai

et al. 2019

Adv Materials Inter

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co-workers reported a one-step method to obtain the uniform tannic acid-Fe (TA-Fe) films (11.9 ± 1.2 nm) by changing the pH value of solution. [2] Similar to the assembly of TA-Fe films, 18 different metal ions have been selected to design and prepare MPNs multifunctional capsules. [3] Additionally, a large variety of superstructures based on the polyphenol surface functionalization have been obtained through cross-linking interaction. [4] Such studies show that a design based on coordination bond between polyphenols and various metal ions can provide a platform to prepare multifunctional materials. However, the requirements of synthesis of MPNs are a wet environment, [2] which restricts their widespread applications of monomers with no or poor solubility in solvents. [5] The development of a solvent-free method to prepare MPNs films with tunable properties is an urgent requirement. Mechanochemistry, a green and sustainable technology, [6] is now emerging as an environmentally friendly alternative to conventional solution-based approach in the fields of porous carbon materials, [7] organic reactions, [8] nanomaterials, [9] and metal-organic complexes. [10] Dai and co-workers synthesized The development of functional metal-phenolic networks (MPNs) films by a simple and green strategy on metallic plane substrates for surface modification is a big challenge. Herein, tribochemistry, as an effective and robust method to prepare MPNs films with versatile applications and controllable thickness (≈1.5 nm to 2.2 µm) by surface coordination complexation derived from tannic acid (TA) and metal oxides or ions (M) on plane substrates, is reported. The mechanism of the formation of TA-M films is investigated in detail, showing that films are constructed by two-layer structures. At the bottom of films, the chelation of TA active moieties and M is triggered by friction, facilitating the coating growth and reducing the friction coefficient.There is a downward trend in the concentration of M with the thickness of films increasing, which is attributed to the diffusion of metal ions. As a result, the dominant structure of films changes into the hydrogen bonding or π-π stacking interaction among oligomers derived from coupling of the TA active moieties. Such facile surface modification strategy can broaden in situ mechanochemical synthesis of functional layers and open a promising route for the design of patterning, antifouling, and controlled release coatings.

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“…Various materials have been developed recently to be used as carriers of pesticide and fertilizer, such as organic polymers, [ 13 ] bio‐sourced matrices, [ 14 ] and inorganic materials. [ 15,16 ] However, most of them only provide individual function and are accompanied by complex preparation processes. Furthermore, they are very susceptible to being washed away by rain, which limit their real applications.…”

Section: Introductionmentioning

confidence: 99%

Adhesive Nanocomposite for Prolonging Foliar Retention and Synergistic Weeding and Nourishing

Huang

Yan

et al. 2020

Advanced Sustainable Systems

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efficiency of fertilizer and pesticide is growing to solve these problems. [8][9][10] Controlled release pesticide-fertilizer combination (CRPFC), playing a synergistic effect of pesticide and fertilizer, is an effective approach to achieve sustainable circulative agriculture and has garnered considerable attention all over the world. [11,12] Compared with traditional controlledrelease pesticide or fertilizer, CRPFC unifies the two most important agrochemicals used in agriculture, and combine the plant protection of pesticide and the nutrients supply of fertilizer into one field operation. It cannot only save labor but also reduce time and energy consumption. Various materials have been developed recently to be used as carriers of pesticide and fertilizer, such as organic polymers, [13] bio-sourced matrices, [14] and inorganic materials. [15,16] However, most of them only provide individual function and are accompanied by complex preparation processes. Furthermore, they are very susceptible to being washed away by rain, which limit their real applications. [17] Therefore, develop an adhesive carrier for extensive use of CRPFC in agriculture is still a challenge.Nanotechnology represents a new direction for the carrier development. [18][19][20][21] Over the past years, the applications and benefits of nanotechnology, especially nanoparticles as pesticide or fertilizer carrier platforms, have generated immense developments. [22][23][24] Recently, mesoporous silica nanoparticles (MSNs) show superior performance as support for fertilizer or pesticide controlled release due to their easy functionalization modification, controllable morphology, adjustable pore volume, and thermal stability. [25][26][27][28][29] However, the adsorption capacity of MSNs was a great limitation because there are no functional sites on MSNs surface. [30] It was reported that by grafting highdensity carboxyl groups onto the pore surface of MSNs and complexing with platinum atoms, the drug loading efficiency of MSNs can be greatly improved. [31] In this work, MSNs functionalized by positive charges were developed to achieve a high loading capacity of pesticide and fertilizer (Scheme 1). Then the nanoparticles were coated by polydopamine (PDA) via self-polymerization. [32][33][34] As a kind of catecholamines, PDA is expected to be active for metals ions, [35] The volatilization and leaching for most fertilizers and pesticides raise questions about the sustainability of ecosystems. To enhance the utilization of fertilizers and pesticides, pesticide-fertilizer combined nanocomposites are developed to prolong foliar retention and play a synergistic effect of weeding and nourishing for plant growth. The pesticide-fertilizer combined nano composites are prepared based on positive-charge functionalized mesoporous silica and polydopamine, by chelating micronutrients (Zn 2+ ) and loading pesticide 2,4-D. A high loading capacity of Zn 2+ (233.4 mg g −1 ) and 2,4-D (17.8%) is achieved. Zn 2+ and the pesticide show excellent pH-responsive release behavio...

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Graphene Oxide: A New Carrier for Slow Release of Plant Micronutrients

Cited by 148 publications

References 69 publications

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

The Role of Nanotechnology in the Fortification of Plant Nutrients and Improvement of Crop Production

On‐Site Surface Coordination Complexation via Mechanochemistry for Versatile Metal–Phenolic Networks Films

Adhesive Nanocomposite for Prolonging Foliar Retention and Synergistic Weeding and Nourishing

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