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Fabrication of phytic acid-modified wheat straw platform and its pH-responsive release performance for the pesticide imidacloprid
- Source :
- RSC Advances. 7:32777-32785
- Publication Year :
- 2017
- Publisher :
- Royal Society of Chemistry (RSC), 2017.
-
Abstract
- For the effective utilization of pesticides and the treatment of abundant waste wheat straw (WS) resources, an eco-friendly composite PA-WS platform was prepared by modification of WS with phytic acid (PA). The structure and morphology of the synthesized products were characterized via SEM, FTIR, and zeta surface potential analyses. Elemental analysis and X-ray photoelectron spectroscopy (XPS) were used to determine the degree of substitution (DS) and degree of surface substitution (DSS). The evaluation of the release properties of PA-WS@IM showed that the release of imidacloprid (IM) molecules could be controlled via a pH-sensitive dynamic chemical bond. The release efficiency of IM was enhanced with a decrease in pH and the release efficiency achieved a maximum (85.29%) at pH 2. The release efficiency of IM in a solution of Ca2+ ions was higher than in the solution of Na+ ions, while Fe3+ ions aqueous solutions had no significant influence. Due to its controllable release, cost-effectiveness, reusability of a resource and eco-friendly preparation, it is believed that PA-WS@IM may have potential application in agriculture fields to enhance the utilization efficiency of pesticides and improve the comprehensive utilization of agriculture resources.
- Subjects :
- Phytic acid
Aqueous solution
Chemistry
General Chemical Engineering
02 engineering and technology
General Chemistry
010501 environmental sciences
Straw
021001 nanoscience & nanotechnology
01 natural sciences
chemistry.chemical_compound
X-ray photoelectron spectroscopy
Elemental analysis
Imidacloprid
Molecule
Fourier transform infrared spectroscopy
0210 nano-technology
0105 earth and related environmental sciences
Nuclear chemistry
Subjects
Details
- ISSN :
- 20462069
- Volume :
- 7
- Database :
- OpenAIRE
- Journal :
- RSC Advances
- Accession number :
- edsair.doi...........b133502ccf377609601c4bef252578ca