NH4ZnPO4 powders were synthesized using a simple precipitation method at room temperature. The effects of polyvinyl pyrrolidone (PVP), polyvinyl alcohol (PVA), glucose, and hexadecyltrimethylammonium bromide (CTAB) solutions on the morphology and structure of the prepared samples were investigated. The phase composition and morphology of the prepared samples were characterized using X-ray diffraction and scanning electron microscopy, respectively. Depending on the polymer sources, the hexagonal structure prepared using non-surfactant of water completely changed to monoclinic structure when CTAB was added. X-ray absorption near-edge structure (XANES) and X-ray photoelectron spectroscopy (XPS) were performed to study the local structure and surface electronic structure of the prepared samples, confirming that the oxidation states of P and Zn ions are 5+ and 2+, respectively. On the basis of the results of inductively coupled plasma atomic emission spectroscopy (ICP-OES), the NH4ZnPO4 powders can be classified as a slow-release fertilizer where less than 15％ of the ions were released in 24 h. A simple precipitation method using water, PVP, PVA, sucrose, and CTAB as a template can be used to syn-thesize NH4ZnPO4 powders. In addition, this method may be extended for the preparation of other oxide materials.

School of Physics,Institute of Science,Suranaree University of Technology,Nakhon Ratchasima 30000,Thailand;Synchrotron Light Research Institute(Public Organizer),Nakhon Ratchasima 30000,Thailand;SUT-NANOTEC RNN on Nanomaterials and Advanced Characterizations,Suranaree University of Technology,Nakhon Ratchasima 30000,Thailand

[1]Santi Phumying;Thongsuk Sichumsaeng;Pinit Kidkhunthod;Narong Chanlek;Jessada Khajonrit;Somchai Sonsupap;Santi Maensiri-.Influence of polymer solution on the morphology and local structure of NH4ZnPO4 powders synthesized by a simple precipitation method at room temperature)[J].矿物冶金与材料学报,2022(02):298-304

NH4ZnPO4,hexadecyltrimethylammonium

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