Synthesis of ZnMoO4 Powder by Coprecipitation Method and Its Antibacterial Performance

Abstract

Abstract: ZnMoO₄ powder was synthesized by coprecipitation method using Zn(NO₃)₂·6H₂O and (NH₄)₆Mo₇O₂₄·4H₂O as main materials. Phase composition, microstructure of the synthesized samples were characterized by XRD, SEM, and so on. Antibacterial performance of the synthesized samples with different treatment temperatures were studied through Escherichia coli as the killing object. The results show that precursor mainly consists of non-crystalline with a small amount of ZnMoO₄, Zn₂Mo₃O₈, Zn(OH)₂ and MoO₃; the precursor is transferred into ZnMoO₄ when heat treated at 400 ℃ to 600 ℃ for 30 min. With the increase of heat treatment temperature, the crystal structure of ZnMoO₄ is gradually improved, so antibacterial performance of ZnMoO₄ is increased. When the heat treatment temperature is 600 ℃, ZnMoO₄ with good crystallization can be obtained, and particle size of ZnMoO₄ is granular and flake-like with average size of 1.5 μm. The as-synthesized ZnMoO₄ owns better antibacterial performance. Among them, antibacterial performance of ZnMoO₄ synthesized by heat treatment of 600 ℃ is the best, and its antibacterial rate arrives at 99.2% after 24 h antibacterial test. When 5% ZnMoO₄ powder is added into commercial coating slurry, antibacterial rate of the coating reaches 95.7%, which has good application prospects.

Key words: ZnMoO₄, coprecipitation method, phase composition, microstructure, antibacterial performance

CLC Number:

TQ132.4⁺1

LIU Xin, TANG Yanchao, LIU Fang, LI Jiake. Synthesis of ZnMoO₄ Powder by Coprecipitation Method and Its Antibacterial Performance[J]. Journal of Synthetic Crystals, 2021, 50(9): 1729-1734.

References

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Synthesis of ZnMoO₄ Powder by Coprecipitation Method and Its Antibacterial Performance

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