Boron nitride nanoplates supported zero-valent iron nanocomposites for enhanced decolorization of methyl orange with the assistance of ultrasonic irradiation

Water Science and Technology : a Journal of the International Association on Water Pollution Research
Yiming Zha, Tianlin Wang

Abstract

In this work, boron nitride nanoplates (BNNPs) supported nanoscale zero-valent iron (nZVI) was prepared through facile liquid-phase chemical reduction of ferric ion by borohydride under ambient conditions in the presence of BNNPs. The nZVI@BNNPs hybrids were characterized by scanning electron microscopy, X-ray diffraction and magnetic properties measurement. The hybrid material was evaluated for decolorization of a common azo dye, methyl orange (MO), with the assistance of ultrasonic irradiation. Results exhibited that a complete decolorization of 100 mg/L MO was achieved within 6 min using nZVI@BNNPs as the active material. Compared with bare nZVI and BNNPs, nZVI@BNNPs provided a faster reaction process for MO decolorization. The kinetic rate constants of MO decolorization reached 0.8175 min(-1) under ultrasound-assisted condition due to the synergistic effect of ultrasonic irradiation. Fluorescence spectrum experiment confirmed that hydroxyl radicals could be generated in the system combined nZVI with ultrasonic irradiation, and as a result, hydroxyl radicals would contribute to the decolorization process of MO.

References

Apr 20, 2006·Applied Microbiology and Biotechnology·Suizhou RenGuoping Sun
May 14, 2010·ACS Nano·Dmitri GolbergChunyi Zhi
Jun 23, 2010·Journal of Hazardous Materials·Mahmood IramHuizhou Liu
Apr 22, 2011·Journal of Colloid and Interface Science·Rongzhi ChenDmitri Golberg
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May 9, 2013·Nature Communications·Weiwei LeiYing Chen
Jan 25, 2014·Journal of Hazardous Materials·Fenglian FuHong Liu

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Citations

Dec 8, 2019·Environmental Science and Pollution Research International·Kalsoom AkhtarSher Bahadar Khan
Jun 27, 2019·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Guang XianZhiguo Zou

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