水凝胶负载BiOI活化过一硫酸盐降解尼泊金甲酯

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Abstract P(HEA-APTMACl)-BiOI was prepared by chemical precipitation method and the hydrogel synthesized by radiation polymerization was used as catalyst carriers. The catalyst was characterized by scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and X-ray diffraction (XRD). These results showed that BiOI was successfully loaded on the hydrogel. The p(HEA-APTMACl)-BiOI/peroxymonosulfate (PMS) presented high methylparaben (MP) degradation efficiency under visible light, and the effects of several operating parameters (PMS dosage, BiOI loadings and initial MP concentration) on the MP degradation efficiency were also explored. The results demonstrated that there was a synergistic effect between p(HEA-APTMACl), BiOI and PMS. In addition, the MP (0.328mmol/L) degradation efficiency reached 99% within 2h when PMS concentration was 1.5mmol/L and the catalyst dosage was 0.1g. The addition of Cl^- accelerated the degradation rate of MP, while the SO₄^2- lead to hysteresis in MP degradation. Moreover, the MP degradation efficiency was reduced by the presence of HCO₃^-, but it was little influenced by NO₃^- and H₂PO₄^-.

Key words： hydrogel BiOI peroxymonosulfate methylparaben

Received: 29 December 2018

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X703

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	HU You-you
	LI Zheng-kui

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HU You-you,LI Zheng-kui. Activation of peroxymonosulfate by hydrogel supported BiOI for methylparaben degradation[J]. CHINA ENVIRONMENTAL SCIENCECE, 2019, 39(8): 3249-3254.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2019/V39/I8/3249

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