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首页> 外文期刊>Water Science >Removal of methylene blue and rhodamine B from water by zirconium oxide/graphene
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Removal of methylene blue and rhodamine B from water by zirconium oxide/graphene

机译：氧化锆/石墨烯从水中去除亚甲基蓝和若丹明B

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Methylene blue (MB) and rhodamine B dyes (RB) were degraded from water using zirconium oxide (ZrO 2 ) and zirconium oxide/graphene composites (ZrO 2 /GR) as photocatalyst. The photocatalytic efficiency was calculated from absorption spectra obtained using UV–visible spectroscopy. It has been observed that photodegradation time as well as photocatalytic efficiency increase with the concentration of catalyst up to a certain limit after which effect was reversed. The degradation was studied as a function of pH also. It was found that photocatalytic efficiency was more in alkaline medium than acidic medium. Degradation of RB takes place at higher value of pH as compared to MB. The degradation time for MB was 1h using ZrO 2 which get reduced to 32min using ZrO 2 /GR composite and for RB it reduced to 40min (using ZrO 2 /GR) from 80min (ZrO 2 ).
机译：使用氧化锆（ZrO 2）和氧化锆/石墨烯复合物（ZrO 2 / GR）作为光催化剂，从水中降解亚甲基蓝（MB）和若丹明B染料（RB）。根据使用紫外可见光谱仪获得的吸收光谱计算光催化效率。已经观察到，随着催化剂浓度达到一定极限，光降解时间和光催化效率增加，此后效果相反。还研究了降解与pH的关系。发现在碱性介质中光催化效率比在酸性介质中高。与MB相比，RB的降解在更高的pH值下发生。使用ZrO 2的MB降解时间为1h，使用ZrO 2 / GR复合物的降解时间降至32min，对于RB，降解时间从80min（ZrO 2）降低至40min（使用ZrO 2 / GR）。

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