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Effects of adsorption capacity and activity site on Fenton-like catalytic performance for Na and Fe co-doped g-C3N4
Separation and Purification Technology ( IF 8.6 ) Pub Date : 2020-09-25 , DOI: 10.1016/j.seppur.2020.117765
Xunhe Wang , Meilin He , Zhaodong Nan

Na and Fe co-doped g-C3N4 was selected as a Fenton-like catalyst to degrade Methylene blue (MB). The properties of the catalyst changed with different contents of Fe and Na. The adsorption capacity and degradation ratio for MB increased from 1.16% to 56.7% and 89.6% to 98.4%, respectively, when partial Fe was replaced by Na. And the rate constants increased from 0.0886 min−1 to 0.1702 min−1. The experimental results indicate that the adsorption capacity and the activity site of the catalyst are the key effects on the catalytic activity. The adsorption capacity was affected by the zeta potential of the catalyst. It was almost not effects of between specific surface area, electron transfer, band gap, and positions of the valence band potential and conduction band potential on the catalytic activity. This study may give a sustainable strategy to synthesize catalysts with enhanced activity for the Fenton reaction.



中文翻译:

吸附容量和活性部位对Na和Fe共掺杂gC 3 N 4的芬顿样催化性能的影响

选择Na和Fe共掺杂的gC 3 N 4作为芬顿类催化剂以降解亚甲基蓝(MB)。催化剂的性质随铁和钠含量的不同而变化。当部分铁被Na取代时,MB的吸附能力和降解率分别从1.16%增加到56.7%,从89.6%增加到98.4%。速率常数从0.0886 min -1增加到0.1702 min -1。实验结果表明,催化剂的吸附容量和活性部位是影响催化剂活性的关键因素。吸附能力受催化剂的ζ电势的影响。比表面积,电子转移,带隙以及价带电势和导带电势的位置对催化活性几乎没有影响。这项研究可以为合成具有增强Fenton反应活性的催化剂提供可持续的策略。

更新日期:2020-10-02
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