杨朵,李艳娟,高丽,杨敬贺.铁/石墨烯的制备及其对亚甲基蓝的吸附降解[J].包装工程,2017,38(13):25-31.
YANG Duo,LI Yan-juan,GAO Li,YANG Jing-he.Preparation of Iron/Graphene and Their Adsorption and Degradation of Methylene Blue[J].Packaging Engineering,2017,38(13):25-31. |
| 铁/石墨烯的制备及其对亚甲基蓝的吸附降解 |
| Preparation of Iron/Graphene and Their Adsorption and Degradation of Methylene Blue |
| 投稿时间：2017-04-19 修订日期：2017-07-10 |
| DOI： |
| 中文关键词: 铁 活性炭 石墨烯 亚甲基蓝 降解 |
| 英文关键词: iron activated carbon graphene methylene blue degradation |
| 基金项目:国家自然科学基金（21403053，U1404503） |
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| 摘要点击次数: |
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| 中文摘要: |
| 目的 合成铁/活性炭和铁/石墨烯材料，将其作为催化剂考察对水中亚甲基蓝染料的吸附和降解，制备出最优催化剂。方法 探讨20 ℃时铁/活性炭和铁/石墨烯材料的吸附能力、降解能力以及双氧水用量对其降解效果的影响，并研究铁/活性炭和铁/石墨烯材料的吸附模式，计算动力学参数。结果 当用相同质量、不同铁含量的铁/活性炭和铁/石墨烯材料吸附同一初始浓度的亚甲基蓝溶液时，纯活性炭和纯石墨烯的吸附效果最好，但其催化降解能力随铁含量的增大而增强。当铁的质量分数为20%时的铁/活性炭和铁/石墨烯为优选催化剂，其对亚甲基蓝的吸附符合Freundlich方程模型，倾向于多层吸附。铁(20%)/石墨烯催化分解双氧水的活化能大于铁(20%)/活性炭作用时的活化能。结论 体系中活化能适度能避免双氧水过度快速分解，从而可增加其对亚甲基蓝的作用时间，提高体系的催化降解效果。 |
| 英文摘要: |
| The work aims to prepare the optimal catalyst by synthesizing iron/activated carbon (Fe/C) and iron/graphene (Fe/G) and investigating the adsorption and degradation for the methylene blue dyes in the water with the catalyst prepared based on the afore-said synthesized materials. The adsorption and degradation ability of Fe/C and Fe/G at 20 ℃ and the influences of the amount of hydrogen peroxide on their degradation effect were discussed. The adsorption mode of Fe/C and Fe/G was researched and the kinetic parameter was calculated. When Fe/C and Fe/G of the same mass and with different iron contents were used to adsorb the methylene blue solution of the same initial concentration, and the adsorption effects of pure activated carbon and pure graphene were the best; however, their catalytic and degradation ability would be enhanced with the increase in iron content. When the mass fraction of iron was 20%, Fe/C and Fe/G were the optimal catalysts and their adsorption for methylene blue conformed to Freundlich equation model, prone to multilayer adsorption. The activation energy of iron (20%)/graphene to catalyze and degrade hydrogen peroxide was greater than that of iron (20%)/activated carbon in effect. The activation energy in the system can moderately avoid exceedingly fast decomposition of hydrogen peroxide, thus increasing the time to act upon the methylene blue and improving the catalytic and degradation ability of the system. |
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