Synthesis of potassium metal ferrocyanide_Al-MCM-41 with fast and selective adsorption of cesium

doi:10.1016/j.colsurfa.2020.126107

	Synthesis of potassium metal ferrocyanide_Al-MCM-41 with fast and selective adsorption of cesium
	Dong, Chaochao; Deng, Xiaochuan; Guo, Xueqin; Wang, Bin; Ye, Xiushen; Fan, Jie; Zhu, Chaoliang; Fan, Faying; Qing, Binju
第一作者	Dong, Chaochao
	2021-03-20
发表期刊	COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ISSN	0927-7757
卷号	613
摘要	In this work, low-cost and non-toxic diatomite was used as the silicon source and aluminum source to synthesize Al doped MCM-41 (Al-MCM-41), and Cs+ adsorbents has been prepared by immobilizing the potassium metal ferrocyanide (KMeFC, Me = Cu2+, Ni2+, Zn2+, Co2+, and Fe3+) on Al-MCM-41. The adsorbents have high surface area from 471.7 to 685.8 m(2) g(-1), and their Cs+ adsorption performance has been detailed investigated. The max Cs+ adsorption capacity is 1.1602 mmol g(-1), 1.092 mmol g(-1), 0.8174 mmol g(-1), 0.6973 mmol g(-1), and 0.4541 mmol g(-1) for KZnFC/Al-MCM-41, KNiFC/Al-MCM-41, KCoFC/Al-MCM-41, KCuFC/Al-MCM-41, and KFeFC/Al-MCM-41, respectively. The KZnFC/Al-MCM-41 presents the highest adsorption capacity, and it can reach adsorption equilibrium with 10 min. The pH experiment results show the KZnFC/Al-MCM-41 can keep a higher adsorption capacity in pH range from 2 to 11. What more, the KZnFC/Al-MCM-41 present good adsorption selectivity against to K+, Na+, Ca2+, and Mg2+. The adsorption mechanism was also discussed, and the adsorption results show the adsorption process of Cs+ by KMeFC/Al-MCM-41 conforms to pseudo-second-order kinetics and Langmuir isotherm adsorption model, and the thermodynamic experiments confirmed theadsorption process of Cs+ by KMeFC/Al-MCM-41 are endothermic and spontaneous. The FT-IR, XRD, and XPS of KZnFC/Al-MCM-41 before and after adsorption of Cs+ inferred that the adsorption process of the adsorbents mainly completed by the exchange between Cs+ and K+. This work provide a novel strategy to synthesis of KZnFC/Al-MCM-41 in low-cost and green route, and the adsorbent as-synthesized in this work is an efficient candidate for removing or extracting Cs+ from radioactive wastewater and mineral resources.
DOI	10.1016/j.colsurfa.2020.126107
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/34172
专题	盐湖资源综合利用工程技术中心
推荐引用方式 GB/T 7714	Dong, Chaochao,Deng, Xiaochuan,Guo, Xueqin,et al. Synthesis of potassium metal ferrocyanide_Al-MCM-41 with fast and selective adsorption of cesium[J]. COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,2021,613.
APA	Dong, Chaochao.,Deng, Xiaochuan.,Guo, Xueqin.,Wang, Bin.,Ye, Xiushen.,...&Qing, Binju.(2021).Synthesis of potassium metal ferrocyanide_Al-MCM-41 with fast and selective adsorption of cesium.COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS,613.
MLA	Dong, Chaochao,et al."Synthesis of potassium metal ferrocyanide_Al-MCM-41 with fast and selective adsorption of cesium".COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS 613(2021).

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