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美國布魯克海文儀器公司>技術文章>測量應用案例-20220401

技術文章

測量應用案例-20220401

閱讀:143          發布時間:2022-4-26
 

文獻名:One-pot synthesis of silicon-based zirconium phosphate for the enhanced adsorption of Sr (II) from the contaminated wastewater

 

 

作者 Zihao Jiaoa,Yiguo Menga,Chunlin HeaXiangbiao Yinb,Xinpeng Wanga,Yuezhou Weiac

a Guangxi Key Laboratory of Processing for Non-Ferrous Metals and Featured Materials, School of Resources, Environment and Materials, Guangxi University, 100 Daxue East Road, Nanning, 530004, PR China

b Fukushima Reconstruction and Revitalization Unit, Institute of Innovative Research (IIR), Tokyo Institute of Technology, 2-12-1, Ookayama, Meguro-ku, Tokyo, 152-8550, Japan

c School of Nuclear Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai, 200240, PR China

 

 

 

摘要:The composite of zirconium phosphate (ZrP) loaded on mesoporous silica pellet (MSP) was typically prepared by one-pot liquid phase grafting method to develop an effective inorganic adsorbent for strontium (Sr) ion removal from the contaminated water. The as-synthesized product was well characterized by energy dispersive X-ray spectroscopy (SEM-EDS), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES), N2 adsorption–desorption isotherms and FT–IR. The adsorption of Sr2+ on ZrP/MSP composite was systematically investigated as the functions of pH, contact time, ionic strength, and various ions interference. It showed that Sr adsorption on ZrP/MSP was highly dependent on pH and the concentration of metal ion, achieving larger adsorption capacity, faster adsorption equilibrium, and higher ion selectivity than those of bare ZrP under batch reaction conditions. The Langmuir model and the pseudo-second-order model separately fitted the adsorption isotherm and kinetic data better than the Freundlich and pseudo-first-order ones. These results suggested that our present methodology may provide a general synthesis of silica supported zirconium phosphate with mesoporous structure in large surface areas which could be used as inorganic composite adsorbent for effective removal of strontium ions from the contaminated solutions.

 

關鍵詞:Zirconium phosphate,Liquid phase graftingStrontium adsorptionOne-pot synthesis

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