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

被引：47

作者：

Jiao, Zihao ^{[1
]}

Meng, Yiguo ^{[1
]}

He, Chunlin ^{[1
]}

Yin, Xiangbiao ^{[2
]}

Wang, Xinpeng ^{[1
]}

Wei, Yuezhou ^{[1
,3
]}

机构：

[1] Guangxi Univ, Sch Resources Environm & Mat, Guangxi Key Lab Proc Nonferrous Met & Featured Ma, 100 Daxue East Rd, Nanning 530004, Peoples R China

[2] Tokyo Inst Technol, Inst Innovat Res IIR, Fukushima Reconstruct & Revitalizat Unit, Meguro Ku, 2-12-1 Ookayama, Tokyo 1528550, Japan

[3] Shanghai Jiao Tong Univ, Sch Nucl Sci & Engn, 800 Dong Chuan Rd, Shanghai 200240, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2021年 / 318卷

基金：

中国国家自然科学基金;

关键词：

Zirconium phosphate; Liquid phase grafting; Strontium adsorption; One-pot synthesis; ALKALINE-EARTH METALS; RADIOACTIVE STRONTIUM; EFFICIENT REMOVAL; AQUEOUS-SOLUTIONS; ION-EXCHANGE; ACID; RADIONUCLIDES; EQUILIBRIUM; SBA-15; KINETICS;

D O I：

10.1016/j.micromeso.2021.111016

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

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.

引用

页数：9

共 60 条

[1] Samarium and dysprosium removal using 11-molybdo-vanadophosphoric acid supported on Zr modified mesoporous silica SBA-15 [J].