Adsorption Performances of Naked and 3-Aminopropyl Triethoxysilane-Modified Mesoporous TiO2 Hollow Nanospheres for Cu2+, Cd2+, Pb2+, and Cr(VI) Ions

被引：13
作者：
Hang, Ying [1 ]
Yin, Hengbo [1 ]
Ji, Yuqin [1 ]
Liu, Ye [1 ]
Lu, Zhipeng [1 ]
Wang, Aili [1 ]
Shen, Lingqin [1 ]
Yin, Haixu [1 ]
机构：
[1] Jiangsu Univ, Fac Chem & Chem Engn, Zhenjiang 212013, Peoples R China
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2017年 / 17卷 / 08期
基金：
中国国家自然科学基金;
关键词：
Metallic Ions; Adsorption Kinetics; Adsorption Isotherm; Hollow TiO2 Nanosphere; Modification; PALM KERNEL FIBER; HEAVY-METAL IONS; AQUEOUS-SOLUTION; SILICA NANOPARTICLES; CONGO RED; REMOVAL; ADSORBENTS; ANATASE; WATER; NANOCOMPOSITES;
D O I：
10.1166/jnn.2017.13858
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Mesoporous hollow TiO2 nanospheres composed of anatase TiO2 nanoparticles were prepared by the sacrificial template method using methyl acrylic acid/styrene latex as the template. The mesoporous hollow TiO2 nanospheres were modified with 3-aminopropyl triethoxysilane (APTES) through the Ti-O-Si bonding. The adsorption of Cu2+, Cd2+, and Pb2+ ions on the naked and APTES-modified hollow TiO2 nanospheres followed the pseudo-second-order adsorption kinetics. According to the Langmuir adsorption isotherms, the maximum adsorption capacities of APTES-modified hollow TiO2 nanospheres for Cu2+, Cd2+, and Pb2+ ions were 12.7, 17.5, and 1.8 times those of naked hollow TiO2 nanospheres, respectively. When Cr(VI) was adsorbed on the surface of the APTES-modified hollow TiO2 nanosphere, the oxidation property of Cr(VI) decayed its adsorption.
引用
收藏
页码：5539 / 5549
页数：11
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