Preparation of Sulfhydryl Functionalized Mesoporous Silica Particles and Application in Adsorption of Cd²⁺  

作　　者：Hong Yu Jiaming Zhang Shihan Mao Xiao Wei Hong Yu;Jiaming Zhang;Shihan Mao;Xiao Wei(Key Laboratory of MEMS Ministry of Education, Southeast University, Nanjing, China)

机构地区：[1]Key Laboratory of MEMS Ministry of Education, Southeast University, Nanjing, China

出　　处：《Advances in Materials Physics and Chemistry》2021年第11期202-211,共10页材料物理与化学进展（英文）

摘　　要：An improved soft template method to prepare sulfhydryl functionalized mesoporous silica nanoparticles is proposed. It is shown that the prepared nanoparticles maintain a relatively uniform spherical structure with a particle size range of 20<span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">-</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">30</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">nm and a large specific surface area of about 926</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">m²/g. The sample is used to absorb heavy metal Cadmium ions (Cd²⁺) in water. The experimental results show that the sulfhydryl functionalized mesoporous silica is sensitive to Cadmium ions and has good selectivity. The detection limit can be estimated to be as low as 1.35</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">μg/L.</span>An improved soft template method to prepare sulfhydryl functionalized mesoporous silica nanoparticles is proposed. It is shown that the prepared nanoparticles maintain a relatively uniform spherical structure with a particle size range of 20<span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">-</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">30</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">nm and a large specific surface area of about 926</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">m²/g. The sample is used to absorb heavy metal Cadmium ions (Cd²⁺) in water. The experimental results show that the sulfhydryl functionalized mesoporous silica is sensitive to Cadmium ions and has good selectivity. The detection limit can be estimated to be as low as 1.35</span><span style="white-space:normal;font-size:10pt;font-family:;" "=""> </span><span style="white-space:normal;font-size:10pt;font-family:;" "="">μg/L.</span>

关 键 词：Mesoporous Silica Nanoparticles FUNCTIONALIZED Cadmium Ions 

分 类 号：O64[理学—物理化学]