Silver Nanoparticles Synthesised within the Silica Matrix in Hyperstoichiometrical of Mercury from Aqueous Solutions

2018 9th International Conference on Environmental Science and Technology

生态环境科学

Korobeinyk, A.V.^1,2 ; Inglezakis, V.J.^1

Environmental Science and Technology Group (ESTg), Chemical Engineering Department, School of Engineering, Nazarbayev University, Astana, Kazakhstan^1

O. O. Chuiko Institute of Surface Chemistry of NAS of Ukraine, Kyiv, Ukraine^2

关键词: Adsorption capacities;    Higher efficiency;    Hyperstoichiometry;    Mercury adsorption;    Mercury removal;    Nanoparticle diameter;    Silver loading;    Silver particles;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/182/1/012013/pdf
DOI  :  10.1088/1755-1315/182/1/012013

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Mercury adsorption of silver containing silica-based nanocomposites was evaluated. Maximum adsorption capacity of 0.4 mmol g-1 was achieved at silver loading of 0.5 mmol g-1. Nevertheless, if to calculate in respect to silver content the mercury adsorption capacity was generally elevated along with decreasing silver nanoparticle diameter. It has been demonstrated that silver particle diameters and loading should collectively be taken into consideration in designing the optimal mercury removal process. Further recommendations have been proposed with the aim of increasing the mercury removal efficiency using silver nanoparticles deposited on the surface of silica with lover silver loading, while achieving similar or even higher efficiencies due to observed hyperstoichiometry effect.