Irradiation induced fabrication of nano networks and the applications in environmental remediation

D.Q. Cai, J. Zhang, Z.Y. Wu
Hefei Institutes of Physical Science, Chinese Academy of Sciences, CN

Keywords: nano-rods, nano networks, high-energy electron beam, ion beam, attapulgite

Summary:

Compared with nano-rods, nano networks possess more outstanding properties and higher application potential. Therefore, fabrication of nano-materials with nano networks structure has recently attracted much attention. This work develops a facile fabrication approach for nano networks- shaped inorganic materials using high-energy electron beam (HEEB) and ion beam (IB) irradiation. Herein, nano rod-shaped attapulgite (RATP) is selected as the model material, and it can be transformed to porous nano networks attapulgite (NATP) after HEEB and IB irradiation because of the thermal, charge and impact effects. Compared with RATP, NATP displays higher dispersion, porosity, BET surface area and thus higher adsorption and binding performance on fertilizer or pesticide. Based on this, loss control fertilizer (LCF) and loss control pesticide (LCP) were developed by adding NATP to traditional fertilizer and pesticide. LCF or LCP illustrated higher adhesion capacity in soil or on leaf surface and thus lower loss amount through leaching and volatilization, so that the utilization ratios of fertilizer and pesticide were significantly increased and their pollution risks were substantially lowered. In a word, this article provides an immediate fabrication method for nano networks which can effectively control the loss of fertilizer and pesticide displaying a huge remediation potential on environment.