the North University of China for the support given for carrying out this work under projects from the National Natural Science Fundation of China(Nos.20571066 and 20871108)
Fe(OH)3 precursor sol was prepared by a sol-gel method. The precursor sol was dipped onto the absorbent cotton, and gel was formed on the absorbent cotton template after the volatilization of moisture. Fe2O3 microtu...