02082nas a2200325   4500008004100000022001400041245009900055210006900154260000900223300001100232490000800243520103500251653002701286653001601313653001501329653001401344100002701358700001801385700002501403700001701428700002901445700001801474700002001492700002301512700001701535700001901552700003701571700002001608856012801628       2023                        eng d  a0959-652600aNanosilica from Averrhoa bilimbi juice pre-treated rice husk: preparation and characterization0 aNanosilica from Averrhoa bilimbi juice pretreated rice husk prep  cAUG   a1374760 v4133 a<p>
	The preparation of nanosilica from rice husk without using any concentrated mineral acids is a novel concept. This work proposes a bioleaching strategy to remove metallic impurities from rice husk for the preparation of nanosilica. Herein, nanosilica (BJRHS) was prepared by calcinating Averrhoa bilimbi juice pre-treated rice husks in a muffle furnace. The chemical and atomic structures of commercial precipitated silica (CS), rice husk ash (RHA), and BJRHS were analyzed using different analytical techniques. The optimal leaching time, calcination temperature, and calcination time were 1 h, 500 degrees C, and 6 h respectively. The particle size of BJRHS was found to be 6-12 nm, which is less than that of RHA and CS. The BET surface area of BJRHS (204 m2/g) was found to be greater than RHA (110.5 m2/g) and CS (172.1 m2/g). Mesoporous nanosilica with excellent surface area and purity was produced sustainably from rice husk which could be recommended to use in the field of catalysis, polymer technology, etc.</p>
10aAverrhoa bilimbi juice10aBioleaching10aNanosilica10arice husk1 aDominic, C., D. Midhun1 aNeenu, K., V.1 aBegum, P., M. Sabura1 aJoseph, Rani1 aRosa, Derval, dos Santos1 aDuan, Yongxin1 aBalan, Aiswarya1 aAjithkumar, T., G.1 aSoumya, Mary1 aShelke, Ankita1 aParameswaranpillai, Jyotishkumar1 aBadawi, Michael  uhttps://library.ncl.res.in/content/nanosilica-averrhoa-bilimbi-juice-pre-treated-rice-husk-preparation-and-characterization