The SiNPs obtained from RH in our study are similar to previously reported SiNPs obtained by similar processes ( 1 and 3,000 cm 1 and the peaks in the region 1,8001,600 cm 1 of FTIR spectra disappeared because the ligno-cellulosic structure is thermally decomposed, and the remaining ash is represented by SiNPs, with silanol group signals at approximately 3,730 cm 1
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Boulet C, Doerig CD, Carvalho TG