محمدجواد جهانشاهی

Nanocelluloses (NCs) produced from cellulose as a natural biopolymer find diverse applications in different fields due to their unique properties such as biocompatibility, surface reactivity, availability, low density and cytotoxicity. Some properties of nanocellulose, such as its surface chemistry, morphology, aspect ratio, crystal structure, and degree of crystallinity depend on the cellulose source and manufacturing method[1]. Apparently, the photocatalytic performance of nanocelluloses can be enhanced by coupling with Tungsten oxide (WO3), resulting in an improvement in the photodegradation efficiency of tetracycline (TC). Since, WO3 with a band gap energy (2.4_2.8e V) is used as a photocatalyst that responds to visible light has been extensively developed[2]. In this research, two-dimensional WO3/NC composite photocatalysts with specific surface areas and very large pore volumes were synthesized by simple hydrothermal treatment. Fig(1.a) shows the FT-IR spectrum. It is clear that pure WO3 has a large peak between 450 and 900 cm-1 which is due to W-O-W stretching[3]. The results showed that the lowest photodegradation capacity of is related to pH 4 (about 14.8%), and when pH increases to 7 and 9, TC degradation efficiency increases to 50.5% and 43% after 60 minutes, respectively Fig(1.b).