Hierarchical Bi2WO6/TiO2-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

Zehao Lin, Zhan Yang and Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762. https://doi.org/10.3762/bjnano.13.66

Supporting Information

Dosages of Bi(NO3)3·5H2O and Na2WO4·2H2O reagents in the preparation processes. EDX spectra and components of the related samples. Electron micrographs of the control samples. XPS survey spectrum of the 70%−Bi2WO6/TiO2-NT nanocomposite. The visible-light-induced photocatalytic degradation profiles and the corresponding linear fitting curves toward the photodegradation of RhB pollutant solution by the samples. The reduction profiles toward the Cr(VI) pollutant solution and the degradation profiles toward the RhB pollutant solution as well as the corresponding linear fitting curves. The visible-light-induced photocatalytic degradation profiles toward the photodegradation of the RhB pollutant solution for five cycles by the 70%−Bi2WO6/TiO2-NT nanocomposite, and the XRD patterns and FE-SEM images of the sample after 5-cycle photocatalysis. The UV–vis DRS, bandgaps and PL emission spectra of the related samples. The transient photocurrent responses and EIS Nyquist plots of the control samples. The visible-light-induced photocatalytic degradation profiles toward the RhB pollutant solution added with IPA, EDTA-2Na, and p-BQ by the 70%−Bi2WO6/TiO2-NT nanocomposite, and the schematic illustration of the corresponding photocatalytic degradation mechanism. The comparison of the hierarchical Bi2WO6/TiO2-nanotube composite with other cellulose-derived nanocomposites that were reported by our group.

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