A novel, facile, and efficient two-step hydrothermal route for WS2 nanosheets and its optimistic exposure as competent industrial-level sonocatalyst

A study on the effect of phase conversion of tungsten nanostructures on their electrochemical energy storage performance

“…The peak detected at 650 cm À1 indicates W-S stretching and bending vibrations in WS 2 and that at nearly 1082 cm À1 refers to the S-S vibrations in the as-prepared sample. 32,35,46,47 Hence in the WO 3Àx sample, a composite formation of WO 2.72 :WS 2 was confirmed. The shift in peaks were observed due to the formation of WS 2 in the WO 3Àx sample.…”

“…Also the peak observed at 452 cm −1 suggests the confirmation of the existence of the S–S stretching vibrations of WS 2 . 32,35,46,47…”

“…Also the peak observed at 452 cm À1 suggests the confirmation of the existence of the S-S stretching vibrations of WS 2 . 32,35,46,47 The optical properties of WO 3 , WO 3Àx , and WS 2 were analyzed by the UV-visible spectroscopy technique. The optical band gap of each sample was calculated by the diffuse reflection spectra (DRS) method with the help the Kubelka-Munk equation 36 and shown in Fig.…”

Zinc-chromium layered double hydroxides anchored on carbon nanotube and biochar for ultrasound-assisted photocatalysis of rifampicin

“… ∼85 [36] ZnO Sonophotocatalysis Methyl orange [pollutant] = 50 mg L −1 , [catalyst] = 0.1 g L −1 , light source = 300 W, ultrasonic power = 200 W. ∼42 [37] ZnCr LDH Photocatalysis Rhodamine B, Rhodamine 6G, 4-chloro 2-nitro, phenol [pollutant] = 100 mg L −1 , [catalyst] = 1 g L −1 , light source = visible light. ∼57 ∼62 ∼30 [38] WS 2 Sonocatalysis Methylene blue [pollutant] = 10 mg L −1 , [catalyst] = 1 g L −1 , ultrasonic power = 250 W. ∼85 [39] FeAl LDH/ Hydrochar Photocatalysis Diethyl phthalate [pollutant] = 20 mg L −1 , [catalyst] = 1 g L −1 , light source = 500 W Xenon lamp. ∼25 [40] ZnCr LDH/BC Sonophotocatalysis Rifampicin [pollutant] = 15 mg L −1 , [catalyst] = 0.6 g L −1 , light source = visible light, ultrasonic power = 150 W. 98 Present study …”