Spectroscopic, structural and morphological properties of spin coated Zn:TiO2 thin films

Black Phosphorus as Promoter for Noble Metal‐Free Photocatalytic Hydrogen Production

“…Figure 2 shows Raman spectra of TiO 2 , BP, TiO 2 /BP(1 %) and TiO 2 /BP(1 %)/CoP(2 %). In pure TiO 2 , two characteristic Raman active modes with symmetries E 1g and B 1g were observed at 141 cm −1 and 394 cm −1 that were associated to anatase: the strongest peak located at 141 cm −1 correlates to the E 1g mode of O−Ti−O bond vibrations, while the peak at ν=394 cm −1 can be attributed to the B 1g phonon mode of O−Ti−O anti‐symmetric bending vibrations [42,43] . For pure BP, three Raman modes were identified at 360 cm −1 , 436 cm −1, and 464 cm −1 corresponding to the out‐of‐plane A g 1 and in‐plane B 2g , and A g 2 phonon modes of orthorhombic BP [44,45] .…”

“…In pure TiO 2 , two characteristic Raman active modes with symmetries E 1g and B 1g were observed at 141 cm À 1 and 394 cm À 1 that were associated to anatase: the strongest peak located at 141 cm À 1 correlates to the E 1g mode of OÀ TiÀ O bond vibrations, while the peak at ν = 394 cm À 1 can be attributed to the B 1g phonon mode of OÀ TiÀ O anti-symmetric bending vibrations. [42,43] For pure BP, three Raman modes were identified at 360 cm À 1 , 436 cm À 1, and 464 cm À 1 corresponding to the out-of-plane A g 1 and in-plane B 2g , and A g 2 phonon modes of orthorhombic BP. [44,45] The binary and ternary composites exhibited the characteristic Raman peaks of TiO 2 and BP described above, with no significant variation in the peak position.…”

In situ preparation of an anatase/rutile-TiO2/Ti3C2Tx hybrid electrode for durable sodium ion batteries

“…Moreover, the shi of the peak from 394 to 385 cm À1 and decline of the peak at 150 cm À1 in the Raman spectrum of A/R-TiO 2 /Ti 3 C 2 T x reveal the existence of R-TiO 2 nanoparticles. 34,35 In Fig. 2c, a broad band at 3100 cm À1 is ascribed to the stretching vibration of -OH groups that come from the terminations of Ti 3 C 2 T x , which consist of -OH and -F terminations.…”