Construction of p-n heterostructured BiOI/TiO2 nanosheets arrays for improved photoelectrochemical water splitting performance

Porosity-dependent photoelectrochemical activity of double-layered TiO2 thin films deposited by spin-coating method

“…5A) are shown to be 464.1 and 458.4 eV, respectively, confirming the presence of Ti 4+ . 27 The core level of O 1s can be fitted to two peaks centered at 531.6 and 529.9 eV (Fig. 5B), which are assigned to adsorbed water and Ti–O, respectively.…”

Deposition of inverse opal-like TiO2 thin film with enhanced photoelectrochemical activity by a spin-coating combined with a dip-coating method

“…Chronoamperometry analysis (figure 4(b)) at 1.23 V versus RHE revealed that the photocurrent density is stable in both samples. For comparison, the photocurrent density of dip-coated TiO 2 film (∼66.5 μA cm −2 at 1.23 V versus RHE) was higher as compared to TiO 2 film produced by pulsed laser deposition (6.1 μA cm −2 ) [21], pristine TiO 2 nanotubes (51.76 μA cm −2 ) [22], and TiO 2 nanosheets array (36 μA cm −2 ) [23]. It should be noted that the proposed dip-coating methodology is cheaper and less energy-consuming as compared to a well-known TiCl 4 treatment used for TiO 2 photoelectrodes modification in dye-sensitized solar cells [24,25].…”

Improvement of Photocatalytic Performance by Building Multiple Heterojunction Structures of Anatase–Rutile/BiOI Composite Fibers

“…For the crystal structure of pure TiO 2 fiber, the anatase phase and a small amount of rutile phase are found, which is consistent with the TEM results. The anatase phase is mainly located around 25.8°, 37.8°, 48.0°, and 62.7°, corresponding to (101), (004), (200), and (204) crystals, respectively [ 34 ]. Rutile phase is mainly located at 27.4°, 36.1°, 54.3°, and 69.0°, corresponding to (110), (101), (211), and (301) crystal planes, respectively [ 35 ], and no diffraction peaks of other impurities are detected.…”