X-ray diffraction patterns of photocatalyst for (a), 0.1 (b), 0.25 (c), 0.5 (d), 0.75 (e), and 1.0 (f), along with the JCPDS data of and .
(A) UV-visible, diffuse reflectance spectra of photocatalyst for (a), 0.1 (b), 0.25 (c), 0.5 (d), 0.75 (e), and 1.0 (f). The inset shows colors of respective samples, (B) The graph of indium concentration in versus the measured band gap energy.
The morphology of (a) and (b) examined by SEM.
The XPS core-level spectra of (A) Ga , (B) In in samples. The respective value of for (A) Ga as (a) 0.0, (b) 0.1, (c) 0.25, (d) 0.5, and (e) 0.75 and (B) In as (a) 0.1, (b) 0.25, (c) 0.5, and (d) 0.75.
Ga -edge XANES spectra of respective samples for , 0.1, 0.25, and 0.5.
(A) Theoretically calculated Ga -edge XANES spectra of (a) in its own lattice, (b) without the second shell of Ga—M (, Ga, or In), and (c) in lattice. (B) Theoretically calculated In -edge XANES spectrum of .
Imaginary functions of Fourier-transformed for respective samples with , 0.1, 0.25, and 0.5.
Theoretically calculated total density of states (DOS) for and . The top of the valence band was set to . The inset shows the finer details near respective band gaps.
The average rate of evolution over [ (a), 0.1 (b), 0.25 (c), 0.5 (d), 0.75 (e), and 1.0 (f)] from an electrolyte solution containing and under visible light irradiation. Catalysts: loaded Pt, Light source: Hg-arc lamp , equipped with IR liquid filter and with UV cut-off filter . The inset shows the time course of production on Pt-loaded samples [ (a) and 0.1 (b)] under visible light illumination. Catalysts: loaded Pt; electrolyte: , Light source: Hg-arc lamp equipped with IR liquid filter and with UV cut-off filter .
Proposed schematic band structures for , , and .
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