Tug-of-war driven by the structure of the carboxylic acids: tuning the size, morphology, and photocatalytic activity of α-Ag2WO4

Supplementary Materials: The following supporting information can be downloaded at: www.mdpi.com/xxx/s1, Figure S1. XRD patterns of α-Ag₂WO₄ (A), α-Ag₂WO₄-TA (B), α-Ag₂WO₄-BA (C), and α-Ag₂WO₄-CA (D) samples. The asterisk indicates the position and relative intensity of XRD patterns for the phase reported in ICSD file No. 4165; Table S1: Lattice parameters, unit cell volume and statistical parameters of quality obtained by Rietveld refinement for α-Ag₂WO₄ (A), α-Ag₂WO₄-TA (B), α-Ag₂WO₄-BA (C), and α-Ag₂WO₄-CA (D) samples; Figure S2. Rietveld refinement plot of α-Ag₂WO₄ (A), α-Ag₂WO₄-TA (B), α-Ag₂WO₄-BA (C), and α-Ag₂WO₄-CA (D) samples; Figure S3. Raman spectroscopy of samples. The vertical dashed lines indicate the position of the Raman peaks and active modes (A). FTIR spectra of samples. The vertical lines indicate the relative positions of the infrared-active modes (B); Figure S4. XPS spectra of the samples of α-Ag₂WO₄, α-Ag₂WO₄-TA, α-Ag₂WO₄-BA, and α-Ag₂WO₄-CA; Figure S5. High-resolution XPS spectra of Ag 3d (A, B, C, and D) and W 4f (E, F, G, and H) orbitals; Figure S6. Plots of transformed Kubelka-Munk function versus photon energy for α-Ag₂WO₄ microcrystals (A), and nanocrystals α-Ag₂WO₄-TA (B), α-Ag₂WO₄-BA (C), α-Ag₂WO₄-CA (D) samples; Figure S7. Evolution of UV−vis absorption spectra after 90 min of illumination for the degradation of RhB by the α-Ag₂WO₄ (A), α-Ag₂WO₄-TA (B), α-Ag₂WO₄-BA (C), and α-Ag₂WO₄-CA (D) samples; Figure S8. Photocatalytic RhB degradation profiles using the nanocrystal α-Ag₂WO₄-CA at different concentrations; Figure S9. Relationship between loss of mass of the α-Ag₂WO₄-CA and degradation efficiency during the catalytic cycles.