Additional file 1 of Boron Carbon Oxynitride as a Novel Metal-Free Photocatalyst
Creators: name: Chien, Liang Cheng
name: Chiang, Chen Wei
name: Lao, Chou Chio
name: Lin, Yung-I
name: Lin, Hao-Wu
name: Keng, Pei Yuin
Publisher: name: figshare
Year: 2021
Subjects: subject: Inorganic Chemistry
subject: FOS: Chemical sciences

description: Additional file 1. Table S1: Different sets of precursors used in the preparation of BCNO. Table S2: List of experiment and BCNO sample names investigated in this study. Figure S1: TEM images of (a) BGH01LT, (b)BGH01-30min, (c) BGH01-6hr, and (d) BGH02 in low magnification, (e) BGH02 in high magnification, (f) BGH03 in low magnification, (g) BGH03 in high magnification. (h) EDS mapping analysis of BGH03 (1) B (2) C (3) N (4) O. (i) BGH01LT, (j) BGH01-30min, (k) BGH01, and (l) BGH03 under UV lamp (365 nm, 4 watts). Figure S2: TEM images of (a) BMH01-30min, (b)BMH01HT, (c) BMH02. (d) EDS mapping analysis of BMH03. (1) B (2) C (3) N (4) O. (e) BMH01-30min (f) BMH01HT (g) BMH01 and (h) BMH03 under UV lamp (365 nm, 4 watts). Figure S3: Stacked XRD of (i) BGH01LT, (ii) BGH02, (iii) BGH03, (iv) BMH01-30min, (v) BMH01HT, (vi) BMH02. Figure S4: (a) Stacked XRD (normalized intensity) of g-C3N4, BMH01, and the physical mixture of both. (b) Stacked XRD (normalized intensity) of g-C3N4, BGH01, and the physical mixture of both. Table S3: XPS surface elemental composition BGH01, BGH03 and BMH01, BMH03. Figure S5: (a) Stacked FTIR of BGH01 (blue trace), BGH03 (red trace) and BGH01LT (green trace) and their corresponding IR active functional groups. (b) Stacked FTIR of BMH01 (blue trace), BMH03 (pink trace) and BMH01-30min (orange trace) and their corresponding IR active functional groups. Figure S6: Evolution of bonding composition, B-N, B-C and B-O in BGH series with reaction temperature and time based on XPS analyses. Figure S7: (a) Survey XPS spectra of BMH03, and 11B NMR spectroscopies. Core level spectra of (b) B 1s, (c) N 1s, (d) C 1s, (e) O 1s. Each core spectra were fitted with a black trace, while the red and green traces under the peak were deconvoluted using a Gaussian function. (f) 11B solid state MAS NMR were further deconvoluted with topspin SOLA software. Figure S9: Evolution of tetracoordinate boron site for BMH series based on 11B solid state MAS NMR analysis. Figure S8: Evolution of tetracoordinate boron site for BGH series based on 11B solid state MAS NMR analysis. Figure S10: Solid-state 11B NMR for BGH01LT showing a high composition of tetracoordinated BN2(OH)2 bonding, along with the high composition of boron oxides. Figure S12: Solid-state B-11 NMR for BMH01HT showing emergence of BN3 and its corresponding oxides. The tetracoordinate boron species here changed from BN2(OH)(CO) or BN2(CO)2 to BN2(OH)2, which resembles the tetracoordinated B-sites in BGH series. Figure S11: Solid-state 11B NMR for BMH01-30min showing emergence of BN3 and its corresponding oxides. The tetracoordinate boron species here changed from BN2(OH)(CO) or BN2(CO)2 to BN2(OH)2, which resembles the tetracoordinated B-sites in BGH series. Figure S13: Solid state 13C MAS NMR of g-C3N4. Table S4: Carbon composition of BMH01 and BMH03 based on CP-MAS 13C NMR deconvolution data and their corresponding integration values under each peak. Figure S14: Overlay emission spectra of BCNO prepared in this study. (a) Stacked normalized PL spectra and (b) Stacked normalized UV-visible absorbance spectra BMH and BGH series prepared in this study. Excitation wavelength was set at 365 nm. (c) Overlay Tauc plot (αhv)1/2 versus hv for BMH01 (red trace) and BGH03 (blue trace). Figure S15: Photoluminescence emission of BMH01 and BMH03 at different excitation wavelength. The highest emission intensity is excited with 320 nm light for BMH01 and 340 nm for BMH03. (a) excitation dependent PL spectrum of BMH01 (b) normalized excitation dependent PL spectrum for BMH01 (c) PLE spectrum of BMH01 at 420 nm emission (d) excitation dependent PL spectrum of BMH03 (e) normalized excitation dependent PL spectrum for BMH03 (f) PLE spectrum of BMH03 at 440 nm emission. Table S5: Quantum yield and multiexponential decay fitting results of the µs-time resolved photoluminescence spectra monitored at λmax of each sample. Excitation wavelength was set at 337 nm Figure S17: UPS spectra of (a) BMH01, (b) BMH02, and (c) BMH03. Figure S16: UV-visible absorbance of methylene blue during dye photodegradation using BMH01-30min. Figure S17: UPS spectra of (a) BMH01, (b) BMH02, and (c) BMH03. Table S6: Energy band position of BMH series.