Science Advances

Supplementary Materials

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  • fig. S1. FTIR analysis of synthesized and oxygen plasma–treated MgO NPs.
  • fig. S2. SEM image and EDX analysis of synthesized MgO NPs.
  • fig. S3. Temperature-dependent experiments of synthesized MgO NPs.
  • fig. S4. Solvent composition–dependent experiments of synthesized MgO NPs.
  • fig. S5. Digital photographs of different-sized MgO colloidal solution.
  • fig. S6. Optical properties for ~85-nm MgO nanocrystals and H2 production from methanol photodecomposition.
  • fig. S7. Specific surface area of four different-sized MgO NPs.
  • fig. S8. TEM and SAED images of an MgO NP with a size of 40 nm.
  • fig. S9. The rate pattern of H2 production for ~85-nm MgO nanocrystals.
  • fig. S10. SEM analysis and H2 production of commercial MgO, SiO2, and TiO2 (P25).
  • fig. S11. Chromatogram analysis of a mixture of gases.
  • fig. S12. Chromatogram analysis of a mixture of gases.
  • fig. S13. UPS spectrum for ~85-nm-sized MgO NPs.

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