There are plenty of atomic vacancies at the bottom

1. Recent advances in photocatalytic treatment of pollutants in aqueous media10.1016/j.envint.2016.02.012 ↗

2. Chemical reduction of methylene blue in the presence of nanocatalysts: a critical review10.1515/revce-2018-0047 ↗

3. Perovskite oxide based materials for energy and environment-oriented photocatalysis10.1021/acscatal.0c02947 ↗

4. Principles and mechanisms of photocatalytic dye degradation on TiO2 based photocatalysts: a comparative overview10.1039/C4RA06658H ↗

5. Strategies for improving perovskite photocatalysts reactivity for organic pollutants degradation: a review on recent progress10.1016/j.cej.2021.128783 ↗

6. Size control of the photo-electrochemical water splitting activity of SrTiO3 nano-cubes10.1016/j.electacta.2018.11.185 ↗

7. Shape-tunable SrTiO3 crystals revealing facet-dependent optical and photocatalytic properties10.1021/acs.jpcc.9b02081 ↗

8. Ni/SrTiO3 nanoparticles for photodegradation of methylene blue10.1021/acsanm.2c03007 ↗

9. Size-controlled SrTiO3 nanoparticles photodecorated with Pd cocatalysts for photocatalytic organic dye degradation10.1021/acsanm.0c01086 ↗

10. Vanadium-doped SrTiO3 nanocubes: insight into role of vanadium in improving the photocatalytic activity10.1016/j.apsusc.2020.145858 ↗

11. Self-doped SrTiO3-δ photocatalyst with enhanced activity for artificial photosynthesis under visible light10.1039/c1ee01594j ↗

12. Oxygen vacancy enhanced photocatalytic activity of Pervoskite SrTiO310.1021/am5051907 ↗

13. Shifting the band gap from UV to visible region in cerium oxide nanoparticles10.1016/j.apsusc.2020.146860 ↗

14. New horizons in photocatalysis: the importance of mesopores for cerium oxide10.1039/D0TA08655J ↗

15. Symmetry-broken Ru nanoparticles with parasitic Ru-Co dual-single atoms overcome the volmer step of alkaline hydrogen oxidation10.1002/ange.202319618 ↗

16. Electronic structure of oxygen vacancies in SrTiO3 and LaAlO310.1103/PhysRevB.86.155105 ↗

17. Oxygen vacancy clustering and electron localization in oxygen-deficient SrTiO3: LDA+ U study

18. Modification of SrTiO3 surface by nitrogen ion bombardment for enhanced photocatalysis10.1016/j.apsusc.2013.03.007 ↗

19. Enhancement in Photocatalytic Activity of SrTiO3 by Tailoring Particle Size and Defects10.1002/pssa.201900294 ↗

20. Hydrothermal synthesis, growth mechanism, optical properties and photocatalytic activity of cubic SrTiO3 particles for the degradation of cationic and anionic dyes10.1016/j.ijleo.2018.09.027 ↗

21. Chu · 1978

22. The stopping and range of ions in matter10.1016/j.nimb.2010.02.091 ↗

23. Rodrı́guez-Carvajal · 2001

24. How to correctly determine the band gap energy of modified semiconductor photocatalysts based on UV–Vis spectra10.1021/acs.jpclett.8b02892 ↗

25. A contribution to the optics of pigments

26. Optical properties and electronic structure of amorphous germanium10.1002/pssb.19660150224 ↗

27. Conduction in non-crystalline systems V. Conductivity, optical absorption and photoconductivity in amorphous semiconductors10.1080/14786437008221061 ↗

28. Novel XAFS capabilities at ELETTRA synchrotron light source

29. IFEFFIT : interactive XAFS analysis and FEFF fitting10.1107/S0909049500016964 ↗

30. HEPHAESTUS: data analysis for X-ray absorption spectroscopy using IFEFFIT10.1107/S0909049505012719 ↗

31. D.C. Koningsberger, R. Prins, X-ray absorption: principles, applications, techniques of EXAFS, SEXAFS and XANES, 1987.

32. The soft X-ray spectroscopy beamline at the LNLS: technical description and commissioning results10.1107/S0909049599008122 ↗

33. Semi-empirical simulations of surface relaxation for perovskite titanates10.1016/S0039-6028(00)00603-8 ↗

34. B. Meyer, J. Padilla, D. Vanderbilt, Theory of PbTiO3, BaTiO3, and SrTiO3 surfaces, Faraday Discuss., 114 (1999) 395–405. 10.1039/A903029H.10.1039/a903029h ↗

35. Surface of strontium titanate10.1103/PhysRevLett.98.076102 ↗

36. Structure and electronic state of the TiO2 and SrO terminated SrTiO3(100) surfaces10.1016/0039-6028(93)90806-U ↗

37. P. Giannozzi, S. Baroni, N. Bonini, M. Calandra, R. Car, C. Cavazzoni, D. Ceresoli, G.L. Chiarotti, M. Cococcioni, I. Dabo, A.Dal Corso, S. de Gironcoli, S. Fabris, G. Fratesi, R. Gebauer1, U. Gerstmann, C. Gougoussis, A. Kokalj, M. Lazzeri, L. Martin-Samos, N. Marzari, F. Mauri, R. Mazzarello, S. Paolini, A. Pasquarello, L. Paulatto, C. Sbraccia, S. Scandolo, G. Sclauzero, A.P. Seitsonen, A. Smogunov, P. Umari1, R.M. Wentzcovitch, QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materialsJournal of physics: condensed matter, 21 (2009) 395502. 10.1088/0953-8984/21/39/395502.10.1088/0953-8984/21/39/395502 ↗

38. Pseudopotentials periodic table: from H to Pu10.1016/j.commatsci.2014.07.043 ↗

39. Band theory and Mott insulators: hubbard U instead of Stoner I10.1103/PhysRevB.44.943 ↗

40. Thickness-dependent carrier density at the surface of SrTiO3 (111) slabs

41. Aggregation of methylene blue in frozen aqueous solutions studied by absorption spectroscopy10.1021/jp050439j ↗

42. Photocatalytic degradation of Methylene Blue using a mixed catalyst and product analysis by LC/MS10.1016/j.cej.2009.11.017 ↗

43. P. Hsieh, G. Naresh, Y. Huang, C. Tsao, Y. Hsu, L. Chen, M. Huang, Shape-Tunable SrTiO3 crystals revealing facet-dependent optical and photocatalytic properties, 123 (2019) 13664–13671. 10.1021/acs.jpcc.9b02081.10.1021/acs.jpcc.9b02081 ↗

44. L.F. da Silva, O.F. Lopes, V.R. de Mendonça, K.T.G. Carvalho, E. Longo, C. Ribeiro, V. R. Mastelaro An understanding of the photocatalytic properties and pollutant degradation mechanism of SrTiO3 nanoparticles, 92 (2016) 371–378.10.1111/php.12586.10.1111/php.12586 ↗

45. SciPy 1.0: fundamental algorithms for scientific computing in Python10.1038/s41592-019-0686-2 ↗

46. SrTiO3 by XPS10.1116/1.1247683 ↗

47. SrCO3 by XPS10.1116/1.1247696 ↗

48. Magnetism in SrTiO3 before and after UV irradiation10.1016/j.apsusc.2015.02.035 ↗

49. TiO2 by XPS10.1116/1.1247794 ↗

50. Adsorption and decomposition of methanol on TiO2, SrTiO3 and SrO10.1039/ft9949001015 ↗

51. Tuning the oxygen vacancy population of cerium oxide (CeO2-x, 0 < x < 0.5) nanoparticles10.1016/j.apsusc.2017.06.101 ↗

52. A first-principles study of H2O adsorption and dissociation on the SrTiO3(100) surface10.1080/08927021003762746 ↗

53. Mechanism of interaction of water above the methylammonium lead iodide perovskite nanocluster: size effect and water-induced defective states10.1021/acs.jpclett.3c02807 ↗

54. Visible-light-accelerated oxygen vacancy migration in strontium titanate

55. Recipe for the design of mixed cation lead halide perovskites: adsorption and charge transfer from A-site cations to PbI2