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Photographs of: (a) electrosprayed spherical PVP particles (SPVP); (b) deposition of Al2O3 on SPVP by ALD (SPVP_ Al2O3); (c) deposition of TiO2 on the SPVP_ Al2O3 material by ALD (SPVP_ Al2O3_ TiO2); (d) calcined samples (CSTiO2); Scanning electronic microscopy (SEM) images of: (e) SPVP; (f) SPVP_ Al2O3, (g) SPVP_Al2O3_TiO2; (h) CSTiO2.
